./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ff03de63 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-crafted/RecursiveMultiplication-1.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 759adb73d7cf84e38b053793a18c9790a1be4e7fcbaa9f1ea135fb0a39711b48 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 21:55:22,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 21:55:22,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 21:55:22,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 21:55:22,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 21:55:22,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 21:55:22,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 21:55:22,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 21:55:22,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 21:55:22,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 21:55:22,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 21:55:22,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 21:55:22,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 21:55:22,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 21:55:22,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 21:55:22,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 21:55:22,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 21:55:22,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 21:55:22,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 21:55:22,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 21:55:22,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 21:55:22,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 21:55:22,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 21:55:22,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 21:55:22,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 21:55:22,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 21:55:22,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 21:55:22,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 21:55:22,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 21:55:22,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 21:55:22,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 21:55:22,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 21:55:22,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 21:55:22,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 21:55:22,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 21:55:22,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 21:55:22,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 21:55:22,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 21:55:22,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 21:55:22,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 21:55:22,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 21:55:22,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-21 21:55:22,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 21:55:22,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 21:55:22,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 21:55:22,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 21:55:22,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 21:55:22,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 21:55:22,319 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 21:55:22,319 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 21:55:22,319 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 21:55:22,320 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 21:55:22,320 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 21:55:22,320 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 21:55:22,321 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 21:55:22,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 21:55:22,321 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 21:55:22,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 21:55:22,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 21:55:22,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 21:55:22,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 21:55:22,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 21:55:22,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 21:55:22,322 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 21:55:22,322 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 21:55:22,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 21:55:22,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 21:55:22,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 21:55:22,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 21:55:22,323 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 21:55:22,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 21:55:22,324 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 21:55:22,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 759adb73d7cf84e38b053793a18c9790a1be4e7fcbaa9f1ea135fb0a39711b48 [2021-12-21 21:55:22,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 21:55:22,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 21:55:22,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 21:55:22,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 21:55:22,521 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 21:55:22,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2021-12-21 21:55:22,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a55fc3c1a/ab966f8e09a5477caff3d70cbbe790bc/FLAG8350129e2 [2021-12-21 21:55:22,896 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 21:55:22,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/RecursiveMultiplication-1.c [2021-12-21 21:55:22,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a55fc3c1a/ab966f8e09a5477caff3d70cbbe790bc/FLAG8350129e2 [2021-12-21 21:55:23,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a55fc3c1a/ab966f8e09a5477caff3d70cbbe790bc [2021-12-21 21:55:23,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 21:55:23,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 21:55:23,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 21:55:23,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 21:55:23,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 21:55:23,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388dae02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23, skipping insertion in model container [2021-12-21 21:55:23,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 21:55:23,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 21:55:23,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:55:23,464 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 21:55:23,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 21:55:23,480 INFO L208 MainTranslator]: Completed translation [2021-12-21 21:55:23,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23 WrapperNode [2021-12-21 21:55:23,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 21:55:23,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 21:55:23,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 21:55:23,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 21:55:23,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,502 INFO L137 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2021-12-21 21:55:23,503 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 21:55:23,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 21:55:23,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 21:55:23,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 21:55:23,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 21:55:23,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 21:55:23,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 21:55:23,518 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 21:55:23,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (1/1) ... [2021-12-21 21:55:23,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:23,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:23,537 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) [2021-12-21 21:55:23,545 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 [2021-12-21 21:55:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2021-12-21 21:55:23,562 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2021-12-21 21:55:23,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 21:55:23,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 21:55:23,593 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 21:55:23,594 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 21:55:23,655 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 21:55:23,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 21:55:23,659 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 21:55:23,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:55:23 BoogieIcfgContainer [2021-12-21 21:55:23,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 21:55:23,661 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 21:55:23,661 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 21:55:23,663 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 21:55:23,672 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:55:23,672 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 09:55:23" (1/3) ... [2021-12-21 21:55:23,673 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@291cac54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:55:23, skipping insertion in model container [2021-12-21 21:55:23,673 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:55:23,673 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:55:23" (2/3) ... [2021-12-21 21:55:23,673 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@291cac54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 09:55:23, skipping insertion in model container [2021-12-21 21:55:23,673 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 21:55:23,674 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:55:23" (3/3) ... [2021-12-21 21:55:23,674 INFO L388 chiAutomizerObserver]: Analyzing ICFG RecursiveMultiplication-1.c [2021-12-21 21:55:23,704 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 21:55:23,704 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 21:55:23,705 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 21:55:23,705 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 21:55:23,705 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 21:55:23,705 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 21:55:23,705 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 21:55:23,705 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 21:55:23,714 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 21:55:23,727 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:55:23,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:55:23,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:55:23,748 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 21:55:23,748 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:55:23,748 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 21:55:23,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 21:55:23,750 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:55:23,750 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:55:23,750 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:55:23,751 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-21 21:55:23,751 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:55:23,755 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1, main_~m~0#1, main_~n~0#1, main_~res~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 12#L26true assume !!(-65535 <= main_~m~0#1 && main_~m~0#1 <= 65535); 6#L27true assume !!(-65535 <= main_~n~0#1 && main_~n~0#1 <= 65535); 16#L28true call main_#t~ret4#1 := mult(main_~m~0#1, main_~n~0#1);< 8#multENTRYtrue [2021-12-21 21:55:23,756 INFO L793 eck$LassoCheckResult]: Loop: 8#multENTRYtrue ~n := #in~n;~m := #in~m; 5#L13true assume ~m < 0; 18#L14true call #t~ret0 := mult(~n, -~m);< 8#multENTRYtrue [2021-12-21 21:55:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash 42056124, now seen corresponding path program 1 times [2021-12-21 21:55:23,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:55:23,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703608846] [2021-12-21 21:55:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:55:23,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:55:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:23,835 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:55:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:23,857 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:55:23,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:23,860 INFO L85 PathProgramCache]: Analyzing trace with hash 29916, now seen corresponding path program 1 times [2021-12-21 21:55:23,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:55:23,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123094797] [2021-12-21 21:55:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:55:23,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:55:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:23,876 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:55:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:23,886 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:55:23,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:23,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1236460223, now seen corresponding path program 1 times [2021-12-21 21:55:23,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:55:23,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911605760] [2021-12-21 21:55:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:55:23,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:55:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:23,906 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:55:23,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:23,913 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:55:24,027 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:55:24,027 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:55:24,028 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:55:24,028 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:55:24,028 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:55:24,028 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,028 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:55:24,028 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:55:24,028 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2021-12-21 21:55:24,028 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:55:24,029 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:55:24,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,122 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:55:24,123 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:55:24,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,126 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) [2021-12-21 21:55:24,126 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 [2021-12-21 21:55:24,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:24,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:24,158 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:24,158 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:24,174 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 [2021-12-21 21:55:24,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,175 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) [2021-12-21 21:55:24,176 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 [2021-12-21 21:55:24,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:24,179 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:24,186 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:24,186 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=0} Honda state: {mult_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:24,214 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 [2021-12-21 21:55:24,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,219 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) [2021-12-21 21:55:24,221 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 [2021-12-21 21:55:24,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:24,222 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:24,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:24,239 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:24,256 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 [2021-12-21 21:55:24,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,257 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) [2021-12-21 21:55:24,258 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 [2021-12-21 21:55:24,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:24,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:24,265 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:24,265 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~m=0} Honda state: {mult_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:24,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-21 21:55:24,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,283 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) [2021-12-21 21:55:24,285 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 [2021-12-21 21:55:24,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:24,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:24,294 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:24,295 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:24,309 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 [2021-12-21 21:55:24,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,310 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) [2021-12-21 21:55:24,311 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 [2021-12-21 21:55:24,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:24,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:24,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:24,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#in~n=0} Honda state: {mult_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:24,340 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 [2021-12-21 21:55:24,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,341 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) [2021-12-21 21:55:24,348 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 [2021-12-21 21:55:24,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:24,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:24,375 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 [2021-12-21 21:55:24,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,376 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:24,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-21 21:55:24,385 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:55:24,385 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:24,412 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:55:24,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:24,415 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:55:24,415 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:55:24,415 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:55:24,415 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:55:24,416 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:55:24,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:55:24,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:55:24,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration1_Loop [2021-12-21 21:55:24,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:55:24,416 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:55:24,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:24,466 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:55:24,469 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:55:24,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,484 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:24,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-21 21:55:24,486 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 [2021-12-21 21:55:24,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:55:24,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:55:24,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:55:24,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:55:24,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:55:24,493 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:55:24,493 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:55:24,515 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:55:24,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:24,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,534 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:24,543 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 [2021-12-21 21:55:24,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:55:24,549 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:55:24,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:55:24,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:55:24,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:55:24,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:55:24,549 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:55:24,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-21 21:55:24,558 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:55:24,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:24,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:24,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-21 21:55:24,577 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 [2021-12-21 21:55:24,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:55:24,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:55:24,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:55:24,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:55:24,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:55:24,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:55:24,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:55:24,600 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:55:24,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:24,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,616 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:24,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-21 21:55:24,619 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 [2021-12-21 21:55:24,625 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:55:24,625 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:55:24,625 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:55:24,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:55:24,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:55:24,626 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:55:24,626 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:55:24,631 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:55:24,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:24,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,647 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:24,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-21 21:55:24,649 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 [2021-12-21 21:55:24,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:55:24,654 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:55:24,654 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:55:24,654 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:55:24,654 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:55:24,655 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:55:24,655 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:55:24,658 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:55:24,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:24,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,676 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:24,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-21 21:55:24,679 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 [2021-12-21 21:55:24,686 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:55:24,686 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:55:24,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:55:24,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:55:24,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:55:24,687 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:55:24,687 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:55:24,692 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 21:55:24,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-21 21:55:24,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,710 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:24,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-21 21:55:24,712 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 21:55:24,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:55:24,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:55:24,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:55:24,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:55:24,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:55:24,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:55:24,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:55:24,732 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:55:24,736 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-21 21:55:24,736 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 21:55:24,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:24,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:24,738 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:24,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-21 21:55:24,740 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:55:24,740 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:55:24,740 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:55:24,740 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_#in~m) = -1*mult_#in~m Supporting invariants [] [2021-12-21 21:55:24,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-21 21:55:24,758 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:55:24,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:55:24,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:55:24,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:55:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:55:24,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 21:55:24,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:55:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:55:24,879 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 [2021-12-21 21:55:24,880 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-21 21:55:24,960 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 47 states and 60 transitions. Complement of second has 12 states. [2021-12-21 21:55:24,962 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 [2021-12-21 21:55:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-21 21:55:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-21 21:55:24,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-21 21:55:24,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:55:24,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-21 21:55:24,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:55:24,993 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 6 letters. [2021-12-21 21:55:24,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:55:24,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 60 transitions. [2021-12-21 21:55:24,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:55:25,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 22 states and 25 transitions. [2021-12-21 21:55:25,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-21 21:55:25,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-21 21:55:25,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 25 transitions. [2021-12-21 21:55:25,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:55:25,004 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-12-21 21:55:25,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 25 transitions. [2021-12-21 21:55:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2021-12-21 21:55:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:55:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-12-21 21:55:25,021 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-12-21 21:55:25,021 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-12-21 21:55:25,021 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 21:55:25,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2021-12-21 21:55:25,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:55:25,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:55:25,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:55:25,022 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 21:55:25,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 21:55:25,022 INFO L791 eck$LassoCheckResult]: Stem: 124#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1, main_~m~0#1, main_~n~0#1, main_~res~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 137#L26 assume !!(-65535 <= main_~m~0#1 && main_~m~0#1 <= 65535); 131#L27 assume !!(-65535 <= main_~n~0#1 && main_~n~0#1 <= 65535); 127#L28 call main_#t~ret4#1 := mult(main_~m~0#1, main_~n~0#1);< 132#multENTRY ~n := #in~n;~m := #in~m; 126#L13 assume !(~m < 0); 128#L16 [2021-12-21 21:55:25,022 INFO L793 eck$LassoCheckResult]: Loop: 128#L16 assume !(0 == ~m); 134#L19 call #t~ret1 := mult(~n, ~m - 1);< 136#multENTRY ~n := #in~n;~m := #in~m; 138#L13 assume !(~m < 0); 128#L16 [2021-12-21 21:55:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:25,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1761229506, now seen corresponding path program 1 times [2021-12-21 21:55:25,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:55:25,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978305279] [2021-12-21 21:55:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:55:25,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:55:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:25,028 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:55:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:25,031 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:55:25,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1254111, now seen corresponding path program 1 times [2021-12-21 21:55:25,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:55:25,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906762628] [2021-12-21 21:55:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:55:25,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:55:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:25,045 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:55:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:25,049 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:55:25,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:25,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1744825056, now seen corresponding path program 1 times [2021-12-21 21:55:25,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:55:25,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053750403] [2021-12-21 21:55:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:55:25,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:55:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:25,062 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:55:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:25,068 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:55:25,145 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:55:25,145 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:55:25,145 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:55:25,145 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:55:25,145 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:55:25,145 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:25,145 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:55:25,145 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:55:25,146 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2021-12-21 21:55:25,146 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:55:25,146 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:55:25,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:25,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:25,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:25,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:25,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:25,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:25,208 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:55:25,208 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:55:25,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:25,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:25,211 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:25,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-21 21:55:25,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:25,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:25,257 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:25,257 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret0=0} Honda state: {mult_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:25,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-21 21:55:25,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:25,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:25,274 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:25,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-21 21:55:25,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:25,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:25,287 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:25,288 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#t~ret1=0} Honda state: {mult_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:25,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:25,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:25,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:25,305 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:25,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-21 21:55:25,310 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:25,310 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:25,317 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:25,318 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_#res=0} Honda state: {mult_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:25,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:25,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:25,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:25,336 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:25,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-21 21:55:25,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:25,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:25,352 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 21:55:25,352 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {mult_~n=-8, mult_#in~n=-8} Honda state: {mult_~n=-8, mult_#in~n=-8} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 21:55:25,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:25,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:25,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:25,370 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:25,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-21 21:55:25,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:25,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:25,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-21 21:55:25,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:25,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:25,400 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:25,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-21 21:55:25,401 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:55:25,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:29,798 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:55:29,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-21 21:55:29,803 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:55:29,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:55:29,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:55:29,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:55:29,803 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:55:29,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:29,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:55:29,803 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:55:29,803 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration2_Loop [2021-12-21 21:55:29,803 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:55:29,803 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:55:29,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:29,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:29,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:29,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:29,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:29,851 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:55:29,852 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:55:29,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:29,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:29,853 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:29,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-21 21:55:29,855 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 [2021-12-21 21:55:29,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:55:29,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:55:29,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:55:29,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:55:29,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:55:29,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:55:29,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:55:29,878 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:55:29,880 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 21:55:29,880 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 21:55:29,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:29,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:29,883 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:29,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-21 21:55:29,939 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:55:29,940 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:55:29,940 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:55:29,940 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2021-12-21 21:55:29,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-21 21:55:29,956 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:55:29,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:55:29,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 21:55:29,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:55:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:55:30,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 21:55:30,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:55:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:55:30,038 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 [2021-12-21 21:55:30,039 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:55:30,071 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 32 transitions. Complement of second has 13 states. [2021-12-21 21:55:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-21 21:55:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:55:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-12-21 21:55:30,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-21 21:55:30,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:55:30,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 4 letters. [2021-12-21 21:55:30,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:55:30,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 7 letters. Loop has 8 letters. [2021-12-21 21:55:30,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:55:30,075 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2021-12-21 21:55:30,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:55:30,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 26 states and 31 transitions. [2021-12-21 21:55:30,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-12-21 21:55:30,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-21 21:55:30,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 31 transitions. [2021-12-21 21:55:30,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:55:30,081 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-12-21 21:55:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 31 transitions. [2021-12-21 21:55:30,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-12-21 21:55:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 6 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:55:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2021-12-21 21:55:30,087 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-12-21 21:55:30,087 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2021-12-21 21:55:30,087 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 21:55:30,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2021-12-21 21:55:30,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:55:30,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 21:55:30,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 21:55:30,089 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 21:55:30,089 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 21:55:30,089 INFO L791 eck$LassoCheckResult]: Stem: 232#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 233#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1, main_~m~0#1, main_~n~0#1, main_~res~0#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~n~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 248#L26 assume !!(-65535 <= main_~m~0#1 && main_~m~0#1 <= 65535); 240#L27 assume !!(-65535 <= main_~n~0#1 && main_~n~0#1 <= 65535); 241#L28 call main_#t~ret4#1 := mult(main_~m~0#1, main_~n~0#1);< 246#multENTRY ~n := #in~n;~m := #in~m; 252#L13 assume !(~m < 0); 253#L16 assume !(0 == ~m); 235#L19 call #t~ret1 := mult(~n, ~m - 1);< 254#multENTRY ~n := #in~n;~m := #in~m; 234#L13 assume ~m < 0; 236#L14 [2021-12-21 21:55:30,090 INFO L793 eck$LassoCheckResult]: Loop: 236#L14 call #t~ret0 := mult(~n, -~m);< 242#multENTRY ~n := #in~n;~m := #in~m; 244#L13 assume ~m < 0; 236#L14 [2021-12-21 21:55:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1744825059, now seen corresponding path program 1 times [2021-12-21 21:55:30,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:55:30,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033361710] [2021-12-21 21:55:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:55:30,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:55:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:55:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:55:30,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 21:55:30,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033361710] [2021-12-21 21:55:30,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033361710] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 21:55:30,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 21:55:30,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 21:55:30,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795639895] [2021-12-21 21:55:30,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 21:55:30,155 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-21 21:55:30,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:30,155 INFO L85 PathProgramCache]: Analyzing trace with hash 60546, now seen corresponding path program 2 times [2021-12-21 21:55:30,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 21:55:30,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235592285] [2021-12-21 21:55:30,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 21:55:30,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 21:55:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:30,159 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 21:55:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 21:55:30,161 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 21:55:30,213 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:55:30,213 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:55:30,213 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:55:30,213 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:55:30,213 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 21:55:30,213 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:30,214 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:55:30,214 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:55:30,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2021-12-21 21:55:30,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:55:30,214 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:55:30,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:30,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:30,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:30,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:30,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:30,262 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:55:30,262 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 21:55:30,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:30,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:30,263 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:30,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-21 21:55:30,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 21:55:30,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:30,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:30,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:30,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:30,294 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:30,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-21 21:55:30,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 21:55:30,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 21:55:31,264 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 21:55:31,268 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-21 21:55:31,269 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 21:55:31,269 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 21:55:31,269 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 21:55:31,269 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 21:55:31,269 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 21:55:31,269 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:31,269 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 21:55:31,269 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 21:55:31,269 INFO L133 ssoRankerPreferences]: Filename of dumped script: RecursiveMultiplication-1.c_Iteration3_Loop [2021-12-21 21:55:31,269 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 21:55:31,269 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 21:55:31,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:31,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:31,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:31,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:31,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 21:55:31,323 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 21:55:31,323 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 21:55:31,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:31,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:31,325 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:31,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-21 21:55:31,327 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 [2021-12-21 21:55:31,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 21:55:31,332 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 21:55:31,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 21:55:31,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 21:55:31,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 21:55:31,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 21:55:31,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 21:55:31,350 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 21:55:31,351 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-21 21:55:31,351 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 21:55:31,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 21:55:31,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 21:55:31,396 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 21:55:31,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-21 21:55:31,398 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 21:55:31,398 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 21:55:31,399 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 21:55:31,399 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(mult_~m) = 1*mult_~m Supporting invariants [] [2021-12-21 21:55:31,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:31,414 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 21:55:31,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 21:55:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:55:31,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 21:55:31,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:55:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 21:55:31,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 21:55:31,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 21:55:31,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:31,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-12-21 21:55:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 21:55:31,521 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 [2021-12-21 21:55:31,521 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:55:31,544 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 62 transitions. Complement of second has 9 states. [2021-12-21 21:55:31,544 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 [2021-12-21 21:55:31,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:55:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-21 21:55:31,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 3 letters. [2021-12-21 21:55:31,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:55:31,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 14 letters. Loop has 3 letters. [2021-12-21 21:55:31,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:55:31,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 6 letters. [2021-12-21 21:55:31,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 21:55:31,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 62 transitions. [2021-12-21 21:55:31,548 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-21 21:55:31,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 45 states and 55 transitions. [2021-12-21 21:55:31,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-12-21 21:55:31,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-12-21 21:55:31,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 55 transitions. [2021-12-21 21:55:31,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 21:55:31,549 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2021-12-21 21:55:31,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 55 transitions. [2021-12-21 21:55:31,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-12-21 21:55:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 10 states have call successors, (13), 10 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:55:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-12-21 21:55:31,552 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-12-21 21:55:31,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 21:55:31,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 21:55:31,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 21:55:31,554 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 5 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 21:55:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 21:55:31,579 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-12-21 21:55:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 21:55:31,580 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 36 transitions. [2021-12-21 21:55:31,580 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 21:55:31,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2021-12-21 21:55:31,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 21:55:31,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 21:55:31,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 21:55:31,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 21:55:31,581 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 21:55:31,581 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 21:55:31,581 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 21:55:31,581 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 21:55:31,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-21 21:55:31,581 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 21:55:31,581 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-21 21:55:31,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 09:55:31 BoogieIcfgContainer [2021-12-21 21:55:31,586 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 21:55:31,587 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 21:55:31,587 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 21:55:31,587 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 21:55:31,587 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:55:23" (3/4) ... [2021-12-21 21:55:31,589 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 21:55:31,589 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 21:55:31,589 INFO L158 Benchmark]: Toolchain (without parser) took 8242.26ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 56.6MB in the beginning and 77.7MB in the end (delta: -21.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:55:31,590 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 61.5MB in the beginning and 61.4MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:55:31,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132.82ms. Allocated memory is still 90.2MB. Free memory was 56.4MB in the beginning and 68.6MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 21:55:31,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.27ms. Allocated memory is still 90.2MB. Free memory was 68.6MB in the beginning and 67.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:55:31,591 INFO L158 Benchmark]: Boogie Preprocessor took 13.01ms. Allocated memory is still 90.2MB. Free memory was 67.4MB in the beginning and 66.5MB in the end (delta: 829.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:55:31,591 INFO L158 Benchmark]: RCFGBuilder took 143.47ms. Allocated memory is still 90.2MB. Free memory was 66.5MB in the beginning and 57.7MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 21:55:31,591 INFO L158 Benchmark]: BuchiAutomizer took 7925.00ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 57.7MB in the beginning and 78.1MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:55:31,592 INFO L158 Benchmark]: Witness Printer took 2.51ms. Allocated memory is still 109.1MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 21:55:31,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 61.5MB in the beginning and 61.4MB in the end (delta: 27.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 132.82ms. Allocated memory is still 90.2MB. Free memory was 56.4MB in the beginning and 68.6MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.27ms. Allocated memory is still 90.2MB. Free memory was 68.6MB in the beginning and 67.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.01ms. Allocated memory is still 90.2MB. Free memory was 67.4MB in the beginning and 66.5MB in the end (delta: 829.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 143.47ms. Allocated memory is still 90.2MB. Free memory was 66.5MB in the beginning and 57.7MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 7925.00ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 57.7MB in the beginning and 78.1MB in the end (delta: -20.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.51ms. Allocated memory is still 109.1MB. Free memory is still 77.7MB. There was no memory consumed. 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 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * \old(m) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 5 locations. One deterministic module has affine ranking function m and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.8s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 7.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 23 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 46 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq167 hnf91 smp100 dnf100 smp100 tf111 neg98 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-21 21:55:31,619 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE