./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 04:20:28,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 04:20:28,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 04:20:28,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 04:20:28,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 04:20:28,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 04:20:28,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 04:20:28,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 04:20:28,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 04:20:28,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 04:20:28,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 04:20:28,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 04:20:28,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 04:20:28,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 04:20:28,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 04:20:28,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 04:20:28,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 04:20:28,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 04:20:28,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 04:20:28,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 04:20:28,297 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 04:20:28,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 04:20:28,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 04:20:28,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 04:20:28,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 04:20:28,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 04:20:28,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 04:20:28,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 04:20:28,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 04:20:28,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 04:20:28,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 04:20:28,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 04:20:28,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 04:20:28,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 04:20:28,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 04:20:28,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 04:20:28,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 04:20:28,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 04:20:28,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 04:20:28,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 04:20:28,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 04:20:28,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 04:20:28,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-13 04:20:28,336 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 04:20:28,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 04:20:28,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 04:20:28,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 04:20:28,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 04:20:28,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 04:20:28,340 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 04:20:28,340 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 04:20:28,340 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 04:20:28,341 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 04:20:28,341 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 04:20:28,341 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 04:20:28,341 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 04:20:28,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 04:20:28,341 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 04:20:28,342 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 04:20:28,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 04:20:28,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 04:20:28,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 04:20:28,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 04:20:28,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 04:20:28,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 04:20:28,343 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 04:20:28,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 04:20:28,343 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 04:20:28,343 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 04:20:28,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 04:20:28,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 04:20:28,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 04:20:28,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 04:20:28,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 04:20:28,345 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 04:20:28,345 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2022-07-13 04:20:28,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 04:20:28,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 04:20:28,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 04:20:28,573 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 04:20:28,573 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 04:20:28,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-07-13 04:20:28,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc39c1903/dea5ddc8496f46e2845ed71dc17b5e32/FLAG687bd0e5f [2022-07-13 04:20:28,948 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 04:20:28,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-07-13 04:20:28,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc39c1903/dea5ddc8496f46e2845ed71dc17b5e32/FLAG687bd0e5f [2022-07-13 04:20:29,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc39c1903/dea5ddc8496f46e2845ed71dc17b5e32 [2022-07-13 04:20:29,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 04:20:29,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 04:20:29,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 04:20:29,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 04:20:29,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 04:20:29,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee5f281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29, skipping insertion in model container [2022-07-13 04:20:29,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 04:20:29,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 04:20:29,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-07-13 04:20:29,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 04:20:29,535 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 04:20:29,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-07-13 04:20:29,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 04:20:29,561 INFO L208 MainTranslator]: Completed translation [2022-07-13 04:20:29,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29 WrapperNode [2022-07-13 04:20:29,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 04:20:29,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 04:20:29,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 04:20:29,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 04:20:29,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,585 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-07-13 04:20:29,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 04:20:29,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 04:20:29,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 04:20:29,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 04:20:29,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 04:20:29,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 04:20:29,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 04:20:29,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 04:20:29,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (1/1) ... [2022-07-13 04:20:29,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:29,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:29,632 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) [2022-07-13 04:20:29,665 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 [2022-07-13 04:20:29,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 04:20:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 04:20:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-07-13 04:20:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-07-13 04:20:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-07-13 04:20:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-07-13 04:20:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 04:20:29,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 04:20:29,717 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 04:20:29,718 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 04:20:29,812 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 04:20:29,827 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 04:20:29,827 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 04:20:29,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:20:29 BoogieIcfgContainer [2022-07-13 04:20:29,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 04:20:29,830 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 04:20:29,830 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 04:20:29,843 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 04:20:29,844 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 04:20:29,844 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 04:20:29" (1/3) ... [2022-07-13 04:20:29,845 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@fa2e22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 04:20:29, skipping insertion in model container [2022-07-13 04:20:29,845 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 04:20:29,845 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:29" (2/3) ... [2022-07-13 04:20:29,845 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@fa2e22c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 04:20:29, skipping insertion in model container [2022-07-13 04:20:29,845 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 04:20:29,846 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:20:29" (3/3) ... [2022-07-13 04:20:29,846 INFO L354 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-2.c [2022-07-13 04:20:29,900 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 04:20:29,900 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 04:20:29,900 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 04:20:29,900 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 04:20:29,900 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 04:20:29,901 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 04:20:29,901 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 04:20:29,901 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 04:20:29,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-13 04:20:29,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-13 04:20:29,927 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:29,927 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:29,939 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 04:20:29,939 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:29,940 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 04:20:29,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-13 04:20:29,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-13 04:20:29,947 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:29,947 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:29,947 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 04:20:29,947 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:29,955 INFO L752 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-07-13 04:20:29,956 INFO L754 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-07-13 04:20:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-07-13 04:20:29,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:29,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116449459] [2022-07-13 04:20:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:29,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:30,061 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:30,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:30,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:30,110 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-07-13 04:20:30,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:30,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391813880] [2022-07-13 04:20:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:30,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:30,125 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:30,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-07-13 04:20:30,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:30,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791532626] [2022-07-13 04:20:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:30,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:30,167 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:30,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:30,387 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:30,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:30,388 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:30,388 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:30,388 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:30,388 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,388 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:30,388 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:30,388 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2022-07-13 04:20:30,389 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:30,389 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:30,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,486 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:30,487 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:30,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,490 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) [2022-07-13 04:20:30,517 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 [2022-07-13 04:20:30,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:30,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:30,535 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:30,535 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:30,559 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 [2022-07-13 04:20:30,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,560 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) [2022-07-13 04:20:30,561 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 [2022-07-13 04:20:30,563 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:30,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:30,586 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:30,586 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:30,604 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 [2022-07-13 04:20:30,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,606 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) [2022-07-13 04:20:30,606 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 [2022-07-13 04:20:30,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:30,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:30,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:30,614 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:30,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-07-13 04:20:30,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,631 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) [2022-07-13 04:20:30,632 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 [2022-07-13 04:20:30,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:30,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:30,660 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:30,660 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:30,679 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 [2022-07-13 04:20:30,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,686 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) [2022-07-13 04:20:30,687 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 [2022-07-13 04:20:30,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:30,689 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:30,711 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:30,712 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:30,729 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 [2022-07-13 04:20:30,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,731 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) [2022-07-13 04:20:30,732 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 [2022-07-13 04:20:30,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:30,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:30,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:30,754 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:30,772 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 [2022-07-13 04:20:30,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,774 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) [2022-07-13 04:20:30,776 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 [2022-07-13 04:20:30,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:30,777 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:30,792 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:30,792 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:30,807 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 [2022-07-13 04:20:30,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,809 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) [2022-07-13 04:20:30,809 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 [2022-07-13 04:20:30,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:30,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:30,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-07-13 04:20:30,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,841 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) [2022-07-13 04:20:30,842 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 [2022-07-13 04:20:30,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:30,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:30,898 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:30,901 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 [2022-07-13 04:20:30,902 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:30,902 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:30,902 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:30,902 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:30,902 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:30,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:30,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:30,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2022-07-13 04:20:30,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:30,902 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:30,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:30,977 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:30,980 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:30,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:30,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:30,983 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) [2022-07-13 04:20:30,985 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 [2022-07-13 04:20:30,986 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 [2022-07-13 04:20:30,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:30,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:30,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:30,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:30,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:30,995 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:30,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:31,007 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:31,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-07-13 04:20:31,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:31,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:31,025 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) [2022-07-13 04:20:31,025 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 [2022-07-13 04:20:31,027 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 [2022-07-13 04:20:31,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:31,032 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:31,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:31,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:31,033 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:31,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:31,033 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:31,049 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:31,064 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 [2022-07-13 04:20:31,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:31,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:31,065 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) [2022-07-13 04:20:31,066 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 [2022-07-13 04:20:31,067 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 [2022-07-13 04:20:31,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:31,073 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:31,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:31,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:31,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:31,073 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:31,073 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:31,075 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:31,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-07-13 04:20:31,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:31,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:31,092 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) [2022-07-13 04:20:31,094 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 [2022-07-13 04:20:31,099 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 [2022-07-13 04:20:31,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:31,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:31,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:31,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:31,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:31,106 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:31,106 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:31,111 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:31,126 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 [2022-07-13 04:20:31,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:31,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:31,128 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) [2022-07-13 04:20:31,128 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 [2022-07-13 04:20:31,132 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 [2022-07-13 04:20:31,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:31,138 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:31,138 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:31,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:31,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:31,139 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:31,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:31,147 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:31,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:31,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:31,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:31,164 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) [2022-07-13 04:20:31,164 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 [2022-07-13 04:20:31,166 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 [2022-07-13 04:20:31,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:31,172 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:31,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:31,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:31,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:31,173 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:31,173 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:31,182 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:31,185 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 04:20:31,186 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 04:20:31,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:31,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:31,188 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) [2022-07-13 04:20:31,189 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 [2022-07-13 04:20:31,190 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:31,190 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:31,190 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:31,191 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-07-13 04:20:31,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:31,209 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:31,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:31,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 04:20:31,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:31,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:31,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:31,430 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-07-13 04:20:31,432 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 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) [2022-07-13 04:20:31,560 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 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 84 states and 116 transitions. Complement of second has 24 states. [2022-07-13 04:20:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 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) [2022-07-13 04:20:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-07-13 04:20:31,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-07-13 04:20:31,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:31,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-07-13 04:20:31,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:31,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-07-13 04:20:31,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:31,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-07-13 04:20:31,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-13 04:20:31,593 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-07-13 04:20:31,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-07-13 04:20:31,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-07-13 04:20:31,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-07-13 04:20:31,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:31,595 INFO L369 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-07-13 04:20:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-07-13 04:20:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-07-13 04:20:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-07-13 04:20:31,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-07-13 04:20:31,620 INFO L392 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-07-13 04:20:31,620 INFO L374 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-07-13 04:20:31,620 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 04:20:31,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-07-13 04:20:31,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-13 04:20:31,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:31,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:31,622 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:31,622 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:31,623 INFO L752 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 197#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 214#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 213#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 226#L12 assume !(1 == ~n); 208#L15 call #t~ret4 := fibo2(~n - 1);< 230#fibo2ENTRY ~n := #in~n; 236#L20 assume !(~n < 1); 249#L22 assume !(1 == ~n); 204#L25 call #t~ret6 := fibo1(~n - 1);< 216#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#46#return; 207#L25-1 [2022-07-13 04:20:31,623 INFO L754 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret7 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret4 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret6 := fibo1(~n - 1);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#46#return; 207#L25-1 [2022-07-13 04:20:31,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:31,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-07-13 04:20:31,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:31,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573506507] [2022-07-13 04:20:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:31,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:31,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 04:20:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 04:20:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:31,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573506507] [2022-07-13 04:20:31,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573506507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 04:20:31,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 04:20:31,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 04:20:31,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453120856] [2022-07-13 04:20:31,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 04:20:31,691 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:31,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-07-13 04:20:31,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:31,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357018699] [2022-07-13 04:20:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:31,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:31,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 04:20:31,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:31,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 04:20:31,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:31,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357018699] [2022-07-13 04:20:31,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357018699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 04:20:31,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 04:20:31,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 04:20:31,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374512026] [2022-07-13 04:20:31,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 04:20:31,725 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 04:20:31,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:31,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 04:20:31,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 04:20:31,728 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 04:20:31,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:31,790 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-07-13 04:20:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 04:20:31,791 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-07-13 04:20:31,798 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-13 04:20:31,801 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-07-13 04:20:31,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-07-13 04:20:31,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-07-13 04:20:31,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-07-13 04:20:31,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:31,804 INFO L369 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-07-13 04:20:31,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-07-13 04:20:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-07-13 04:20:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-07-13 04:20:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-07-13 04:20:31,819 INFO L392 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-07-13 04:20:31,819 INFO L374 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-07-13 04:20:31,820 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 04:20:31,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-07-13 04:20:31,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-13 04:20:31,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:31,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:31,822 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:31,822 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:31,822 INFO L752 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 342#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 360#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 359#fibo1ENTRY ~n := #in~n; 361#L10 assume !(~n < 1); 371#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 382#L20 assume !(~n < 1); 398#L22 assume !(1 == ~n); 349#L25 call #t~ret6 := fibo1(~n - 1);< 362#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 386#fibo1FINAL assume true; 385#fibo1EXIT >#46#return; 351#L25-1 [2022-07-13 04:20:31,822 INFO L754 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret7 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret4 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret6 := fibo1(~n - 1);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume 1 == ~n;#res := 1; 370#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 351#L25-1 [2022-07-13 04:20:31,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:31,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-07-13 04:20:31,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:31,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937287577] [2022-07-13 04:20:31,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:31,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 04:20:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:31,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:31,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937287577] [2022-07-13 04:20:31,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937287577] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:31,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128514037] [2022-07-13 04:20:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:31,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:31,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:31,889 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:31,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 04:20:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:31,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 04:20:31,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:31,947 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 [2022-07-13 04:20:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:31,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:32,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128514037] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:32,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:32,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-07-13 04:20:32,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973324976] [2022-07-13 04:20:32,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:32,074 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:32,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-07-13 04:20:32,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:32,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534778627] [2022-07-13 04:20:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:32,085 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:32,090 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:32,257 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:32,257 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:32,257 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:32,257 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:32,258 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:32,258 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:32,258 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:32,258 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:32,258 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2022-07-13 04:20:32,258 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:32,258 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:32,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:32,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:32,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:32,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:32,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:32,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:32,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:32,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:32,318 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:32,318 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:32,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:32,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:32,332 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) [2022-07-13 04:20:32,334 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 [2022-07-13 04:20:32,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:32,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:32,356 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:32,356 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:32,374 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 [2022-07-13 04:20:32,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:32,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:32,376 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) [2022-07-13 04:20:32,380 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 [2022-07-13 04:20:32,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:32,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:32,402 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:32,402 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:32,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-07-13 04:20:32,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:32,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:32,419 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) [2022-07-13 04:20:32,420 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 [2022-07-13 04:20:32,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:32,464 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:32,470 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:32,471 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:32,487 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 [2022-07-13 04:20:32,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:32,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:32,489 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) [2022-07-13 04:20:32,492 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 [2022-07-13 04:20:32,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:32,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:32,509 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:32,509 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:32,528 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 [2022-07-13 04:20:32,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:32,529 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) [2022-07-13 04:20:32,530 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 [2022-07-13 04:20:32,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:32,531 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:32,564 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 [2022-07-13 04:20:32,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:32,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:32,566 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) [2022-07-13 04:20:32,567 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 [2022-07-13 04:20:32,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:32,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:33,461 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:33,465 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 [2022-07-13 04:20:33,465 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:33,465 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:33,465 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:33,465 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:33,465 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:33,465 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:33,465 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:33,465 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:33,465 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2022-07-13 04:20:33,465 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:33,465 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:33,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:33,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:33,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:33,479 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:33,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:33,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:33,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:33,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:33,525 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:33,526 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:33,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:33,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:33,527 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) [2022-07-13 04:20:33,552 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 [2022-07-13 04:20:33,552 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 [2022-07-13 04:20:33,558 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:33,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:33,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:33,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:33,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:33,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:33,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:33,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:33,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-07-13 04:20:33,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:33,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:33,581 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) [2022-07-13 04:20:33,581 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 [2022-07-13 04:20:33,583 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 [2022-07-13 04:20:33,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:33,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:33,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:33,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:33,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:33,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:33,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:33,601 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:33,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-13 04:20:33,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:33,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:33,618 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) [2022-07-13 04:20:33,618 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 [2022-07-13 04:20:33,762 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 [2022-07-13 04:20:33,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:33,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:33,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:33,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:33,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:33,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:33,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:33,780 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:33,796 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 [2022-07-13 04:20:33,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:33,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:33,797 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) [2022-07-13 04:20:33,798 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 [2022-07-13 04:20:33,806 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 [2022-07-13 04:20:33,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:33,812 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:33,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:33,812 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:33,812 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:33,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:33,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:33,832 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:33,835 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 04:20:33,835 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 04:20:33,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:33,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:33,836 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) [2022-07-13 04:20:33,837 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 [2022-07-13 04:20:33,838 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:33,839 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:33,839 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:33,839 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-07-13 04:20:33,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-07-13 04:20:33,855 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:33,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 04:20:33,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:33,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 04:20:33,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:34,048 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 [2022-07-13 04:20:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:34,054 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-07-13 04:20:34,054 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 04:20:34,334 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-07-13 04:20:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 04:20:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-07-13 04:20:34,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-07-13 04:20:34,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:34,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-07-13 04:20:34,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:34,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-07-13 04:20:34,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:34,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-07-13 04:20:34,341 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-07-13 04:20:34,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-07-13 04:20:34,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-07-13 04:20:34,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-07-13 04:20:34,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-07-13 04:20:34,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:34,345 INFO L369 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-07-13 04:20:34,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-07-13 04:20:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-07-13 04:20:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-07-13 04:20:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-07-13 04:20:34,355 INFO L392 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-07-13 04:20:34,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 04:20:34,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-13 04:20:34,357 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 04:20:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:34,541 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2022-07-13 04:20:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 04:20:34,542 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2022-07-13 04:20:34,544 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-07-13 04:20:34,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2022-07-13 04:20:34,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2022-07-13 04:20:34,547 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2022-07-13 04:20:34,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2022-07-13 04:20:34,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:34,548 INFO L369 hiAutomatonCegarLoop]: Abstraction has 204 states and 272 transitions. [2022-07-13 04:20:34,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2022-07-13 04:20:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2022-07-13 04:20:34,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 120 states have (on average 1.225) internal successors, (147), 129 states have internal predecessors, (147), 44 states have call successors, (46), 24 states have call predecessors, (46), 28 states have return successors, (64), 38 states have call predecessors, (64), 42 states have call successors, (64) [2022-07-13 04:20:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2022-07-13 04:20:34,558 INFO L392 hiAutomatonCegarLoop]: Abstraction has 192 states and 257 transitions. [2022-07-13 04:20:34,558 INFO L374 stractBuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2022-07-13 04:20:34,558 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 04:20:34,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2022-07-13 04:20:34,559 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-07-13 04:20:34,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:34,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:34,560 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:34,560 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:34,561 INFO L752 eck$LassoCheckResult]: Stem: 1241#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 1276#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1313#fibo1ENTRY ~n := #in~n; 1350#L10 assume !(~n < 1); 1349#L12 assume !(1 == ~n); 1259#L15 call #t~ret4 := fibo2(~n - 1);< 1348#fibo2ENTRY ~n := #in~n; 1347#L20 assume !(~n < 1); 1346#L22 assume !(1 == ~n); 1271#L25 call #t~ret6 := fibo1(~n - 1);< 1270#fibo1ENTRY ~n := #in~n; 1272#L10 assume !(~n < 1); 1292#L12 assume !(1 == ~n); 1293#L15 call #t~ret4 := fibo2(~n - 1);< 1299#fibo2ENTRY ~n := #in~n; 1426#L20 assume !(~n < 1); 1425#L22 assume !(1 == ~n); 1280#L25 call #t~ret6 := fibo1(~n - 1);< 1344#fibo1ENTRY ~n := #in~n; 1345#L10 assume !(~n < 1); 1355#L12 assume !(1 == ~n); 1356#L15 call #t~ret4 := fibo2(~n - 1);< 1364#fibo2ENTRY ~n := #in~n; 1368#L20 assume ~n < 1;#res := 0; 1367#fibo2FINAL assume true; 1363#fibo2EXIT >#50#return; 1360#L15-1 call #t~ret5 := fibo2(~n - 2);< 1361#fibo2ENTRY ~n := #in~n; 1365#L20 assume ~n < 1;#res := 0; 1362#fibo2FINAL assume true; 1359#fibo2EXIT >#52#return; 1357#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1358#fibo1FINAL assume true; 1424#fibo1EXIT >#46#return; 1332#L25-1 call #t~ret7 := fibo1(~n - 2);< 1343#fibo1ENTRY ~n := #in~n; 1376#L10 assume ~n < 1;#res := 0; 1431#fibo1FINAL assume true; 1422#fibo1EXIT >#48#return; 1420#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1419#fibo2FINAL assume true; 1416#fibo2EXIT >#50#return; 1246#L15-1 call #t~ret5 := fibo2(~n - 2);< 1298#fibo2ENTRY [2022-07-13 04:20:34,561 INFO L754 eck$LassoCheckResult]: Loop: 1298#fibo2ENTRY ~n := #in~n; 1429#L20 assume !(~n < 1); 1243#L22 assume !(1 == ~n); 1248#L25 call #t~ret6 := fibo1(~n - 1);< 1265#fibo1ENTRY ~n := #in~n; 1269#L10 assume !(~n < 1); 1290#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1298#fibo2ENTRY [2022-07-13 04:20:34,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash -960039395, now seen corresponding path program 1 times [2022-07-13 04:20:34,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:34,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945132656] [2022-07-13 04:20:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 04:20:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 04:20:34,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:34,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-13 04:20:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 04:20:34,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:34,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945132656] [2022-07-13 04:20:34,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945132656] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:34,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999648004] [2022-07-13 04:20:34,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:34,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:34,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:34,619 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:34,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-13 04:20:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:34,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 04:20:34,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 04:20:34,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 04:20:35,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999648004] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:35,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:35,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2022-07-13 04:20:35,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718096122] [2022-07-13 04:20:35,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:35,103 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:35,107 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2022-07-13 04:20:35,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:35,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548534664] [2022-07-13 04:20:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:35,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:35,111 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:35,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:35,175 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:35,175 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:35,175 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:35,175 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:35,175 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:35,175 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,175 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:35,175 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:35,175 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2022-07-13 04:20:35,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:35,176 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:35,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,219 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:35,219 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:35,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,221 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2022-07-13 04:20:35,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-13 04:20:35,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:35,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:35,243 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:35,243 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:35,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-07-13 04:20:35,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,260 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-13 04:20:35,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:35,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:35,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:35,269 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:35,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2022-07-13 04:20:35,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,286 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-07-13 04:20:35,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:35,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:35,295 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:35,295 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:35,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-07-13 04:20:35,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,317 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-07-13 04:20:35,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:35,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:35,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:35,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:35,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:35,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,348 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-07-13 04:20:35,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:35,350 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:35,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:35,367 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:35,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-07-13 04:20:35,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,385 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2022-07-13 04:20:35,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-07-13 04:20:35,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:35,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:35,394 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:35,394 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:35,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-07-13 04:20:35,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,415 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:35,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:35,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-07-13 04:20:35,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:35,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,458 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-07-13 04:20:35,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:35,461 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:35,518 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:35,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:35,556 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:35,556 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:35,556 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:35,556 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:35,556 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:35,556 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,556 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:35,556 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:35,556 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2022-07-13 04:20:35,556 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:35,556 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:35,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:35,607 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:35,607 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:35,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,609 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-07-13 04:20:35,611 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 [2022-07-13 04:20:35,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:35,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:35,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:35,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:35,617 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:35,617 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:35,618 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:35,629 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:35,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:35,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,647 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-07-13 04:20:35,649 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 [2022-07-13 04:20:35,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:35,654 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:35,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:35,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:35,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:35,655 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:35,655 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:35,670 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:35,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:35,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,687 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-07-13 04:20:35,689 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 [2022-07-13 04:20:35,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:35,695 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:35,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:35,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:35,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:35,695 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:35,696 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:35,707 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:35,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:35,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,725 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-07-13 04:20:35,727 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 [2022-07-13 04:20:35,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:35,733 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:35,733 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:35,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:35,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:35,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:35,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:35,734 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:35,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-07-13 04:20:35,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,750 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-07-13 04:20:35,752 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 [2022-07-13 04:20:35,757 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:35,758 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:35,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:35,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:35,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:35,758 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:35,758 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:35,770 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:35,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-07-13 04:20:35,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,789 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-07-13 04:20:35,791 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 [2022-07-13 04:20:35,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:35,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:35,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:35,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:35,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:35,797 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:35,797 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:35,798 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:35,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-07-13 04:20:35,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,815 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2022-07-13 04:20:35,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-07-13 04:20:35,817 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 [2022-07-13 04:20:35,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:35,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:35,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:35,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:35,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:35,823 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:35,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:35,824 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:35,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2022-07-13 04:20:35,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,841 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-07-13 04:20:35,843 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 [2022-07-13 04:20:35,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:35,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:35,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:35,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:35,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:35,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:35,850 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:35,851 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:35,852 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-13 04:20:35,852 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 04:20:35,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:35,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:35,854 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:35,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-07-13 04:20:35,856 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:35,856 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:35,856 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:35,856 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-07-13 04:20:35,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-07-13 04:20:35,872 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:35,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 04:20:35,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:36,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:36,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:36,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:36,314 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-13 04:20:36,314 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:36,423 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2022-07-13 04:20:36,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-07-13 04:20:36,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2022-07-13 04:20:36,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:36,425 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:36,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 04:20:36,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:36,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:36,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:36,719 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-13 04:20:36,719 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:36,851 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2022-07-13 04:20:36,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-07-13 04:20:36,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2022-07-13 04:20:36,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:36,856 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:36,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 04:20:36,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:37,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:37,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:37,173 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-13 04:20:37,173 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:37,302 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 587 states and 803 transitions. Complement of second has 25 states. [2022-07-13 04:20:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2022-07-13 04:20:37,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2022-07-13 04:20:37,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:37,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2022-07-13 04:20:37,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:37,304 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2022-07-13 04:20:37,305 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:37,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2022-07-13 04:20:37,311 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2022-07-13 04:20:37,317 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2022-07-13 04:20:37,317 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2022-07-13 04:20:37,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2022-07-13 04:20:37,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2022-07-13 04:20:37,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:37,318 INFO L369 hiAutomatonCegarLoop]: Abstraction has 476 states and 676 transitions. [2022-07-13 04:20:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2022-07-13 04:20:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2022-07-13 04:20:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 290 states have internal predecessors, (337), 78 states have call successors, (81), 60 states have call predecessors, (81), 56 states have return successors, (126), 50 states have call predecessors, (126), 76 states have call successors, (126) [2022-07-13 04:20:37,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2022-07-13 04:20:37,337 INFO L392 hiAutomatonCegarLoop]: Abstraction has 401 states and 544 transitions. [2022-07-13 04:20:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:37,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 04:20:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-07-13 04:20:37,338 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 16 states have call successors, (21), 7 states have call predecessors, (21), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2022-07-13 04:20:37,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:37,744 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2022-07-13 04:20:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 04:20:37,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2022-07-13 04:20:37,749 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-07-13 04:20:37,753 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2022-07-13 04:20:37,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2022-07-13 04:20:37,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2022-07-13 04:20:37,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2022-07-13 04:20:37,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:37,754 INFO L369 hiAutomatonCegarLoop]: Abstraction has 457 states and 645 transitions. [2022-07-13 04:20:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2022-07-13 04:20:37,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2022-07-13 04:20:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 269 states have (on average 1.20817843866171) internal successors, (325), 298 states have internal predecessors, (325), 85 states have call successors, (87), 57 states have call predecessors, (87), 60 states have return successors, (161), 58 states have call predecessors, (161), 83 states have call successors, (161) [2022-07-13 04:20:37,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2022-07-13 04:20:37,767 INFO L392 hiAutomatonCegarLoop]: Abstraction has 414 states and 573 transitions. [2022-07-13 04:20:37,767 INFO L374 stractBuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2022-07-13 04:20:37,767 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-13 04:20:37,767 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2022-07-13 04:20:37,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-07-13 04:20:37,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:37,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:37,770 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:37,770 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:37,771 INFO L752 eck$LassoCheckResult]: Stem: 5286#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5287#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 5315#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5369#fibo1ENTRY ~n := #in~n; 5421#L10 assume !(~n < 1); 5420#L12 assume !(1 == ~n); 5416#L15 call #t~ret4 := fibo2(~n - 1);< 5419#fibo2ENTRY ~n := #in~n; 5418#L20 assume !(~n < 1); 5417#L22 assume !(1 == ~n); 5412#L25 call #t~ret6 := fibo1(~n - 1);< 5415#fibo1ENTRY ~n := #in~n; 5414#L10 assume !(~n < 1); 5413#L12 assume !(1 == ~n); 5408#L15 call #t~ret4 := fibo2(~n - 1);< 5411#fibo2ENTRY ~n := #in~n; 5410#L20 assume !(~n < 1); 5409#L22 assume !(1 == ~n); 5404#L25 call #t~ret6 := fibo1(~n - 1);< 5407#fibo1ENTRY ~n := #in~n; 5406#L10 assume !(~n < 1); 5405#L12 assume !(1 == ~n); 5390#L15 call #t~ret4 := fibo2(~n - 1);< 5403#fibo2ENTRY ~n := #in~n; 5399#L20 assume !(~n < 1); 5400#L22 assume !(1 == ~n); 5318#L25 call #t~ret6 := fibo1(~n - 1);< 5427#fibo1ENTRY ~n := #in~n; 5428#L10 assume !(~n < 1); 5578#L12 assume 1 == ~n;#res := 1; 5579#fibo1FINAL assume true; 5644#fibo1EXIT >#46#return; 5487#L25-1 call #t~ret7 := fibo1(~n - 2);< 5498#fibo1ENTRY ~n := #in~n; 5494#L10 assume !(~n < 1); 5495#L12 assume !(1 == ~n); 5479#L15 call #t~ret4 := fibo2(~n - 1);< 5486#fibo2ENTRY ~n := #in~n; 5484#L20 assume !(~n < 1); 5481#L22 assume 1 == ~n;#res := 1; 5482#fibo2FINAL assume true; 5567#fibo2EXIT >#50#return; 5356#L15-1 [2022-07-13 04:20:37,771 INFO L754 eck$LassoCheckResult]: Loop: 5356#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#fibo2ENTRY ~n := #in~n; 5348#L20 assume !(~n < 1); 5357#L22 assume !(1 == ~n); 5550#L25 call #t~ret6 := fibo1(~n - 1);< 5558#fibo1ENTRY ~n := #in~n; 5597#L10 assume !(~n < 1); 5596#L12 assume 1 == ~n;#res := 1; 5595#fibo1FINAL assume true; 5593#fibo1EXIT >#46#return; 5585#L25-1 call #t~ret7 := fibo1(~n - 2);< 5591#fibo1ENTRY ~n := #in~n; 5590#L10 assume !(~n < 1); 5589#L12 assume !(1 == ~n); 5350#L15 call #t~ret4 := fibo2(~n - 1);< 5362#fibo2ENTRY ~n := #in~n; 5363#L20 assume !(~n < 1); 5630#L22 assume !(1 == ~n); 5607#L25 call #t~ret6 := fibo1(~n - 1);< 5608#fibo1ENTRY ~n := #in~n; 5622#L10 assume !(~n < 1); 5620#L12 assume 1 == ~n;#res := 1; 5619#fibo1FINAL assume true; 5606#fibo1EXIT >#46#return; 5603#L25-1 call #t~ret7 := fibo1(~n - 2);< 5605#fibo1ENTRY ~n := #in~n; 5652#L10 assume ~n < 1;#res := 0; 5649#fibo1FINAL assume true; 5602#fibo1EXIT >#48#return; 5555#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5599#fibo2FINAL assume true; 5564#fibo2EXIT >#50#return; 5356#L15-1 [2022-07-13 04:20:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1816161101, now seen corresponding path program 1 times [2022-07-13 04:20:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:37,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367770292] [2022-07-13 04:20:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:37,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:37,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 04:20:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-13 04:20:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:37,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:37,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367770292] [2022-07-13 04:20:37,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367770292] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:37,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574659930] [2022-07-13 04:20:37,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:37,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:37,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:37,895 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:37,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-07-13 04:20:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:37,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 04:20:37,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:37,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:38,033 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:38,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574659930] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:38,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:38,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2022-07-13 04:20:38,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799673399] [2022-07-13 04:20:38,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:38,035 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:38,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:38,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1364976163, now seen corresponding path program 1 times [2022-07-13 04:20:38,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:38,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005100144] [2022-07-13 04:20:38,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:38,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 04:20:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 04:20:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 04:20:38,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:38,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005100144] [2022-07-13 04:20:38,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005100144] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:38,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713010443] [2022-07-13 04:20:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:38,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:38,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,104 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:38,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-07-13 04:20:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 04:20:38,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 04:20:38,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 04:20:38,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713010443] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:38,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:38,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-07-13 04:20:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692974798] [2022-07-13 04:20:38,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:38,179 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 04:20:38,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 04:20:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 04:20:38,180 INFO L87 Difference]: Start difference. First operand 414 states and 573 transitions. cyclomatic complexity: 166 Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 04:20:38,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:38,230 INFO L93 Difference]: Finished difference Result 384 states and 501 transitions. [2022-07-13 04:20:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 04:20:38,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 384 states and 501 transitions. [2022-07-13 04:20:38,234 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-07-13 04:20:38,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 384 states to 359 states and 475 transitions. [2022-07-13 04:20:38,237 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2022-07-13 04:20:38,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 222 [2022-07-13 04:20:38,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 359 states and 475 transitions. [2022-07-13 04:20:38,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:38,237 INFO L369 hiAutomatonCegarLoop]: Abstraction has 359 states and 475 transitions. [2022-07-13 04:20:38,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states and 475 transitions. [2022-07-13 04:20:38,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2022-07-13 04:20:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 227 states have (on average 1.1629955947136563) internal successors, (264), 244 states have internal predecessors, (264), 65 states have call successors, (66), 50 states have call predecessors, (66), 52 states have return successors, (119), 49 states have call predecessors, (119), 63 states have call successors, (119) [2022-07-13 04:20:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 449 transitions. [2022-07-13 04:20:38,245 INFO L392 hiAutomatonCegarLoop]: Abstraction has 344 states and 449 transitions. [2022-07-13 04:20:38,245 INFO L374 stractBuchiCegarLoop]: Abstraction has 344 states and 449 transitions. [2022-07-13 04:20:38,245 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-13 04:20:38,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 344 states and 449 transitions. [2022-07-13 04:20:38,247 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-07-13 04:20:38,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:38,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:38,249 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:38,249 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:38,249 INFO L752 eck$LassoCheckResult]: Stem: 6590#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6591#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 6621#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6659#fibo1ENTRY ~n := #in~n; 6773#L10 assume !(~n < 1); 6772#L12 assume !(1 == ~n); 6768#L15 call #t~ret4 := fibo2(~n - 1);< 6771#fibo2ENTRY ~n := #in~n; 6770#L20 assume !(~n < 1); 6769#L22 assume !(1 == ~n); 6759#L25 call #t~ret6 := fibo1(~n - 1);< 6767#fibo1ENTRY ~n := #in~n; 6766#L10 assume !(~n < 1); 6765#L12 assume !(1 == ~n); 6755#L15 call #t~ret4 := fibo2(~n - 1);< 6758#fibo2ENTRY ~n := #in~n; 6757#L20 assume !(~n < 1); 6756#L22 assume !(1 == ~n); 6741#L25 call #t~ret6 := fibo1(~n - 1);< 6754#fibo1ENTRY ~n := #in~n; 6753#L10 assume !(~n < 1); 6752#L12 assume !(1 == ~n); 6698#L15 call #t~ret4 := fibo2(~n - 1);< 6678#fibo2ENTRY ~n := #in~n; 6738#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6629#L25 call #t~ret6 := fibo1(~n - 1);< 6749#fibo1ENTRY ~n := #in~n; 6747#L10 assume !(~n < 1); 6745#L12 assume !(1 == ~n); 6677#L15 call #t~ret4 := fibo2(~n - 1);< 6678#fibo2ENTRY ~n := #in~n; 6738#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6629#L25 call #t~ret6 := fibo1(~n - 1);< 6749#fibo1ENTRY ~n := #in~n; 6750#L10 assume !(~n < 1); 6764#L12 assume 1 == ~n;#res := 1; 6902#fibo1FINAL assume true; 6898#fibo1EXIT >#46#return; 6899#L25-1 call #t~ret7 := fibo1(~n - 2);< 6910#fibo1ENTRY ~n := #in~n; 6912#L10 assume ~n < 1;#res := 0; 6909#fibo1FINAL assume true; 6907#fibo1EXIT >#48#return; 6891#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6889#fibo2FINAL assume true; 6825#fibo2EXIT >#50#return; 6796#L15-1 [2022-07-13 04:20:38,249 INFO L754 eck$LassoCheckResult]: Loop: 6796#L15-1 call #t~ret5 := fibo2(~n - 2);< 6801#fibo2ENTRY ~n := #in~n; 6826#L20 assume !(~n < 1); 6823#L22 assume !(1 == ~n); 6817#L25 call #t~ret6 := fibo1(~n - 1);< 6821#fibo1ENTRY ~n := #in~n; 6859#L10 assume !(~n < 1); 6856#L12 assume !(1 == ~n); 6805#L15 call #t~ret4 := fibo2(~n - 1);< 6833#fibo2ENTRY ~n := #in~n; 6826#L20 assume !(~n < 1); 6823#L22 assume !(1 == ~n); 6817#L25 call #t~ret6 := fibo1(~n - 1);< 6821#fibo1ENTRY ~n := #in~n; 6859#L10 assume !(~n < 1); 6856#L12 assume !(1 == ~n); 6805#L15 call #t~ret4 := fibo2(~n - 1);< 6833#fibo2ENTRY ~n := #in~n; 6834#L20 assume !(~n < 1); 6852#L22 assume 1 == ~n;#res := 1; 6850#fibo2FINAL assume true; 6831#fibo2EXIT >#50#return; 6796#L15-1 call #t~ret5 := fibo2(~n - 2);< 6801#fibo2ENTRY ~n := #in~n; 6835#L20 assume ~n < 1;#res := 0; 6876#fibo2FINAL assume true; 6824#fibo2EXIT >#52#return; 6800#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6820#fibo1FINAL assume true; 6812#fibo1EXIT >#46#return; 6814#L25-1 call #t~ret7 := fibo1(~n - 2);< 6819#fibo1ENTRY ~n := #in~n; 6857#L10 assume ~n < 1;#res := 0; 6858#fibo1FINAL assume true; 6842#fibo1EXIT >#48#return; 6840#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6838#fibo2FINAL assume true; 6803#fibo2EXIT >#50#return; 6796#L15-1 [2022-07-13 04:20:38,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199334, now seen corresponding path program 1 times [2022-07-13 04:20:38,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:38,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632051266] [2022-07-13 04:20:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 04:20:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 04:20:38,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:38,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632051266] [2022-07-13 04:20:38,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632051266] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:38,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667757949] [2022-07-13 04:20:38,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:38,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:38,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,421 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:38,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-07-13 04:20:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 04:20:38,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:38,540 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 04:20:38,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 04:20:38,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667757949] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:38,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:38,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2022-07-13 04:20:38,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623280096] [2022-07-13 04:20:38,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:38,707 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:38,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1513837346, now seen corresponding path program 1 times [2022-07-13 04:20:38,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:38,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261603364] [2022-07-13 04:20:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:38,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 04:20:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 04:20:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 04:20:38,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:38,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261603364] [2022-07-13 04:20:38,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261603364] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:38,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354232312] [2022-07-13 04:20:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:38,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,760 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:38,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-07-13 04:20:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 04:20:38,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 04:20:38,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 04:20:38,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354232312] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:38,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:38,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-07-13 04:20:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187065986] [2022-07-13 04:20:38,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:38,992 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 04:20:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 04:20:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-13 04:20:38,992 INFO L87 Difference]: Start difference. First operand 344 states and 449 transitions. cyclomatic complexity: 111 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2022-07-13 04:20:39,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:39,127 INFO L93 Difference]: Finished difference Result 360 states and 459 transitions. [2022-07-13 04:20:39,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 04:20:39,128 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 360 states and 459 transitions. [2022-07-13 04:20:39,132 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2022-07-13 04:20:39,135 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 360 states to 360 states and 459 transitions. [2022-07-13 04:20:39,135 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2022-07-13 04:20:39,135 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2022-07-13 04:20:39,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 360 states and 459 transitions. [2022-07-13 04:20:39,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:39,136 INFO L369 hiAutomatonCegarLoop]: Abstraction has 360 states and 459 transitions. [2022-07-13 04:20:39,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states and 459 transitions. [2022-07-13 04:20:39,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 321. [2022-07-13 04:20:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 213 states have (on average 1.1737089201877935) internal successors, (250), 230 states have internal predecessors, (250), 61 states have call successors, (62), 46 states have call predecessors, (62), 47 states have return successors, (98), 44 states have call predecessors, (98), 59 states have call successors, (98) [2022-07-13 04:20:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 410 transitions. [2022-07-13 04:20:39,153 INFO L392 hiAutomatonCegarLoop]: Abstraction has 321 states and 410 transitions. [2022-07-13 04:20:39,153 INFO L374 stractBuchiCegarLoop]: Abstraction has 321 states and 410 transitions. [2022-07-13 04:20:39,153 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-13 04:20:39,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 321 states and 410 transitions. [2022-07-13 04:20:39,154 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-07-13 04:20:39,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:39,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:39,157 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:39,157 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:39,157 INFO L752 eck$LassoCheckResult]: Stem: 7933#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7934#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 7963#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8007#fibo1ENTRY ~n := #in~n; 8110#L10 assume !(~n < 1); 8109#L12 assume !(1 == ~n); 8105#L15 call #t~ret4 := fibo2(~n - 1);< 8108#fibo2ENTRY ~n := #in~n; 8107#L20 assume !(~n < 1); 8106#L22 assume !(1 == ~n); 8101#L25 call #t~ret6 := fibo1(~n - 1);< 8104#fibo1ENTRY ~n := #in~n; 8103#L10 assume !(~n < 1); 8102#L12 assume !(1 == ~n); 8097#L15 call #t~ret4 := fibo2(~n - 1);< 8100#fibo2ENTRY ~n := #in~n; 8099#L20 assume !(~n < 1); 8098#L22 assume !(1 == ~n); 8093#L25 call #t~ret6 := fibo1(~n - 1);< 8096#fibo1ENTRY ~n := #in~n; 8095#L10 assume !(~n < 1); 8094#L12 assume !(1 == ~n); 8016#L15 call #t~ret4 := fibo2(~n - 1);< 8018#fibo2ENTRY ~n := #in~n; 8092#L20 assume !(~n < 1); 8079#L22 assume !(1 == ~n); 7977#L25 call #t~ret6 := fibo1(~n - 1);< 8041#fibo1ENTRY ~n := #in~n; 8075#L10 assume !(~n < 1); 8076#L12 assume !(1 == ~n); 8017#L15 call #t~ret4 := fibo2(~n - 1);< 8018#fibo2ENTRY ~n := #in~n; 8092#L20 assume !(~n < 1); 8079#L22 assume !(1 == ~n); 7977#L25 call #t~ret6 := fibo1(~n - 1);< 8041#fibo1ENTRY ~n := #in~n; 8077#L10 assume !(~n < 1); 8088#L12 assume 1 == ~n;#res := 1; 8252#fibo1FINAL assume true; 8251#fibo1EXIT >#46#return; 7942#L25-1 call #t~ret7 := fibo1(~n - 2);< 8216#fibo1ENTRY ~n := #in~n; 8253#L10 assume ~n < 1;#res := 0; 7941#fibo1FINAL assume true; 7943#fibo1EXIT >#48#return; 8214#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8213#fibo2FINAL assume true; 8117#fibo2EXIT >#50#return; 8118#L15-1 [2022-07-13 04:20:39,158 INFO L754 eck$LassoCheckResult]: Loop: 8118#L15-1 call #t~ret5 := fibo2(~n - 2);< 8129#fibo2ENTRY ~n := #in~n; 8173#L20 assume !(~n < 1); 8152#L22 assume !(1 == ~n); 8143#L25 call #t~ret6 := fibo1(~n - 1);< 8150#fibo1ENTRY ~n := #in~n; 8188#L10 assume !(~n < 1); 8185#L12 assume !(1 == ~n); 8125#L15 call #t~ret4 := fibo2(~n - 1);< 8137#fibo2ENTRY ~n := #in~n; 8183#L20 assume !(~n < 1); 8178#L22 assume !(1 == ~n); 8179#L25 call #t~ret6 := fibo1(~n - 1);< 8203#fibo1ENTRY ~n := #in~n; 8206#L10 assume !(~n < 1); 8205#L12 assume 1 == ~n;#res := 1; 8204#fibo1FINAL assume true; 8202#fibo1EXIT >#46#return; 8147#L25-1 call #t~ret7 := fibo1(~n - 2);< 8181#fibo1ENTRY ~n := #in~n; 8224#L10 assume ~n < 1;#res := 0; 8155#fibo1FINAL assume true; 8180#fibo1EXIT >#48#return; 8177#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8175#fibo2FINAL assume true; 8164#fibo2EXIT >#50#return; 8118#L15-1 [2022-07-13 04:20:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199334, now seen corresponding path program 2 times [2022-07-13 04:20:39,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:39,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488337126] [2022-07-13 04:20:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:39,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-13 04:20:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 04:20:39,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:39,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488337126] [2022-07-13 04:20:39,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488337126] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:39,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474207952] [2022-07-13 04:20:39,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 04:20:39,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:39,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,340 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:39,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-07-13 04:20:39,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 04:20:39,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 04:20:39,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-13 04:20:39,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 04:20:39,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 04:20:39,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474207952] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:39,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:39,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2022-07-13 04:20:39,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907928544] [2022-07-13 04:20:39,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:39,580 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:39,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:39,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 2 times [2022-07-13 04:20:39,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:39,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946169976] [2022-07-13 04:20:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:39,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:39,584 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:39,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:39,817 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:39,817 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:39,817 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:39,817 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:39,817 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:39,817 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:39,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:39,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2022-07-13 04:20:39,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:39,817 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:39,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,871 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:39,871 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:39,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,873 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:39,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-07-13 04:20:39,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:39,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:39,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:39,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:39,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:39,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,902 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:39,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-07-13 04:20:39,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:39,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:39,922 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:39,922 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:39,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:39,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,942 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:39,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-07-13 04:20:39,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:39,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:39,960 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:39,960 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:39,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:39,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,977 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:39,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-07-13 04:20:39,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:39,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:40,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2022-07-13 04:20:40,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:40,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:40,009 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:40,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-07-13 04:20:40,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:40,011 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:41,025 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:41,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:41,028 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:41,028 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:41,028 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:41,028 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:41,029 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:41,029 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:41,029 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:41,029 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:41,029 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2022-07-13 04:20:41,029 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:41,029 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:41,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:41,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:41,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:41,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:41,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:41,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:41,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:41,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:41,113 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:41,113 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:41,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:41,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:41,115 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 04:20:41,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-07-13 04:20:41,117 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 [2022-07-13 04:20:41,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:41,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:41,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:41,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:41,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:41,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:41,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:41,139 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:41,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:41,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:41,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:41,156 INFO L229 MonitoredProcess]: Starting monitored process 59 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) [2022-07-13 04:20:41,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-07-13 04:20:41,158 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 [2022-07-13 04:20:41,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:41,165 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:41,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:41,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:41,165 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:41,173 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:41,173 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:41,174 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:41,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:41,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:41,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:41,191 INFO L229 MonitoredProcess]: Starting monitored process 60 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) [2022-07-13 04:20:41,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-07-13 04:20:41,193 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 [2022-07-13 04:20:41,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:41,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:41,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:41,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:41,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:41,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:41,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:41,199 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:41,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-07-13 04:20:41,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:41,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:41,216 INFO L229 MonitoredProcess]: Starting monitored process 61 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) [2022-07-13 04:20:41,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-07-13 04:20:41,218 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 [2022-07-13 04:20:41,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:41,223 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:41,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:41,224 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:41,224 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:41,224 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:41,224 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:41,232 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:41,234 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 04:20:41,234 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 04:20:41,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:41,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:41,245 INFO L229 MonitoredProcess]: Starting monitored process 62 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) [2022-07-13 04:20:41,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-07-13 04:20:41,247 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:41,247 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:41,247 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:41,247 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-07-13 04:20:41,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2022-07-13 04:20:41,263 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:41,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 04:20:41,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:41,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 04:20:41,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:41,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 04:20:41,643 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2022-07-13 04:20:41,644 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 321 states and 410 transitions. cyclomatic complexity: 95 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-13 04:20:41,958 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 321 states and 410 transitions. cyclomatic complexity: 95. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1107 states and 1416 transitions. Complement of second has 46 states. [2022-07-13 04:20:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:41,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-13 04:20:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2022-07-13 04:20:41,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 26 letters. [2022-07-13 04:20:41,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:41,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 74 letters. Loop has 26 letters. [2022-07-13 04:20:41,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:41,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 52 letters. [2022-07-13 04:20:41,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:41,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1107 states and 1416 transitions. [2022-07-13 04:20:41,973 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2022-07-13 04:20:41,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1107 states to 1020 states and 1321 transitions. [2022-07-13 04:20:41,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 429 [2022-07-13 04:20:41,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 453 [2022-07-13 04:20:41,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1020 states and 1321 transitions. [2022-07-13 04:20:41,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:41,983 INFO L369 hiAutomatonCegarLoop]: Abstraction has 1020 states and 1321 transitions. [2022-07-13 04:20:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states and 1321 transitions. [2022-07-13 04:20:41,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 963. [2022-07-13 04:20:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 631 states have (on average 1.1933438985736926) internal successors, (753), 691 states have internal predecessors, (753), 184 states have call successors, (190), 132 states have call predecessors, (190), 148 states have return successors, (305), 139 states have call predecessors, (305), 182 states have call successors, (305) [2022-07-13 04:20:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1248 transitions. [2022-07-13 04:20:42,006 INFO L392 hiAutomatonCegarLoop]: Abstraction has 963 states and 1248 transitions. [2022-07-13 04:20:42,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:42,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 04:20:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-07-13 04:20:42,007 INFO L87 Difference]: Start difference. First operand 963 states and 1248 transitions. Second operand has 26 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (13), 8 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-13 04:20:42,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:42,679 INFO L93 Difference]: Finished difference Result 1028 states and 1212 transitions. [2022-07-13 04:20:42,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 04:20:42,680 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1028 states and 1212 transitions. [2022-07-13 04:20:42,689 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 90 [2022-07-13 04:20:42,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1028 states to 450 states and 523 transitions. [2022-07-13 04:20:42,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 289 [2022-07-13 04:20:42,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 289 [2022-07-13 04:20:42,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 523 transitions. [2022-07-13 04:20:42,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:42,696 INFO L369 hiAutomatonCegarLoop]: Abstraction has 450 states and 523 transitions. [2022-07-13 04:20:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 523 transitions. [2022-07-13 04:20:42,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 402. [2022-07-13 04:20:42,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 266 states have (on average 1.112781954887218) internal successors, (296), 283 states have internal predecessors, (296), 83 states have call successors, (84), 63 states have call predecessors, (84), 53 states have return successors, (88), 55 states have call predecessors, (88), 66 states have call successors, (88) [2022-07-13 04:20:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 468 transitions. [2022-07-13 04:20:42,707 INFO L392 hiAutomatonCegarLoop]: Abstraction has 402 states and 468 transitions. [2022-07-13 04:20:42,707 INFO L374 stractBuchiCegarLoop]: Abstraction has 402 states and 468 transitions. [2022-07-13 04:20:42,707 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-13 04:20:42,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 402 states and 468 transitions. [2022-07-13 04:20:42,710 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 64 [2022-07-13 04:20:42,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:42,710 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:42,712 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:42,712 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:42,714 INFO L752 eck$LassoCheckResult]: Stem: 12047#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 12048#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 12076#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 12112#fibo1ENTRY ~n := #in~n; 12188#L10 assume !(~n < 1); 12187#L12 assume !(1 == ~n); 12183#L15 call #t~ret4 := fibo2(~n - 1);< 12186#fibo2ENTRY ~n := #in~n; 12185#L20 assume !(~n < 1); 12184#L22 assume !(1 == ~n); 12179#L25 call #t~ret6 := fibo1(~n - 1);< 12182#fibo1ENTRY ~n := #in~n; 12181#L10 assume !(~n < 1); 12180#L12 assume !(1 == ~n); 12175#L15 call #t~ret4 := fibo2(~n - 1);< 12178#fibo2ENTRY ~n := #in~n; 12177#L20 assume !(~n < 1); 12176#L22 assume !(1 == ~n); 12170#L25 call #t~ret6 := fibo1(~n - 1);< 12174#fibo1ENTRY ~n := #in~n; 12173#L10 assume !(~n < 1); 12172#L12 assume !(1 == ~n); 12106#L15 call #t~ret4 := fibo2(~n - 1);< 12171#fibo2ENTRY ~n := #in~n; 12212#L20 assume !(~n < 1); 12210#L22 assume !(1 == ~n); 12155#L25 call #t~ret6 := fibo1(~n - 1);< 12215#fibo1ENTRY ~n := #in~n; 12216#L10 assume !(~n < 1); 12230#L12 assume !(1 == ~n); 12226#L15 call #t~ret4 := fibo2(~n - 1);< 12227#fibo2ENTRY ~n := #in~n; 12232#L20 assume !(~n < 1); 12231#L22 assume 1 == ~n;#res := 1; 12229#fibo2FINAL assume true; 12225#fibo2EXIT >#50#return; 12222#L15-1 call #t~ret5 := fibo2(~n - 2);< 12223#fibo2ENTRY ~n := #in~n; 12228#L20 assume ~n < 1;#res := 0; 12224#fibo2FINAL assume true; 12221#fibo2EXIT >#52#return; 12220#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12219#fibo1FINAL assume true; 12154#fibo1EXIT >#46#return; 12139#L25-1 call #t~ret7 := fibo1(~n - 2);< 12068#fibo1ENTRY ~n := #in~n; 12138#L10 assume !(~n < 1); 12140#L12 assume !(1 == ~n); 12067#L15 call #t~ret4 := fibo2(~n - 1);< 12132#fibo2ENTRY ~n := #in~n; 12133#L20 assume !(~n < 1); 12122#L22 assume 1 == ~n;#res := 1; 12123#fibo2FINAL assume true; 12274#fibo2EXIT >#50#return; 12085#L15-1 [2022-07-13 04:20:42,714 INFO L754 eck$LassoCheckResult]: Loop: 12085#L15-1 call #t~ret5 := fibo2(~n - 2);< 12272#fibo2ENTRY ~n := #in~n; 12302#L20 assume !(~n < 1); 12264#L22 assume !(1 == ~n); 12251#L25 call #t~ret6 := fibo1(~n - 1);< 12259#fibo1ENTRY ~n := #in~n; 12289#L10 assume !(~n < 1); 12282#L12 assume !(1 == ~n); 12089#L15 call #t~ret4 := fibo2(~n - 1);< 12279#fibo2ENTRY ~n := #in~n; 12303#L20 assume !(~n < 1); 12376#L22 assume 1 == ~n;#res := 1; 12375#fibo2FINAL assume true; 12277#fibo2EXIT >#50#return; 12085#L15-1 [2022-07-13 04:20:42,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:42,715 INFO L85 PathProgramCache]: Analyzing trace with hash 628833608, now seen corresponding path program 1 times [2022-07-13 04:20:42,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:42,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899053735] [2022-07-13 04:20:42,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:42,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 04:20:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 04:20:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,863 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 04:20:42,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:42,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899053735] [2022-07-13 04:20:42,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899053735] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:42,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538015646] [2022-07-13 04:20:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:42,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:42,865 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:42,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-07-13 04:20:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 04:20:42,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 04:20:42,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 04:20:43,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538015646] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:43,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:43,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2022-07-13 04:20:43,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338733813] [2022-07-13 04:20:43,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:43,096 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1489002864, now seen corresponding path program 1 times [2022-07-13 04:20:43,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:43,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870529867] [2022-07-13 04:20:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:43,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:43,099 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:43,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:43,210 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:43,210 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:43,210 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:43,210 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:43,210 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:43,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:43,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:43,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:43,210 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2022-07-13 04:20:43,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:43,211 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:43,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,258 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:43,258 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:43,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:43,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:43,276 INFO L229 MonitoredProcess]: Starting monitored process 64 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) [2022-07-13 04:20:43,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-07-13 04:20:43,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:43,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:43,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2022-07-13 04:20:43,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:43,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:43,303 INFO L229 MonitoredProcess]: Starting monitored process 65 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) [2022-07-13 04:20:43,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-07-13 04:20:43,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:43,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:44,050 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:44,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:44,055 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:44,055 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:44,055 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:44,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:44,056 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:44,056 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:44,056 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:44,056 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:44,056 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2022-07-13 04:20:44,056 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:44,056 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:44,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:44,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:44,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:44,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:44,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:44,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:44,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:44,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:44,105 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:44,105 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:44,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:44,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:44,106 INFO L229 MonitoredProcess]: Starting monitored process 66 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) [2022-07-13 04:20:44,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-07-13 04:20:44,108 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 [2022-07-13 04:20:44,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:44,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:44,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:44,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:44,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:44,116 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:44,116 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:44,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:44,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2022-07-13 04:20:44,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:44,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:44,143 INFO L229 MonitoredProcess]: Starting monitored process 67 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) [2022-07-13 04:20:44,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-07-13 04:20:44,145 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 [2022-07-13 04:20:44,152 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:44,152 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:44,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:44,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:44,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:44,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:44,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:44,190 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:44,193 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 04:20:44,193 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 04:20:44,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:44,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:44,194 INFO L229 MonitoredProcess]: Starting monitored process 68 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) [2022-07-13 04:20:44,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-07-13 04:20:44,196 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:44,196 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:44,196 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:44,196 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-07-13 04:20:44,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:44,211 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:44,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:44,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 04:20:44,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:44,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 04:20:44,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:44,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:44,506 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-07-13 04:20:44,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 04:20:44,750 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 553 states and 633 transitions. Complement of second has 40 states. [2022-07-13 04:20:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:44,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 04:20:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 50 transitions. [2022-07-13 04:20:44,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 50 transitions. Stem has 54 letters. Loop has 14 letters. [2022-07-13 04:20:44,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:44,753 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:44,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:44,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 04:20:44,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:44,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:44,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 04:20:44,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:45,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:45,060 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2022-07-13 04:20:45,060 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 04:20:45,231 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 475 states and 545 transitions. Complement of second has 26 states. [2022-07-13 04:20:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 04:20:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 31 transitions. [2022-07-13 04:20:45,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 31 transitions. Stem has 54 letters. Loop has 14 letters. [2022-07-13 04:20:45,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:45,232 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:45,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 04:20:45,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:45,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 04:20:45,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:45,552 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-07-13 04:20:45,553 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 04:20:45,793 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1507 states and 1740 transitions. Complement of second has 102 states. [2022-07-13 04:20:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-13 04:20:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2022-07-13 04:20:45,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 14 letters. [2022-07-13 04:20:45,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:45,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 68 letters. Loop has 14 letters. [2022-07-13 04:20:45,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:45,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 28 letters. [2022-07-13 04:20:45,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:45,797 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1507 states and 1740 transitions. [2022-07-13 04:20:45,817 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 166 [2022-07-13 04:20:45,822 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1507 states to 892 states and 1055 transitions. [2022-07-13 04:20:45,822 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 415 [2022-07-13 04:20:45,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 462 [2022-07-13 04:20:45,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 892 states and 1055 transitions. [2022-07-13 04:20:45,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:45,823 INFO L369 hiAutomatonCegarLoop]: Abstraction has 892 states and 1055 transitions. [2022-07-13 04:20:45,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states and 1055 transitions. [2022-07-13 04:20:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 798. [2022-07-13 04:20:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 525 states have (on average 1.1123809523809525) internal successors, (584), 569 states have internal predecessors, (584), 160 states have call successors, (170), 121 states have call predecessors, (170), 113 states have return successors, (181), 107 states have call predecessors, (181), 136 states have call successors, (181) [2022-07-13 04:20:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 935 transitions. [2022-07-13 04:20:45,837 INFO L392 hiAutomatonCegarLoop]: Abstraction has 798 states and 935 transitions. [2022-07-13 04:20:45,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:45,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 04:20:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-07-13 04:20:45,838 INFO L87 Difference]: Start difference. First operand 798 states and 935 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 14 states have internal predecessors, (41), 10 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-13 04:20:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:46,204 INFO L93 Difference]: Finished difference Result 617 states and 721 transitions. [2022-07-13 04:20:46,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 04:20:46,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 617 states and 721 transitions. [2022-07-13 04:20:46,208 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2022-07-13 04:20:46,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 617 states to 496 states and 589 transitions. [2022-07-13 04:20:46,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 281 [2022-07-13 04:20:46,211 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 305 [2022-07-13 04:20:46,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 589 transitions. [2022-07-13 04:20:46,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:46,211 INFO L369 hiAutomatonCegarLoop]: Abstraction has 496 states and 589 transitions. [2022-07-13 04:20:46,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 589 transitions. [2022-07-13 04:20:46,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 491. [2022-07-13 04:20:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 320 states have (on average 1.1125) internal successors, (356), 350 states have internal predecessors, (356), 97 states have call successors, (103), 69 states have call predecessors, (103), 74 states have return successors, (122), 71 states have call predecessors, (122), 88 states have call successors, (122) [2022-07-13 04:20:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 581 transitions. [2022-07-13 04:20:46,219 INFO L392 hiAutomatonCegarLoop]: Abstraction has 491 states and 581 transitions. [2022-07-13 04:20:46,219 INFO L374 stractBuchiCegarLoop]: Abstraction has 491 states and 581 transitions. [2022-07-13 04:20:46,219 INFO L287 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-07-13 04:20:46,219 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 491 states and 581 transitions. [2022-07-13 04:20:46,221 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2022-07-13 04:20:46,221 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:46,221 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:46,222 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:46,222 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:46,222 INFO L752 eck$LassoCheckResult]: Stem: 17665#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 17666#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 17700#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17741#fibo1ENTRY ~n := #in~n; 17805#L10 assume !(~n < 1); 17803#L12 assume !(1 == ~n); 17800#L15 call #t~ret4 := fibo2(~n - 1);< 17801#fibo2ENTRY ~n := #in~n; 17821#L20 assume !(~n < 1); 17815#L22 assume !(1 == ~n); 17811#L25 call #t~ret6 := fibo1(~n - 1);< 17812#fibo1ENTRY ~n := #in~n; 17860#L10 assume !(~n < 1); 17859#L12 assume !(1 == ~n); 17850#L15 call #t~ret4 := fibo2(~n - 1);< 17851#fibo2ENTRY ~n := #in~n; 17878#L20 assume !(~n < 1); 17875#L22 assume !(1 == ~n); 17872#L25 call #t~ret6 := fibo1(~n - 1);< 17873#fibo1ENTRY ~n := #in~n; 17895#L10 assume !(~n < 1); 17893#L12 assume !(1 == ~n); 17891#L15 call #t~ret4 := fibo2(~n - 1);< 17892#fibo2ENTRY ~n := #in~n; 17906#L20 assume !(~n < 1); 17904#L22 assume !(1 == ~n); 17901#L25 call #t~ret6 := fibo1(~n - 1);< 17902#fibo1ENTRY ~n := #in~n; 17923#L10 assume !(~n < 1); 17921#L12 assume !(1 == ~n); 17918#L15 call #t~ret4 := fibo2(~n - 1);< 17919#fibo2ENTRY ~n := #in~n; 17926#L20 assume !(~n < 1); 17922#L22 assume 1 == ~n;#res := 1; 17920#fibo2FINAL assume true; 17917#fibo2EXIT >#50#return; 17913#L15-1 call #t~ret5 := fibo2(~n - 2);< 17914#fibo2ENTRY ~n := #in~n; 17953#L20 assume ~n < 1;#res := 0; 17952#fibo2FINAL assume true; 17912#fibo2EXIT >#52#return; 17910#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17908#fibo1FINAL assume true; 17900#fibo1EXIT >#46#return; 17898#L25-1 call #t~ret7 := fibo1(~n - 2);< 17899#fibo1ENTRY ~n := #in~n; 17907#L10 assume !(~n < 1); 17905#L12 assume 1 == ~n;#res := 1; 17903#fibo1FINAL assume true; 17897#fibo1EXIT >#48#return; 17896#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17894#fibo2FINAL assume true; 17890#fibo2EXIT >#50#return; 17685#L15-1 call #t~ret5 := fibo2(~n - 2);< 17877#fibo2ENTRY ~n := #in~n; 17915#L20 assume !(~n < 1); 17911#L22 assume 1 == ~n;#res := 1; 17909#fibo2FINAL assume true; 17889#fibo2EXIT >#52#return; 17876#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17888#fibo1FINAL assume true; 17871#fibo1EXIT >#46#return; 17841#L25-1 call #t~ret7 := fibo1(~n - 2);< 17848#fibo1ENTRY ~n := #in~n; 17966#L10 assume !(~n < 1); 17931#L12 assume !(1 == ~n); 17687#L15 call #t~ret4 := fibo2(~n - 1);< 17925#fibo2ENTRY [2022-07-13 04:20:46,222 INFO L754 eck$LassoCheckResult]: Loop: 17925#fibo2ENTRY ~n := #in~n; 17934#L20 assume !(~n < 1); 17930#L22 assume !(1 == ~n); 17737#L25 call #t~ret6 := fibo1(~n - 1);< 18088#fibo1ENTRY ~n := #in~n; 17933#L10 assume !(~n < 1); 17928#L12 assume !(1 == ~n); 17683#L15 call #t~ret4 := fibo2(~n - 1);< 17925#fibo2ENTRY [2022-07-13 04:20:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:46,222 INFO L85 PathProgramCache]: Analyzing trace with hash 930400901, now seen corresponding path program 1 times [2022-07-13 04:20:46,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:46,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805545181] [2022-07-13 04:20:46,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:46,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:46,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-13 04:20:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:46,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:46,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:46,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:46,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 04:20:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:46,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 04:20:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 04:20:46,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:46,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805545181] [2022-07-13 04:20:46,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805545181] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:46,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862616618] [2022-07-13 04:20:46,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:46,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:46,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:46,425 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:46,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-07-13 04:20:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:46,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 04:20:46,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:46,529 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 04:20:46,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 04:20:46,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862616618] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:46,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:46,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 25 [2022-07-13 04:20:46,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076364739] [2022-07-13 04:20:46,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:46,688 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2022-07-13 04:20:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813635958] [2022-07-13 04:20:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:46,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:46,690 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:46,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:46,787 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:46,787 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:46,787 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:46,787 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:46,787 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:46,787 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:46,787 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:46,787 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:46,787 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2022-07-13 04:20:46,787 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:46,795 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:46,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,841 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:46,842 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:46,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:46,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:46,843 INFO L229 MonitoredProcess]: Starting monitored process 70 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) [2022-07-13 04:20:46,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2022-07-13 04:20:46,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:46,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:46,851 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:46,851 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:46,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2022-07-13 04:20:46,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:46,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:46,867 INFO L229 MonitoredProcess]: Starting monitored process 71 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) [2022-07-13 04:20:46,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2022-07-13 04:20:46,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:46,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:46,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2022-07-13 04:20:46,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:46,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:46,892 INFO L229 MonitoredProcess]: Starting monitored process 72 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) [2022-07-13 04:20:46,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2022-07-13 04:20:46,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:46,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:46,953 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:46,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2022-07-13 04:20:46,956 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:46,956 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:46,956 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:46,956 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:46,956 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:46,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:46,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:46,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:46,956 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2022-07-13 04:20:46,956 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:46,956 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:46,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:46,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:47,003 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:47,003 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:47,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:47,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:47,005 INFO L229 MonitoredProcess]: Starting monitored process 73 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) [2022-07-13 04:20:47,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2022-07-13 04:20:47,007 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 [2022-07-13 04:20:47,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:47,012 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:47,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:47,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:47,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:47,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:47,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:47,014 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:47,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2022-07-13 04:20:47,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:47,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:47,030 INFO L229 MonitoredProcess]: Starting monitored process 74 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) [2022-07-13 04:20:47,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2022-07-13 04:20:47,032 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 [2022-07-13 04:20:47,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:47,038 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:47,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:47,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:47,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:47,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:47,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:47,040 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:47,041 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-13 04:20:47,041 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 04:20:47,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:47,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:47,042 INFO L229 MonitoredProcess]: Starting monitored process 75 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) [2022-07-13 04:20:47,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2022-07-13 04:20:47,044 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:47,044 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:47,044 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:47,044 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-07-13 04:20:47,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:47,059 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:47,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 04:20:47,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:47,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:47,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:47,423 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-13 04:20:47,423 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:47,489 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 516 states and 606 transitions. Complement of second has 15 states. [2022-07-13 04:20:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2022-07-13 04:20:47,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2022-07-13 04:20:47,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:47,496 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:47,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:47,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 04:20:47,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:47,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:47,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:47,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:47,864 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-13 04:20:47,865 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:47,929 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 516 states and 606 transitions. Complement of second has 15 states. [2022-07-13 04:20:47,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:47,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:47,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2022-07-13 04:20:47,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2022-07-13 04:20:47,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:47,930 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:47,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:47,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 04:20:47,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:48,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:48,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:48,283 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-13 04:20:48,283 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:48,379 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 764 states and 882 transitions. Complement of second has 25 states. [2022-07-13 04:20:48,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2022-07-13 04:20:48,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2022-07-13 04:20:48,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:48,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 75 letters. Loop has 8 letters. [2022-07-13 04:20:48,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:48,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 16 letters. [2022-07-13 04:20:48,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:48,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 764 states and 882 transitions. [2022-07-13 04:20:48,387 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2022-07-13 04:20:48,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 764 states to 568 states and 666 transitions. [2022-07-13 04:20:48,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 298 [2022-07-13 04:20:48,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 328 [2022-07-13 04:20:48,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 568 states and 666 transitions. [2022-07-13 04:20:48,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:48,396 INFO L369 hiAutomatonCegarLoop]: Abstraction has 568 states and 666 transitions. [2022-07-13 04:20:48,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states and 666 transitions. [2022-07-13 04:20:48,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 539. [2022-07-13 04:20:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 357 states have (on average 1.112044817927171) internal successors, (397), 388 states have internal predecessors, (397), 104 states have call successors, (110), 77 states have call predecessors, (110), 78 states have return successors, (125), 73 states have call predecessors, (125), 94 states have call successors, (125) [2022-07-13 04:20:48,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 632 transitions. [2022-07-13 04:20:48,406 INFO L392 hiAutomatonCegarLoop]: Abstraction has 539 states and 632 transitions. [2022-07-13 04:20:48,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 04:20:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-07-13 04:20:48,407 INFO L87 Difference]: Start difference. First operand 539 states and 632 transitions. Second operand has 25 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 13 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-13 04:20:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:48,879 INFO L93 Difference]: Finished difference Result 683 states and 845 transitions. [2022-07-13 04:20:48,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-13 04:20:48,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 683 states and 845 transitions. [2022-07-13 04:20:48,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2022-07-13 04:20:48,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 683 states to 623 states and 768 transitions. [2022-07-13 04:20:48,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 335 [2022-07-13 04:20:48,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 335 [2022-07-13 04:20:48,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 623 states and 768 transitions. [2022-07-13 04:20:48,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:48,887 INFO L369 hiAutomatonCegarLoop]: Abstraction has 623 states and 768 transitions. [2022-07-13 04:20:48,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states and 768 transitions. [2022-07-13 04:20:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 575. [2022-07-13 04:20:48,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 377 states have (on average 1.1114058355437666) internal successors, (419), 403 states have internal predecessors, (419), 115 states have call successors, (121), 80 states have call predecessors, (121), 83 states have return successors, (167), 91 states have call predecessors, (167), 99 states have call successors, (167) [2022-07-13 04:20:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 707 transitions. [2022-07-13 04:20:48,896 INFO L392 hiAutomatonCegarLoop]: Abstraction has 575 states and 707 transitions. [2022-07-13 04:20:48,896 INFO L374 stractBuchiCegarLoop]: Abstraction has 575 states and 707 transitions. [2022-07-13 04:20:48,896 INFO L287 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-07-13 04:20:48,896 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 575 states and 707 transitions. [2022-07-13 04:20:48,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2022-07-13 04:20:48,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:48,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:48,901 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 7, 7, 6, 6, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:48,901 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:48,902 INFO L752 eck$LassoCheckResult]: Stem: 22504#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 22505#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 22536#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 22576#fibo1ENTRY ~n := #in~n; 22609#L10 assume !(~n < 1); 22607#L12 assume !(1 == ~n); 22604#L15 call #t~ret4 := fibo2(~n - 1);< 22605#fibo2ENTRY ~n := #in~n; 22619#L20 assume !(~n < 1); 22617#L22 assume !(1 == ~n); 22614#L25 call #t~ret6 := fibo1(~n - 1);< 22615#fibo1ENTRY ~n := #in~n; 22638#L10 assume !(~n < 1); 22636#L12 assume !(1 == ~n); 22633#L15 call #t~ret4 := fibo2(~n - 1);< 22634#fibo2ENTRY ~n := #in~n; 22657#L20 assume !(~n < 1); 22655#L22 assume !(1 == ~n); 22652#L25 call #t~ret6 := fibo1(~n - 1);< 22653#fibo1ENTRY ~n := #in~n; 22675#L10 assume !(~n < 1); 22673#L12 assume !(1 == ~n); 22670#L15 call #t~ret4 := fibo2(~n - 1);< 22671#fibo2ENTRY ~n := #in~n; 22688#L20 assume !(~n < 1); 22685#L22 assume !(1 == ~n); 22681#L25 call #t~ret6 := fibo1(~n - 1);< 22682#fibo1ENTRY ~n := #in~n; 22700#L10 assume !(~n < 1); 22698#L12 assume !(1 == ~n); 22694#L15 call #t~ret4 := fibo2(~n - 1);< 22695#fibo2ENTRY ~n := #in~n; 22701#L20 assume !(~n < 1); 22699#L22 assume 1 == ~n;#res := 1; 22697#fibo2FINAL assume true; 22693#fibo2EXIT >#50#return; 22690#L15-1 call #t~ret5 := fibo2(~n - 2);< 22691#fibo2ENTRY ~n := #in~n; 22696#L20 assume ~n < 1;#res := 0; 22692#fibo2FINAL assume true; 22689#fibo2EXIT >#52#return; 22687#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 22684#fibo1FINAL assume true; 22680#fibo1EXIT >#46#return; 22677#L25-1 call #t~ret7 := fibo1(~n - 2);< 22678#fibo1ENTRY ~n := #in~n; 22686#L10 assume !(~n < 1); 22683#L12 assume 1 == ~n;#res := 1; 22679#fibo1FINAL assume true; 22676#fibo1EXIT >#48#return; 22674#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 22672#fibo2FINAL assume true; 22669#fibo2EXIT >#50#return; 22666#L15-1 call #t~ret5 := fibo2(~n - 2);< 22668#fibo2ENTRY ~n := #in~n; 22738#L20 assume !(~n < 1); 22735#L22 assume !(1 == ~n); 22733#L25 call #t~ret6 := fibo1(~n - 1);< 22734#fibo1ENTRY ~n := #in~n; 22918#L10 assume !(~n < 1); 22919#L12 assume !(1 == ~n); 22514#L15 call #t~ret4 := fibo2(~n - 1);< 22978#fibo2ENTRY ~n := #in~n; 22565#L20 assume !(~n < 1); 22510#L22 assume !(1 == ~n); 22513#L25 call #t~ret6 := fibo1(~n - 1);< 23057#fibo1ENTRY ~n := #in~n; 23056#L10 assume !(~n < 1); 23055#L12 assume !(1 == ~n); 22546#L15 [2022-07-13 04:20:48,902 INFO L754 eck$LassoCheckResult]: Loop: 22546#L15 call #t~ret4 := fibo2(~n - 1);< 23005#fibo2ENTRY ~n := #in~n; 23006#L20 assume !(~n < 1); 23058#L22 assume !(1 == ~n); 23007#L25 call #t~ret6 := fibo1(~n - 1);< 23057#fibo1ENTRY ~n := #in~n; 23056#L10 assume !(~n < 1); 23055#L12 assume !(1 == ~n); 22546#L15 [2022-07-13 04:20:48,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1054902100, now seen corresponding path program 2 times [2022-07-13 04:20:48,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:48,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484465105] [2022-07-13 04:20:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:48,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 04:20:49,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:49,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 04:20:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 04:20:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:49,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484465105] [2022-07-13 04:20:49,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484465105] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:49,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808568245] [2022-07-13 04:20:49,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 04:20:49,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:49,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:49,025 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 04:20:49,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-07-13 04:20:49,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 04:20:49,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 04:20:49,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 04:20:49,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 04:20:49,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:49,166 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 04:20:49,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808568245] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:49,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:49,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 20 [2022-07-13 04:20:49,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432548108] [2022-07-13 04:20:49,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:49,166 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:49,167 INFO L85 PathProgramCache]: Analyzing trace with hash 519237434, now seen corresponding path program 4 times [2022-07-13 04:20:49,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:49,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150350106] [2022-07-13 04:20:49,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:49,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:49,170 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:49,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:49,258 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:49,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:49,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:49,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:49,259 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:49,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:49,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:49,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:49,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2022-07-13 04:20:49,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:49,259 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:49,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:49,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:49,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:49,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:49,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:49,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:49,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:49,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:49,310 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:49,310 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:49,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:49,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:49,312 INFO L229 MonitoredProcess]: Starting monitored process 77 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) [2022-07-13 04:20:49,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2022-07-13 04:20:49,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:49,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:49,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:49,361 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:49,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:49,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:49,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:49,377 INFO L229 MonitoredProcess]: Starting monitored process 78 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) [2022-07-13 04:20:49,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2022-07-13 04:20:49,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:49,379 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:49,396 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:49,396 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:49,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:49,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:49,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:49,413 INFO L229 MonitoredProcess]: Starting monitored process 79 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) [2022-07-13 04:20:49,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2022-07-13 04:20:49,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:49,415 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:49,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:49,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:49,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:49,443 INFO L229 MonitoredProcess]: Starting monitored process 80 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) [2022-07-13 04:20:49,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2022-07-13 04:20:49,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:49,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:50,843 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:50,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:50,849 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:50,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:50,849 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:50,850 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:50,850 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:50,850 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:50,850 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:50,850 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:50,850 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2022-07-13 04:20:50,850 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:50,850 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:50,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:50,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:50,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:50,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:50,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:50,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:50,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:50,868 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:50,912 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:50,913 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:50,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:50,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:50,914 INFO L229 MonitoredProcess]: Starting monitored process 81 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) [2022-07-13 04:20:50,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2022-07-13 04:20:50,916 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 [2022-07-13 04:20:50,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:50,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:50,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:50,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:50,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:50,922 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:50,922 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:50,923 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:50,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2022-07-13 04:20:50,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:50,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:50,939 INFO L229 MonitoredProcess]: Starting monitored process 82 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) [2022-07-13 04:20:50,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2022-07-13 04:20:50,941 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 [2022-07-13 04:20:50,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:50,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:50,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:50,948 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:50,948 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:50,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:50,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:50,950 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:50,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:50,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:50,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:50,966 INFO L229 MonitoredProcess]: Starting monitored process 83 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) [2022-07-13 04:20:50,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2022-07-13 04:20:50,968 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 [2022-07-13 04:20:50,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:50,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:50,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:50,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:50,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:50,975 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:50,975 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:50,977 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:50,979 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 04:20:50,979 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 04:20:50,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:50,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:50,980 INFO L229 MonitoredProcess]: Starting monitored process 84 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) [2022-07-13 04:20:50,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2022-07-13 04:20:50,982 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:50,982 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:50,982 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:50,982 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-07-13 04:20:50,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2022-07-13 04:20:50,997 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:51,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:51,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 04:20:51,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:51,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:51,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:51,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:51,352 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-07-13 04:20:51,352 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:51,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:51,429 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 606 states and 738 transitions. Complement of second has 19 states. [2022-07-13 04:20:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:51,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2022-07-13 04:20:51,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 69 letters. Loop has 8 letters. [2022-07-13 04:20:51,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:51,430 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:51,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:51,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 04:20:51,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:51,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:51,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:51,730 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2022-07-13 04:20:51,730 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:51,821 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 606 states and 738 transitions. Complement of second has 21 states. [2022-07-13 04:20:51,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2022-07-13 04:20:51,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 69 letters. Loop has 8 letters. [2022-07-13 04:20:51,822 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:51,823 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:51,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 04:20:51,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:52,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:52,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:52,110 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-07-13 04:20:52,110 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:52,201 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 1123 states and 1346 transitions. Complement of second has 33 states. [2022-07-13 04:20:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-13 04:20:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2022-07-13 04:20:52,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2022-07-13 04:20:52,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:52,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2022-07-13 04:20:52,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:52,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2022-07-13 04:20:52,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:52,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1123 states and 1346 transitions. [2022-07-13 04:20:52,208 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 04:20:52,208 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1123 states to 0 states and 0 transitions. [2022-07-13 04:20:52,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 04:20:52,209 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 04:20:52,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 04:20:52,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 04:20:52,209 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 04:20:52,209 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 04:20:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:52,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 04:20:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-07-13 04:20:52,210 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 12 states have internal predecessors, (46), 10 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 04:20:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:52,210 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-13 04:20:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 04:20:52,210 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-13 04:20:52,210 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 04:20:52,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 04:20:52,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 04:20:52,211 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 04:20:52,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 04:20:52,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 04:20:52,211 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 04:20:52,211 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 04:20:52,211 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 04:20:52,211 INFO L287 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-07-13 04:20:52,211 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-13 04:20:52,211 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 04:20:52,211 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-13 04:20:52,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 04:20:52 BoogieIcfgContainer [2022-07-13 04:20:52,217 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 04:20:52,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 04:20:52,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 04:20:52,218 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 04:20:52,218 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:20:29" (3/4) ... [2022-07-13 04:20:52,220 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 04:20:52,220 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 04:20:52,222 INFO L158 Benchmark]: Toolchain (without parser) took 22842.24ms. Allocated memory was 102.8MB in the beginning and 186.6MB in the end (delta: 83.9MB). Free memory was 63.3MB in the beginning and 116.4MB in the end (delta: -53.0MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2022-07-13 04:20:52,222 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 04:20:52,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.57ms. Allocated memory is still 102.8MB. Free memory was 63.1MB in the beginning and 78.0MB in the end (delta: -14.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 04:20:52,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.39ms. Allocated memory is still 102.8MB. Free memory was 78.0MB in the beginning and 76.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 04:20:52,223 INFO L158 Benchmark]: Boogie Preprocessor took 20.11ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 75.6MB in the end (delta: 918.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 04:20:52,223 INFO L158 Benchmark]: RCFGBuilder took 221.53ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 66.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 04:20:52,223 INFO L158 Benchmark]: BuchiAutomizer took 22387.38ms. Allocated memory was 102.8MB in the beginning and 186.6MB in the end (delta: 83.9MB). Free memory was 66.7MB in the beginning and 117.4MB in the end (delta: -50.7MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2022-07-13 04:20:52,223 INFO L158 Benchmark]: Witness Printer took 2.55ms. Allocated memory is still 186.6MB. Free memory was 117.4MB in the beginning and 116.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 04:20:52,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.57ms. Allocated memory is still 102.8MB. Free memory was 63.1MB in the beginning and 78.0MB in the end (delta: -14.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.39ms. Allocated memory is still 102.8MB. Free memory was 78.0MB in the beginning and 76.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.11ms. Allocated memory is still 102.8MB. Free memory was 76.6MB in the beginning and 75.6MB in the end (delta: 918.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 221.53ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 66.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 22387.38ms. Allocated memory was 102.8MB in the beginning and 186.6MB in the end (delta: 83.9MB). Free memory was 66.7MB in the beginning and 117.4MB in the end (delta: -50.7MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. * Witness Printer took 2.55ms. Allocated memory is still 186.6MB. Free memory was 117.4MB in the beginning and 116.4MB in the end (delta: 1.0MB). 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 16 terminating modules (9 trivial, 3 deterministic, 4 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 9 modules have a trivial ranking function, the largest among these consists of 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 22.3s and 11 iterations. TraceHistogramMax:7. Analysis of lassos took 12.4s. Construction of modules took 2.0s. Büchi inclusion checks took 7.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 14. Automata minimization 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 497 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/19 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1375 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1332 mSDsluCounter, 1624 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1116 mSDsCounter, 817 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4603 IncrementalHoareTripleChecker+Invalid, 5420 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 817 mSolverCounterUnsat, 508 mSDtfsCounter, 4603 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp93 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq182 hnf94 smp66 dnf100 smp100 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-13 04:20:52,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-07-13 04:20:52,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:52,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-07-13 04:20:52,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-07-13 04:20:53,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-07-13 04:20:53,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-07-13 04:20:53,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-07-13 04:20:53,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-07-13 04:20:53,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-07-13 04:20:54,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-13 04:20:54,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE