./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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_5-2.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 eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:40:46,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:40:46,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:40:46,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:40:46,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:40:46,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:40:46,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:40:46,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:40:46,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:40:46,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:40:46,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:40:46,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:40:46,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:40:46,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:40:46,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:40:46,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:40:46,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:40:46,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:40:46,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:40:46,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:40:46,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:40:46,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:40:46,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:40:46,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:40:46,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:40:46,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:40:46,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:40:46,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:40:46,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:40:46,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:40:46,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:40:46,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:40:46,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:40:46,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:40:46,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:40:46,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:40:46,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:40:46,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:40:46,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:40:46,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:40:46,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:40:46,298 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:40:46,319 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:40:46,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:40:46,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:40:46,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:40:46,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:40:46,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:40:46,325 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:40:46,325 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:40:46,325 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:40:46,326 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:40:46,326 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:40:46,327 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:40:46,327 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:40:46,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:40:46,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:40:46,328 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:40:46,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:40:46,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:40:46,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:40:46,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:40:46,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:40:46,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:40:46,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:40:46,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:40:46,330 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:40:46,330 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:40:46,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:40:46,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:40:46,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:40:46,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:40:46,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:40:46,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:40:46,332 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:40:46,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2021-12-14 23:40:46,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:40:46,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:40:46,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:40:46,588 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:40:46,588 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:40:46,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2021-12-14 23:40:46,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899436b14/3bd18dbf34d7433c82cb5cedc6507657/FLAG3130dd484 [2021-12-14 23:40:47,001 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:40:47,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2021-12-14 23:40:47,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899436b14/3bd18dbf34d7433c82cb5cedc6507657/FLAG3130dd484 [2021-12-14 23:40:47,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899436b14/3bd18dbf34d7433c82cb5cedc6507657 [2021-12-14 23:40:47,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:40:47,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:40:47,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:40:47,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:40:47,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:40:47,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3a229d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47, skipping insertion in model container [2021-12-14 23:40:47,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:40:47,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:40:47,171 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_5-2.c[946,959] [2021-12-14 23:40:47,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:40:47,177 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:40:47,189 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_5-2.c[946,959] [2021-12-14 23:40:47,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:40:47,199 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:40:47,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47 WrapperNode [2021-12-14 23:40:47,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:40:47,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:40:47,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:40:47,201 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:40:47,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,231 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-14 23:40:47,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:40:47,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:40:47,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:40:47,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:40:47,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:40:47,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:40:47,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:40:47,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:40:47,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (1/1) ... [2021-12-14 23:40:47,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:47,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:47,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:47,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-14 23:40:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:40:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:40:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-12-14 23:40:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-12-14 23:40:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-12-14 23:40:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-12-14 23:40:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:40:47,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:40:47,366 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:40:47,367 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:40:47,455 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:40:47,460 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:40:47,460 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 23:40:47,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:47 BoogieIcfgContainer [2021-12-14 23:40:47,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:40:47,463 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:40:47,463 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:40:47,466 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:40:47,466 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:40:47,466 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:40:47" (1/3) ... [2021-12-14 23:40:47,467 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27b6f355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:40:47, skipping insertion in model container [2021-12-14 23:40:47,467 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:40:47,468 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:40:47" (2/3) ... [2021-12-14 23:40:47,468 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27b6f355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:40:47, skipping insertion in model container [2021-12-14 23:40:47,468 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:40:47,468 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:47" (3/3) ... [2021-12-14 23:40:47,469 INFO L388 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2021-12-14 23:40:47,503 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:40:47,504 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:40:47,504 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:40:47,504 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:40:47,504 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:40:47,504 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:40:47,504 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:40:47,505 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:40:47,516 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) [2021-12-14 23:40:47,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-14 23:40:47,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:47,533 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:47,538 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 23:40:47,538 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:47,538 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:40:47,538 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) [2021-12-14 23:40:47,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-14 23:40:47,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:47,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:47,542 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 23:40:47,543 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:47,548 INFO L791 eck$LassoCheckResult]: Stem: 16#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); 7#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 := 5; 15#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5#fibo1ENTRYtrue [2021-12-14 23:40:47,549 INFO L793 eck$LassoCheckResult]: Loop: 5#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 10#L15true call #t~ret4 := fibo2(~n - 1);< 14#fibo2ENTRYtrue ~n := #in~n; 12#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 23#L25true call #t~ret6 := fibo1(~n - 1);< 5#fibo1ENTRYtrue [2021-12-14 23:40:47,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-12-14 23:40:47,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:47,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862418131] [2021-12-14 23:40:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:47,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:47,658 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:47,702 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:47,712 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-12-14 23:40:47,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:47,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881927938] [2021-12-14 23:40:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:47,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:47,727 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:47,738 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:47,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-12-14 23:40:47,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:47,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140191689] [2021-12-14 23:40:47,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:47,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:47,772 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:47,797 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:47,996 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:40:47,996 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:40:47,997 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:40:47,997 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:40:47,998 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:40:47,998 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:47,998 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:40:47,998 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:40:47,998 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2021-12-14 23:40:47,998 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:40:47,999 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:40:48,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,137 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:40:48,137 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:40:48,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-14 23:40:48,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,171 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:48,172 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:48,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-14 23:40:48,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,202 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,225 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:48,225 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:48,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-14 23:40:48,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,257 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,281 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:48,281 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:48,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-14 23:40:48,336 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:48,336 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:48,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-14 23:40:48,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,387 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:48,387 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:48,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-14 23:40:48,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,417 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,440 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:48,440 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:48,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-14 23:40:48,469 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,469 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:48,491 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:48,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-14 23:40:48,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-14 23:40:48,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,540 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:48,540 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:48,557 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 [2021-12-14 23:40:48,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,559 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-14 23:40:48,579 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:48,579 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:48,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,596 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-14 23:40:48,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:48,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,655 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:40:48,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:48,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-14 23:40:48,740 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:40:48,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,747 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:40:48,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:40:48,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:40:48,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:40:48,748 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:40:48,748 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:40:48,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:40:48,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2021-12-14 23:40:48,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:40:48,748 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:40:48,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:48,834 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:40:48,837 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:40:48,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,840 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-14 23:40:48,843 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 [2021-12-14 23:40:48,850 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:48,850 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:48,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:48,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:48,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:48,853 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:48,853 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:48,868 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:48,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,888 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-14 23:40:48,892 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:48,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:48,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:48,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:48,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:48,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:48,899 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:48,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:48,909 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:48,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-14 23:40:48,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,927 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-14 23:40:48,934 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:48,939 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:48,939 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:48,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:48,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:48,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:48,940 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:48,940 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:48,949 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:48,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-14 23:40:48,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,967 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-14 23:40:48,970 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:48,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:48,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:48,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:48,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:48,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:48,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:48,977 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:48,978 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:48,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:48,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:48,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:48,995 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:48,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-14 23:40:48,998 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:49,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:49,003 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:49,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:49,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:49,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:49,004 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:49,004 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:49,006 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:49,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:49,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:49,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:49,022 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:49,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-14 23:40:49,024 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:49,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:49,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:49,031 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:49,031 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:49,031 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:49,032 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:49,032 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:49,034 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:49,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:49,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:49,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:49,051 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:49,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-14 23:40:49,053 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:49,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:49,061 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:49,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:49,061 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:49,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:49,062 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:49,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:49,075 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:49,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:49,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:49,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:49,091 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:49,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-14 23:40:49,094 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:49,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:49,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:49,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:49,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:49,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:49,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:49,103 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:49,115 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:40:49,118 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:40:49,118 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 23:40:49,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:49,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:49,128 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:49,133 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:40:49,133 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:40:49,133 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:40:49,134 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-12-14 23:40:49,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-14 23:40:49,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:49,161 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:40:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:49,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:40:49,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:49,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 23:40:49,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:49,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:49,396 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 [2021-12-14 23:40:49,409 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) [2021-12-14 23:40:49,559 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. [2021-12-14 23:40:49,562 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 [2021-12-14 23:40:49,570 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) [2021-12-14 23:40:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-12-14 23:40:49,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-14 23:40:49,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:40:49,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-12-14 23:40:49,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:40:49,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-12-14 23:40:49,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:40:49,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-12-14 23:40:49,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-14 23:40:49,591 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-12-14 23:40:49,591 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-14 23:40:49,592 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-12-14 23:40:49,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-12-14 23:40:49,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:40:49,594 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-12-14 23:40:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-12-14 23:40:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-12-14 23:40:49,615 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) [2021-12-14 23:40:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-12-14 23:40:49,617 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-12-14 23:40:49,617 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-12-14 23:40:49,617 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:40:49,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-12-14 23:40:49,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-14 23:40:49,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:49,619 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:49,620 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:49,620 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:49,620 INFO L791 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 := 5; 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 [2021-12-14 23:40:49,621 INFO L793 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 [2021-12-14 23:40:49,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:49,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-12-14 23:40:49,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:49,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012021632] [2021-12-14 23:40:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:49,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 23:40:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 23:40:49,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:49,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012021632] [2021-12-14 23:40:49,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012021632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:49,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:49,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:40:49,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406197101] [2021-12-14 23:40:49,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:49,712 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:40:49,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:49,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-12-14 23:40:49,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:49,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414533338] [2021-12-14 23:40:49,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:49,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:49,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:40:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 23:40:49,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:49,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414533338] [2021-12-14 23:40:49,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414533338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:40:49,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:40:49,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 23:40:49,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851909400] [2021-12-14 23:40:49,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:40:49,751 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:40:49,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:49,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 23:40:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 23:40:49,756 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) [2021-12-14 23:40:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:49,806 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-12-14 23:40:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 23:40:49,808 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-12-14 23:40:49,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-14 23:40:49,814 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-12-14 23:40:49,815 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-12-14 23:40:49,815 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-12-14 23:40:49,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-12-14 23:40:49,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:40:49,816 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-12-14 23:40:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-12-14 23:40:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-12-14 23:40:49,820 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) [2021-12-14 23:40:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-12-14 23:40:49,821 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-12-14 23:40:49,821 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-12-14 23:40:49,822 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:40:49,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-12-14 23:40:49,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-14 23:40:49,823 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:49,823 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:49,824 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:49,824 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:49,824 INFO L791 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 := 5; 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 [2021-12-14 23:40:49,824 INFO L793 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 [2021-12-14 23:40:49,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:49,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-12-14 23:40:49,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:49,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406149286] [2021-12-14 23:40:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:49,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:49,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 23:40:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:49,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:49,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406149286] [2021-12-14 23:40:49,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406149286] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:40:49,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721372534] [2021-12-14 23:40:49,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:49,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:40:49,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:49,903 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:40:49,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-14 23:40:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:49,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 23:40:49,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:49,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:40:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:50,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721372534] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:40:50,155 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:40:50,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-12-14 23:40:50,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059396846] [2021-12-14 23:40:50,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:40:50,157 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:40:50,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:50,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-12-14 23:40:50,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:50,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668806598] [2021-12-14 23:40:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:50,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:50,168 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:50,173 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:50,377 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:40:50,377 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:40:50,378 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:40:50,378 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:40:50,378 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:40:50,378 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:50,378 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:40:50,378 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:40:50,378 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2021-12-14 23:40:50,378 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:40:50,379 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:40:50,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:50,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:50,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:50,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:50,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:50,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:50,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:50,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:50,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:50,440 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:40:50,441 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:40:50,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:50,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:50,442 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:50,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:50,452 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:50,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-14 23:40:50,473 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:50,473 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:50,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:50,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:50,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:50,489 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:50,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-14 23:40:50,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:50,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:50,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:50,501 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:50,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-14 23:40:50,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:50,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:50,516 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:50,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-14 23:40:50,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:50,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:50,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:50,563 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:50,578 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 [2021-12-14 23:40:50,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:50,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:50,580 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:50,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-14 23:40:50,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:50,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:50,589 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:50,589 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:50,603 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 [2021-12-14 23:40:50,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:50,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:50,605 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:50,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-14 23:40:50,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:50,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:50,613 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:50,613 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:50,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:50,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:50,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:50,629 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:50,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-14 23:40:50,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:50,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:50,654 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 [2021-12-14 23:40:50,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:50,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:50,656 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:50,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-14 23:40:50,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:40:50,658 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:51,505 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:40:51,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-14 23:40:51,509 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:40:51,509 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:40:51,509 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:40:51,509 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:40:51,509 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:40:51,509 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:51,509 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:40:51,509 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:40:51,509 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2021-12-14 23:40:51,509 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:40:51,509 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:40:51,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:51,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:51,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:51,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:51,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:51,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:51,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:51,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:51,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:51,578 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:40:51,578 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:40:51,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:51,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:51,580 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:51,587 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:51,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:51,595 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:51,595 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:51,595 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:51,595 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:51,596 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:51,596 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:51,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-14 23:40:51,611 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:51,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:51,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:51,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:51,636 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) [2021-12-14 23:40:51,637 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 [2021-12-14 23:40:51,639 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:51,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:51,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:51,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:51,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:51,646 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:51,646 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:51,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:51,663 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:51,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:51,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:51,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:51,693 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) [2021-12-14 23:40:51,694 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 [2021-12-14 23:40:51,699 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:51,706 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:51,706 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:51,706 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:51,706 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:51,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:51,707 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:51,707 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:51,715 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:51,734 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 [2021-12-14 23:40:51,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:51,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:51,735 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) [2021-12-14 23:40:51,736 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 [2021-12-14 23:40:51,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:51,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:51,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:51,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:51,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:51,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:51,746 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:51,746 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:51,751 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:51,765 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 [2021-12-14 23:40:51,765 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:51,766 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) [2021-12-14 23:40:51,767 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 [2021-12-14 23:40:51,768 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:51,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:51,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:51,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:51,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:51,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:51,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:51,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:51,780 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:40:51,782 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:40:51,782 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 23:40:51,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:51,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:51,784 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) [2021-12-14 23:40:51,785 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 [2021-12-14 23:40:51,787 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:40:51,787 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:40:51,787 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:40:51,787 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-12-14 23:40:51,804 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 [2021-12-14 23:40:51,804 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:40:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:51,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:51,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 23:40:51,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:51,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-14 23:40:51,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:52,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:40:52,096 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 [2021-12-14 23:40:52,097 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) [2021-12-14 23:40:52,417 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. [2021-12-14 23:40:52,417 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 [2021-12-14 23:40:52,418 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) [2021-12-14 23:40:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-12-14 23:40:52,419 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-12-14 23:40:52,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:40:52,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-12-14 23:40:52,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:40:52,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-12-14 23:40:52,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:40:52,421 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-12-14 23:40:52,426 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-14 23:40:52,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-12-14 23:40:52,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-12-14 23:40:52,431 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-12-14 23:40:52,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-12-14 23:40:52,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:40:52,433 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-12-14 23:40:52,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-12-14 23:40:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-12-14 23:40:52,444 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) [2021-12-14 23:40:52,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-12-14 23:40:52,446 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-12-14 23:40:52,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 23:40:52,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-14 23:40:52,447 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) [2021-12-14 23:40:52,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:52,609 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2021-12-14 23:40:52,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 23:40:52,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2021-12-14 23:40:52,614 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-14 23:40:52,617 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2021-12-14 23:40:52,618 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2021-12-14 23:40:52,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2021-12-14 23:40:52,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2021-12-14 23:40:52,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:40:52,618 INFO L681 BuchiCegarLoop]: Abstraction has 185 states and 246 transitions. [2021-12-14 23:40:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2021-12-14 23:40:52,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2021-12-14 23:40:52,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (56), 34 states have call predecessors, (56), 37 states have call successors, (56) [2021-12-14 23:40:52,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2021-12-14 23:40:52,631 INFO L704 BuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2021-12-14 23:40:52,631 INFO L587 BuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2021-12-14 23:40:52,631 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:40:52,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2021-12-14 23:40:52,633 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-14 23:40:52,634 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:52,634 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:52,637 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-14 23:40:52,637 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-12-14 23:40:52,638 INFO L791 eck$LassoCheckResult]: Stem: 1217#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); 1218#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 := 5; 1245#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1291#fibo1ENTRY ~n := #in~n; 1325#L10 assume !(~n < 1); 1324#L12 assume !(1 == ~n); 1223#L15 call #t~ret4 := fibo2(~n - 1);< 1277#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1222#L22 assume !(1 == ~n); 1224#L25 call #t~ret6 := fibo1(~n - 1);< 1249#fibo1ENTRY ~n := #in~n; 1316#L10 assume !(~n < 1); 1315#L12 assume !(1 == ~n); 1248#L15 call #t~ret4 := fibo2(~n - 1);< 1314#fibo2ENTRY ~n := #in~n; 1311#L20 assume !(~n < 1); 1312#L22 assume !(1 == ~n); 1246#L25 call #t~ret6 := fibo1(~n - 1);< 1249#fibo1ENTRY ~n := #in~n; 1316#L10 assume !(~n < 1); 1315#L12 assume !(1 == ~n); 1248#L15 call #t~ret4 := fibo2(~n - 1);< 1314#fibo2ENTRY ~n := #in~n; 1311#L20 assume ~n < 1;#res := 0; 1271#fibo2FINAL assume true; 1272#fibo2EXIT >#50#return; 1247#L15-1 call #t~ret5 := fibo2(~n - 2);< 1251#fibo2ENTRY ~n := #in~n; 1381#L20 assume !(~n < 1); 1380#L22 assume !(1 == ~n); 1246#L25 call #t~ret6 := fibo1(~n - 1);< 1249#fibo1ENTRY ~n := #in~n; 1317#L10 assume !(~n < 1); 1320#L12 assume 1 == ~n;#res := 1; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#46#return; 1227#L25-1 call #t~ret7 := fibo1(~n - 2);< 1237#fibo1ENTRY ~n := #in~n; 1310#L10 assume !(~n < 1); 1308#L12 assume !(1 == ~n); 1236#L15 call #t~ret4 := fibo2(~n - 1);< 1307#fibo2ENTRY ~n := #in~n; 1305#L20 assume ~n < 1;#res := 0; 1306#fibo2FINAL assume true; 1309#fibo2EXIT >#50#return; 1235#L15-1 call #t~ret5 := fibo2(~n - 2);< 1307#fibo2ENTRY ~n := #in~n; 1305#L20 assume !(~n < 1); 1300#L22 assume 1 == ~n;#res := 1; 1301#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#48#return; 1374#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1369#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#46#return; 1263#L25-1 call #t~ret7 := fibo1(~n - 2);< 1233#fibo1ENTRY ~n := #in~n; 1273#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#50#return; 1285#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#48#return; 1374#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1369#fibo2EXIT >#50#return; 1285#L15-1 [2021-12-14 23:40:52,638 INFO L793 eck$LassoCheckResult]: Loop: 1285#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume !(~n < 1); 1375#L22 assume !(1 == ~n); 1262#L25 call #t~ret6 := fibo1(~n - 1);< 1233#fibo1ENTRY ~n := #in~n; 1273#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume !(~n < 1); 1375#L22 assume !(1 == ~n); 1262#L25 call #t~ret6 := fibo1(~n - 1);< 1233#fibo1ENTRY ~n := #in~n; 1273#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#50#return; 1285#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#46#return; 1263#L25-1 call #t~ret7 := fibo1(~n - 2);< 1233#fibo1ENTRY ~n := #in~n; 1273#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#50#return; 1285#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#fibo2ENTRY ~n := #in~n; 1286#L20 assume ~n < 1;#res := 0; 1372#fibo2FINAL assume true; 1370#fibo2EXIT >#52#return; 1367#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1382#fibo1FINAL assume true; 1378#fibo1EXIT >#48#return; 1374#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1369#fibo2EXIT >#50#return; 1285#L15-1 [2021-12-14 23:40:52,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-12-14 23:40:52,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:52,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501831690] [2021-12-14 23:40:52,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:52,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 23:40:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:40:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:40:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:40:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 23:40:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:40:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-14 23:40:52,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:52,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501831690] [2021-12-14 23:40:52,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501831690] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:40:52,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232833119] [2021-12-14 23:40:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:52,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:40:52,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:52,945 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:40:52,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-14 23:40:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:52,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-14 23:40:52,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-14 23:40:53,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:40:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-14 23:40:53,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232833119] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:40:53,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:40:53,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 31 [2021-12-14 23:40:53,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508327079] [2021-12-14 23:40:53,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:40:53,738 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:40:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:53,739 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-12-14 23:40:53,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:53,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11659837] [2021-12-14 23:40:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:53,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:40:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:53,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:53,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:53,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:53,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:40:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:53,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 23:40:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:53,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:53,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:40:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-14 23:40:53,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:53,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11659837] [2021-12-14 23:40:53,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11659837] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:40:53,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068939041] [2021-12-14 23:40:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:53,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:40:53,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:53,825 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:40:53,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-14 23:40:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:53,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 23:40:53,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-14 23:40:53,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:40:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-14 23:40:54,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068939041] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:40:54,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:40:54,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2021-12-14 23:40:54,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260361730] [2021-12-14 23:40:54,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:40:54,286 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:40:54,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:54,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 23:40:54,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-14 23:40:54,287 INFO L87 Difference]: Start difference. First operand 172 states and 231 transitions. cyclomatic complexity: 64 Second operand has 15 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2021-12-14 23:40:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:54,476 INFO L93 Difference]: Finished difference Result 228 states and 299 transitions. [2021-12-14 23:40:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 23:40:54,477 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 299 transitions. [2021-12-14 23:40:54,480 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-14 23:40:54,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 205 states and 268 transitions. [2021-12-14 23:40:54,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2021-12-14 23:40:54,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2021-12-14 23:40:54,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 268 transitions. [2021-12-14 23:40:54,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:40:54,484 INFO L681 BuchiCegarLoop]: Abstraction has 205 states and 268 transitions. [2021-12-14 23:40:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 268 transitions. [2021-12-14 23:40:54,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2021-12-14 23:40:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 128 states have internal predecessors, (139), 40 states have call successors, (41), 25 states have call predecessors, (41), 31 states have return successors, (64), 35 states have call predecessors, (64), 37 states have call successors, (64) [2021-12-14 23:40:54,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2021-12-14 23:40:54,496 INFO L704 BuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2021-12-14 23:40:54,496 INFO L587 BuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2021-12-14 23:40:54,496 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 23:40:54,496 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 244 transitions. [2021-12-14 23:40:54,497 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-12-14 23:40:54,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:54,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:54,499 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:54,499 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-12-14 23:40:54,499 INFO L791 eck$LassoCheckResult]: Stem: 2735#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2736#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2765#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2797#fibo1ENTRY ~n := #in~n; 2786#L10 assume !(~n < 1); 2781#L12 assume !(1 == ~n); 2741#L15 call #t~ret4 := fibo2(~n - 1);< 2789#fibo2ENTRY ~n := #in~n; 2791#L20 assume !(~n < 1); 2740#L22 assume !(1 == ~n); 2742#L25 call #t~ret6 := fibo1(~n - 1);< 2810#fibo1ENTRY ~n := #in~n; 2808#L10 assume !(~n < 1); 2807#L12 assume !(1 == ~n); 2752#L15 call #t~ret4 := fibo2(~n - 1);< 2802#fibo2ENTRY ~n := #in~n; 2828#L20 assume !(~n < 1); 2827#L22 assume !(1 == ~n); 2772#L25 call #t~ret6 := fibo1(~n - 1);< 2810#fibo1ENTRY ~n := #in~n; 2811#L10 assume !(~n < 1); 2838#L12 assume 1 == ~n;#res := 1; 2839#fibo1FINAL assume true; 2908#fibo1EXIT >#46#return; 2751#L25-1 call #t~ret7 := fibo1(~n - 2);< 2754#fibo1ENTRY ~n := #in~n; 2914#L10 assume ~n < 1;#res := 0; 2912#fibo1FINAL assume true; 2910#fibo1EXIT >#48#return; 2774#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2775#fibo2FINAL assume true; 2782#fibo2EXIT >#50#return; 2851#L15-1 [2021-12-14 23:40:54,499 INFO L793 eck$LassoCheckResult]: Loop: 2851#L15-1 call #t~ret5 := fibo2(~n - 2);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume !(~n < 1); 2887#L22 assume !(1 == ~n); 2860#L25 call #t~ret6 := fibo1(~n - 1);< 2870#fibo1ENTRY ~n := #in~n; 2867#L10 assume !(~n < 1); 2865#L12 assume !(1 == ~n); 2854#L15 call #t~ret4 := fibo2(~n - 1);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume !(~n < 1); 2887#L22 assume !(1 == ~n); 2860#L25 call #t~ret6 := fibo1(~n - 1);< 2870#fibo1ENTRY ~n := #in~n; 2867#L10 assume !(~n < 1); 2865#L12 assume !(1 == ~n); 2854#L15 call #t~ret4 := fibo2(~n - 1);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume !(~n < 1); 2887#L22 assume 1 == ~n;#res := 1; 2888#fibo2FINAL assume true; 2863#fibo2EXIT >#50#return; 2851#L15-1 call #t~ret5 := fibo2(~n - 2);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume ~n < 1;#res := 0; 2890#fibo2FINAL assume true; 2886#fibo2EXIT >#52#return; 2852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2885#fibo1FINAL assume true; 2882#fibo1EXIT >#46#return; 2857#L25-1 call #t~ret7 := fibo1(~n - 2);< 2870#fibo1ENTRY ~n := #in~n; 2867#L10 assume !(~n < 1); 2865#L12 assume !(1 == ~n); 2854#L15 call #t~ret4 := fibo2(~n - 1);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume !(~n < 1); 2887#L22 assume 1 == ~n;#res := 1; 2888#fibo2FINAL assume true; 2863#fibo2EXIT >#50#return; 2851#L15-1 call #t~ret5 := fibo2(~n - 2);< 2861#fibo2ENTRY ~n := #in~n; 2889#L20 assume ~n < 1;#res := 0; 2890#fibo2FINAL assume true; 2886#fibo2EXIT >#52#return; 2852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2885#fibo1FINAL assume true; 2882#fibo1EXIT >#48#return; 2879#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2878#fibo2FINAL assume true; 2853#fibo2EXIT >#50#return; 2851#L15-1 [2021-12-14 23:40:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-12-14 23:40:54,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:54,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800036788] [2021-12-14 23:40:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:54,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:54,506 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:54,519 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:54,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:54,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-12-14 23:40:54,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:54,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878422077] [2021-12-14 23:40:54,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:54,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:54,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:40:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:54,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:54,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:40:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:54,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 23:40:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:40:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-14 23:40:54,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:54,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878422077] [2021-12-14 23:40:54,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878422077] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:40:54,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861426104] [2021-12-14 23:40:54,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:54,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:40:54,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:54,644 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:40:54,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-14 23:40:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:54,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 23:40:54,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:54,792 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 23:40:54,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:40:55,163 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 23:40:55,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861426104] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:40:55,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:40:55,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2021-12-14 23:40:55,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048476485] [2021-12-14 23:40:55,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:40:55,164 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:40:55,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:55,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-14 23:40:55,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-12-14 23:40:55,165 INFO L87 Difference]: Start difference. First operand 189 states and 244 transitions. cyclomatic complexity: 60 Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-14 23:40:55,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:55,392 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2021-12-14 23:40:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 23:40:55,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 162 transitions. [2021-12-14 23:40:55,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-14 23:40:55,396 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 106 states and 132 transitions. [2021-12-14 23:40:55,396 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2021-12-14 23:40:55,396 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2021-12-14 23:40:55,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2021-12-14 23:40:55,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:40:55,396 INFO L681 BuchiCegarLoop]: Abstraction has 106 states and 132 transitions. [2021-12-14 23:40:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2021-12-14 23:40:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2021-12-14 23:40:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 69 states have internal predecessors, (75), 20 states have call successors, (20), 15 states have call predecessors, (20), 16 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2021-12-14 23:40:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2021-12-14 23:40:55,402 INFO L704 BuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2021-12-14 23:40:55,402 INFO L587 BuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2021-12-14 23:40:55,402 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-14 23:40:55,402 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 128 transitions. [2021-12-14 23:40:55,403 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-14 23:40:55,403 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:55,403 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:55,404 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:55,404 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:55,404 INFO L791 eck$LassoCheckResult]: Stem: 3489#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); 3490#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 := 5; 3512#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3539#fibo1ENTRY ~n := #in~n; 3527#L10 assume !(~n < 1); 3528#L12 assume !(1 == ~n); 3513#L15 call #t~ret4 := fibo2(~n - 1);< 3573#fibo2ENTRY ~n := #in~n; 3534#L20 assume !(~n < 1); 3535#L22 assume !(1 == ~n); 3498#L25 call #t~ret6 := fibo1(~n - 1);< 3508#fibo1ENTRY ~n := #in~n; 3509#L10 assume !(~n < 1); 3522#L12 assume !(1 == ~n); 3495#L15 call #t~ret4 := fibo2(~n - 1);< 3530#fibo2ENTRY ~n := #in~n; 3538#L20 assume !(~n < 1); 3494#L22 assume !(1 == ~n); 3496#L25 call #t~ret6 := fibo1(~n - 1);< 3508#fibo1ENTRY ~n := #in~n; 3510#L10 assume !(~n < 1); 3542#L12 assume 1 == ~n;#res := 1; 3497#fibo1FINAL assume true; 3499#fibo1EXIT >#46#return; 3511#L25-1 call #t~ret7 := fibo1(~n - 2);< 3582#fibo1ENTRY ~n := #in~n; 3585#L10 assume ~n < 1;#res := 0; 3584#fibo1FINAL assume true; 3580#fibo1EXIT >#48#return; 3577#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3576#fibo2FINAL assume true; 3574#fibo2EXIT >#50#return; 3517#L15-1 [2021-12-14 23:40:55,404 INFO L793 eck$LassoCheckResult]: Loop: 3517#L15-1 call #t~ret5 := fibo2(~n - 2);< 3548#fibo2ENTRY ~n := #in~n; 3571#L20 assume !(~n < 1); 3543#L22 assume !(1 == ~n); 3504#L25 call #t~ret6 := fibo1(~n - 1);< 3502#fibo1ENTRY ~n := #in~n; 3507#L10 assume !(~n < 1); 3545#L12 assume !(1 == ~n); 3516#L15 call #t~ret4 := fibo2(~n - 1);< 3529#fibo2ENTRY ~n := #in~n; 3537#L20 assume !(~n < 1); 3543#L22 assume !(1 == ~n); 3504#L25 call #t~ret6 := fibo1(~n - 1);< 3502#fibo1ENTRY ~n := #in~n; 3507#L10 assume !(~n < 1); 3545#L12 assume 1 == ~n;#res := 1; 3521#fibo1FINAL assume true; 3589#fibo1EXIT >#46#return; 3525#L25-1 call #t~ret7 := fibo1(~n - 2);< 3551#fibo1ENTRY ~n := #in~n; 3524#L10 assume ~n < 1;#res := 0; 3526#fibo1FINAL assume true; 3583#fibo1EXIT >#48#return; 3515#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3518#fibo2FINAL assume true; 3523#fibo2EXIT >#50#return; 3517#L15-1 [2021-12-14 23:40:55,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:55,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2021-12-14 23:40:55,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:55,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422021389] [2021-12-14 23:40:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:55,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:55,410 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:55,417 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:55,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:55,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2021-12-14 23:40:55,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:55,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121805518] [2021-12-14 23:40:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:55,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:55,421 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:40:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:40:55,424 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:40:55,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:55,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2021-12-14 23:40:55,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:55,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38290927] [2021-12-14 23:40:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:55,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 23:40:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:55,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:40:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:55,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 23:40:55,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:55,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:40:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-14 23:40:55,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:55,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38290927] [2021-12-14 23:40:55,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38290927] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:40:55,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337330950] [2021-12-14 23:40:55,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:55,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:40:55,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:55,527 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:40:55,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-14 23:40:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:55,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 23:40:55,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-14 23:40:55,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:40:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-14 23:40:55,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337330950] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:40:55,780 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:40:55,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2021-12-14 23:40:55,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039881083] [2021-12-14 23:40:55,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:40:56,126 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:40:56,126 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:40:56,126 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:40:56,126 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:40:56,126 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:40:56,126 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:56,127 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:40:56,127 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:40:56,127 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2021-12-14 23:40:56,127 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:40:56,127 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:40:56,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:56,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:56,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:56,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:56,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:56,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:56,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:56,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:56,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:56,227 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:40:56,227 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:40:56,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:56,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:56,231 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) [2021-12-14 23:40:56,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:56,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:56,250 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 [2021-12-14 23:40:56,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:56,260 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:56,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-14 23:40:56,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:56,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:56,279 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) [2021-12-14 23:40:56,283 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 [2021-12-14 23:40:56,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:56,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:56,293 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:56,294 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:56,310 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 [2021-12-14 23:40:56,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:56,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:56,312 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) [2021-12-14 23:40:56,313 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 [2021-12-14 23:40:56,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:56,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:56,370 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:40:56,371 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:40:56,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:56,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:56,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:56,387 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) [2021-12-14 23:40:56,387 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 [2021-12-14 23:40:56,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:40:56,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:56,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:56,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:56,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:56,440 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) [2021-12-14 23:40:56,441 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 [2021-12-14 23:40:56,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:40:56,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:40:57,485 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:40:57,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:57,492 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:40:57,492 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:40:57,492 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:40:57,492 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:40:57,492 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:40:57,492 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:57,492 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:40:57,492 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:40:57,492 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2021-12-14 23:40:57,492 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:40:57,492 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:40:57,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:57,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:57,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:57,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:57,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:57,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:57,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:57,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:57,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:40:57,589 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:40:57,589 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:40:57,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:57,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:57,590 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) [2021-12-14 23:40:57,600 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:57,603 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 [2021-12-14 23:40:57,606 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:57,606 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:57,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:57,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:57,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:57,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:57,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:57,631 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:57,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-12-14 23:40:57,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:57,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:57,660 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) [2021-12-14 23:40:57,661 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 [2021-12-14 23:40:57,663 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:57,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:57,668 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:57,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:57,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:57,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:57,669 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:57,669 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:57,685 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:40:57,701 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 [2021-12-14 23:40:57,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:57,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:57,702 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) [2021-12-14 23:40:57,703 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 [2021-12-14 23:40:57,705 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:40:57,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:40:57,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:40:57,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:40:57,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:40:57,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:40:57,711 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:40:57,711 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:40:57,735 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:40:57,747 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 23:40:57,748 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:40:57,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:40:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:57,755 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:40:57,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-14 23:40:57,756 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:40:57,756 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:40:57,756 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:40:57,756 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-12-14 23:40:57,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-12-14 23:40:57,770 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:40:57,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:57,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-14 23:40:57,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:58,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-14 23:40:58,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-14 23:40:58,580 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 [2021-12-14 23:40:58,580 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27 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) [2021-12-14 23:40:58,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-12-14 23:40:58,925 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27. 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 335 states and 442 transitions. Complement of second has 46 states. [2021-12-14 23:40:58,927 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 [2021-12-14 23:40:58,928 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) [2021-12-14 23:40:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2021-12-14 23:40:58,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2021-12-14 23:40:58,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:40:58,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2021-12-14 23:40:58,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:40:58,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2021-12-14 23:40:58,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:40:58,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 442 transitions. [2021-12-14 23:40:58,935 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2021-12-14 23:40:58,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 292 states and 395 transitions. [2021-12-14 23:40:58,939 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2021-12-14 23:40:58,939 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2021-12-14 23:40:58,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 395 transitions. [2021-12-14 23:40:58,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:40:58,940 INFO L681 BuchiCegarLoop]: Abstraction has 292 states and 395 transitions. [2021-12-14 23:40:58,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 395 transitions. [2021-12-14 23:40:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2021-12-14 23:40:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 166 states have (on average 1.1506024096385543) internal successors, (191), 173 states have internal predecessors, (191), 55 states have call successors, (56), 36 states have call predecessors, (56), 45 states have return successors, (110), 56 states have call predecessors, (110), 52 states have call successors, (110) [2021-12-14 23:40:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2021-12-14 23:40:58,951 INFO L704 BuchiCegarLoop]: Abstraction has 266 states and 357 transitions. [2021-12-14 23:40:58,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:40:58,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 23:40:58,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-14 23:40:58,952 INFO L87 Difference]: Start difference. First operand 266 states and 357 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-14 23:40:59,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:40:59,134 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2021-12-14 23:40:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 23:40:59,135 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2021-12-14 23:40:59,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-14 23:40:59,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2021-12-14 23:40:59,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2021-12-14 23:40:59,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-12-14 23:40:59,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2021-12-14 23:40:59,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:40:59,138 INFO L681 BuchiCegarLoop]: Abstraction has 122 states and 145 transitions. [2021-12-14 23:40:59,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2021-12-14 23:40:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2021-12-14 23:40:59,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 80 states have internal predecessors, (86), 21 states have call successors, (21), 16 states have call predecessors, (21), 20 states have return successors, (34), 21 states have call predecessors, (34), 18 states have call successors, (34) [2021-12-14 23:40:59,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2021-12-14 23:40:59,142 INFO L704 BuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-12-14 23:40:59,142 INFO L587 BuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-12-14 23:40:59,142 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-14 23:40:59,142 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 141 transitions. [2021-12-14 23:40:59,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-14 23:40:59,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:40:59,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:40:59,145 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:59,145 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:40:59,146 INFO L791 eck$LassoCheckResult]: Stem: 5005#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); 5006#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 := 5; 5027#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5053#fibo1ENTRY ~n := #in~n; 5054#L10 assume !(~n < 1); 5070#L12 assume !(1 == ~n); 5011#L15 call #t~ret4 := fibo2(~n - 1);< 5050#fibo2ENTRY ~n := #in~n; 5047#L20 assume !(~n < 1); 5010#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5021#fibo1ENTRY ~n := #in~n; 5023#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5017#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5108#L20 assume !(~n < 1); 5107#L22 assume !(1 == ~n); 5022#L25 call #t~ret6 := fibo1(~n - 1);< 5021#fibo1ENTRY ~n := #in~n; 5023#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5017#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5108#L20 assume !(~n < 1); 5107#L22 assume !(1 == ~n); 5022#L25 call #t~ret6 := fibo1(~n - 1);< 5021#fibo1ENTRY ~n := #in~n; 5024#L10 assume !(~n < 1); 5062#L12 assume 1 == ~n;#res := 1; 5068#fibo1FINAL assume true; 5110#fibo1EXIT >#46#return; 5016#L25-1 call #t~ret7 := fibo1(~n - 2);< 5018#fibo1ENTRY ~n := #in~n; 5118#L10 assume ~n < 1;#res := 0; 5116#fibo1FINAL assume true; 5025#fibo1EXIT >#48#return; 5026#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5115#fibo2FINAL assume true; 5048#fibo2EXIT >#50#return; 5008#L15-1 call #t~ret5 := fibo2(~n - 2);< 5031#fibo2ENTRY ~n := #in~n; 5117#L20 assume ~n < 1;#res := 0; 5009#fibo2FINAL assume true; 5037#fibo2EXIT >#52#return; 5080#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5078#fibo1FINAL assume true; 5075#fibo1EXIT >#46#return; 5057#L25-1 [2021-12-14 23:40:59,146 INFO L793 eck$LassoCheckResult]: Loop: 5057#L25-1 call #t~ret7 := fibo1(~n - 2);< 5030#fibo1ENTRY ~n := #in~n; 5065#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5033#L15 call #t~ret4 := fibo2(~n - 1);< 5066#fibo2ENTRY ~n := #in~n; 5063#L20 assume !(~n < 1); 5064#L22 assume !(1 == ~n); 5059#L25 call #t~ret6 := fibo1(~n - 1);< 5030#fibo1ENTRY ~n := #in~n; 5065#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5033#L15 call #t~ret4 := fibo2(~n - 1);< 5066#fibo2ENTRY ~n := #in~n; 5063#L20 assume !(~n < 1); 5064#L22 assume !(1 == ~n); 5059#L25 call #t~ret6 := fibo1(~n - 1);< 5030#fibo1ENTRY ~n := #in~n; 5065#L10 assume !(~n < 1); 5055#L12 assume 1 == ~n;#res := 1; 5060#fibo1FINAL assume true; 5104#fibo1EXIT >#46#return; 5039#L25-1 call #t~ret7 := fibo1(~n - 2);< 5119#fibo1ENTRY ~n := #in~n; 5038#L10 assume ~n < 1;#res := 0; 5040#fibo1FINAL assume true; 5120#fibo1EXIT >#48#return; 5102#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5100#fibo2FINAL assume true; 5092#fibo2EXIT >#50#return; 5086#L15-1 call #t~ret5 := fibo2(~n - 2);< 5091#fibo2ENTRY ~n := #in~n; 5106#L20 assume ~n < 1;#res := 0; 5095#fibo2FINAL assume true; 5084#fibo2EXIT >#52#return; 5087#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5083#fibo1FINAL assume true; 5076#fibo1EXIT >#46#return; 5057#L25-1 [2021-12-14 23:40:59,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:59,146 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2021-12-14 23:40:59,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:59,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250842552] [2021-12-14 23:40:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:59,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 23:40:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:40:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 23:40:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-14 23:40:59,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:59,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250842552] [2021-12-14 23:40:59,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250842552] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:40:59,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16163451] [2021-12-14 23:40:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:59,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:40:59,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:59,336 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) [2021-12-14 23:40:59,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-12-14 23:40:59,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-14 23:40:59,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:59,488 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 23:40:59,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:40:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 23:40:59,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16163451] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:40:59,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:40:59,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2021-12-14 23:40:59,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186034975] [2021-12-14 23:40:59,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:40:59,715 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:40:59,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:40:59,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2021-12-14 23:40:59,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:40:59,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651328946] [2021-12-14 23:40:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:59,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:40:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:40:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:40:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:40:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 23:40:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 23:40:59,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:40:59,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651328946] [2021-12-14 23:40:59,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651328946] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:40:59,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905853708] [2021-12-14 23:40:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:40:59,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:40:59,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:40:59,806 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) [2021-12-14 23:40:59,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-12-14 23:40:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:40:59,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 23:40:59,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:40:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-14 23:40:59,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:41:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-14 23:41:00,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905853708] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:41:00,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:41:00,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2021-12-14 23:41:00,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37589894] [2021-12-14 23:41:00,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:41:00,171 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:41:00,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:41:00,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 23:41:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-12-14 23:41:00,172 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. cyclomatic complexity: 25 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) [2021-12-14 23:41:00,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:41:00,300 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2021-12-14 23:41:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 23:41:00,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2021-12-14 23:41:00,302 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-14 23:41:00,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2021-12-14 23:41:00,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2021-12-14 23:41:00,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2021-12-14 23:41:00,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2021-12-14 23:41:00,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:41:00,304 INFO L681 BuchiCegarLoop]: Abstraction has 122 states and 143 transitions. [2021-12-14 23:41:00,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2021-12-14 23:41:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-12-14 23:41:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 81 states have internal predecessors, (87), 21 states have call successors, (21), 17 states have call predecessors, (21), 20 states have return successors, (33), 21 states have call predecessors, (33), 18 states have call successors, (33) [2021-12-14 23:41:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2021-12-14 23:41:00,308 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-14 23:41:00,308 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-12-14 23:41:00,308 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-14 23:41:00,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 141 transitions. [2021-12-14 23:41:00,309 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-12-14 23:41:00,309 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:41:00,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:41:00,311 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:41:00,311 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-12-14 23:41:00,311 INFO L791 eck$LassoCheckResult]: Stem: 5915#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); 5916#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 := 5; 5944#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5962#fibo1ENTRY ~n := #in~n; 5964#L10 assume !(~n < 1); 5976#L12 assume !(1 == ~n); 5921#L15 call #t~ret4 := fibo2(~n - 1);< 5974#fibo2ENTRY ~n := #in~n; 5959#L20 assume !(~n < 1); 5920#L22 assume !(1 == ~n); 5922#L25 call #t~ret6 := fibo1(~n - 1);< 5932#fibo1ENTRY ~n := #in~n; 5935#L10 assume !(~n < 1); 5952#L12 assume !(1 == ~n); 5948#L15 call #t~ret4 := fibo2(~n - 1);< 5957#fibo2ENTRY ~n := #in~n; 5961#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5933#L25 call #t~ret6 := fibo1(~n - 1);< 5932#fibo1ENTRY ~n := #in~n; 5935#L10 assume !(~n < 1); 5952#L12 assume !(1 == ~n); 5948#L15 call #t~ret4 := fibo2(~n - 1);< 5957#fibo2ENTRY ~n := #in~n; 5961#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5933#L25 call #t~ret6 := fibo1(~n - 1);< 5932#fibo1ENTRY ~n := #in~n; 5934#L10 assume !(~n < 1); 5968#L12 assume 1 == ~n;#res := 1; 5972#fibo1FINAL assume true; 6011#fibo1EXIT >#46#return; 6008#L25-1 call #t~ret7 := fibo1(~n - 2);< 6009#fibo1ENTRY ~n := #in~n; 6015#L10 assume ~n < 1;#res := 0; 6014#fibo1FINAL assume true; 6007#fibo1EXIT >#48#return; 6006#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6005#fibo2FINAL assume true; 6001#fibo2EXIT >#50#return; 5999#L15-1 call #t~ret5 := fibo2(~n - 2);< 6000#fibo2ENTRY ~n := #in~n; 6018#L20 assume !(~n < 1); 6017#L22 assume 1 == ~n;#res := 1; 6016#fibo2FINAL assume true; 5998#fibo2EXIT >#52#return; 5983#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5982#fibo1FINAL assume true; 5980#fibo1EXIT >#46#return; 5939#L25-1 [2021-12-14 23:41:00,311 INFO L793 eck$LassoCheckResult]: Loop: 5939#L25-1 call #t~ret7 := fibo1(~n - 2);< 5925#fibo1ENTRY ~n := #in~n; 6030#L10 assume !(~n < 1); 5965#L12 assume !(1 == ~n); 5949#L15 call #t~ret4 := fibo2(~n - 1);< 5971#fibo2ENTRY ~n := #in~n; 5997#L20 assume !(~n < 1); 5995#L22 assume !(1 == ~n); 5941#L25 call #t~ret6 := fibo1(~n - 1);< 5947#fibo1ENTRY ~n := #in~n; 5975#L10 assume !(~n < 1); 5965#L12 assume !(1 == ~n); 5949#L15 call #t~ret4 := fibo2(~n - 1);< 5971#fibo2ENTRY ~n := #in~n; 5997#L20 assume !(~n < 1); 5995#L22 assume !(1 == ~n); 5941#L25 call #t~ret6 := fibo1(~n - 1);< 5947#fibo1ENTRY ~n := #in~n; 5975#L10 assume !(~n < 1); 5965#L12 assume !(1 == ~n); 5949#L15 call #t~ret4 := fibo2(~n - 1);< 5971#fibo2ENTRY ~n := #in~n; 5997#L20 assume !(~n < 1); 5995#L22 assume 1 == ~n;#res := 1; 5993#fibo2FINAL assume true; 5992#fibo2EXIT >#50#return; 5989#L15-1 call #t~ret5 := fibo2(~n - 2);< 5991#fibo2ENTRY ~n := #in~n; 5996#L20 assume ~n < 1;#res := 0; 5994#fibo2FINAL assume true; 5988#fibo2EXIT >#52#return; 5987#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5986#fibo1FINAL assume true; 5979#fibo1EXIT >#46#return; 5940#L25-1 call #t~ret7 := fibo1(~n - 2);< 6031#fibo1ENTRY ~n := #in~n; 6033#L10 assume ~n < 1;#res := 0; 5955#fibo1FINAL assume true; 6032#fibo1EXIT >#48#return; 5943#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5950#fibo2FINAL assume true; 6021#fibo2EXIT >#50#return; 5990#L15-1 call #t~ret5 := fibo2(~n - 2);< 6004#fibo2ENTRY ~n := #in~n; 6013#L20 assume !(~n < 1); 6012#L22 assume 1 == ~n;#res := 1; 6010#fibo2FINAL assume true; 6003#fibo2EXIT >#52#return; 6002#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5984#fibo1FINAL assume true; 5981#fibo1EXIT >#46#return; 5939#L25-1 [2021-12-14 23:41:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:41:00,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2021-12-14 23:41:00,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:41:00,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679907557] [2021-12-14 23:41:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:41:00,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:41:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 23:41:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:41:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:41:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:41:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 23:41:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-14 23:41:00,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:41:00,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679907557] [2021-12-14 23:41:00,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679907557] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:41:00,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109825842] [2021-12-14 23:41:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:41:00,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:41:00,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:00,456 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) [2021-12-14 23:41:00,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-12-14 23:41:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-14 23:41:00,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:41:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 23:41:00,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:41:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 23:41:00,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109825842] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:41:00,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:41:00,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2021-12-14 23:41:00,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616898770] [2021-12-14 23:41:00,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:41:00,861 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:41:00,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:41:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2021-12-14 23:41:00,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:41:00,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653636714] [2021-12-14 23:41:00,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:41:00,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:41:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 23:41:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:41:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:41:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:41:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:41:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 23:41:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 23:41:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:00,965 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-14 23:41:00,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:41:00,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653636714] [2021-12-14 23:41:00,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653636714] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:41:00,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613858488] [2021-12-14 23:41:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:41:00,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:41:00,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:00,967 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) [2021-12-14 23:41:00,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-12-14 23:41:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:01,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 23:41:01,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:41:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-14 23:41:01,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:41:01,405 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-14 23:41:01,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613858488] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:41:01,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:41:01,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2021-12-14 23:41:01,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851161817] [2021-12-14 23:41:01,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:41:01,406 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:41:01,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:41:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-14 23:41:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-12-14 23:41:01,407 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. cyclomatic complexity: 23 Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2021-12-14 23:41:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:41:01,683 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-12-14 23:41:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 23:41:01,684 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 109 transitions. [2021-12-14 23:41:01,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-14 23:41:01,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 89 states and 95 transitions. [2021-12-14 23:41:01,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-12-14 23:41:01,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-12-14 23:41:01,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2021-12-14 23:41:01,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:41:01,687 INFO L681 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-14 23:41:01,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2021-12-14 23:41:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-14 23:41:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 61 states have internal predecessors, (64), 16 states have call successors, (16), 13 states have call predecessors, (16), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2021-12-14 23:41:01,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-12-14 23:41:01,689 INFO L704 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-14 23:41:01,689 INFO L587 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-14 23:41:01,689 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-14 23:41:01,689 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2021-12-14 23:41:01,690 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-14 23:41:01,690 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:41:01,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:41:01,690 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:41:01,690 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:41:01,691 INFO L791 eck$LassoCheckResult]: Stem: 6955#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); 6956#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 := 5; 6977#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6999#fibo1ENTRY ~n := #in~n; 7002#L10 assume !(~n < 1); 7041#L12 assume !(1 == ~n); 6961#L15 call #t~ret4 := fibo2(~n - 1);< 6989#fibo2ENTRY ~n := #in~n; 6993#L20 assume !(~n < 1); 6960#L22 assume !(1 == ~n); 6962#L25 call #t~ret6 := fibo1(~n - 1);< 6973#fibo1ENTRY ~n := #in~n; 6976#L10 assume !(~n < 1); 6985#L12 assume !(1 == ~n); 6979#L15 call #t~ret4 := fibo2(~n - 1);< 7018#fibo2ENTRY ~n := #in~n; 7021#L20 assume !(~n < 1); 7020#L22 assume !(1 == ~n); 6974#L25 call #t~ret6 := fibo1(~n - 1);< 6973#fibo1ENTRY ~n := #in~n; 6975#L10 assume !(~n < 1); 6983#L12 assume 1 == ~n;#res := 1; 6984#fibo1FINAL assume true; 7034#fibo1EXIT >#46#return; 7031#L25-1 call #t~ret7 := fibo1(~n - 2);< 7032#fibo1ENTRY ~n := #in~n; 7036#L10 assume ~n < 1;#res := 0; 7035#fibo1FINAL assume true; 7030#fibo1EXIT >#48#return; 7028#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7026#fibo2FINAL assume true; 7017#fibo2EXIT >#50#return; 6991#L15-1 call #t~ret5 := fibo2(~n - 2);< 7015#fibo2ENTRY ~n := #in~n; 6990#L20 assume !(~n < 1); 6992#L22 assume 1 == ~n;#res := 1; 7038#fibo2FINAL assume true; 7014#fibo2EXIT >#52#return; 7013#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7011#fibo1FINAL assume true; 7010#fibo1EXIT >#46#return; 6964#L25-1 call #t~ret7 := fibo1(~n - 2);< 7005#fibo1ENTRY ~n := #in~n; 7043#L10 assume !(~n < 1); 7000#L12 [2021-12-14 23:41:01,691 INFO L793 eck$LassoCheckResult]: Loop: 7000#L12 assume !(1 == ~n); 6970#L15 call #t~ret4 := fibo2(~n - 1);< 6988#fibo2ENTRY ~n := #in~n; 7006#L20 assume !(~n < 1); 7007#L22 assume !(1 == ~n); 6967#L25 call #t~ret6 := fibo1(~n - 1);< 6978#fibo1ENTRY ~n := #in~n; 7001#L10 assume !(~n < 1); 7000#L12 [2021-12-14 23:41:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:41:01,691 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2021-12-14 23:41:01,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:41:01,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110311418] [2021-12-14 23:41:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:41:01,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:41:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:41:01,698 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:41:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:41:01,704 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:41:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:41:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2021-12-14 23:41:01,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:41:01,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627769310] [2021-12-14 23:41:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:41:01,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:41:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:41:01,721 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:41:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:41:01,724 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:41:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:41:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2021-12-14 23:41:01,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:41:01,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399913058] [2021-12-14 23:41:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:41:01,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:41:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:01,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 23:41:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:41:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 23:41:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:01,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 23:41:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:01,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 23:41:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 23:41:01,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:41:01,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399913058] [2021-12-14 23:41:01,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399913058] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:41:01,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187196916] [2021-12-14 23:41:01,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 23:41:01,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:41:01,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:01,835 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:41:01,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-12-14 23:41:01,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-14 23:41:01,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 23:41:01,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 23:41:01,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:41:01,968 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 23:41:01,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:41:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 23:41:02,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187196916] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:41:02,096 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:41:02,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2021-12-14 23:41:02,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949001077] [2021-12-14 23:41:02,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:41:02,209 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:41:02,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:41:02,209 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:41:02,209 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:41:02,210 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:41:02,210 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:02,210 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:41:02,210 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:41:02,210 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2021-12-14 23:41:02,210 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:41:02,210 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:41:02,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:02,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:02,214 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:02,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:02,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:02,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:02,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:02,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:02,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:02,275 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:41:02,276 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:41:02,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:02,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:02,278 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) [2021-12-14 23:41:02,279 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 [2021-12-14 23:41:02,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:41:02,280 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:41:02,301 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:41:02,301 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:41:02,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-12-14 23:41:02,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:02,318 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) [2021-12-14 23:41:02,319 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 [2021-12-14 23:41:02,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:41:02,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:41:02,327 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:41:02,327 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:41:02,341 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 [2021-12-14 23:41:02,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:02,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:02,342 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) [2021-12-14 23:41:02,343 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 [2021-12-14 23:41:02,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:41:02,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:41:02,350 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:41:02,350 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:41:02,365 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 [2021-12-14 23:41:02,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:02,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:02,366 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) [2021-12-14 23:41:02,366 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 [2021-12-14 23:41:02,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:41:02,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:41:02,374 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:41:02,374 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:41:02,388 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 [2021-12-14 23:41:02,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:02,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:02,389 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) [2021-12-14 23:41:02,390 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 [2021-12-14 23:41:02,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:41:02,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:41:02,416 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 [2021-12-14 23:41:02,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:02,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:02,417 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) [2021-12-14 23:41:02,418 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 [2021-12-14 23:41:02,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:41:02,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:41:03,113 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:41:03,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-12-14 23:41:03,118 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:41:03,118 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:41:03,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:41:03,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:41:03,118 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:41:03,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,118 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:41:03,118 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:41:03,118 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2021-12-14 23:41:03,118 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:41:03,118 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:41:03,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:03,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:03,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:03,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:03,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:03,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:03,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:03,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:03,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:41:03,176 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:41:03,176 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:41:03,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,180 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) [2021-12-14 23:41:03,188 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:41:03,191 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 [2021-12-14 23:41:03,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:41:03,195 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:41:03,195 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:41:03,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:41:03,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:41:03,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:41:03,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:41:03,196 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:41:03,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-12-14 23:41:03,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,214 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) [2021-12-14 23:41:03,215 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 [2021-12-14 23:41:03,217 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:41:03,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:41:03,223 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:41:03,223 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:41:03,223 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:41:03,223 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:41:03,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:41:03,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:41:03,224 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:41:03,239 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 [2021-12-14 23:41:03,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,241 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) [2021-12-14 23:41:03,241 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 [2021-12-14 23:41:03,242 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:41:03,248 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:41:03,249 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:41:03,249 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:41:03,249 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:41:03,249 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:41:03,249 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:41:03,249 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:41:03,250 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:41:03,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-12-14 23:41:03,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,266 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:41:03,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-12-14 23:41:03,281 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:41:03,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:41:03,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:41:03,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:41:03,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:41:03,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:41:03,288 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:41:03,288 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:41:03,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:41:03,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-12-14 23:41:03,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,305 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) [2021-12-14 23:41:03,306 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 [2021-12-14 23:41:03,307 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:41:03,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:41:03,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:41:03,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:41:03,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:41:03,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:41:03,314 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:41:03,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:41:03,315 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:41:03,330 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 [2021-12-14 23:41:03,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,331 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) [2021-12-14 23:41:03,343 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 [2021-12-14 23:41:03,344 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:41:03,350 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:41:03,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:41:03,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:41:03,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:41:03,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:41:03,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:41:03,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:41:03,371 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:41:03,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-12-14 23:41:03,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,387 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) [2021-12-14 23:41:03,388 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 [2021-12-14 23:41:03,389 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:41:03,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:41:03,395 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:41:03,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:41:03,396 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:41:03,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:41:03,396 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:41:03,396 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:41:03,397 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:41:03,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-12-14 23:41:03,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,413 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) [2021-12-14 23:41:03,413 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 [2021-12-14 23:41:03,416 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:41:03,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:41:03,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:41:03,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:41:03,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:41:03,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:41:03,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:41:03,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:41:03,424 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:41:03,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2021-12-14 23:41:03,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,440 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) [2021-12-14 23:41:03,442 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 [2021-12-14 23:41:03,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:41:03,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:41:03,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:41:03,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:41:03,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:41:03,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:41:03,450 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:41:03,450 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:41:03,487 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:41:03,490 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:41:03,490 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 23:41:03,491 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:41:03,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:41:03,493 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:41:03,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-12-14 23:41:03,495 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:41:03,495 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:41:03,495 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:41:03,495 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-12-14 23:41:03,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-12-14 23:41:03,516 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:41:03,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:41:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:03,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 23:41:03,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:41:03,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-12-14 23:41:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:04,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 23:41:04,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:41:04,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:41:04,145 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 [2021-12-14 23:41:04,145 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 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, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 23:41:04,220 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. 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, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2021-12-14 23:41:04,221 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 [2021-12-14 23:41:04,221 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, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 23:41:04,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-12-14 23:41:04,221 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-14 23:41:04,221 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:41:04,222 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:41:04,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:41:04,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:04,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 23:41:04,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:41:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:04,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 23:41:04,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:41:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:41:04,675 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 [2021-12-14 23:41:04,676 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 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, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 23:41:04,740 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. 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, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2021-12-14 23:41:04,740 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 [2021-12-14 23:41:04,741 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, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 23:41:04,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-12-14 23:41:04,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-14 23:41:04,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:41:04,742 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:41:04,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:41:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:04,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 23:41:04,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:41:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:41:05,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 23:41:05,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:41:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:41:05,229 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 [2021-12-14 23:41:05,229 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 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, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 23:41:05,332 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. 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, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 135 states and 146 transitions. Complement of second has 23 states. [2021-12-14 23:41:05,333 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 [2021-12-14 23:41:05,334 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, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 23:41:05,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2021-12-14 23:41:05,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-14 23:41:05,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:41:05,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2021-12-14 23:41:05,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:41:05,336 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2021-12-14 23:41:05,336 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:41:05,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2021-12-14 23:41:05,338 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:41:05,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2021-12-14 23:41:05,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 23:41:05,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 23:41:05,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 23:41:05,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:41:05,339 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:41:05,339 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:41:05,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:41:05,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 23:41:05,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-14 23:41:05,340 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 23:41:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:41:05,340 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-14 23:41:05,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 23:41:05,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-14 23:41:05,340 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:41:05,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 23:41:05,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 23:41:05,341 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 23:41:05,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 23:41:05,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:41:05,341 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:41:05,341 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:41:05,341 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:41:05,341 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-14 23:41:05,341 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 23:41:05,342 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:41:05,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 23:41:05,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:41:05 BoogieIcfgContainer [2021-12-14 23:41:05,347 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:41:05,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:41:05,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:41:05,348 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:41:05,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:40:47" (3/4) ... [2021-12-14 23:41:05,350 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 23:41:05,350 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:41:05,351 INFO L158 Benchmark]: Toolchain (without parser) took 18333.75ms. Allocated memory was 90.2MB in the beginning and 163.6MB in the end (delta: 73.4MB). Free memory was 57.8MB in the beginning and 52.1MB in the end (delta: 5.7MB). Peak memory consumption was 77.8MB. Max. memory is 16.1GB. [2021-12-14 23:41:05,351 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 62.8MB in the beginning and 62.7MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:41:05,351 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.84ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 68.1MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 23:41:05,352 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.85ms. Allocated memory is still 90.2MB. Free memory was 68.1MB in the beginning and 66.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:41:05,352 INFO L158 Benchmark]: Boogie Preprocessor took 22.72ms. Allocated memory is still 90.2MB. Free memory was 66.8MB in the beginning and 66.0MB in the end (delta: 751.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:41:05,352 INFO L158 Benchmark]: RCFGBuilder took 206.38ms. Allocated memory is still 90.2MB. Free memory was 65.6MB in the beginning and 57.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 23:41:05,353 INFO L158 Benchmark]: BuchiAutomizer took 17884.37ms. Allocated memory was 90.2MB in the beginning and 163.6MB in the end (delta: 73.4MB). Free memory was 57.0MB in the beginning and 52.1MB in the end (delta: 4.9MB). Peak memory consumption was 80.4MB. Max. memory is 16.1GB. [2021-12-14 23:41:05,353 INFO L158 Benchmark]: Witness Printer took 2.91ms. Allocated memory is still 163.6MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:41:05,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 62.8MB in the beginning and 62.7MB in the end (delta: 28.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.84ms. Allocated memory is still 90.2MB. Free memory was 57.4MB in the beginning and 68.1MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.85ms. Allocated memory is still 90.2MB. Free memory was 68.1MB in the beginning and 66.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.72ms. Allocated memory is still 90.2MB. Free memory was 66.8MB in the beginning and 66.0MB in the end (delta: 751.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 206.38ms. Allocated memory is still 90.2MB. Free memory was 65.6MB in the beginning and 57.0MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 17884.37ms. Allocated memory was 90.2MB in the beginning and 163.6MB in the end (delta: 73.4MB). Free memory was 57.0MB in the beginning and 52.1MB in the end (delta: 4.9MB). Peak memory consumption was 80.4MB. Max. memory is 16.1GB. * Witness Printer took 2.91ms. Allocated memory is still 163.6MB. Free memory is still 52.1MB. 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 12 terminating modules (8 trivial, 3 deterministic, 1 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 n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 17.8s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 12.3s. Construction of modules took 1.0s. Büchi inclusion checks took 4.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 96 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 189 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 652 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 631 mSDsluCounter, 1022 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 779 mSDsCounter, 337 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1833 IncrementalHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 337 mSolverCounterUnsat, 243 mSDtfsCounter, 1833 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf98 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq184 hnf93 smp76 dnf100 smp100 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 21 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-14 23:41:05,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-12-14 23:41:05,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-12-14 23:41:05,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-12-14 23:41:05,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-12-14 23:41:06,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-12-14 23:41:06,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-12-14 23:41:06,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-12-14 23:41:06,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-14 23:41:07,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-14 23:41:07,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-14 23:41:07,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE