./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 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_5-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 15:28:46,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 15:28:46,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 15:28:46,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 15:28:46,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 15:28:46,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 15:28:46,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 15:28:46,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 15:28:46,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 15:28:46,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 15:28:46,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 15:28:46,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 15:28:46,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 15:28:46,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 15:28:46,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 15:28:46,038 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 15:28:46,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 15:28:46,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 15:28:46,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 15:28:46,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 15:28:46,043 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 15:28:46,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 15:28:46,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 15:28:46,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 15:28:46,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 15:28:46,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 15:28:46,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 15:28:46,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 15:28:46,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 15:28:46,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 15:28:46,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 15:28:46,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 15:28:46,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 15:28:46,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 15:28:46,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 15:28:46,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 15:28:46,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 15:28:46,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 15:28:46,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 15:28:46,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 15:28:46,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 15:28:46,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 15:28:46,063 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-23 15:28:46,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 15:28:46,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 15:28:46,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 15:28:46,088 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 15:28:46,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 15:28:46,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 15:28:46,090 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 15:28:46,090 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 15:28:46,090 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 15:28:46,091 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 15:28:46,091 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 15:28:46,091 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 15:28:46,091 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 15:28:46,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 15:28:46,092 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 15:28:46,092 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 15:28:46,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 15:28:46,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 15:28:46,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 15:28:46,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 15:28:46,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 15:28:46,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 15:28:46,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 15:28:46,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 15:28:46,094 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 15:28:46,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 15:28:46,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 15:28:46,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 15:28:46,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 15:28:46,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 15:28:46,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 15:28:46,096 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 15:28:46,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2022-07-23 15:28:46,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 15:28:46,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 15:28:46,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 15:28:46,335 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 15:28:46,336 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 15:28:46,337 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2022-07-23 15:28:46,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400fb3d0b/c0405a2883ef422f8f590cb376770ee6/FLAG7f9dc4da2 [2022-07-23 15:28:46,724 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 15:28:46,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2022-07-23 15:28:46,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400fb3d0b/c0405a2883ef422f8f590cb376770ee6/FLAG7f9dc4da2 [2022-07-23 15:28:47,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/400fb3d0b/c0405a2883ef422f8f590cb376770ee6 [2022-07-23 15:28:47,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 15:28:47,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 15:28:47,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 15:28:47,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 15:28:47,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 15:28:47,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aee9d00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47, skipping insertion in model container [2022-07-23 15:28:47,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 15:28:47,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 15:28:47,290 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_5-1.c[946,959] [2022-07-23 15:28:47,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:28:47,297 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 15:28:47,310 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_5-1.c[946,959] [2022-07-23 15:28:47,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:28:47,322 INFO L208 MainTranslator]: Completed translation [2022-07-23 15:28:47,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47 WrapperNode [2022-07-23 15:28:47,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 15:28:47,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 15:28:47,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 15:28:47,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 15:28:47,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,346 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-07-23 15:28:47,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 15:28:47,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 15:28:47,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 15:28:47,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 15:28:47,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 15:28:47,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 15:28:47,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 15:28:47,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 15:28:47,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (1/1) ... [2022-07-23 15:28:47,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:47,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:47,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:47,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 15:28:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 15:28:47,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 15:28:47,517 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-07-23 15:28:47,517 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-07-23 15:28:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-07-23 15:28:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-07-23 15:28:47,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 15:28:47,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 15:28:47,579 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 15:28:47,584 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 15:28:47,716 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 15:28:47,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 15:28:47,721 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 15:28:47,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:28:47 BoogieIcfgContainer [2022-07-23 15:28:47,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 15:28:47,723 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 15:28:47,723 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 15:28:47,726 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 15:28:47,726 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:28:47,727 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 03:28:47" (1/3) ... [2022-07-23 15:28:47,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60518c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:28:47, skipping insertion in model container [2022-07-23 15:28:47,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:28:47,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:28:47" (2/3) ... [2022-07-23 15:28:47,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60518c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:28:47, skipping insertion in model container [2022-07-23 15:28:47,728 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:28:47,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:28:47" (3/3) ... [2022-07-23 15:28:47,729 INFO L354 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2022-07-23 15:28:47,777 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 15:28:47,777 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 15:28:47,777 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 15:28:47,777 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 15:28:47,777 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 15:28:47,777 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 15:28:47,777 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 15:28:47,778 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 15:28:47,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-23 15:28:47,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-23 15:28:47,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:47,796 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:47,801 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 15:28:47,802 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:47,802 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 15:28:47,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-23 15:28:47,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-23 15:28:47,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:47,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:47,805 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 15:28:47,805 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:47,810 INFO L752 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-07-23 15:28:47,812 INFO L754 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-07-23 15:28:47,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:47,818 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-07-23 15:28:47,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:47,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153526866] [2022-07-23 15:28:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:47,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:47,887 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:28:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:47,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:28:47,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-07-23 15:28:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:47,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801148033] [2022-07-23 15:28:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:47,934 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:28:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:47,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:28:47,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:47,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-07-23 15:28:47,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:47,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950536641] [2022-07-23 15:28:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:47,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:47,956 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:28:47,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:47,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:28:48,143 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:28:48,144 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:28:48,144 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:28:48,144 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:28:48,144 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 15:28:48,144 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,145 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:28:48,145 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:28:48,145 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2022-07-23 15:28:48,145 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:28:48,145 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:28:48,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,227 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:28:48,228 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 15:28:48,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:48,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:48,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-23 15:28:48,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:48,260 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:48,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:48,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-23 15:28:48,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:48,280 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:48,301 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:48,302 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:48,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-07-23 15:28:48,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-23 15:28:48,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:48,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:48,342 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:48,342 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:48,358 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 [2022-07-23 15:28:48,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-23 15:28:48,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:48,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:48,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:48,368 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:48,384 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 [2022-07-23 15:28:48,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-23 15:28:48,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:48,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:48,394 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:48,394 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:48,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:48,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-23 15:28:48,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:48,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:48,421 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:48,421 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:48,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:48,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,438 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-23 15:28:48,440 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:48,440 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:48,457 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:48,457 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:48,472 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 [2022-07-23 15:28:48,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-23 15:28:48,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:48,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:48,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:48,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,527 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-23 15:28:48,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 15:28:48,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:48,592 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 15:28:48,595 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 [2022-07-23 15:28:48,595 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:28:48,595 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:28:48,595 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:28:48,595 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:28:48,595 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 15:28:48,595 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,596 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:28:48,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:28:48,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2022-07-23 15:28:48,596 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:28:48,596 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:28:48,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:48,653 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:28:48,656 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 15:28:48,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,682 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:48,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:48,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:48,689 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:48,689 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:48,689 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:48,690 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:48,690 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:48,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-23 15:28:48,703 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:28:48,735 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 [2022-07-23 15:28:48,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,736 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-23 15:28:48,738 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:48,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:48,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:48,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:48,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:48,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:48,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:48,745 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:48,760 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:28:48,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-07-23 15:28:48,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,779 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-23 15:28:48,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:48,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:48,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:48,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:48,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:48,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:48,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:48,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:48,800 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:28:48,817 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 [2022-07-23 15:28:48,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,818 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-23 15:28:48,822 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:48,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:48,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:48,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:48,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:48,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:48,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:48,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:48,834 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:28:48,851 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 [2022-07-23 15:28:48,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,853 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-23 15:28:48,855 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:48,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:48,861 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:48,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:48,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:48,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:48,862 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:48,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:48,877 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:28:48,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:48,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,913 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-23 15:28:48,915 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:48,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:48,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:48,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:48,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:48,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:48,922 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:48,922 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:48,944 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 15:28:48,948 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 15:28:48,948 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 15:28:48,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:48,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:48,950 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:48,962 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 15:28:48,962 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 15:28:48,962 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 15:28:48,962 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-07-23 15:28:48,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-23 15:28:48,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:48,982 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 15:28:49,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:49,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 15:28:49,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:49,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 15:28:49,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:28:49,115 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-07-23 15:28:49,116 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 15:28:49,228 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-07-23 15:28:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-23 15:28:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 15:28:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-07-23 15:28:49,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-07-23 15:28:49,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:28:49,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-07-23 15:28:49,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:28:49,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-07-23 15:28:49,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:28:49,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-07-23 15:28:49,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-23 15:28:49,247 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-07-23 15:28:49,248 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-07-23 15:28:49,248 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-07-23 15:28:49,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-07-23 15:28:49,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:49,249 INFO L369 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-07-23 15:28:49,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-07-23 15:28:49,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-07-23 15:28:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-07-23 15:28:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-07-23 15:28:49,269 INFO L392 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-07-23 15:28:49,269 INFO L374 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-07-23 15:28:49,269 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 15:28:49,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-07-23 15:28:49,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-23 15:28:49,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:49,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:49,272 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:49,272 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:49,273 INFO L752 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 197#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 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 [2022-07-23 15:28:49,273 INFO L754 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret7 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret4 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret6 := fibo1(~n - 1);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#46#return; 207#L25-1 [2022-07-23 15:28:49,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-07-23 15:28:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:49,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030697704] [2022-07-23 15:28:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:49,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:49,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 15:28:49,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:49,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 15:28:49,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:49,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030697704] [2022-07-23 15:28:49,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030697704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 15:28:49,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 15:28:49,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 15:28:49,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317767676] [2022-07-23 15:28:49,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 15:28:49,331 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 15:28:49,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:49,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-07-23 15:28:49,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:49,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985134427] [2022-07-23 15:28:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:49,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 15:28:49,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:49,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985134427] [2022-07-23 15:28:49,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985134427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 15:28:49,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 15:28:49,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 15:28:49,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450882091] [2022-07-23 15:28:49,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 15:28:49,362 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 15:28:49,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:28:49,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 15:28:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-23 15:28:49,365 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-23 15:28:49,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:49,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:28:49,439 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-07-23 15:28:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 15:28:49,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-07-23 15:28:49,443 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-23 15:28:49,445 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-07-23 15:28:49,445 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-07-23 15:28:49,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-07-23 15:28:49,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-07-23 15:28:49,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:49,446 INFO L369 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-07-23 15:28:49,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-07-23 15:28:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-07-23 15:28:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-07-23 15:28:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-07-23 15:28:49,467 INFO L392 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-07-23 15:28:49,467 INFO L374 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-07-23 15:28:49,467 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 15:28:49,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-07-23 15:28:49,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-07-23 15:28:49,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:49,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:49,469 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:49,469 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:49,477 INFO L752 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 342#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 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 [2022-07-23 15:28:49,478 INFO L754 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret7 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret4 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret6 := fibo1(~n - 1);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume 1 == ~n;#res := 1; 370#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 351#L25-1 [2022-07-23 15:28:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-07-23 15:28:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:49,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849565679] [2022-07-23 15:28:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:49,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:49,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 15:28:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:28:49,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:49,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849565679] [2022-07-23 15:28:49,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849565679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:49,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781515307] [2022-07-23 15:28:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:49,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:49,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:49,574 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:49,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-23 15:28:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:49,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 15:28:49,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:28:49,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:28:49,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781515307] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:49,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:49,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-07-23 15:28:49,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018799305] [2022-07-23 15:28:49,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:49,742 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 15:28:49,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:49,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-07-23 15:28:49,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:49,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723085858] [2022-07-23 15:28:49,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:49,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:49,760 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:28:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:49,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:28:49,954 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:28:49,954 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:28:49,954 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:28:49,954 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:28:49,954 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 15:28:49,954 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:49,954 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:28:49,954 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:28:49,954 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2022-07-23 15:28:49,954 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:28:49,954 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:28:49,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:49,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:49,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:49,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:49,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:49,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:49,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:49,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:50,007 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:28:50,008 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 15:28:50,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:50,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:50,011 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:50,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-23 15:28:50,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:50,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:50,032 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:50,032 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:50,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:50,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:50,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:50,068 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:50,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-23 15:28:50,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:50,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:50,092 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:50,092 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:50,123 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 [2022-07-23 15:28:50,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:50,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:50,124 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:50,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-23 15:28:50,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:50,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:50,147 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:50,147 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:50,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:50,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:50,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:50,176 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:50,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-23 15:28:50,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:50,179 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:50,200 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:50,200 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:50,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:50,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:50,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:50,219 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:50,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-23 15:28:50,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:50,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:50,256 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 [2022-07-23 15:28:50,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:50,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:50,259 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:50,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-23 15:28:50,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 15:28:50,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:51,102 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 15:28:51,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:51,106 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:28:51,106 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:28:51,106 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:28:51,106 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:28:51,106 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 15:28:51,106 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:51,106 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:28:51,106 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:28:51,106 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2022-07-23 15:28:51,106 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:28:51,106 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:28:51,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:51,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:51,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:51,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:51,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:51,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:51,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:51,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:51,153 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:28:51,154 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 15:28:51,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:51,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:51,155 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:51,164 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:51,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:51,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:51,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:51,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:51,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:51,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:51,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:51,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-23 15:28:51,182 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:28:51,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:51,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:51,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:51,199 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:51,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-23 15:28:51,201 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:51,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:51,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:51,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:51,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:51,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:51,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:51,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:51,222 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:28:51,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-23 15:28:51,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:51,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:51,239 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:51,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-23 15:28:51,241 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:51,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:51,246 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:51,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:51,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:51,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:51,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:51,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:51,263 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:28:51,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-07-23 15:28:51,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:51,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:51,279 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:51,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-23 15:28:51,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:51,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:51,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:51,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:51,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:51,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:51,293 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:51,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:51,297 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 15:28:51,300 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 15:28:51,300 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 15:28:51,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:51,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:51,302 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:51,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-23 15:28:51,303 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 15:28:51,303 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 15:28:51,303 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 15:28:51,303 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-07-23 15:28:51,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:51,321 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 15:28:51,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:51,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:51,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 15:28:51,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:51,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 15:28:51,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:51,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:51,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:28:51,521 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-07-23 15:28:51,521 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 15:28:51,798 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-07-23 15:28:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-07-23 15:28:51,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 15:28:51,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-07-23 15:28:51,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-07-23 15:28:51,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:28:51,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-07-23 15:28:51,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:28:51,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-07-23 15:28:51,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:28:51,802 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-07-23 15:28:51,813 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-07-23 15:28:51,816 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-07-23 15:28:51,816 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-07-23 15:28:51,816 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-07-23 15:28:51,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-07-23 15:28:51,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:51,818 INFO L369 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-07-23 15:28:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-07-23 15:28:51,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-07-23 15:28:51,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-07-23 15:28:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-07-23 15:28:51,828 INFO L392 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-07-23 15:28:51,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:28:51,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-23 15:28:51,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-23 15:28:51,829 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 15:28:51,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:28:51,964 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2022-07-23 15:28:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 15:28:51,965 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2022-07-23 15:28:51,967 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-07-23 15:28:51,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2022-07-23 15:28:51,969 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2022-07-23 15:28:51,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2022-07-23 15:28:51,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2022-07-23 15:28:51,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:51,970 INFO L369 hiAutomatonCegarLoop]: Abstraction has 185 states and 246 transitions. [2022-07-23 15:28:51,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2022-07-23 15:28:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2022-07-23 15:28:51,978 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) [2022-07-23 15:28:51,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2022-07-23 15:28:51,979 INFO L392 hiAutomatonCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-07-23 15:28:51,979 INFO L374 stractBuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-07-23 15:28:51,979 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 15:28:51,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2022-07-23 15:28:51,983 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-07-23 15:28:51,983 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:51,983 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:51,985 INFO L179 hiAutomatonCegarLoop]: 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] [2022-07-23 15:28:51,985 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-07-23 15:28:51,986 INFO L752 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 [2022-07-23 15:28:51,986 INFO L754 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 [2022-07-23 15:28:51,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:51,986 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2022-07-23 15:28:51,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:51,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584264820] [2022-07-23 15:28:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:51,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 15:28:52,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-23 15:28:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-23 15:28:52,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:52,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584264820] [2022-07-23 15:28:52,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584264820] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:52,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762747676] [2022-07-23 15:28:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:52,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:52,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:52,263 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:52,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-23 15:28:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 15:28:52,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-23 15:28:52,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-23 15:28:52,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762747676] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:52,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:52,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 31 [2022-07-23 15:28:52,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191342508] [2022-07-23 15:28:52,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:52,741 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 15:28:52,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2022-07-23 15:28:52,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:52,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18902142] [2022-07-23 15:28:52,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:52,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-23 15:28:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,846 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-23 15:28:52,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:52,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18902142] [2022-07-23 15:28:52,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18902142] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:52,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320053699] [2022-07-23 15:28:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:52,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:52,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:52,864 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:52,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-23 15:28:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:52,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 15:28:52,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-23 15:28:52,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-23 15:28:53,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320053699] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:53,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:53,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2022-07-23 15:28:53,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35023977] [2022-07-23 15:28:53,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:53,139 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 15:28:53,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:28:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 15:28:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-23 15:28:53,141 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) [2022-07-23 15:28:53,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:28:53,328 INFO L93 Difference]: Finished difference Result 228 states and 299 transitions. [2022-07-23 15:28:53,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 15:28:53,329 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 299 transitions. [2022-07-23 15:28:53,332 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-07-23 15:28:53,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 205 states and 268 transitions. [2022-07-23 15:28:53,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2022-07-23 15:28:53,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2022-07-23 15:28:53,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 268 transitions. [2022-07-23 15:28:53,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:53,335 INFO L369 hiAutomatonCegarLoop]: Abstraction has 205 states and 268 transitions. [2022-07-23 15:28:53,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 268 transitions. [2022-07-23 15:28:53,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2022-07-23 15:28:53,342 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) [2022-07-23 15:28:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2022-07-23 15:28:53,344 INFO L392 hiAutomatonCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-07-23 15:28:53,344 INFO L374 stractBuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-07-23 15:28:53,344 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-23 15:28:53,344 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 244 transitions. [2022-07-23 15:28:53,345 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-07-23 15:28:53,345 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:53,345 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:53,346 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:53,347 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-07-23 15:28:53,347 INFO L752 eck$LassoCheckResult]: Stem: 2735#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2736#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2765#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2797#fibo1ENTRY ~n := #in~n; 2786#L10 assume !(~n < 1); 2781#L12 assume !(1 == ~n); 2741#L15 call #t~ret4 := fibo2(~n - 1);< 2789#fibo2ENTRY ~n := #in~n; 2791#L20 assume !(~n < 1); 2740#L22 assume !(1 == ~n); 2742#L25 call #t~ret6 := fibo1(~n - 1);< 2810#fibo1ENTRY ~n := #in~n; 2808#L10 assume !(~n < 1); 2807#L12 assume !(1 == ~n); 2752#L15 call #t~ret4 := fibo2(~n - 1);< 2802#fibo2ENTRY ~n := #in~n; 2828#L20 assume !(~n < 1); 2827#L22 assume !(1 == ~n); 2772#L25 call #t~ret6 := fibo1(~n - 1);< 2810#fibo1ENTRY ~n := #in~n; 2811#L10 assume !(~n < 1); 2838#L12 assume 1 == ~n;#res := 1; 2839#fibo1FINAL assume true; 2908#fibo1EXIT >#46#return; 2751#L25-1 call #t~ret7 := fibo1(~n - 2);< 2754#fibo1ENTRY ~n := #in~n; 2914#L10 assume ~n < 1;#res := 0; 2912#fibo1FINAL assume true; 2910#fibo1EXIT >#48#return; 2774#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2775#fibo2FINAL assume true; 2782#fibo2EXIT >#50#return; 2851#L15-1 [2022-07-23 15:28:53,347 INFO L754 eck$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 [2022-07-23 15:28:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:53,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-07-23 15:28:53,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:53,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596493030] [2022-07-23 15:28:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:53,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:53,353 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:28:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:53,359 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:28:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:53,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2022-07-23 15:28:53,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:53,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880112678] [2022-07-23 15:28:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:53,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:53,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-23 15:28:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:53,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:53,437 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-23 15:28:53,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:53,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880112678] [2022-07-23 15:28:53,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880112678] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:53,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596749028] [2022-07-23 15:28:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:53,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:53,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:53,440 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:53,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-23 15:28:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:53,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 15:28:53,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 15:28:53,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-23 15:28:53,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596749028] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:53,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:53,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-07-23 15:28:53,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872207867] [2022-07-23 15:28:53,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:53,796 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 15:28:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:28:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 15:28:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-07-23 15:28:53,796 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) [2022-07-23 15:28:53,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:28:53,993 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2022-07-23 15:28:53,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-23 15:28:53,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 162 transitions. [2022-07-23 15:28:53,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-07-23 15:28:53,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 106 states and 132 transitions. [2022-07-23 15:28:53,996 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2022-07-23 15:28:53,997 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2022-07-23 15:28:53,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2022-07-23 15:28:53,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:53,997 INFO L369 hiAutomatonCegarLoop]: Abstraction has 106 states and 132 transitions. [2022-07-23 15:28:53,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2022-07-23 15:28:54,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-07-23 15:28:54,000 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) [2022-07-23 15:28:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2022-07-23 15:28:54,001 INFO L392 hiAutomatonCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-07-23 15:28:54,001 INFO L374 stractBuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-07-23 15:28:54,001 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-23 15:28:54,001 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 128 transitions. [2022-07-23 15:28:54,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-07-23 15:28:54,002 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:54,002 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:54,003 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:54,003 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:54,003 INFO L752 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 [2022-07-23 15:28:54,003 INFO L754 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 [2022-07-23 15:28:54,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:54,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2022-07-23 15:28:54,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:54,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034978652] [2022-07-23 15:28:54,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:54,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:54,017 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:28:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:54,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:28:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2022-07-23 15:28:54,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:54,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061180080] [2022-07-23 15:28:54,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:54,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:54,025 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:28:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:54,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:28:54,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:54,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2022-07-23 15:28:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:54,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954799931] [2022-07-23 15:28:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:54,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-23 15:28:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:54,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:54,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:54,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-23 15:28:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:54,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:54,113 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-23 15:28:54,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:54,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954799931] [2022-07-23 15:28:54,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954799931] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:54,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323876449] [2022-07-23 15:28:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:54,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:54,115 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:54,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-23 15:28:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:54,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 15:28:54,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:54,191 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-23 15:28:54,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-23 15:28:54,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323876449] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:54,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:54,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2022-07-23 15:28:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450997312] [2022-07-23 15:28:54,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:54,470 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:28:54,470 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:28:54,471 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:28:54,471 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:28:54,471 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 15:28:54,471 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:54,471 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:28:54,471 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:28:54,471 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2022-07-23 15:28:54,471 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:28:54,471 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:28:54,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:54,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:54,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:54,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:54,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:54,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:54,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:54,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:54,538 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:28:54,538 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 15:28:54,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:54,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:54,539 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:54,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:54,549 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:54,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-07-23 15:28:54,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:54,566 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:54,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:54,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:54,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:54,584 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:54,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-07-23 15:28:54,586 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:54,586 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:54,612 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 [2022-07-23 15:28:54,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:54,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:54,613 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:54,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-07-23 15:28:54,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 15:28:54,615 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:55,612 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 15:28:55,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:55,616 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:28:55,616 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:28:55,616 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:28:55,616 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:28:55,616 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 15:28:55,616 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:55,616 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:28:55,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:28:55,616 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2022-07-23 15:28:55,616 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:28:55,616 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:28:55,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:55,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:55,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:55,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:55,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:55,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:55,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:55,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:55,684 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:28:55,684 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 15:28:55,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:55,685 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:55,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-07-23 15:28:55,689 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:55,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:55,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:55,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:55,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:55,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:55,695 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:55,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:55,707 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:28:55,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-07-23 15:28:55,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:55,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:55,724 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:55,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-07-23 15:28:55,730 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:28:55,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:28:55,735 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:28:55,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:28:55,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:28:55,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:28:55,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:28:55,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:28:55,739 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 15:28:55,742 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 15:28:55,742 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 15:28:55,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:55,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:55,745 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:55,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-07-23 15:28:55,747 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 15:28:55,747 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 15:28:55,747 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 15:28:55,747 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-07-23 15:28:55,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:55,763 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 15:28:55,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:55,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 15:28:55,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:55,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:55,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-23 15:28:55,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 15:28:56,099 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2022-07-23 15:28:56,099 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) [2022-07-23 15:28:56,362 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. [2022-07-23 15:28:56,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2022-07-23 15:28:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-23 15:28:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2022-07-23 15:28:56,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2022-07-23 15:28:56,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:28:56,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2022-07-23 15:28:56,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:28:56,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2022-07-23 15:28:56,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:28:56,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 442 transitions. [2022-07-23 15:28:56,368 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2022-07-23 15:28:56,371 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 292 states and 395 transitions. [2022-07-23 15:28:56,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2022-07-23 15:28:56,371 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2022-07-23 15:28:56,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 395 transitions. [2022-07-23 15:28:56,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:56,372 INFO L369 hiAutomatonCegarLoop]: Abstraction has 292 states and 395 transitions. [2022-07-23 15:28:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 395 transitions. [2022-07-23 15:28:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2022-07-23 15:28:56,378 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) [2022-07-23 15:28:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2022-07-23 15:28:56,380 INFO L392 hiAutomatonCegarLoop]: Abstraction has 266 states and 357 transitions. [2022-07-23 15:28:56,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:28:56,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 15:28:56,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-23 15:28:56,381 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) [2022-07-23 15:28:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:28:56,503 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2022-07-23 15:28:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 15:28:56,504 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2022-07-23 15:28:56,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-07-23 15:28:56,506 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2022-07-23 15:28:56,506 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-07-23 15:28:56,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-07-23 15:28:56,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2022-07-23 15:28:56,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:56,506 INFO L369 hiAutomatonCegarLoop]: Abstraction has 122 states and 145 transitions. [2022-07-23 15:28:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2022-07-23 15:28:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2022-07-23 15:28:56,509 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) [2022-07-23 15:28:56,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2022-07-23 15:28:56,509 INFO L392 hiAutomatonCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-07-23 15:28:56,509 INFO L374 stractBuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-07-23 15:28:56,510 INFO L287 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-07-23 15:28:56,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 141 transitions. [2022-07-23 15:28:56,510 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-07-23 15:28:56,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:56,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:56,512 INFO L179 hiAutomatonCegarLoop]: 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] [2022-07-23 15:28:56,512 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:56,512 INFO L752 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 [2022-07-23 15:28:56,512 INFO L754 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 [2022-07-23 15:28:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2022-07-23 15:28:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:56,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250197980] [2022-07-23 15:28:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 15:28:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-23 15:28:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-23 15:28:56,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:56,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250197980] [2022-07-23 15:28:56,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250197980] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:56,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156316578] [2022-07-23 15:28:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:56,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:56,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:56,613 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:56,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-07-23 15:28:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 15:28:56,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-23 15:28:56,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-23 15:28:56,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156316578] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:56,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:56,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-07-23 15:28:56,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081184625] [2022-07-23 15:28:56,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:56,879 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 15:28:56,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:56,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2022-07-23 15:28:56,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:56,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935480803] [2022-07-23 15:28:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:56,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-23 15:28:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 15:28:56,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:56,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935480803] [2022-07-23 15:28:56,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935480803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:56,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435635350] [2022-07-23 15:28:56,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:56,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:56,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:56,944 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:56,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-07-23 15:28:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:56,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 15:28:56,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-23 15:28:57,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-23 15:28:57,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435635350] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:57,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:57,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-07-23 15:28:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178421443] [2022-07-23 15:28:57,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:57,180 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 15:28:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:28:57,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-23 15:28:57,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-23 15:28:57,180 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) [2022-07-23 15:28:57,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:28:57,272 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2022-07-23 15:28:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 15:28:57,273 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2022-07-23 15:28:57,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-07-23 15:28:57,275 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2022-07-23 15:28:57,275 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-07-23 15:28:57,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-07-23 15:28:57,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2022-07-23 15:28:57,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:57,275 INFO L369 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2022-07-23 15:28:57,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2022-07-23 15:28:57,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-07-23 15:28:57,277 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) [2022-07-23 15:28:57,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2022-07-23 15:28:57,278 INFO L392 hiAutomatonCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-07-23 15:28:57,278 INFO L374 stractBuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-07-23 15:28:57,278 INFO L287 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-07-23 15:28:57,278 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 141 transitions. [2022-07-23 15:28:57,279 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-07-23 15:28:57,279 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:57,279 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:57,280 INFO L179 hiAutomatonCegarLoop]: 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] [2022-07-23 15:28:57,280 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-07-23 15:28:57,280 INFO L752 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 [2022-07-23 15:28:57,280 INFO L754 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 [2022-07-23 15:28:57,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:57,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2022-07-23 15:28:57,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:57,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882899637] [2022-07-23 15:28:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:57,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-23 15:28:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-23 15:28:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-23 15:28:57,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882899637] [2022-07-23 15:28:57,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882899637] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:57,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459286743] [2022-07-23 15:28:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:57,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:57,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:57,397 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:57,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-07-23 15:28:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 15:28:57,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:57,486 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-23 15:28:57,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-23 15:28:57,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459286743] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:57,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:57,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-07-23 15:28:57,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520999043] [2022-07-23 15:28:57,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:57,616 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 15:28:57,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:57,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2022-07-23 15:28:57,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:57,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146888927] [2022-07-23 15:28:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:57,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-23 15:28:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-23 15:28:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-23 15:28:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-23 15:28:57,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:57,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146888927] [2022-07-23 15:28:57,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146888927] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:57,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854695066] [2022-07-23 15:28:57,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:57,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:57,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:57,708 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:57,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-07-23 15:28:57,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:57,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 15:28:57,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-23 15:28:57,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-23 15:28:58,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854695066] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:58,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:58,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-07-23 15:28:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992599963] [2022-07-23 15:28:58,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:58,025 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-23 15:28:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:28:58,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-23 15:28:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-07-23 15:28:58,026 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) [2022-07-23 15:28:58,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:28:58,259 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-07-23 15:28:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-23 15:28:58,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 109 transitions. [2022-07-23 15:28:58,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-23 15:28:58,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 89 states and 95 transitions. [2022-07-23 15:28:58,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-07-23 15:28:58,261 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-07-23 15:28:58,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2022-07-23 15:28:58,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 15:28:58,262 INFO L369 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-07-23 15:28:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2022-07-23 15:28:58,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-07-23 15:28:58,263 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) [2022-07-23 15:28:58,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-07-23 15:28:58,264 INFO L392 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-07-23 15:28:58,264 INFO L374 stractBuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-07-23 15:28:58,264 INFO L287 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-07-23 15:28:58,264 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2022-07-23 15:28:58,264 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-23 15:28:58,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:28:58,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:28:58,265 INFO L179 hiAutomatonCegarLoop]: 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] [2022-07-23 15:28:58,265 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 15:28:58,265 INFO L752 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 [2022-07-23 15:28:58,265 INFO L754 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 [2022-07-23 15:28:58,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:58,265 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2022-07-23 15:28:58,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:58,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128491884] [2022-07-23 15:28:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:58,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:58,270 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:28:58,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:58,276 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:28:58,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:58,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2022-07-23 15:28:58,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:58,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420748993] [2022-07-23 15:28:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:58,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:58,279 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:28:58,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:28:58,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:28:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:28:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2022-07-23 15:28:58,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:28:58,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133523654] [2022-07-23 15:28:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:28:58,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:28:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-23 15:28:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:58,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-23 15:28:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-23 15:28:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:58,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-23 15:28:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:28:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-23 15:28:58,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 15:28:58,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133523654] [2022-07-23 15:28:58,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133523654] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 15:28:58,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194581826] [2022-07-23 15:28:58,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 15:28:58,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 15:28:58,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:58,358 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 15:28:58,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-07-23 15:28:58,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-23 15:28:58,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 15:28:58,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-23 15:28:58,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:28:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-23 15:28:58,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 15:28:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-23 15:28:58,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194581826] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 15:28:58,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 15:28:58,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2022-07-23 15:28:58,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017501056] [2022-07-23 15:28:58,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 15:28:58,547 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:28:58,547 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:28:58,547 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:28:58,547 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:28:58,547 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 15:28:58,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:58,547 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:28:58,548 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:28:58,548 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2022-07-23 15:28:58,548 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:28:58,548 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:28:58,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:58,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:58,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:58,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:58,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:58,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:58,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:58,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:28:58,581 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:28:58,582 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 15:28:58,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:58,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:58,598 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:58,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-07-23 15:28:58,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:58,600 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:58,619 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:58,620 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:58,637 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 [2022-07-23 15:28:58,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:58,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:58,639 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:58,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-07-23 15:28:58,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:58,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:58,647 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:58,647 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:58,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:58,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:58,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:58,689 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:58,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-07-23 15:28:58,691 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:58,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:58,712 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:58,712 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:58,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:58,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:58,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:58,732 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) [2022-07-23 15:28:58,734 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 [2022-07-23 15:28:58,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:58,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:58,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:28:58,756 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:28:58,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:58,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:58,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:58,775 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:58,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:28:58,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:28:58,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-07-23 15:28:58,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-07-23 15:28:58,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:28:58,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:28:58,817 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:28:58,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-07-23 15:28:58,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 15:28:58,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:29:00,735 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 15:29:00,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:00,739 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:29:00,739 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:29:00,740 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:29:00,740 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:29:00,740 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 15:29:00,740 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:29:00,740 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:29:00,740 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:29:00,740 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2022-07-23 15:29:00,740 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:29:00,740 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:29:00,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:29:00,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:29:00,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:29:00,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:29:00,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:29:00,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:29:00,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:29:00,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 15:29:00,774 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:29:00,774 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 15:29:00,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:29:00,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:29:00,775 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:29:00,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-07-23 15:29:00,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:29:00,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:29:00,782 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:29:00,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:29:00,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:29:00,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:29:00,783 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:29:00,783 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:29:00,792 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:29:00,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:00,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:29:00,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:29:00,810 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:29:00,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-07-23 15:29:00,812 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:29:00,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:29:00,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:29:00,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:29:00,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:29:00,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:29:00,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:29:00,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:29:00,842 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:29:00,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:00,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:29:00,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:29:00,858 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:29:00,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-07-23 15:29:00,860 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:29:00,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:29:00,869 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:29:00,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:29:00,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:29:00,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:29:00,870 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:29:00,870 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:29:00,871 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:29:00,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:00,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:29:00,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:29:00,887 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:29:00,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-07-23 15:29:00,889 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:29:00,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:29:00,894 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:29:00,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:29:00,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:29:00,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:29:00,895 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:29:00,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:29:00,901 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:29:00,916 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 [2022-07-23 15:29:00,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:29:00,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:29:00,917 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:29:00,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-07-23 15:29:00,919 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 15:29:00,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:29:00,925 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:29:00,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:29:00,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:29:00,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:29:00,925 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:29:00,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:29:00,938 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 15:29:00,941 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 15:29:00,941 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 15:29:00,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:29:00,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:29:00,942 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 15:29:00,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-07-23 15:29:00,944 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 15:29:00,944 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 15:29:00,944 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 15:29:00,944 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-07-23 15:29:00,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2022-07-23 15:29:00,961 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 15:29:00,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:29:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:29:01,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-23 15:29:01,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:29:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:29:01,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 15:29:01,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:29:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:29:01,221 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-23 15:29:01,222 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) [2022-07-23 15:29:01,276 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. [2022-07-23 15:29:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-23 15:29:01,277 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) [2022-07-23 15:29:01,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-07-23 15:29:01,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-07-23 15:29:01,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:29:01,277 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 15:29:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:29:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:29:01,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-23 15:29:01,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:29:01,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:29:01,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 15:29:01,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:29:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:29:01,553 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-23 15:29:01,553 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) [2022-07-23 15:29:01,608 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. [2022-07-23 15:29:01,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-23 15:29:01,610 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) [2022-07-23 15:29:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-07-23 15:29:01,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-07-23 15:29:01,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:29:01,610 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 15:29:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:29:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:29:01,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-23 15:29:01,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:29:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:29:01,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-23 15:29:01,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:29:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 15:29:01,845 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-07-23 15:29:01,845 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) [2022-07-23 15:29:01,934 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. [2022-07-23 15:29:01,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-07-23 15:29:01,935 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) [2022-07-23 15:29:01,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2022-07-23 15:29:01,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2022-07-23 15:29:01,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:29:01,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2022-07-23 15:29:01,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:29:01,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2022-07-23 15:29:01,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:29:01,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2022-07-23 15:29:01,938 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 15:29:01,938 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2022-07-23 15:29:01,938 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 15:29:01,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 15:29:01,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 15:29:01,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 15:29:01,939 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 15:29:01,939 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 15:29:01,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 15:29:01,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 15:29:01,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-23 15:29:01,939 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) [2022-07-23 15:29:01,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 15:29:01,940 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-07-23 15:29:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 15:29:01,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-07-23 15:29:01,940 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 15:29:01,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-07-23 15:29:01,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 15:29:01,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 15:29:01,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 15:29:01,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 15:29:01,941 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 15:29:01,941 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 15:29:01,941 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 15:29:01,941 INFO L287 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-07-23 15:29:01,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 15:29:01,941 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 15:29:01,941 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 15:29:01,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 03:29:01 BoogieIcfgContainer [2022-07-23 15:29:01,946 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 15:29:01,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 15:29:01,947 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 15:29:01,947 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 15:29:01,947 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:28:47" (3/4) ... [2022-07-23 15:29:01,949 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 15:29:01,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 15:29:01,949 INFO L158 Benchmark]: Toolchain (without parser) took 14804.14ms. Allocated memory was 117.4MB in the beginning and 172.0MB in the end (delta: 54.5MB). Free memory was 93.7MB in the beginning and 124.1MB in the end (delta: -30.3MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2022-07-23 15:29:01,950 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 74.4MB in the end (delta: 64.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:29:01,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.83ms. Allocated memory is still 117.4MB. Free memory was 93.7MB in the beginning and 92.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 15:29:01,950 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.79ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 90.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 15:29:01,950 INFO L158 Benchmark]: Boogie Preprocessor took 23.25ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 89.9MB in the end (delta: 910.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:29:01,950 INFO L158 Benchmark]: RCFGBuilder took 352.28ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 80.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 15:29:01,951 INFO L158 Benchmark]: BuchiAutomizer took 14222.80ms. Allocated memory was 117.4MB in the beginning and 172.0MB in the end (delta: 54.5MB). Free memory was 80.7MB in the beginning and 124.1MB in the end (delta: -43.4MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-07-23 15:29:01,951 INFO L158 Benchmark]: Witness Printer took 2.55ms. Allocated memory is still 172.0MB. Free memory is still 124.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:29:01,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 74.4MB in the end (delta: 64.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.83ms. Allocated memory is still 117.4MB. Free memory was 93.7MB in the beginning and 92.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.79ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 90.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.25ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 89.9MB in the end (delta: 910.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.28ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 80.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 14222.80ms. Allocated memory was 117.4MB in the beginning and 172.0MB in the end (delta: 54.5MB). Free memory was 80.7MB in the beginning and 124.1MB in the end (delta: -43.4MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 2.55ms. Allocated memory is still 172.0MB. Free memory is still 124.1MB. 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 14.1s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 10.5s. Construction of modules took 0.8s. Büchi inclusion checks took 2.4s. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 652 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 631 mSDsluCounter, 828 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 585 mSDsCounter, 337 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2027 IncrementalHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 337 mSolverCounterUnsat, 243 mSDtfsCounter, 2027 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf93 smp76 dnf100 smp100 tf109 neg96 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-23 15:29:01,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-07-23 15:29:02,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:02,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:02,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-07-23 15:29:02,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:02,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:03,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:03,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-07-23 15:29:03,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:03,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-23 15:29:03,994 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