./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 906a4fb5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23bbff91fb2bcbd238fb97db06c7d4983c05a850 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-906a4fb [2020-10-19 20:07:41,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 20:07:41,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 20:07:42,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 20:07:42,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 20:07:42,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 20:07:42,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 20:07:42,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 20:07:42,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 20:07:42,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 20:07:42,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 20:07:42,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 20:07:42,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 20:07:42,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 20:07:42,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 20:07:42,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 20:07:42,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 20:07:42,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 20:07:42,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 20:07:42,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 20:07:42,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 20:07:42,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 20:07:42,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 20:07:42,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 20:07:42,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 20:07:42,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 20:07:42,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 20:07:42,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 20:07:42,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 20:07:42,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 20:07:42,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 20:07:42,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 20:07:42,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 20:07:42,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 20:07:42,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 20:07:42,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 20:07:42,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 20:07:42,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 20:07:42,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 20:07:42,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 20:07:42,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 20:07:42,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-19 20:07:42,094 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 20:07:42,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 20:07:42,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 20:07:42,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 20:07:42,096 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 20:07:42,097 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-19 20:07:42,097 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-19 20:07:42,097 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-19 20:07:42,097 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-19 20:07:42,097 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-19 20:07:42,098 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-19 20:07:42,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 20:07:42,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 20:07:42,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-19 20:07:42,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 20:07:42,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 20:07:42,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 20:07:42,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-19 20:07:42,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-19 20:07:42,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-19 20:07:42,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 20:07:42,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 20:07:42,100 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-19 20:07:42,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 20:07:42,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-19 20:07:42,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 20:07:42,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 20:07:42,101 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-19 20:07:42,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 20:07:42,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 20:07:42,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 20:07:42,102 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-19 20:07:42,103 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-19 20:07:42,103 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 23bbff91fb2bcbd238fb97db06c7d4983c05a850 [2020-10-19 20:07:42,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 20:07:42,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 20:07:42,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 20:07:42,457 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 20:07:42,458 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 20:07:42,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2020-10-19 20:07:42,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3758c254a/f93c0a6765b94804822ab547572a2c6f/FLAG2f5c7c40c [2020-10-19 20:07:42,947 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 20:07:42,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2020-10-19 20:07:42,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3758c254a/f93c0a6765b94804822ab547572a2c6f/FLAG2f5c7c40c [2020-10-19 20:07:43,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3758c254a/f93c0a6765b94804822ab547572a2c6f [2020-10-19 20:07:43,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 20:07:43,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 20:07:43,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 20:07:43,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 20:07:43,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 20:07:43,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612cd91f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43, skipping insertion in model container [2020-10-19 20:07:43,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 20:07:43,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 20:07:43,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:07:43,512 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 20:07:43,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 20:07:43,556 INFO L208 MainTranslator]: Completed translation [2020-10-19 20:07:43,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43 WrapperNode [2020-10-19 20:07:43,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 20:07:43,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 20:07:43,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 20:07:43,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 20:07:43,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 20:07:43,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 20:07:43,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 20:07:43,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 20:07:43,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... [2020-10-19 20:07:43,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 20:07:43,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 20:07:43,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 20:07:43,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 20:07:43,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 20:07:43,759 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-19 20:07:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-19 20:07:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 20:07:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-19 20:07:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-19 20:07:43,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 20:07:43,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 20:07:43,991 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 20:07:43,991 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-19 20:07:44,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:07:44 BoogieIcfgContainer [2020-10-19 20:07:44,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 20:07:44,009 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-19 20:07:44,009 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-19 20:07:44,016 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-19 20:07:44,018 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:07:44,018 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.10 08:07:43" (1/3) ... [2020-10-19 20:07:44,022 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@546f591b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:07:44, skipping insertion in model container [2020-10-19 20:07:44,022 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:07:44,022 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 08:07:43" (2/3) ... [2020-10-19 20:07:44,026 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@546f591b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.10 08:07:44, skipping insertion in model container [2020-10-19 20:07:44,026 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-19 20:07:44,027 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:07:44" (3/3) ... [2020-10-19 20:07:44,029 INFO L373 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2020-10-19 20:07:44,089 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-19 20:07:44,089 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-19 20:07:44,089 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-19 20:07:44,089 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 20:07:44,090 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 20:07:44,090 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-19 20:07:44,090 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 20:07:44,090 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-19 20:07:44,104 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-10-19 20:07:44,130 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:44,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:44,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:44,137 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 20:07:44,137 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:44,137 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-19 20:07:44,138 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-10-19 20:07:44,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:44,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:44,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:44,142 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-19 20:07:44,142 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:44,148 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 12#L-1true havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 22#L39true call main_#t~ret11 := fibo1(main_~x~0);< 27#fibo1ENTRYtrue [2020-10-19 20:07:44,149 INFO L796 eck$LassoCheckResult]: Loop: 27#fibo1ENTRYtrue ~n := #in~n; 4#L10true assume !(~n < 1); 10#L12true assume !(1 == ~n); 13#L15true call #t~ret7 := fibo2(~n - 1);< 15#fibo2ENTRYtrue ~n := #in~n; 28#L20true assume !(~n < 1); 20#L22true assume !(1 == ~n); 9#L25true call #t~ret9 := fibo1(~n - 1);< 27#fibo1ENTRYtrue [2020-10-19 20:07:44,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:44,155 INFO L82 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2020-10-19 20:07:44,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:44,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780472937] [2020-10-19 20:07:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,280 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,303 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:44,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:44,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2020-10-19 20:07:44,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:44,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917755366] [2020-10-19 20:07:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,314 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,322 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:44,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2020-10-19 20:07:44,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:44,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222999100] [2020-10-19 20:07:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,344 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:44,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:44,394 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:44,711 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:44,712 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:44,712 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:44,713 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:44,713 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:44,713 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:44,714 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:44,714 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:44,714 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2020-10-19 20:07:44,714 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:44,715 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:44,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,754 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:44,913 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:44,914 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:44,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:44,921 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:44,931 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:44,932 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:44,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:44,977 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:44,984 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:44,984 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,026 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,033 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,033 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,079 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,086 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,086 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,122 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,127 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:45,167 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,167 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,207 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,212 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:45,243 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:45,243 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:45,271 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:45,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:45,362 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:45,365 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:45,365 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:45,365 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:45,365 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:45,366 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:45,366 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,366 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:45,366 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:45,366 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2020-10-19 20:07:45,366 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:45,366 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:45,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,381 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:45,481 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:45,487 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,499 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,501 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,504 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,512 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:45,563 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,568 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,568 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,571 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,609 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,616 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,643 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,645 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,646 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,650 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,674 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,676 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,681 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,708 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,710 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,714 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,737 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,739 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,739 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,741 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,765 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,766 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,771 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,795 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:45,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:45,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:45,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:45,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:45,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:45,804 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:45,804 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:45,807 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:45,810 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 20:07:45,810 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:45,823 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:45,823 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:45,824 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:45,824 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2020-10-19 20:07:45,849 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:45,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:45,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 20:07:45,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:45,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 20:07:45,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:46,038 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 [2020-10-19 20:07:46,040 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states. Second operand 6 states. [2020-10-19 20:07:46,255 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states.. Second operand 6 states. Result 85 states and 117 transitions. Complement of second has 24 states. [2020-10-19 20:07:46,256 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 [2020-10-19 20:07:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-19 20:07:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2020-10-19 20:07:46,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2020-10-19 20:07:46,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:46,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2020-10-19 20:07:46,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:46,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2020-10-19 20:07:46,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:46,266 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2020-10-19 20:07:46,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:46,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2020-10-19 20:07:46,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2020-10-19 20:07:46,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2020-10-19 20:07:46,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2020-10-19 20:07:46,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:46,289 INFO L691 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2020-10-19 20:07:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2020-10-19 20:07:46,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-10-19 20:07:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-19 20:07:46,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2020-10-19 20:07:46,330 INFO L714 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-10-19 20:07:46,330 INFO L594 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-10-19 20:07:46,330 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-19 20:07:46,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2020-10-19 20:07:46,333 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:46,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:46,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:46,336 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:46,336 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:46,337 INFO L794 eck$LassoCheckResult]: Stem: 234#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 230#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 216#L39 call main_#t~ret11 := fibo1(main_~x~0);< 222#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 217#L12 assume !(1 == ~n); 201#L15 call #t~ret7 := fibo2(~n - 1);< 233#fibo2ENTRY ~n := #in~n; 237#L20 assume !(~n < 1); 251#L22 assume !(1 == ~n); 212#L25 call #t~ret9 := fibo1(~n - 1);< 227#fibo1ENTRY ~n := #in~n; 211#L10 assume ~n < 1;#res := 0; 213#fibo1FINAL assume true; 220#fibo1EXIT >#48#return; 221#L25-1 [2020-10-19 20:07:46,337 INFO L796 eck$LassoCheckResult]: Loop: 221#L25-1 call #t~ret10 := fibo1(~n - 2);< 226#fibo1ENTRY ~n := #in~n; 246#L10 assume !(~n < 1); 247#L12 assume !(1 == ~n); 200#L15 call #t~ret7 := fibo2(~n - 1);< 239#fibo2ENTRY ~n := #in~n; 244#L20 assume !(~n < 1); 243#L22 assume !(1 == ~n); 224#L25 call #t~ret9 := fibo1(~n - 1);< 226#fibo1ENTRY ~n := #in~n; 246#L10 assume ~n < 1;#res := 0; 225#fibo1FINAL assume true; 229#fibo1EXIT >#48#return; 221#L25-1 [2020-10-19 20:07:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:46,338 INFO L82 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2020-10-19 20:07:46,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:46,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236804524] [2020-10-19 20:07:46,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:46,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236804524] [2020-10-19 20:07:46,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:07:46,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 20:07:46,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466807692] [2020-10-19 20:07:46,450 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:46,451 INFO L82 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2020-10-19 20:07:46,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:46,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70470076] [2020-10-19 20:07:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:46,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70470076] [2020-10-19 20:07:46,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 20:07:46,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 20:07:46,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178364878] [2020-10-19 20:07:46,500 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 20:07:46,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:46,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 20:07:46,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-19 20:07:46,506 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand 6 states. [2020-10-19 20:07:46,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:46,589 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2020-10-19 20:07:46,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 20:07:46,591 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2020-10-19 20:07:46,595 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:46,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2020-10-19 20:07:46,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2020-10-19 20:07:46,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2020-10-19 20:07:46,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2020-10-19 20:07:46,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:46,599 INFO L691 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2020-10-19 20:07:46,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2020-10-19 20:07:46,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-10-19 20:07:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-19 20:07:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2020-10-19 20:07:46,609 INFO L714 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-10-19 20:07:46,609 INFO L594 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2020-10-19 20:07:46,609 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-19 20:07:46,609 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2020-10-19 20:07:46,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-19 20:07:46,611 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:46,612 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:46,613 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:46,613 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:46,613 INFO L794 eck$LassoCheckResult]: Stem: 375#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 374#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 355#L39 call main_#t~ret11 := fibo1(main_~x~0);< 364#fibo1ENTRY ~n := #in~n; 354#L10 assume !(~n < 1); 356#L12 assume !(1 == ~n); 346#L15 call #t~ret7 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 399#L20 assume !(~n < 1); 400#L22 assume !(1 == ~n); 352#L25 call #t~ret9 := fibo1(~n - 1);< 371#fibo1ENTRY ~n := #in~n; 351#L10 assume !(~n < 1); 353#L12 assume 1 == ~n;#res := 1; 372#fibo1FINAL assume true; 365#fibo1EXIT >#48#return; 366#L25-1 [2020-10-19 20:07:46,614 INFO L796 eck$LassoCheckResult]: Loop: 366#L25-1 call #t~ret10 := fibo1(~n - 2);< 370#fibo1ENTRY ~n := #in~n; 389#L10 assume !(~n < 1); 390#L12 assume !(1 == ~n); 344#L15 call #t~ret7 := fibo2(~n - 1);< 388#fibo2ENTRY ~n := #in~n; 395#L20 assume !(~n < 1); 393#L22 assume !(1 == ~n); 368#L25 call #t~ret9 := fibo1(~n - 1);< 370#fibo1ENTRY ~n := #in~n; 389#L10 assume !(~n < 1); 390#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 373#fibo1EXIT >#48#return; 366#L25-1 [2020-10-19 20:07:46,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:46,614 INFO L82 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2020-10-19 20:07:46,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:46,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339023118] [2020-10-19 20:07:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:46,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339023118] [2020-10-19 20:07:46,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876799746] [2020-10-19 20:07:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:46,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:46,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:46,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:46,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-19 20:07:46,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023788379] [2020-10-19 20:07:46,797 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:46,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2020-10-19 20:07:46,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:46,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911464077] [2020-10-19 20:07:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:46,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:46,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:46,814 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:47,056 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:47,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:47,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:47,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:47,056 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:47,057 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:47,057 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:47,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:47,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2020-10-19 20:07:47,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:47,057 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:47,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,139 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:47,140 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,144 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:47,147 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:47,148 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,190 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:47,194 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:47,194 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,235 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:47,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:47,239 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,281 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:47,285 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:47,285 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:47,327 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:47,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:47,370 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:47,945 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:47,948 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:47,948 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:47,948 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:47,948 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:47,948 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:47,948 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:47,949 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:47,949 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:47,949 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2020-10-19 20:07:47,949 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:47,949 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:47,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:47,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:48,030 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:48,030 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:48,044 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:48,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:48,046 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:48,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:48,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:48,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:48,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:48,047 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:48,051 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:48,077 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:48,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:48,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:48,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:48,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:48,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:48,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:48,080 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:48,081 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:48,106 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:48,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:48,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:48,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:48,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:48,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:48,110 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:48,110 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:48,111 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:48,135 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:48,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:48,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:48,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:48,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:48,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:48,139 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:48,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:48,142 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:48,148 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:48,148 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:48,163 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:48,164 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:48,164 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:48,164 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:48,189 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:48,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:48,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:48,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 20:07:48,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:48,398 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 [2020-10-19 20:07:48,398 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand 10 states. [2020-10-19 20:07:48,947 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand 10 states. Result 191 states and 263 transitions. Complement of second has 40 states. [2020-10-19 20:07:48,947 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 [2020-10-19 20:07:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 20:07:48,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2020-10-19 20:07:48,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2020-10-19 20:07:48,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:48,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2020-10-19 20:07:48,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:48,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2020-10-19 20:07:48,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:48,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2020-10-19 20:07:48,962 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:48,968 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2020-10-19 20:07:48,968 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2020-10-19 20:07:48,969 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2020-10-19 20:07:48,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2020-10-19 20:07:48,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:48,971 INFO L691 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2020-10-19 20:07:48,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2020-10-19 20:07:48,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2020-10-19 20:07:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-19 20:07:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2020-10-19 20:07:48,991 INFO L714 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2020-10-19 20:07:48,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:48,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 20:07:48,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-19 20:07:48,992 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand 10 states. [2020-10-19 20:07:49,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:49,182 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2020-10-19 20:07:49,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 20:07:49,185 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2020-10-19 20:07:49,191 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:49,196 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2020-10-19 20:07:49,197 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2020-10-19 20:07:49,197 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2020-10-19 20:07:49,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2020-10-19 20:07:49,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:49,198 INFO L691 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2020-10-19 20:07:49,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2020-10-19 20:07:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2020-10-19 20:07:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-19 20:07:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2020-10-19 20:07:49,215 INFO L714 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-10-19 20:07:49,215 INFO L594 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2020-10-19 20:07:49,215 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-19 20:07:49,216 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2020-10-19 20:07:49,218 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:49,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:49,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:49,223 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-10-19 20:07:49,224 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2020-10-19 20:07:49,224 INFO L794 eck$LassoCheckResult]: Stem: 1219#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1214#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 1192#L39 call main_#t~ret11 := fibo1(main_~x~0);< 1193#fibo1ENTRY ~n := #in~n; 1257#L10 assume !(~n < 1); 1206#L12 assume !(1 == ~n); 1159#L15 call #t~ret7 := fibo2(~n - 1);< 1216#fibo2ENTRY ~n := #in~n; 1221#L20 assume !(~n < 1); 1175#L22 assume !(1 == ~n); 1176#L25 call #t~ret9 := fibo1(~n - 1);< 1205#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1184#L12 assume !(1 == ~n); 1203#L15 call #t~ret7 := fibo2(~n - 1);< 1259#fibo2ENTRY ~n := #in~n; 1261#L20 assume !(~n < 1); 1262#L22 assume !(1 == ~n); 1183#L25 call #t~ret9 := fibo1(~n - 1);< 1205#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1184#L12 assume !(1 == ~n); 1203#L15 call #t~ret7 := fibo2(~n - 1);< 1259#fibo2ENTRY ~n := #in~n; 1261#L20 assume ~n < 1;#res := 0; 1260#fibo2FINAL assume true; 1258#fibo2EXIT >#52#return; 1204#L15-1 call #t~ret8 := fibo2(~n - 2);< 1223#fibo2ENTRY ~n := #in~n; 1317#L20 assume !(~n < 1); 1316#L22 assume !(1 == ~n); 1183#L25 call #t~ret9 := fibo1(~n - 1);< 1205#fibo1ENTRY ~n := #in~n; 1256#L10 assume !(~n < 1); 1263#L12 assume 1 == ~n;#res := 1; 1264#fibo1FINAL assume true; 1251#fibo1EXIT >#48#return; 1208#L25-1 call #t~ret10 := fibo1(~n - 2);< 1213#fibo1ENTRY ~n := #in~n; 1249#L10 assume !(~n < 1); 1247#L12 assume !(1 == ~n); 1212#L15 call #t~ret7 := fibo2(~n - 1);< 1246#fibo2ENTRY ~n := #in~n; 1243#L20 assume ~n < 1;#res := 0; 1244#fibo2FINAL assume true; 1248#fibo2EXIT >#52#return; 1211#L15-1 call #t~ret8 := fibo2(~n - 2);< 1246#fibo2ENTRY ~n := #in~n; 1243#L20 assume !(~n < 1); 1239#L22 assume 1 == ~n;#res := 1; 1240#fibo2FINAL assume true; 1308#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#50#return; 1188#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#48#return; 1186#L25-1 call #t~ret10 := fibo1(~n - 2);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#52#return; 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#50#return; 1188#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#52#return; 1172#L15-1 [2020-10-19 20:07:49,225 INFO L796 eck$LassoCheckResult]: Loop: 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume !(~n < 1); 1169#L22 assume !(1 == ~n); 1174#L25 call #t~ret9 := fibo1(~n - 1);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume !(~n < 1); 1169#L22 assume !(1 == ~n); 1174#L25 call #t~ret9 := fibo1(~n - 1);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#52#return; 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#48#return; 1186#L25-1 call #t~ret10 := fibo1(~n - 2);< 1300#fibo1ENTRY ~n := #in~n; 1298#L10 assume !(~n < 1); 1296#L12 assume !(1 == ~n); 1170#L15 call #t~ret7 := fibo2(~n - 1);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#52#return; 1172#L15-1 call #t~ret8 := fibo2(~n - 2);< 1215#fibo2ENTRY ~n := #in~n; 1220#L20 assume ~n < 1;#res := 0; 1173#fibo2FINAL assume true; 1310#fibo2EXIT >#54#return; 1307#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1319#fibo1FINAL assume true; 1318#fibo1EXIT >#50#return; 1188#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#52#return; 1172#L15-1 [2020-10-19 20:07:49,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:49,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1380034771, now seen corresponding path program 1 times [2020-10-19 20:07:49,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:49,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252957686] [2020-10-19 20:07:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-19 20:07:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-19 20:07:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-19 20:07:49,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252957686] [2020-10-19 20:07:49,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411037403] [2020-10-19 20:07:49,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 20:07:49,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-19 20:07:49,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:49,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 19 [2020-10-19 20:07:49,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155585753] [2020-10-19 20:07:49,756 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:49,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:49,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1411437133, now seen corresponding path program 1 times [2020-10-19 20:07:49,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:49,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597937870] [2020-10-19 20:07:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-19 20:07:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-19 20:07:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-19 20:07:49,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597937870] [2020-10-19 20:07:49,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529543170] [2020-10-19 20:07:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:49,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:49,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:49,983 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-19 20:07:49,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:49,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2020-10-19 20:07:49,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720966877] [2020-10-19 20:07:49,985 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 20:07:49,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:49,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-19 20:07:49,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-19 20:07:49,986 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand 12 states. [2020-10-19 20:07:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:50,346 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2020-10-19 20:07:50,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 20:07:50,347 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2020-10-19 20:07:50,351 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:50,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2020-10-19 20:07:50,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2020-10-19 20:07:50,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2020-10-19 20:07:50,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2020-10-19 20:07:50,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:50,358 INFO L691 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2020-10-19 20:07:50,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2020-10-19 20:07:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2020-10-19 20:07:50,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-19 20:07:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2020-10-19 20:07:50,375 INFO L714 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2020-10-19 20:07:50,375 INFO L594 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2020-10-19 20:07:50,375 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-10-19 20:07:50,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2020-10-19 20:07:50,378 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2020-10-19 20:07:50,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:50,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:50,379 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:50,379 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:50,380 INFO L794 eck$LassoCheckResult]: Stem: 2331#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2321#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 2303#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2304#fibo1ENTRY ~n := #in~n; 2366#L10 assume !(~n < 1); 2320#L12 assume !(1 == ~n); 2284#L15 call #t~ret7 := fibo2(~n - 1);< 2324#fibo2ENTRY ~n := #in~n; 2415#L20 assume !(~n < 1); 2283#L22 assume !(1 == ~n); 2285#L25 call #t~ret9 := fibo1(~n - 1);< 2313#fibo1ENTRY ~n := #in~n; 2352#L10 assume !(~n < 1); 2350#L12 assume !(1 == ~n); 2267#L15 call #t~ret7 := fibo2(~n - 1);< 2346#fibo2ENTRY ~n := #in~n; 2369#L20 assume !(~n < 1); 2368#L22 assume !(1 == ~n); 2338#L25 call #t~ret9 := fibo1(~n - 1);< 2313#fibo1ENTRY ~n := #in~n; 2355#L10 assume !(~n < 1); 2379#L12 assume 1 == ~n;#res := 1; 2380#fibo1FINAL assume true; 2446#fibo1EXIT >#48#return; 2293#L25-1 call #t~ret10 := fibo1(~n - 2);< 2316#fibo1ENTRY ~n := #in~n; 2292#L10 assume ~n < 1;#res := 0; 2294#fibo1FINAL assume true; 2449#fibo1EXIT >#50#return; 2266#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 2269#fibo2FINAL assume true; 2389#fibo2EXIT >#52#return; 2288#L15-1 [2020-10-19 20:07:50,380 INFO L796 eck$LassoCheckResult]: Loop: 2288#L15-1 call #t~ret8 := fibo2(~n - 2);< 2337#fibo2ENTRY ~n := #in~n; 2416#L20 assume !(~n < 1); 2417#L22 assume !(1 == ~n); 2396#L25 call #t~ret9 := fibo1(~n - 1);< 2405#fibo1ENTRY ~n := #in~n; 2410#L10 assume !(~n < 1); 2408#L12 assume !(1 == ~n); 2289#L15 call #t~ret7 := fibo2(~n - 1);< 2337#fibo2ENTRY ~n := #in~n; 2416#L20 assume !(~n < 1); 2417#L22 assume 1 == ~n;#res := 1; 2286#fibo2FINAL assume true; 2290#fibo2EXIT >#52#return; 2288#L15-1 [2020-10-19 20:07:50,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:50,380 INFO L82 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2020-10-19 20:07:50,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:50,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068818271] [2020-10-19 20:07:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:50,390 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:50,399 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:50,406 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:50,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:50,406 INFO L82 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2020-10-19 20:07:50,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:50,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35478478] [2020-10-19 20:07:50,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:50,411 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:50,413 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:50,416 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:50,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1977386679, now seen corresponding path program 1 times [2020-10-19 20:07:50,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:50,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052972135] [2020-10-19 20:07:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-19 20:07:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:50,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-19 20:07:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,526 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-19 20:07:50,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052972135] [2020-10-19 20:07:50,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644411506] [2020-10-19 20:07:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:50,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 20:07:50,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:50,608 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 36 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-19 20:07:50,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:50,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2020-10-19 20:07:50,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286766359] [2020-10-19 20:07:50,770 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:50,770 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:50,770 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:50,770 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:50,770 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:50,770 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:50,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:50,771 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration5_Loop [2020-10-19 20:07:50,771 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:50,771 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:50,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:50,866 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:50,867 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,875 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,875 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,902 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,902 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,928 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,928 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=1} Honda state: {fibo1_#t~ret7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:50,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:50,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:50,980 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:50,980 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:51,002 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,030 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:51,030 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:51,657 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:51,659 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:51,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:51,660 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:51,660 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:51,660 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:51,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:51,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:51,660 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration5_Loop [2020-10-19 20:07:51,660 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:51,660 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:51,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:51,742 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:51,743 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,746 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,773 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,776 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,802 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,805 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,811 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:51,849 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,852 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,853 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,854 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:51,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,893 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,897 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,930 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,940 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,969 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,971 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,971 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,971 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,971 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,972 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,972 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:51,973 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:51,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:51,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:51,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:51,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:51,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:51,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:51,999 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:51,999 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:52,002 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:52,004 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:52,005 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:52,007 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:52,008 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:52,008 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:52,008 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2020-10-19 20:07:52,028 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:52,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:52,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 20:07:52,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:52,130 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:52,147 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:52,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 20:07:52,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:52,310 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 [2020-10-19 20:07:52,310 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 184 states and 238 transitions. cyclomatic complexity: 59 Second operand 10 states. [2020-10-19 20:07:52,829 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 184 states and 238 transitions. cyclomatic complexity: 59. Second operand 10 states. Result 717 states and 936 transitions. Complement of second has 40 states. [2020-10-19 20:07:52,830 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 [2020-10-19 20:07:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-19 20:07:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 69 transitions. [2020-10-19 20:07:52,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 69 transitions. Stem has 32 letters. Loop has 14 letters. [2020-10-19 20:07:52,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:52,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 69 transitions. Stem has 46 letters. Loop has 14 letters. [2020-10-19 20:07:52,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:52,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 69 transitions. Stem has 32 letters. Loop has 28 letters. [2020-10-19 20:07:52,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:52,842 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 717 states and 936 transitions. [2020-10-19 20:07:52,857 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 40 [2020-10-19 20:07:52,871 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 717 states to 646 states and 859 transitions. [2020-10-19 20:07:52,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 301 [2020-10-19 20:07:52,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 308 [2020-10-19 20:07:52,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 646 states and 859 transitions. [2020-10-19 20:07:52,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:52,873 INFO L691 BuchiCegarLoop]: Abstraction has 646 states and 859 transitions. [2020-10-19 20:07:52,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states and 859 transitions. [2020-10-19 20:07:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 625. [2020-10-19 20:07:52,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-10-19 20:07:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 829 transitions. [2020-10-19 20:07:52,930 INFO L714 BuchiCegarLoop]: Abstraction has 625 states and 829 transitions. [2020-10-19 20:07:52,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:52,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 20:07:52,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-19 20:07:52,931 INFO L87 Difference]: Start difference. First operand 625 states and 829 transitions. Second operand 14 states. [2020-10-19 20:07:53,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:53,188 INFO L93 Difference]: Finished difference Result 234 states and 284 transitions. [2020-10-19 20:07:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-19 20:07:53,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 234 states and 284 transitions. [2020-10-19 20:07:53,194 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2020-10-19 20:07:53,197 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 234 states to 219 states and 269 transitions. [2020-10-19 20:07:53,197 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2020-10-19 20:07:53,198 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2020-10-19 20:07:53,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 269 transitions. [2020-10-19 20:07:53,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:53,198 INFO L691 BuchiCegarLoop]: Abstraction has 219 states and 269 transitions. [2020-10-19 20:07:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 269 transitions. [2020-10-19 20:07:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 199. [2020-10-19 20:07:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-19 20:07:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 245 transitions. [2020-10-19 20:07:53,206 INFO L714 BuchiCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-10-19 20:07:53,206 INFO L594 BuchiCegarLoop]: Abstraction has 199 states and 245 transitions. [2020-10-19 20:07:53,207 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-10-19 20:07:53,207 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 199 states and 245 transitions. [2020-10-19 20:07:53,209 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 18 [2020-10-19 20:07:53,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:53,209 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:53,210 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:53,211 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:53,211 INFO L794 eck$LassoCheckResult]: Stem: 4497#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4496#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 4466#L39 call main_#t~ret11 := fibo1(main_~x~0);< 4467#fibo1ENTRY ~n := #in~n; 4550#L10 assume !(~n < 1); 4488#L12 assume !(1 == ~n); 4483#L15 call #t~ret7 := fibo2(~n - 1);< 4567#fibo2ENTRY ~n := #in~n; 4512#L20 assume !(~n < 1); 4513#L22 assume !(1 == ~n); 4454#L25 call #t~ret9 := fibo1(~n - 1);< 4484#fibo1ENTRY ~n := #in~n; 4499#L10 assume !(~n < 1); 4556#L12 assume !(1 == ~n); 4547#L15 call #t~ret7 := fibo2(~n - 1);< 4548#fibo2ENTRY ~n := #in~n; 4555#L20 assume !(~n < 1); 4554#L22 assume 1 == ~n;#res := 1; 4553#fibo2FINAL assume true; 4546#fibo2EXIT >#52#return; 4544#L15-1 call #t~ret8 := fibo2(~n - 2);< 4545#fibo2ENTRY ~n := #in~n; 4551#L20 assume ~n < 1;#res := 0; 4549#fibo2FINAL assume true; 4543#fibo2EXIT >#54#return; 4542#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4541#fibo1FINAL assume true; 4538#fibo1EXIT >#48#return; 4526#L25-1 call #t~ret10 := fibo1(~n - 2);< 4495#fibo1ENTRY ~n := #in~n; 4531#L10 assume !(~n < 1); 4529#L12 assume !(1 == ~n); 4494#L15 call #t~ret7 := fibo2(~n - 1);< 4522#fibo2ENTRY ~n := #in~n; 4520#L20 assume !(~n < 1); 4518#L22 assume !(1 == ~n); 4476#L25 call #t~ret9 := fibo1(~n - 1);< 4613#fibo1ENTRY ~n := #in~n; 4635#L10 assume !(~n < 1); 4558#L12 assume !(1 == ~n); 4442#L15 call #t~ret7 := fibo2(~n - 1);< 4500#fibo2ENTRY [2020-10-19 20:07:53,211 INFO L796 eck$LassoCheckResult]: Loop: 4500#fibo2ENTRY ~n := #in~n; 4598#L20 assume !(~n < 1); 4560#L22 assume !(1 == ~n); 4469#L25 call #t~ret9 := fibo1(~n - 1);< 4482#fibo1ENTRY ~n := #in~n; 4638#L10 assume !(~n < 1); 4633#L12 assume !(1 == ~n); 4443#L15 call #t~ret7 := fibo2(~n - 1);< 4500#fibo2ENTRY [2020-10-19 20:07:53,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:53,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1779459932, now seen corresponding path program 1 times [2020-10-19 20:07:53,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:53,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890523664] [2020-10-19 20:07:53,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:53,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:53,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 20:07:53,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890523664] [2020-10-19 20:07:53,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122000893] [2020-10-19 20:07:53,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:53,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 20:07:53,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-19 20:07:53,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:53,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-10-19 20:07:53,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532251831] [2020-10-19 20:07:53,402 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:53,402 INFO L82 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2020-10-19 20:07:53,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:53,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651260529] [2020-10-19 20:07:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:53,405 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:53,407 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:53,408 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:53,500 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:53,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:53,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:53,501 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:53,501 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:53,501 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,501 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:53,502 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:53,502 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2020-10-19 20:07:53,503 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:53,503 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:53,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,601 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:53,601 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,608 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,608 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,632 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,632 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,657 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,657 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,681 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,684 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,684 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,710 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,710 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,741 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,741 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:53,768 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,768 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:53,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,791 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,794 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:53,794 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:53,817 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:53,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:53,842 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,898 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:53,902 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:53,902 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:53,902 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:53,902 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:53,902 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:53,903 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,903 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:53,903 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:53,903 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2020-10-19 20:07:53,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:53,903 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:53,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:53,986 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:53,986 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:53,992 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:53,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:53,994 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:53,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:53,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:53,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:53,995 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:53,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:53,996 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:54,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:54,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:54,019 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:54,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:54,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:54,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:54,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:54,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:54,028 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:54,079 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:54,080 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:54,080 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:54,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:54,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:54,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:54,082 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:54,082 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:54,090 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:54,128 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:54,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:54,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:54,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:54,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:54,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:54,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:54,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:54,142 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:54,175 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:54,177 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:54,177 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:54,177 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:54,177 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:54,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:54,178 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:54,178 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:54,180 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:54,203 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:54,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:54,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:54,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:54,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:54,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:54,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:54,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:54,209 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:54,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:54,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:54,233 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:54,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:54,233 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:54,233 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:54,234 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:54,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:54,235 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:54,260 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:54,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:54,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:54,262 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:54,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:54,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:54,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:54,263 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:54,264 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:54,291 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:54,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:54,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:54,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:54,293 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:54,293 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:54,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:54,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:54,295 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:54,330 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:54,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:54,332 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:54,333 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:54,333 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:54,333 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:54,334 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:54,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:54,337 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:54,340 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-19 20:07:54,340 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:54,343 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:54,343 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:54,343 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:54,343 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2020-10-19 20:07:54,365 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,465 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:54,547 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 [2020-10-19 20:07:54,548 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51 Second operand 7 states. [2020-10-19 20:07:54,699 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51. Second operand 7 states. Result 223 states and 270 transitions. Complement of second has 21 states. [2020-10-19 20:07:54,703 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 [2020-10-19 20:07:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 20:07:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-10-19 20:07:54,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 41 letters. Loop has 8 letters. [2020-10-19 20:07:54,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:54,704 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:54,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 20:07:54,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:54,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:54,870 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 [2020-10-19 20:07:54,870 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51 Second operand 7 states. [2020-10-19 20:07:55,016 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51. Second operand 7 states. Result 223 states and 270 transitions. Complement of second has 21 states. [2020-10-19 20:07:55,017 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 [2020-10-19 20:07:55,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 20:07:55,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2020-10-19 20:07:55,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 41 letters. Loop has 8 letters. [2020-10-19 20:07:55,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:55,018 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-19 20:07:55,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:55,110 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:55,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 20:07:55,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:55,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 20:07:55,197 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 [2020-10-19 20:07:55,197 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51 Second operand 7 states. [2020-10-19 20:07:55,394 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 199 states and 245 transitions. cyclomatic complexity: 51. Second operand 7 states. Result 401 states and 472 transitions. Complement of second has 25 states. [2020-10-19 20:07:55,397 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 [2020-10-19 20:07:55,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-10-19 20:07:55,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2020-10-19 20:07:55,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 41 letters. Loop has 8 letters. [2020-10-19 20:07:55,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:55,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 49 letters. Loop has 8 letters. [2020-10-19 20:07:55,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:55,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 41 letters. Loop has 16 letters. [2020-10-19 20:07:55,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:55,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 401 states and 472 transitions. [2020-10-19 20:07:55,408 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 34 [2020-10-19 20:07:55,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 401 states to 297 states and 362 transitions. [2020-10-19 20:07:55,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 171 [2020-10-19 20:07:55,412 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 185 [2020-10-19 20:07:55,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 297 states and 362 transitions. [2020-10-19 20:07:55,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:55,413 INFO L691 BuchiCegarLoop]: Abstraction has 297 states and 362 transitions. [2020-10-19 20:07:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states and 362 transitions. [2020-10-19 20:07:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 272. [2020-10-19 20:07:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-19 20:07:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-10-19 20:07:55,421 INFO L714 BuchiCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-10-19 20:07:55,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:55,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-19 20:07:55,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-19 20:07:55,422 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 13 states. [2020-10-19 20:07:55,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:55,650 INFO L93 Difference]: Finished difference Result 304 states and 372 transitions. [2020-10-19 20:07:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-19 20:07:55,651 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 304 states and 372 transitions. [2020-10-19 20:07:55,654 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-10-19 20:07:55,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 304 states to 302 states and 370 transitions. [2020-10-19 20:07:55,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 192 [2020-10-19 20:07:55,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 192 [2020-10-19 20:07:55,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 302 states and 370 transitions. [2020-10-19 20:07:55,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:55,660 INFO L691 BuchiCegarLoop]: Abstraction has 302 states and 370 transitions. [2020-10-19 20:07:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states and 370 transitions. [2020-10-19 20:07:55,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 277. [2020-10-19 20:07:55,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-19 20:07:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 336 transitions. [2020-10-19 20:07:55,668 INFO L714 BuchiCegarLoop]: Abstraction has 277 states and 336 transitions. [2020-10-19 20:07:55,668 INFO L594 BuchiCegarLoop]: Abstraction has 277 states and 336 transitions. [2020-10-19 20:07:55,669 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-10-19 20:07:55,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 336 transitions. [2020-10-19 20:07:55,671 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-10-19 20:07:55,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:55,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:55,673 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:55,673 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:55,674 INFO L794 eck$LassoCheckResult]: Stem: 6854#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 6844#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 6824#L39 call main_#t~ret11 := fibo1(main_~x~0);< 6825#fibo1ENTRY ~n := #in~n; 6911#L10 assume !(~n < 1); 6910#L12 assume !(1 == ~n); 6906#L15 call #t~ret7 := fibo2(~n - 1);< 6909#fibo2ENTRY ~n := #in~n; 6908#L20 assume !(~n < 1); 6907#L22 assume !(1 == ~n); 6882#L25 call #t~ret9 := fibo1(~n - 1);< 6883#fibo1ENTRY ~n := #in~n; 6905#L10 assume !(~n < 1); 6902#L12 assume !(1 == ~n); 6878#L15 call #t~ret7 := fibo2(~n - 1);< 6891#fibo2ENTRY ~n := #in~n; 6892#L20 assume !(~n < 1); 7049#L22 assume !(1 == ~n); 7043#L25 call #t~ret9 := fibo1(~n - 1);< 7044#fibo1ENTRY ~n := #in~n; 7050#L10 assume !(~n < 1); 7048#L12 assume 1 == ~n;#res := 1; 7046#fibo1FINAL assume true; 7042#fibo1EXIT >#48#return; 7028#L25-1 call #t~ret10 := fibo1(~n - 2);< 7029#fibo1ENTRY ~n := #in~n; 7033#L10 assume ~n < 1;#res := 0; 7032#fibo1FINAL assume true; 7027#fibo1EXIT >#50#return; 7024#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 7019#fibo2FINAL assume true; 7015#fibo2EXIT >#52#return; 6972#L15-1 call #t~ret8 := fibo2(~n - 2);< 6973#fibo2ENTRY ~n := #in~n; 6981#L20 assume ~n < 1;#res := 0; 6980#fibo2FINAL assume true; 6971#fibo2EXIT >#54#return; 6969#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6968#fibo1FINAL assume true; 6962#fibo1EXIT >#48#return; 6850#L25-1 call #t~ret10 := fibo1(~n - 2);< 6952#fibo1ENTRY [2020-10-19 20:07:55,674 INFO L796 eck$LassoCheckResult]: Loop: 6952#fibo1ENTRY ~n := #in~n; 6946#L10 assume !(~n < 1); 6948#L12 assume !(1 == ~n); 6848#L15 call #t~ret7 := fibo2(~n - 1);< 6852#fibo2ENTRY ~n := #in~n; 6974#L20 assume !(~n < 1); 6970#L22 assume !(1 == ~n); 6960#L25 call #t~ret9 := fibo1(~n - 1);< 6966#fibo1ENTRY ~n := #in~n; 6979#L10 assume !(~n < 1); 6978#L12 assume !(1 == ~n); 6965#L15 call #t~ret7 := fibo2(~n - 1);< 6975#fibo2ENTRY ~n := #in~n; 6976#L20 assume !(~n < 1); 7011#L22 assume !(1 == ~n); 7010#L25 call #t~ret9 := fibo1(~n - 1);< 7035#fibo1ENTRY ~n := #in~n; 7038#L10 assume !(~n < 1); 7037#L12 assume 1 == ~n;#res := 1; 7036#fibo1FINAL assume true; 7034#fibo1EXIT >#48#return; 7022#L25-1 call #t~ret10 := fibo1(~n - 2);< 7023#fibo1ENTRY ~n := #in~n; 7031#L10 assume ~n < 1;#res := 0; 7030#fibo1FINAL assume true; 7021#fibo1EXIT >#50#return; 7018#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 7014#fibo2FINAL assume true; 6991#fibo2EXIT >#52#return; 6987#L15-1 call #t~ret8 := fibo2(~n - 2);< 6989#fibo2ENTRY ~n := #in~n; 7001#L20 assume ~n < 1;#res := 0; 7000#fibo2FINAL assume true; 6985#fibo2EXIT >#54#return; 6983#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6964#fibo1FINAL assume true; 6963#fibo1EXIT >#48#return; 6851#L25-1 call #t~ret10 := fibo1(~n - 2);< 6952#fibo1ENTRY [2020-10-19 20:07:55,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:55,675 INFO L82 PathProgramCache]: Analyzing trace with hash -205691575, now seen corresponding path program 1 times [2020-10-19 20:07:55,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:55,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965324471] [2020-10-19 20:07:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:55,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-19 20:07:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 20:07:55,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965324471] [2020-10-19 20:07:55,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032747658] [2020-10-19 20:07:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-19 20:07:55,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:55,912 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-19 20:07:55,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:55,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2020-10-19 20:07:55,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126255458] [2020-10-19 20:07:55,913 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-19 20:07:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:55,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1309552832, now seen corresponding path program 1 times [2020-10-19 20:07:55,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:55,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905610294] [2020-10-19 20:07:55,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-19 20:07:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:55,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-19 20:07:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-19 20:07:56,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905610294] [2020-10-19 20:07:56,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210743181] [2020-10-19 20:07:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 20:07:56,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-19 20:07:56,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:56,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 11 [2020-10-19 20:07:56,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235756621] [2020-10-19 20:07:56,099 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-19 20:07:56,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:07:56,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-19 20:07:56,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-19 20:07:56,100 INFO L87 Difference]: Start difference. First operand 277 states and 336 transitions. cyclomatic complexity: 64 Second operand 11 states. [2020-10-19 20:07:56,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:07:56,312 INFO L93 Difference]: Finished difference Result 321 states and 393 transitions. [2020-10-19 20:07:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 20:07:56,313 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 321 states and 393 transitions. [2020-10-19 20:07:56,316 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-10-19 20:07:56,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 321 states to 319 states and 391 transitions. [2020-10-19 20:07:56,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 208 [2020-10-19 20:07:56,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2020-10-19 20:07:56,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 319 states and 391 transitions. [2020-10-19 20:07:56,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:07:56,322 INFO L691 BuchiCegarLoop]: Abstraction has 319 states and 391 transitions. [2020-10-19 20:07:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states and 391 transitions. [2020-10-19 20:07:56,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 287. [2020-10-19 20:07:56,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-19 20:07:56,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 351 transitions. [2020-10-19 20:07:56,332 INFO L714 BuchiCegarLoop]: Abstraction has 287 states and 351 transitions. [2020-10-19 20:07:56,332 INFO L594 BuchiCegarLoop]: Abstraction has 287 states and 351 transitions. [2020-10-19 20:07:56,332 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-10-19 20:07:56,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 287 states and 351 transitions. [2020-10-19 20:07:56,334 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2020-10-19 20:07:56,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-19 20:07:56,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-19 20:07:56,336 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:56,336 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 20:07:56,337 INFO L794 eck$LassoCheckResult]: Stem: 7838#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7833#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 7813#L39 call main_#t~ret11 := fibo1(main_~x~0);< 7814#fibo1ENTRY ~n := #in~n; 7880#L10 assume !(~n < 1); 7879#L12 assume !(1 == ~n); 7875#L15 call #t~ret7 := fibo2(~n - 1);< 7878#fibo2ENTRY ~n := #in~n; 7877#L20 assume !(~n < 1); 7876#L22 assume !(1 == ~n); 7865#L25 call #t~ret9 := fibo1(~n - 1);< 7867#fibo1ENTRY ~n := #in~n; 7873#L10 assume !(~n < 1); 7872#L12 assume !(1 == ~n); 7862#L15 call #t~ret7 := fibo2(~n - 1);< 7870#fibo2ENTRY ~n := #in~n; 7871#L20 assume !(~n < 1); 7993#L22 assume !(1 == ~n); 7991#L25 call #t~ret9 := fibo1(~n - 1);< 7992#fibo1ENTRY ~n := #in~n; 8004#L10 assume !(~n < 1); 7999#L12 assume 1 == ~n;#res := 1; 7994#fibo1FINAL assume true; 7990#fibo1EXIT >#48#return; 7982#L25-1 call #t~ret10 := fibo1(~n - 2);< 7983#fibo1ENTRY ~n := #in~n; 7989#L10 assume ~n < 1;#res := 0; 7988#fibo1FINAL assume true; 7981#fibo1EXIT >#50#return; 7979#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret10;havoc #t~ret9; 7978#fibo2FINAL assume true; 7977#fibo2EXIT >#52#return; 7974#L15-1 call #t~ret8 := fibo2(~n - 2);< 7975#fibo2ENTRY ~n := #in~n; 8009#L20 assume !(~n < 1); 8008#L22 assume 1 == ~n;#res := 1; 8007#fibo2FINAL assume true; 7973#fibo2EXIT >#54#return; 7959#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 7956#fibo1FINAL assume true; 7954#fibo1EXIT >#48#return; 7935#L25-1 call #t~ret10 := fibo1(~n - 2);< 7942#fibo1ENTRY [2020-10-19 20:07:56,337 INFO L796 eck$LassoCheckResult]: Loop: 7942#fibo1ENTRY ~n := #in~n; 7943#L10 assume !(~n < 1); 7934#L12 assume !(1 == ~n); 7795#L15 call #t~ret7 := fibo2(~n - 1);< 7932#fibo2ENTRY ~n := #in~n; 7843#L20 assume !(~n < 1); 7794#L22 assume !(1 == ~n); 7797#L25 call #t~ret9 := fibo1(~n - 1);< 7958#fibo1ENTRY ~n := #in~n; 7976#L10 assume !(~n < 1); 7972#L12 assume !(1 == ~n); 7796#L15 call #t~ret7 := fibo2(~n - 1);< 7841#fibo2ENTRY ~n := #in~n; 7842#L20 assume !(~n < 1); 8002#L22 assume 1 == ~n;#res := 1; 7998#fibo2FINAL assume true; 7986#fibo2EXIT >#52#return; 7964#L15-1 call #t~ret8 := fibo2(~n - 2);< 7966#fibo2ENTRY ~n := #in~n; 7995#L20 assume ~n < 1;#res := 0; 7996#fibo2FINAL assume true; 8044#fibo2EXIT >#54#return; 7965#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 8043#fibo1FINAL assume true; 7952#fibo1EXIT >#48#return; 7936#L25-1 call #t~ret10 := fibo1(~n - 2);< 7942#fibo1ENTRY [2020-10-19 20:07:56,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:56,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1129557662, now seen corresponding path program 1 times [2020-10-19 20:07:56,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:56,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352395231] [2020-10-19 20:07:56,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:56,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:56,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:56,362 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:56,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:56,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1552659165, now seen corresponding path program 1 times [2020-10-19 20:07:56,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:56,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902698165] [2020-10-19 20:07:56,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:56,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 20:07:56,371 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 20:07:56,373 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 20:07:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:56,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1204019970, now seen corresponding path program 1 times [2020-10-19 20:07:56,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 20:07:56,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641249770] [2020-10-19 20:07:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 20:07:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-19 20:07:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-19 20:07:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-19 20:07:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-19 20:07:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-19 20:07:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-19 20:07:56,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641249770] [2020-10-19 20:07:56,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264796414] [2020-10-19 20:07:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 20:07:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:56,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 20:07:56,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 41 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-19 20:07:56,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 20:07:56,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2020-10-19 20:07:56,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127094696] [2020-10-19 20:07:56,897 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:56,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:56,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:56,898 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:56,898 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-19 20:07:56,898 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:56,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:56,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration8_Loop [2020-10-19 20:07:56,899 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:56,899 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:56,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:56,978 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:56,979 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:56,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:56,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:56,984 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:56,984 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:57,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:57,010 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:57,010 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:57,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:57,036 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:57,036 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:57,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:57,067 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:57,067 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,091 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:57,091 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:57,093 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:57,094 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:57,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:57,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:57,119 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:57,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:57,167 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,170 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:57,170 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:57,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:57,197 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-19 20:07:57,197 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-19 20:07:57,222 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-19 20:07:57,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-19 20:07:57,252 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-19 20:07:57,283 INFO L210 LassoAnalysis]: Preferences: [2020-10-19 20:07:57,283 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-19 20:07:57,283 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-19 20:07:57,283 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-19 20:07:57,283 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-19 20:07:57,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-19 20:07:57,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-19 20:07:57,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration8_Loop [2020-10-19 20:07:57,284 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-19 20:07:57,284 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-19 20:07:57,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-19 20:07:57,351 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-19 20:07:57,351 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,354 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:57,356 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:57,356 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:57,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:57,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:57,356 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:57,357 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:57,357 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:57,358 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,379 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:57,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:57,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:57,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:57,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:57,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:57,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:57,381 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:57,383 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,404 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:57,405 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:57,405 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:57,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:57,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:57,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:57,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:57,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:57,407 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,429 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:57,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:57,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:57,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:57,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:57,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:57,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:57,432 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:57,433 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,455 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:57,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:57,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:57,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:57,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:57,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:57,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:57,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:57,458 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:57,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:57,482 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:57,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:57,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:57,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:57,483 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:57,483 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:57,484 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,509 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:57,510 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:57,510 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:57,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:57,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:57,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:57,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:57,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:57,512 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-19 20:07:57,535 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:57,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:57,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:57,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:57,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:57,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:57,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:57,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:57,540 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,563 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-19 20:07:57,564 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-19 20:07:57,564 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-19 20:07:57,564 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-19 20:07:57,564 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-19 20:07:57,564 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-19 20:07:57,565 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-19 20:07:57,565 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-19 20:07:57,567 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-19 20:07:57,571 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-19 20:07:57,571 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-19 20:07:57,577 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-19 20:07:57,577 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-19 20:07:57,578 INFO L510 LassoAnalysis]: Proved termination. [2020-10-19 20:07:57,578 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2020-10-19 20:07:57,598 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-19 20:07:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:57,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 20:07:57,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:57,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:57,698 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:57,700 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:57,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:57,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 20:07:57,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:57,873 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 [2020-10-19 20:07:57,873 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-10-19 20:07:58,149 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 494 states and 593 transitions. Complement of second has 16 states. [2020-10-19 20:07:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2020-10-19 20:07:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:07:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 42 transitions. [2020-10-19 20:07:58,150 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 42 transitions. Stem has 42 letters. Loop has 26 letters. [2020-10-19 20:07:58,151 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:58,151 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:58,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:58,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 20:07:58,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:58,237 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,242 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,245 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:58,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 20:07:58,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:58,439 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-19 20:07:58,439 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-10-19 20:07:59,020 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 670 states and 816 transitions. Complement of second has 41 states. [2020-10-19 20:07:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2020-10-19 20:07:59,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:07:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 58 transitions. [2020-10-19 20:07:59,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 58 transitions. Stem has 42 letters. Loop has 26 letters. [2020-10-19 20:07:59,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:59,023 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:59,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:59,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 20:07:59,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:59,132 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:59,135 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:59,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:59,140 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:59,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 20:07:59,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:59,320 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 10 loop predicates [2020-10-19 20:07:59,320 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-10-19 20:07:59,604 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 542 states and 647 transitions. Complement of second has 15 states. [2020-10-19 20:07:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2020-10-19 20:07:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:07:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 46 transitions. [2020-10-19 20:07:59,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 46 transitions. Stem has 42 letters. Loop has 26 letters. [2020-10-19 20:07:59,607 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:07:59,607 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-10-19 20:07:59,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 20:07:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:59,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-19 20:07:59,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:59,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:59,693 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:59,695 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:59,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-19 20:07:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 20:07:59,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-19 20:07:59,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 20:07:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-19 20:07:59,857 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2020-10-19 20:07:59,857 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69 Second operand 12 states. [2020-10-19 20:08:00,435 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 287 states and 351 transitions. cyclomatic complexity: 69. Second operand 12 states. Result 752 states and 919 transitions. Complement of second has 45 states. [2020-10-19 20:08:00,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2020-10-19 20:08:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-19 20:08:00,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 62 transitions. [2020-10-19 20:08:00,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 42 letters. Loop has 26 letters. [2020-10-19 20:08:00,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:08:00,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 68 letters. Loop has 26 letters. [2020-10-19 20:08:00,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:08:00,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 42 letters. Loop has 52 letters. [2020-10-19 20:08:00,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-19 20:08:00,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 752 states and 919 transitions. [2020-10-19 20:08:00,449 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2020-10-19 20:08:00,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 752 states to 483 states and 610 transitions. [2020-10-19 20:08:00,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 205 [2020-10-19 20:08:00,456 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 262 [2020-10-19 20:08:00,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 483 states and 610 transitions. [2020-10-19 20:08:00,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-19 20:08:00,457 INFO L691 BuchiCegarLoop]: Abstraction has 483 states and 610 transitions. [2020-10-19 20:08:00,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states and 610 transitions. [2020-10-19 20:08:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 397. [2020-10-19 20:08:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-19 20:08:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 484 transitions. [2020-10-19 20:08:00,471 INFO L714 BuchiCegarLoop]: Abstraction has 397 states and 484 transitions. [2020-10-19 20:08:00,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 20:08:00,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-19 20:08:00,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-19 20:08:00,472 INFO L87 Difference]: Start difference. First operand 397 states and 484 transitions. Second operand 14 states. [2020-10-19 20:08:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 20:08:00,808 INFO L93 Difference]: Finished difference Result 180 states and 204 transitions. [2020-10-19 20:08:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-19 20:08:00,810 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 204 transitions. [2020-10-19 20:08:00,812 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:08:00,812 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 0 states and 0 transitions. [2020-10-19 20:08:00,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-19 20:08:00,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-19 20:08:00,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-19 20:08:00,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-19 20:08:00,813 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:08:00,813 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:08:00,813 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 20:08:00,814 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-10-19 20:08:00,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-19 20:08:00,814 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-19 20:08:00,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-19 20:08:00,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.10 08:08:00 BoogieIcfgContainer [2020-10-19 20:08:00,822 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-19 20:08:00,823 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 20:08:00,823 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 20:08:00,823 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 20:08:00,824 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 08:07:44" (3/4) ... [2020-10-19 20:08:00,827 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 20:08:00,828 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 20:08:00,830 INFO L168 Benchmark]: Toolchain (without parser) took 17546.96 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 403.7 MB). Free memory was 958.6 MB in the beginning and 836.2 MB in the end (delta: 122.4 MB). Peak memory consumption was 526.1 MB. Max. memory is 11.5 GB. [2020-10-19 20:08:00,831 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:08:00,831 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.20 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-10-19 20:08:00,832 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2020-10-19 20:08:00,833 INFO L168 Benchmark]: Boogie Preprocessor took 35.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2020-10-19 20:08:00,833 INFO L168 Benchmark]: RCFGBuilder took 318.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2020-10-19 20:08:00,834 INFO L168 Benchmark]: BuchiAutomizer took 16812.82 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 270.0 MB). Free memory was 1.1 GB in the beginning and 836.2 MB in the end (delta: 261.8 MB). Peak memory consumption was 531.8 MB. Max. memory is 11.5 GB. [2020-10-19 20:08:00,834 INFO L168 Benchmark]: Witness Printer took 5.27 ms. Allocated memory is still 1.4 GB. Free memory is still 836.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-10-19 20:08:00,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.20 ms. Allocated memory is still 1.0 GB. Free memory was 958.6 MB in the beginning and 947.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 92.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 318.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 16812.82 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 270.0 MB). Free memory was 1.1 GB in the beginning and 836.2 MB in the end (delta: 261.8 MB). Peak memory consumption was 531.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.27 ms. Allocated memory is still 1.4 GB. Free memory is still 836.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (7 trivial, 3 deterministic, 2 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 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function \old(n) and consists of 11 locations. 7 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.7s and 9 iterations. TraceHistogramMax:8. Analysis of lassos took 8.7s. Construction of modules took 2.1s. Büchi inclusion checks took 5.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 270 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 287 states and ocurred in iteration 7. Nontrivial modules had stage [3, 0, 1, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/19 HoareTripleCheckerStatistics: 373 SDtfs, 861 SDslu, 911 SDs, 0 SdLazy, 2367 SolverSat, 418 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI3 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf84 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf91 smp84 dnf100 smp100 tf111 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 33 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...