./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.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 557a695617b4e9b94623290cf2a16a969b4f7de0 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 05:44:16,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 05:44:16,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 05:44:16,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 05:44:16,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 05:44:16,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 05:44:16,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 05:44:16,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 05:44:16,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 05:44:16,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 05:44:16,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 05:44:16,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 05:44:16,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 05:44:16,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 05:44:16,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 05:44:16,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 05:44:16,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 05:44:16,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 05:44:16,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 05:44:16,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 05:44:16,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 05:44:16,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 05:44:16,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 05:44:16,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 05:44:16,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 05:44:16,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 05:44:16,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 05:44:16,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 05:44:16,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 05:44:16,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 05:44:16,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 05:44:16,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 05:44:16,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 05:44:16,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 05:44:16,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 05:44:16,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 05:44:16,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 05:44:16,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 05:44:16,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 05:44:16,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 05:44:16,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 05:44:16,345 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-26 05:44:16,405 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 05:44:16,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 05:44:16,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 05:44:16,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 05:44:16,411 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 05:44:16,411 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 05:44:16,412 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 05:44:16,412 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 05:44:16,413 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 05:44:16,413 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 05:44:16,414 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 05:44:16,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 05:44:16,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 05:44:16,415 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 05:44:16,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 05:44:16,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 05:44:16,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 05:44:16,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 05:44:16,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 05:44:16,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 05:44:16,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 05:44:16,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 05:44:16,418 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 05:44:16,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 05:44:16,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 05:44:16,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 05:44:16,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 05:44:16,419 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 05:44:16,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 05:44:16,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 05:44:16,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 05:44:16,420 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 05:44:16,422 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 05:44:16,423 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 557a695617b4e9b94623290cf2a16a969b4f7de0 [2020-10-26 05:44:16,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 05:44:16,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 05:44:16,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 05:44:16,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 05:44:16,914 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 05:44:16,915 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2020-10-26 05:44:16,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59cb2750a/243bcf8b7252491fa01c69ede1809483/FLAG16cfe2fc4 [2020-10-26 05:44:17,688 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 05:44:17,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_2-2.c [2020-10-26 05:44:17,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59cb2750a/243bcf8b7252491fa01c69ede1809483/FLAG16cfe2fc4 [2020-10-26 05:44:18,014 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59cb2750a/243bcf8b7252491fa01c69ede1809483 [2020-10-26 05:44:18,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 05:44:18,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 05:44:18,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 05:44:18,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 05:44:18,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 05:44:18,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22616eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18, skipping insertion in model container [2020-10-26 05:44:18,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 05:44:18,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 05:44:18,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:44:18,273 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 05:44:18,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 05:44:18,309 INFO L208 MainTranslator]: Completed translation [2020-10-26 05:44:18,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18 WrapperNode [2020-10-26 05:44:18,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 05:44:18,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 05:44:18,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 05:44:18,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 05:44:18,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 05:44:18,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 05:44:18,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 05:44:18,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 05:44:18,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (1/1) ... [2020-10-26 05:44:18,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 05:44:18,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 05:44:18,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 05:44:18,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 05:44:18,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (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 [2020-10-26 05:44:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 05:44:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-10-26 05:44:18,456 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-10-26 05:44:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 05:44:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-10-26 05:44:18,456 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-10-26 05:44:18,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 05:44:18,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 05:44:18,691 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 05:44:18,691 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-26 05:44:18,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:44:18 BoogieIcfgContainer [2020-10-26 05:44:18,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 05:44:18,695 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 05:44:18,695 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 05:44:18,699 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 05:44:18,700 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:44:18,700 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 05:44:18" (1/3) ... [2020-10-26 05:44:18,701 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31ca9939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:44:18, skipping insertion in model container [2020-10-26 05:44:18,702 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:44:18,702 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 05:44:18" (2/3) ... [2020-10-26 05:44:18,702 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@31ca9939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 05:44:18, skipping insertion in model container [2020-10-26 05:44:18,703 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 05:44:18,703 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:44:18" (3/3) ... [2020-10-26 05:44:18,705 INFO L373 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_2-2.c [2020-10-26 05:44:18,770 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 05:44:18,771 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 05:44:18,771 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 05:44:18,771 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 05:44:18,771 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 05:44:18,771 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 05:44:18,771 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 05:44:18,772 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 05:44:18,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-10-26 05:44:18,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-26 05:44:18,840 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:44:18,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:44:18,849 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:44:18,849 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 05:44:18,849 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 05:44:18,849 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states. [2020-10-26 05:44:18,853 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-26 05:44:18,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 05:44:18,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 05:44:18,855 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-10-26 05:44:18,855 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 05:44:18,864 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 := 2; 22#L39true call main_#t~ret11 := fibo1(main_~x~0);< 27#fibo1ENTRYtrue [2020-10-26 05:44:18,865 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 [2020-10-26 05:44:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2020-10-26 05:44:18,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:18,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589774016] [2020-10-26 05:44:18,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:19,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:19,045 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:19,088 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:19,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:19,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2020-10-26 05:44:19,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:19,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56216809] [2020-10-26 05:44:19,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:19,133 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 05:44:19,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 05:44:19,157 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 05:44:19,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:19,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2020-10-26 05:44:19,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 05:44:19,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586727808] [2020-10-26 05:44:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 05:44:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:19,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586727808] [2020-10-26 05:44:19,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 05:44:19,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-26 05:44:19,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785974647] [2020-10-26 05:44:19,553 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:19,554 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:19,555 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:19,555 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:19,555 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-26 05:44:19,555 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:19,556 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:19,556 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:19,556 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-2.c_Iteration1_Loop [2020-10-26 05:44:19,556 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:19,557 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:19,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:19,769 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:19,769 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) [2020-10-26 05:44:19,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:19,786 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 [2020-10-26 05:44:19,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:19,801 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) [2020-10-26 05:44:19,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:19,848 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 [2020-10-26 05:44:19,853 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:19,853 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) [2020-10-26 05:44:19,898 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:19,898 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 [2020-10-26 05:44:19,905 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:19,905 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) [2020-10-26 05:44:19,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:19,950 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 [2020-10-26 05:44:19,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:19,954 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) [2020-10-26 05:44:19,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:19,996 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 [2020-10-26 05:44:20,001 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:20,001 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) [2020-10-26 05:44:20,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:20,045 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,054 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:20,054 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) [2020-10-26 05:44:20,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:20,096 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 [2020-10-26 05:44:20,101 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:20,101 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) [2020-10-26 05:44:20,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:20,144 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,147 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-26 05:44:20,148 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) [2020-10-26 05:44:20,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-26 05:44:20,191 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:20,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-26 05:44:20,242 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,317 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-26 05:44:20,320 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 05:44:20,321 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 05:44:20,321 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 05:44:20,321 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 05:44:20,321 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 05:44:20,321 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,321 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 05:44:20,321 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 05:44:20,322 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_2-2.c_Iteration1_Loop [2020-10-26 05:44:20,322 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 05:44:20,322 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 05:44:20,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 05:44:20,459 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 05:44:20,464 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) [2020-10-26 05:44:20,475 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 [2020-10-26 05:44:20,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:20,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:20,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:20,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:20,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:20,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:20,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,485 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) [2020-10-26 05:44:20,520 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 [2020-10-26 05:44:20,522 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:20,523 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:20,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:20,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:20,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:20,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:20,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,526 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 [2020-10-26 05:44:20,556 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 [2020-10-26 05:44:20,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:20,558 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:20,558 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:20,558 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:20,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:20,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:20,560 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:20,571 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 05:44:20,609 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 [2020-10-26 05:44:20,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:20,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:20,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:20,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:20,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:20,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:20,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,615 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) [2020-10-26 05:44:20,653 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 [2020-10-26 05:44:20,654 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:20,655 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:20,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:20,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:20,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:20,656 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:20,656 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,661 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 [2020-10-26 05:44:20,702 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 [2020-10-26 05:44:20,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:20,704 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:20,704 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:20,704 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:20,704 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:20,705 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:20,705 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:20,707 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 [2020-10-26 05:44:20,742 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 [2020-10-26 05:44:20,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:20,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:20,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:20,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:20,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:20,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:20,745 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:20,747 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) [2020-10-26 05:44:20,782 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:20,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:20,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:20,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:20,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:20,787 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:20,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:20,789 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 [2020-10-26 05:44:20,826 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 [2020-10-26 05:44:20,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 05:44:20,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-26 05:44:20,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 05:44:20,828 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 05:44:20,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 05:44:20,831 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-26 05:44:20,831 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-26 05:44:20,842 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 05:44:20,854 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-10-26 05:44:20,854 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) [2020-10-26 05:44:20,873 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-26 05:44:20,873 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-26 05:44:20,873 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 05:44:20,875 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2020-10-26 05:44:20,911 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-26 05:44:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 05:44:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:20,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-26 05:44:20,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 05:44:20,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 05:44:20,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 05:44:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 05:44:21,114 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 [2020-10-26 05:44:21,116 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states. Second operand 6 states. [2020-10-26 05:44:21,401 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. [2020-10-26 05:44:21,402 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 [2020-10-26 05:44:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-10-26 05:44:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2020-10-26 05:44:21,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2020-10-26 05:44:21,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:21,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2020-10-26 05:44:21,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:21,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2020-10-26 05:44:21,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 05:44:21,413 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2020-10-26 05:44:21,424 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-10-26 05:44:21,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2020-10-26 05:44:21,444 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2020-10-26 05:44:21,445 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2020-10-26 05:44:21,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2020-10-26 05:44:21,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-10-26 05:44:21,449 INFO L691 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2020-10-26 05:44:21,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2020-10-26 05:44:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-10-26 05:44:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-26 05:44:21,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2020-10-26 05:44:21,508 INFO L714 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2020-10-26 05:44:21,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 05:44:21,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 05:44:21,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-26 05:44:21,518 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand 8 states. [2020-10-26 05:44:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 05:44:21,646 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-10-26 05:44:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 05:44:21,647 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 18 transitions. [2020-10-26 05:44:21,649 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:44:21,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2020-10-26 05:44:21,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 05:44:21,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 05:44:21,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 05:44:21,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 05:44:21,650 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:44:21,650 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:44:21,650 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 05:44:21,651 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 05:44:21,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 05:44:21,651 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 05:44:21,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 05:44:21,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 05:44:21 BoogieIcfgContainer [2020-10-26 05:44:21,660 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 05:44:21,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 05:44:21,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 05:44:21,662 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 05:44:21,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 05:44:18" (3/4) ... [2020-10-26 05:44:21,666 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 05:44:21,667 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 05:44:21,670 INFO L168 Benchmark]: Toolchain (without parser) took 3645.71 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 20.0 MB in the beginning and 37.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:21,671 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 28.9 MB in the beginning and 28.9 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:44:21,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.33 ms. Allocated memory is still 41.9 MB. Free memory was 19.4 MB in the beginning and 23.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:21,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.71 ms. Allocated memory is still 41.9 MB. Free memory was 23.4 MB in the beginning and 22.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:44:21,679 INFO L168 Benchmark]: Boogie Preprocessor took 23.34 ms. Allocated memory is still 41.9 MB. Free memory was 22.0 MB in the beginning and 21.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:21,680 INFO L168 Benchmark]: RCFGBuilder took 318.57 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 21.0 MB in the beginning and 28.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:21,683 INFO L168 Benchmark]: BuchiAutomizer took 2965.36 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 37.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2020-10-26 05:44:21,684 INFO L168 Benchmark]: Witness Printer took 5.32 ms. Allocated memory is still 60.8 MB. Free memory was 37.5 MB in the beginning and 37.1 MB in the end (delta: 421.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 05:44:21,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 41.9 MB. Free memory was 28.9 MB in the beginning and 28.9 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.33 ms. Allocated memory is still 41.9 MB. Free memory was 19.4 MB in the beginning and 23.4 MB in the end (delta: -4.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.71 ms. Allocated memory is still 41.9 MB. Free memory was 23.4 MB in the beginning and 22.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.34 ms. Allocated memory is still 41.9 MB. Free memory was 22.0 MB in the beginning and 21.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 318.57 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 21.0 MB in the beginning and 28.7 MB in the end (delta: -7.7 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2965.36 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 37.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.32 ms. Allocated memory is still 60.8 MB. Free memory was 37.5 MB in the beginning and 37.1 MB in the end (delta: 421.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 16 SDtfs, 41 SDslu, 38 SDs, 0 SdLazy, 122 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax100 hnf78 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq177 hnf96 smp51 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...