./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3a877d22 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_5-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 17:20:00,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 17:20:00,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 17:20:00,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 17:20:00,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 17:20:00,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 17:20:00,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 17:20:00,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 17:20:00,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 17:20:00,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 17:20:00,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 17:20:00,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 17:20:00,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 17:20:00,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 17:20:00,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 17:20:00,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 17:20:00,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 17:20:00,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 17:20:00,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 17:20:00,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 17:20:00,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 17:20:00,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 17:20:00,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 17:20:00,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 17:20:00,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 17:20:00,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 17:20:00,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 17:20:00,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 17:20:00,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 17:20:00,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 17:20:00,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 17:20:00,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 17:20:00,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 17:20:00,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 17:20:00,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 17:20:00,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 17:20:00,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 17:20:00,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 17:20:00,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 17:20:00,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 17:20:00,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 17:20:00,574 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-15 17:20:00,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 17:20:00,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 17:20:00,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 17:20:00,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 17:20:00,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 17:20:00,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 17:20:00,598 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 17:20:00,599 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-15 17:20:00,599 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-15 17:20:00,599 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-15 17:20:00,599 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-15 17:20:00,600 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-15 17:20:00,600 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-15 17:20:00,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 17:20:00,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 17:20:00,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 17:20:00,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 17:20:00,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 17:20:00,601 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 17:20:00,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-15 17:20:00,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-15 17:20:00,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-15 17:20:00,601 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 17:20:00,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 17:20:00,602 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-15 17:20:00,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 17:20:00,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-15 17:20:00,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 17:20:00,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 17:20:00,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 17:20:00,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 17:20:00,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 17:20:00,603 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-15 17:20:00,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 [2021-12-15 17:20:00,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 17:20:00,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 17:20:00,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 17:20:00,838 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 17:20:00,840 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 17:20:00,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2021-12-15 17:20:00,882 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc46917a/aba187fbaa414d0a84c5b766f333b3ee/FLAGf0d7e9d64 [2021-12-15 17:20:01,270 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 17:20:01,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2021-12-15 17:20:01,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc46917a/aba187fbaa414d0a84c5b766f333b3ee/FLAGf0d7e9d64 [2021-12-15 17:20:01,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc46917a/aba187fbaa414d0a84c5b766f333b3ee [2021-12-15 17:20:01,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 17:20:01,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 17:20:01,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 17:20:01,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 17:20:01,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 17:20:01,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e17f975 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01, skipping insertion in model container [2021-12-15 17:20:01,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 17:20:01,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 17:20:01,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c[740,753] [2021-12-15 17:20:01,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:20:01,467 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 17:20:01,477 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-1.c[740,753] [2021-12-15 17:20:01,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 17:20:01,490 INFO L208 MainTranslator]: Completed translation [2021-12-15 17:20:01,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01 WrapperNode [2021-12-15 17:20:01,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 17:20:01,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 17:20:01,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 17:20:01,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 17:20:01,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,514 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-15 17:20:01,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 17:20:01,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 17:20:01,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 17:20:01,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 17:20:01,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 17:20:01,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 17:20:01,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 17:20:01,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 17:20:01,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (1/1) ... [2021-12-15 17:20:01,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-15 17:20:01,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 17:20:01,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-15 17:20:01,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-15 17:20:01,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 17:20:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 17:20:01,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 17:20:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 17:20:01,589 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2021-12-15 17:20:01,589 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2021-12-15 17:20:01,634 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 17:20:01,636 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 17:20:01,708 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 17:20:01,712 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 17:20:01,713 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 17:20:01,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:20:01 BoogieIcfgContainer [2021-12-15 17:20:01,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 17:20:01,716 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-15 17:20:01,716 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-15 17:20:01,719 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-15 17:20:01,720 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:20:01,720 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.12 05:20:01" (1/3) ... [2021-12-15 17:20:01,721 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a8f319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:20:01, skipping insertion in model container [2021-12-15 17:20:01,721 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:20:01,721 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:20:01" (2/3) ... [2021-12-15 17:20:01,721 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a8f319a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.12 05:20:01, skipping insertion in model container [2021-12-15 17:20:01,721 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-15 17:20:01,721 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:20:01" (3/3) ... [2021-12-15 17:20:01,723 INFO L388 chiAutomizerObserver]: Analyzing ICFG fibo_5-1.c [2021-12-15 17:20:01,760 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-15 17:20:01,760 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-15 17:20:01,761 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-15 17:20:01,761 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-15 17:20:01,761 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-15 17:20:01,761 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-15 17:20:01,761 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-15 17:20:01,761 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-15 17:20:01,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 17:20:01,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:20:01,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:20:01,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:20:01,801 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-15 17:20:01,801 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-15 17:20:01,801 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-15 17:20:01,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 17:20:01,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-15 17:20:01,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-15 17:20:01,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-15 17:20:01,805 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-15 17:20:01,805 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-15 17:20:01,811 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 6#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 7#fiboENTRYtrue [2021-12-15 17:20:01,811 INFO L793 eck$LassoCheckResult]: Loop: 7#fiboENTRYtrue ~n := #in~n; 8#L8true assume !(~n < 1); 10#L10true assume !(1 == ~n); 15#L13true call #t~ret4 := fibo(~n - 1);< 7#fiboENTRYtrue [2021-12-15 17:20:01,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 17:20:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2021-12-15 17:20:01,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 17:20:01,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376013899] [2021-12-15 17:20:01,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 17:20:01,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 17:20:01,875 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkFeasibilityAndComputeInterpolants(LassoCheck.java:924) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.checkStemFeasibility(LassoCheck.java:879) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck$LassoCheckResult.(LassoCheck.java:794) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.LassoCheck.(LassoCheck.java:252) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:457) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 17:20:01,879 INFO L158 Benchmark]: Toolchain (without parser) took 581.84ms. Allocated memory is still 130.0MB. Free memory was 99.8MB in the beginning and 86.6MB in the end (delta: 13.1MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2021-12-15 17:20:01,879 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 94.4MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 44.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:20:01,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.09ms. Allocated memory is still 130.0MB. Free memory was 99.8MB in the beginning and 107.0MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:20:01,881 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.44ms. Allocated memory is still 130.0MB. Free memory was 107.0MB in the beginning and 105.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 17:20:01,881 INFO L158 Benchmark]: Boogie Preprocessor took 14.83ms. Allocated memory is still 130.0MB. Free memory was 105.6MB in the beginning and 104.8MB in the end (delta: 824.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 17:20:01,882 INFO L158 Benchmark]: RCFGBuilder took 183.25ms. Allocated memory is still 130.0MB. Free memory was 104.8MB in the beginning and 96.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 17:20:01,882 INFO L158 Benchmark]: BuchiAutomizer took 161.43ms. Allocated memory is still 130.0MB. Free memory was 96.1MB in the beginning and 86.6MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-15 17:20:01,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 94.4MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 44.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.09ms. Allocated memory is still 130.0MB. Free memory was 99.8MB in the beginning and 107.0MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.44ms. Allocated memory is still 130.0MB. Free memory was 107.0MB in the beginning and 105.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.83ms. Allocated memory is still 130.0MB. Free memory was 105.6MB in the beginning and 104.8MB in the end (delta: 824.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 183.25ms. Allocated memory is still 130.0MB. Free memory was 104.8MB in the beginning and 96.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 161.43ms. Allocated memory is still 130.0MB. Free memory was 96.1MB in the beginning and 86.6MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 17:20:01,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*32bit*_Bitvector*.epf No suitable settings file found using Termination*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable