./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_7-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f4b24e32 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_7-2.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 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 16:01:03,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 16:01:03,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 16:01:03,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 16:01:03,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 16:01:03,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 16:01:03,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 16:01:03,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 16:01:03,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 16:01:03,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 16:01:03,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 16:01:03,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 16:01:03,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 16:01:03,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 16:01:03,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 16:01:03,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 16:01:03,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 16:01:03,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 16:01:03,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 16:01:03,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 16:01:03,809 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 16:01:03,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 16:01:03,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 16:01:03,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 16:01:03,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 16:01:03,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 16:01:03,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 16:01:03,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 16:01:03,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 16:01:03,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 16:01:03,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 16:01:03,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 16:01:03,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 16:01:03,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 16:01:03,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 16:01:03,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 16:01:03,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 16:01:03,822 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 16:01:03,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 16:01:03,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 16:01:03,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 16:01:03,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 16:01:03,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-14 16:01:03,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 16:01:03,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 16:01:03,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 16:01:03,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 16:01:03,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 16:01:03,845 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 16:01:03,845 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 16:01:03,846 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-14 16:01:03,846 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-14 16:01:03,846 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-14 16:01:03,846 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-14 16:01:03,846 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-14 16:01:03,847 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-14 16:01:03,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 16:01:03,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-14 16:01:03,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-14 16:01:03,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 16:01:03,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-14 16:01:03,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 16:01:03,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-14 16:01:03,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-14 16:01:03,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-14 16:01:03,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-14 16:01:03,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 16:01:03,849 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-14 16:01:03,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 16:01:03,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-14 16:01:03,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 16:01:03,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 16:01:03,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 16:01:03,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 16:01:03,851 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-14 16:01:03,851 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 [2022-07-14 16:01:04,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 16:01:04,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 16:01:04,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 16:01:04,078 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 16:01:04,079 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 16:01:04,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_7-2.c [2022-07-14 16:01:04,143 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68186971/a912072bba0d4dfba1ab9e937f83f001/FLAG97605907e [2022-07-14 16:01:04,447 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 16:01:04,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2022-07-14 16:01:04,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68186971/a912072bba0d4dfba1ab9e937f83f001/FLAG97605907e [2022-07-14 16:01:04,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68186971/a912072bba0d4dfba1ab9e937f83f001 [2022-07-14 16:01:04,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 16:01:04,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 16:01:04,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 16:01:04,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 16:01:04,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 16:01:04,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 04:01:04" (1/1) ... [2022-07-14 16:01:04,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e28f87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:04, skipping insertion in model container [2022-07-14 16:01:04,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 04:01:04" (1/1) ... [2022-07-14 16:01:04,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 16:01:04,905 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 16:01:05,054 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_7-2.c[741,754] [2022-07-14 16:01:05,055 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 16:01:05,065 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 16:01:05,082 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_7-2.c[741,754] [2022-07-14 16:01:05,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 16:01:05,097 INFO L208 MainTranslator]: Completed translation [2022-07-14 16:01:05,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05 WrapperNode [2022-07-14 16:01:05,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 16:01:05,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 16:01:05,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 16:01:05,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 16:01:05,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,127 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-07-14 16:01:05,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 16:01:05,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 16:01:05,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 16:01:05,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 16:01:05,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 16:01:05,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 16:01:05,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 16:01:05,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 16:01:05,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (1/1) ... [2022-07-14 16:01:05,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:05,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:05,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:05,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-14 16:01:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 16:01:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 16:01:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 16:01:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-14 16:01:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-07-14 16:01:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-07-14 16:01:05,270 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 16:01:05,272 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 16:01:05,333 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 16:01:05,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 16:01:05,338 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 16:01:05,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:01:05 BoogieIcfgContainer [2022-07-14 16:01:05,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 16:01:05,341 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-14 16:01:05,341 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-14 16:01:05,344 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-14 16:01:05,344 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 16:01:05,345 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.07 04:01:04" (1/3) ... [2022-07-14 16:01:05,346 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ad2bd66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 04:01:05, skipping insertion in model container [2022-07-14 16:01:05,346 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 16:01:05,346 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 04:01:05" (2/3) ... [2022-07-14 16:01:05,346 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ad2bd66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.07 04:01:05, skipping insertion in model container [2022-07-14 16:01:05,346 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-14 16:01:05,346 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:01:05" (3/3) ... [2022-07-14 16:01:05,348 INFO L354 chiAutomizerObserver]: Analyzing ICFG fibo_7-2.c [2022-07-14 16:01:05,393 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-14 16:01:05,393 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-14 16:01:05,393 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-14 16:01:05,393 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-14 16:01:05,394 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-14 16:01:05,394 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-14 16:01:05,394 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-14 16:01:05,394 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-14 16:01:05,397 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) [2022-07-14 16:01:05,414 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-14 16:01:05,415 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:01:05,415 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:01:05,421 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-14 16:01:05,421 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 16:01:05,421 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-14 16:01:05,421 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) [2022-07-14 16:01:05,424 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-14 16:01:05,424 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:01:05,424 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:01:05,425 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-14 16:01:05,425 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-14 16:01:05,430 INFO L752 eck$LassoCheckResult]: Stem: 3#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); 12#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 := 7; 5#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 6#fiboENTRYtrue [2022-07-14 16:01:05,431 INFO L754 eck$LassoCheckResult]: Loop: 6#fiboENTRYtrue ~n := #in~n; 7#L8true assume !(~n < 1); 9#L10true assume !(1 == ~n); 14#L13true call #t~ret4 := fibo(~n - 1);< 6#fiboENTRYtrue [2022-07-14 16:01:05,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:05,436 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-07-14 16:01:05,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:05,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605161460] [2022-07-14 16:01:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:05,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:05,555 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:01:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:05,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:01:05,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:05,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-07-14 16:01:05,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:05,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92137310] [2022-07-14 16:01:05,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:05,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:05,612 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:01:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:05,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:01:05,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:05,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-07-14 16:01:05,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:05,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025730686] [2022-07-14 16:01:05,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:05,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:05,652 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:01:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:05,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:01:05,808 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 16:01:05,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 16:01:05,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 16:01:05,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 16:01:05,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 16:01:05,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:05,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 16:01:05,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 16:01:05,811 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2022-07-14 16:01:05,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 16:01:05,811 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 16:01:05,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:05,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:05,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:05,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:05,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:05,901 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 16:01:05,902 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 16:01:05,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:05,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:05,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:05,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-14 16:01:05,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 16:01:05,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:05,943 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 16:01:05,943 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 16:01:05,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:05,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:05,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:05,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:05,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-14 16:01:05,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 16:01:05,975 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:05,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 16:01:05,993 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 16:01:06,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:06,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:06,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:06,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:06,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-14 16:01:06,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 16:01:06,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:06,071 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 16:01:06,072 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 16:01:06,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:06,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:06,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:06,101 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:06,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-14 16:01:06,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 16:01:06,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:06,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:06,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:06,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:06,149 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:06,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-14 16:01:06,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 16:01:06,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:06,213 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 16:01:06,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:06,223 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 16:01:06,223 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 16:01:06,223 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 16:01:06,224 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 16:01:06,224 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 16:01:06,224 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:06,224 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 16:01:06,224 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 16:01:06,224 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2022-07-14 16:01:06,224 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 16:01:06,224 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 16:01:06,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:06,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:06,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:06,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:06,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:06,285 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 16:01:06,289 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 16:01:06,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:06,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:06,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:06,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-14 16:01:06,296 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 16:01:06,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:01:06,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 16:01:06,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:01:06,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:01:06,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:01:06,305 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 16:01:06,305 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 16:01:06,313 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 16:01:06,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-07-14 16:01:06,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:06,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:06,330 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:06,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-14 16:01:06,337 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 16:01:06,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:01:06,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 16:01:06,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:01:06,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:01:06,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:01:06,346 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 16:01:06,346 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 16:01:06,359 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 16:01:06,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:06,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:06,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:06,377 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:06,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-14 16:01:06,380 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 16:01:06,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:01:06,388 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 16:01:06,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:01:06,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:01:06,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:01:06,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 16:01:06,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 16:01:06,403 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 16:01:06,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:06,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:06,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:06,421 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:06,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-14 16:01:06,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 16:01:06,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:01:06,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 16:01:06,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:01:06,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:01:06,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:01:06,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 16:01:06,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 16:01:06,442 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 16:01:06,445 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 16:01:06,445 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 16:01:06,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:06,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:06,447 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:06,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-14 16:01:06,449 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 16:01:06,449 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 16:01:06,449 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 16:01:06,449 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-07-14 16:01:06,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:06,468 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 16:01:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:06,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 16:01:06,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:06,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 16:01:06,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 16:01:06,581 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-14 16:01:06,582 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 16:01:06,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:06,686 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First 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). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-07-14 16:01:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-14 16:01:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-14 16:01:06,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-07-14 16:01:06,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-07-14 16:01:06,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:06,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-07-14 16:01:06,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:06,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-07-14 16:01:06,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:06,696 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-07-14 16:01:06,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-14 16:01:06,705 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-07-14 16:01:06,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-07-14 16:01:06,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-07-14 16:01:06,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-07-14 16:01:06,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 16:01:06,707 INFO L369 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-07-14 16:01:06,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-07-14 16:01:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-07-14 16:01:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-14 16:01:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-07-14 16:01:06,727 INFO L392 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-07-14 16:01:06,727 INFO L374 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-07-14 16:01:06,727 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-14 16:01:06,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-07-14 16:01:06,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-14 16:01:06,728 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:01:06,728 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:01:06,729 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 16:01:06,729 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 16:01:06,729 INFO L752 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 123#L-1 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 := 7; 128#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 132#fiboENTRY ~n := #in~n; 133#L8 assume !(~n < 1); 138#L10 assume !(1 == ~n); 127#L13 call #t~ret4 := fibo(~n - 1);< 129#fiboENTRY ~n := #in~n; 134#L8 assume ~n < 1;#res := 0; 135#fiboFINAL assume true; 136#fiboEXIT >#33#return; 125#L13-1 [2022-07-14 16:01:06,730 INFO L754 eck$LassoCheckResult]: Loop: 125#L13-1 call #t~ret5 := fibo(~n - 2);< 126#fiboENTRY ~n := #in~n; 141#L8 assume !(~n < 1); 140#L10 assume !(1 == ~n); 124#L13 call #t~ret4 := fibo(~n - 1);< 126#fiboENTRY ~n := #in~n; 141#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 139#fiboEXIT >#33#return; 125#L13-1 [2022-07-14 16:01:06,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:06,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-07-14 16:01:06,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:06,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654958448] [2022-07-14 16:01:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:06,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 16:01:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 16:01:06,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 16:01:06,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654958448] [2022-07-14 16:01:06,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654958448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 16:01:06,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 16:01:06,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 16:01:06,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061519017] [2022-07-14 16:01:06,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 16:01:06,800 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 16:01:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-07-14 16:01:06,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:06,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70248276] [2022-07-14 16:01:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:06,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:06,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 16:01:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:06,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-14 16:01:06,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 16:01:06,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70248276] [2022-07-14 16:01:06,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70248276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 16:01:06,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 16:01:06,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 16:01:06,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570824871] [2022-07-14 16:01:06,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 16:01:06,839 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-14 16:01:06,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 16:01:06,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 16:01:06,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-14 16:01:06,843 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-14 16:01:06,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 16:01:06,894 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-07-14 16:01:06,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 16:01:06,896 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-07-14 16:01:06,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-14 16:01:06,898 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-07-14 16:01:06,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-07-14 16:01:06,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-07-14 16:01:06,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-07-14 16:01:06,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 16:01:06,899 INFO L369 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-07-14 16:01:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-07-14 16:01:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-14 16:01:06,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 16:01:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-07-14 16:01:06,902 INFO L392 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-07-14 16:01:06,902 INFO L374 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-07-14 16:01:06,903 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-14 16:01:06,903 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-07-14 16:01:06,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-14 16:01:06,904 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:01:06,904 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:01:06,904 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 16:01:06,904 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-07-14 16:01:06,905 INFO L752 eck$LassoCheckResult]: Stem: 195#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 196#L-1 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 := 7; 201#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 205#fiboENTRY ~n := #in~n; 207#L8 assume !(~n < 1); 211#L10 assume !(1 == ~n); 200#L13 call #t~ret4 := fibo(~n - 1);< 202#fiboENTRY ~n := #in~n; 208#L8 assume !(~n < 1); 210#L10 assume 1 == ~n;#res := 1; 212#fiboFINAL assume true; 214#fiboEXIT >#33#return; 198#L13-1 [2022-07-14 16:01:06,905 INFO L754 eck$LassoCheckResult]: Loop: 198#L13-1 call #t~ret5 := fibo(~n - 2);< 199#fiboENTRY ~n := #in~n; 217#L8 assume !(~n < 1); 215#L10 assume !(1 == ~n); 197#L13 call #t~ret4 := fibo(~n - 1);< 199#fiboENTRY ~n := #in~n; 217#L8 assume !(~n < 1); 215#L10 assume 1 == ~n;#res := 1; 216#fiboFINAL assume true; 213#fiboEXIT >#33#return; 198#L13-1 [2022-07-14 16:01:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:06,905 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-07-14 16:01:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:06,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143557417] [2022-07-14 16:01:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:06,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-14 16:01:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 16:01:06,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 16:01:06,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143557417] [2022-07-14 16:01:06,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143557417] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 16:01:06,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679703610] [2022-07-14 16:01:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:06,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 16:01:06,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:06,961 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 16:01:06,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-14 16:01:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:06,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 16:01:06,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 16:01:07,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 16:01:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 16:01:07,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679703610] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 16:01:07,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 16:01:07,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-14 16:01:07,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371874205] [2022-07-14 16:01:07,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 16:01:07,146 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 16:01:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-07-14 16:01:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:07,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091463921] [2022-07-14 16:01:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:07,163 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:01:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:07,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:01:07,295 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 16:01:07,295 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 16:01:07,295 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 16:01:07,295 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 16:01:07,296 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 16:01:07,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:07,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 16:01:07,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 16:01:07,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2022-07-14 16:01:07,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 16:01:07,299 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 16:01:07,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:07,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:07,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:07,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:07,346 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 16:01:07,346 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 16:01:07,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:07,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:07,352 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:07,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 16:01:07,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:07,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-14 16:01:07,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 16:01:07,373 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 16:01:07,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:07,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:07,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:07,400 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:07,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 16:01:07,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:07,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-14 16:01:07,435 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 16:01:07,436 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 16:01:07,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:07,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:07,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:07,462 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:07,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-14 16:01:07,465 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 16:01:07,465 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:07,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:07,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:07,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:07,509 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:07,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-14 16:01:07,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 16:01:07,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:08,313 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 16:01:08,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:08,317 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 16:01:08,317 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 16:01:08,317 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 16:01:08,317 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 16:01:08,317 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 16:01:08,317 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:08,317 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 16:01:08,317 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 16:01:08,317 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2022-07-14 16:01:08,317 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 16:01:08,317 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 16:01:08,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:08,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:08,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:08,339 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:08,372 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 16:01:08,372 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 16:01:08,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:08,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:08,374 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:08,380 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 16:01:08,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:01:08,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 16:01:08,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:01:08,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:01:08,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:01:08,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-14 16:01:08,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 16:01:08,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 16:01:08,402 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 16:01:08,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:08,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:08,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:08,419 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:08,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-14 16:01:08,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 16:01:08,426 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:01:08,426 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 16:01:08,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:01:08,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:01:08,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:01:08,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 16:01:08,427 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 16:01:08,428 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-14 16:01:08,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:08,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:08,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:08,445 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:08,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-14 16:01:08,496 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 16:01:08,503 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:01:08,503 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 16:01:08,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:01:08,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:01:08,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:01:08,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 16:01:08,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 16:01:08,508 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 16:01:08,514 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 16:01:08,514 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 16:01:08,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:08,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:08,516 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:08,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-14 16:01:08,520 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 16:01:08,520 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 16:01:08,520 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 16:01:08,520 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-07-14 16:01:08,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:08,536 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 16:01:08,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:08,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 16:01:08,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:08,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 16:01:08,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:08,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 16:01:08,698 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-07-14 16:01:08,699 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 16:01:08,879 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2022-07-14 16:01:08,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-07-14 16:01:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 16:01:08,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-07-14 16:01:08,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-07-14 16:01:08,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:08,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-07-14 16:01:08,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:08,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-07-14 16:01:08,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:08,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-07-14 16:01:08,897 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-07-14 16:01:08,905 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-07-14 16:01:08,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-07-14 16:01:08,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-07-14 16:01:08,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-07-14 16:01:08,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 16:01:08,906 INFO L369 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-07-14 16:01:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-07-14 16:01:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-07-14 16:01:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2022-07-14 16:01:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-07-14 16:01:08,929 INFO L392 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-07-14 16:01:08,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 16:01:08,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 16:01:08,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-14 16:01:08,931 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-14 16:01:09,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 16:01:09,041 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-07-14 16:01:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-14 16:01:09,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-07-14 16:01:09,057 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-07-14 16:01:09,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-07-14 16:01:09,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-07-14 16:01:09,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-07-14 16:01:09,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-07-14 16:01:09,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 16:01:09,061 INFO L369 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-07-14 16:01:09,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-07-14 16:01:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-07-14 16:01:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2022-07-14 16:01:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-07-14 16:01:09,069 INFO L392 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-07-14 16:01:09,069 INFO L374 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-07-14 16:01:09,069 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-14 16:01:09,069 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-07-14 16:01:09,071 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-07-14 16:01:09,071 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:01:09,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:01:09,073 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 16:01:09,073 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2022-07-14 16:01:09,073 INFO L752 eck$LassoCheckResult]: Stem: 789#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 790#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 804#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 806#fiboENTRY ~n := #in~n; 854#L8 assume !(~n < 1); 853#L10 assume !(1 == ~n); 803#L13 call #t~ret4 := fibo(~n - 1);< 805#fiboENTRY ~n := #in~n; 815#L8 assume !(~n < 1); 820#L10 assume !(1 == ~n); 826#L13 call #t~ret4 := fibo(~n - 1);< 847#fiboENTRY ~n := #in~n; 851#L8 assume !(~n < 1); 849#L10 assume !(1 == ~n); 843#L13 call #t~ret4 := fibo(~n - 1);< 847#fiboENTRY ~n := #in~n; 851#L8 assume !(~n < 1); 849#L10 assume !(1 == ~n); 843#L13 call #t~ret4 := fibo(~n - 1);< 847#fiboENTRY ~n := #in~n; 852#L8 assume !(~n < 1); 850#L10 assume 1 == ~n;#res := 1; 848#fiboFINAL assume true; 846#fiboEXIT >#33#return; 792#L13-1 call #t~ret5 := fibo(~n - 2);< 844#fiboENTRY ~n := #in~n; 892#L8 assume ~n < 1;#res := 0; 891#fiboFINAL assume true; 890#fiboEXIT >#35#return; 889#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 887#fiboFINAL assume true; 879#fiboEXIT >#33#return; 824#L13-1 [2022-07-14 16:01:09,073 INFO L754 eck$LassoCheckResult]: Loop: 824#L13-1 call #t~ret5 := fibo(~n - 2);< 802#fiboENTRY ~n := #in~n; 884#L8 assume !(~n < 1); 821#L10 assume !(1 == ~n); 822#L13 call #t~ret4 := fibo(~n - 1);< 802#fiboENTRY ~n := #in~n; 884#L8 assume !(~n < 1); 821#L10 assume !(1 == ~n); 822#L13 call #t~ret4 := fibo(~n - 1);< 802#fiboENTRY ~n := #in~n; 884#L8 assume !(~n < 1); 821#L10 assume 1 == ~n;#res := 1; 825#fiboFINAL assume true; 876#fiboEXIT >#33#return; 824#L13-1 call #t~ret5 := fibo(~n - 2);< 802#fiboENTRY ~n := #in~n; 884#L8 assume !(~n < 1); 821#L10 assume !(1 == ~n); 822#L13 call #t~ret4 := fibo(~n - 1);< 802#fiboENTRY ~n := #in~n; 884#L8 assume !(~n < 1); 821#L10 assume 1 == ~n;#res := 1; 825#fiboFINAL assume true; 876#fiboEXIT >#33#return; 824#L13-1 call #t~ret5 := fibo(~n - 2);< 802#fiboENTRY ~n := #in~n; 884#L8 assume ~n < 1;#res := 0; 885#fiboFINAL assume true; 883#fiboEXIT >#35#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#35#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#33#return; 824#L13-1 [2022-07-14 16:01:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:09,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-07-14 16:01:09,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:09,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201805837] [2022-07-14 16:01:09,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:09,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-14 16:01:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 16:01:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 16:01:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,221 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 16:01:09,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 16:01:09,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201805837] [2022-07-14 16:01:09,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201805837] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 16:01:09,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155307144] [2022-07-14 16:01:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:09,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 16:01:09,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:09,223 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 16:01:09,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-14 16:01:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 16:01:09,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:09,320 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-14 16:01:09,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 16:01:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-14 16:01:09,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155307144] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 16:01:09,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 16:01:09,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 18 [2022-07-14 16:01:09,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187568357] [2022-07-14 16:01:09,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 16:01:09,508 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-14 16:01:09,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:09,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1616897917, now seen corresponding path program 1 times [2022-07-14 16:01:09,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:09,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492925483] [2022-07-14 16:01:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:09,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-14 16:01:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 16:01:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 16:01:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 16:01:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 16:01:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-14 16:01:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 16:01:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492925483] [2022-07-14 16:01:09,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492925483] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 16:01:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245948986] [2022-07-14 16:01:09,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:09,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 16:01:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:09,605 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 16:01:09,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-14 16:01:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:09,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 16:01:09,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-14 16:01:09,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 16:01:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-14 16:01:09,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245948986] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 16:01:09,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 16:01:09,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-07-14 16:01:09,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034655171] [2022-07-14 16:01:09,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 16:01:09,817 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-14 16:01:09,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 16:01:09,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-14 16:01:09,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-07-14 16:01:09,818 INFO L87 Difference]: Start difference. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 11 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-14 16:01:10,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 16:01:10,097 INFO L93 Difference]: Finished difference Result 146 states and 193 transitions. [2022-07-14 16:01:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 16:01:10,099 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146 states and 193 transitions. [2022-07-14 16:01:10,104 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2022-07-14 16:01:10,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146 states to 139 states and 186 transitions. [2022-07-14 16:01:10,113 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2022-07-14 16:01:10,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2022-07-14 16:01:10,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 186 transitions. [2022-07-14 16:01:10,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 16:01:10,115 INFO L369 hiAutomatonCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-07-14 16:01:10,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states and 186 transitions. [2022-07-14 16:01:10,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-07-14 16:01:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 92 states have internal predecessors, (101), 33 states have call successors, (34), 17 states have call predecessors, (34), 20 states have return successors, (51), 29 states have call predecessors, (51), 30 states have call successors, (51) [2022-07-14 16:01:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2022-07-14 16:01:10,127 INFO L392 hiAutomatonCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-07-14 16:01:10,127 INFO L374 stractBuchiCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-07-14 16:01:10,127 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-14 16:01:10,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 186 transitions. [2022-07-14 16:01:10,128 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2022-07-14 16:01:10,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-14 16:01:10,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-14 16:01:10,129 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 16:01:10,129 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-07-14 16:01:10,129 INFO L752 eck$LassoCheckResult]: Stem: 1564#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1565#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 1579#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1580#fiboENTRY ~n := #in~n; 1640#L8 assume !(~n < 1); 1600#L10 assume !(1 == ~n); 1577#L13 call #t~ret4 := fibo(~n - 1);< 1589#fiboENTRY ~n := #in~n; 1590#L8 assume !(~n < 1); 1597#L10 assume !(1 == ~n); 1576#L13 call #t~ret4 := fibo(~n - 1);< 1578#fiboENTRY ~n := #in~n; 1639#L8 assume !(~n < 1); 1638#L10 assume !(1 == ~n); 1634#L13 call #t~ret4 := fibo(~n - 1);< 1637#fiboENTRY ~n := #in~n; 1636#L8 assume !(~n < 1); 1635#L10 assume !(1 == ~n); 1621#L13 call #t~ret4 := fibo(~n - 1);< 1627#fiboENTRY ~n := #in~n; 1633#L8 assume !(~n < 1); 1632#L10 assume !(1 == ~n); 1622#L13 call #t~ret4 := fibo(~n - 1);< 1627#fiboENTRY ~n := #in~n; 1633#L8 assume !(~n < 1); 1632#L10 assume !(1 == ~n); 1622#L13 call #t~ret4 := fibo(~n - 1);< 1627#fiboENTRY ~n := #in~n; 1631#L8 assume !(~n < 1); 1630#L10 assume 1 == ~n;#res := 1; 1628#fiboFINAL assume true; 1626#fiboEXIT >#33#return; 1567#L13-1 call #t~ret5 := fibo(~n - 2);< 1623#fiboENTRY ~n := #in~n; 1642#L8 assume ~n < 1;#res := 0; 1688#fiboFINAL assume true; 1686#fiboEXIT >#35#return; 1682#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1680#fiboFINAL assume true; 1663#fiboEXIT >#33#return; 1583#L13-1 [2022-07-14 16:01:10,129 INFO L754 eck$LassoCheckResult]: Loop: 1583#L13-1 call #t~ret5 := fibo(~n - 2);< 1575#fiboENTRY ~n := #in~n; 1588#L8 assume !(~n < 1); 1598#L10 assume !(1 == ~n); 1587#L13 call #t~ret4 := fibo(~n - 1);< 1575#fiboENTRY ~n := #in~n; 1588#L8 assume !(~n < 1); 1598#L10 assume !(1 == ~n); 1587#L13 call #t~ret4 := fibo(~n - 1);< 1575#fiboENTRY ~n := #in~n; 1588#L8 assume !(~n < 1); 1598#L10 assume 1 == ~n;#res := 1; 1599#fiboFINAL assume true; 1693#fiboEXIT >#33#return; 1668#L13-1 call #t~ret5 := fibo(~n - 2);< 1678#fiboENTRY ~n := #in~n; 1702#L8 assume ~n < 1;#res := 0; 1641#fiboFINAL assume true; 1694#fiboEXIT >#35#return; 1591#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1699#fiboFINAL assume true; 1664#fiboEXIT >#33#return; 1583#L13-1 [2022-07-14 16:01:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:10,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1856310800, now seen corresponding path program 2 times [2022-07-14 16:01:10,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:10,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405755356] [2022-07-14 16:01:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:10,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:10,159 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:01:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:10,172 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:01:10,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash 780094678, now seen corresponding path program 2 times [2022-07-14 16:01:10,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:10,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066441669] [2022-07-14 16:01:10,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:10,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:10,189 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-14 16:01:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-14 16:01:10,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-14 16:01:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:10,201 INFO L85 PathProgramCache]: Analyzing trace with hash -705851003, now seen corresponding path program 3 times [2022-07-14 16:01:10,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-14 16:01:10,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039596819] [2022-07-14 16:01:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 16:01:10,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-14 16:01:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-14 16:01:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 16:01:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 16:01:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-14 16:01:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-14 16:01:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:10,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-14 16:01:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 70 proven. 100 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-14 16:01:10,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-14 16:01:10,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039596819] [2022-07-14 16:01:10,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039596819] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-14 16:01:10,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786563346] [2022-07-14 16:01:10,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 16:01:10,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-14 16:01:10,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:10,376 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-14 16:01:10,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-14 16:01:10,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-07-14 16:01:10,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 16:01:10,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-14 16:01:10,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 87 proven. 47 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-14 16:01:10,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 16:01:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 87 proven. 49 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-14 16:01:10,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786563346] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 16:01:10,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-14 16:01:10,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 12] total 27 [2022-07-14 16:01:10,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488121307] [2022-07-14 16:01:10,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-14 16:01:11,036 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 16:01:11,037 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 16:01:11,037 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 16:01:11,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 16:01:11,037 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-14 16:01:11,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:11,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 16:01:11,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 16:01:11,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2022-07-14 16:01:11,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 16:01:11,037 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 16:01:11,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:11,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:11,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:11,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:11,080 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 16:01:11,080 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-14 16:01:11,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:11,083 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:11,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 16:01:11,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:11,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-14 16:01:11,099 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-14 16:01:11,100 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-14 16:01:11,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:11,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:11,116 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:11,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-14 16:01:11,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-14 16:01:11,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:11,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:11,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:11,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:11,152 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:11,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-14 16:01:11,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-14 16:01:11,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-14 16:01:12,106 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-14 16:01:12,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-14 16:01:12,112 INFO L210 LassoAnalysis]: Preferences: [2022-07-14 16:01:12,112 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-14 16:01:12,112 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-14 16:01:12,112 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-14 16:01:12,112 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-14 16:01:12,112 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:12,112 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-14 16:01:12,112 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-14 16:01:12,112 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2022-07-14 16:01:12,112 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-14 16:01:12,112 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-14 16:01:12,113 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:12,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:12,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:12,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-14 16:01:12,156 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-14 16:01:12,157 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-14 16:01:12,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:12,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:12,158 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:12,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-14 16:01:12,161 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-14 16:01:12,167 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-14 16:01:12,167 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-14 16:01:12,167 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-14 16:01:12,167 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-14 16:01:12,167 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-14 16:01:12,169 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-14 16:01:12,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-14 16:01:12,200 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-14 16:01:12,203 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-14 16:01:12,203 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-14 16:01:12,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-14 16:01:12,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 16:01:12,215 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-14 16:01:12,228 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-14 16:01:12,228 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-14 16:01:12,228 INFO L513 LassoAnalysis]: Proved termination. [2022-07-14 16:01:12,228 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-07-14 16:01:12,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-14 16:01:12,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-07-14 16:01:12,248 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-14 16:01:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:12,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 16:01:12,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:12,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:12,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 16:01:12,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 16:01:12,666 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2022-07-14 16:01:12,666 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-14 16:01:12,869 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 272 states and 374 transitions. Complement of second has 45 states. [2022-07-14 16:01:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-07-14 16:01:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-14 16:01:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 41 transitions. [2022-07-14 16:01:12,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 40 letters. Loop has 22 letters. [2022-07-14 16:01:12,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:12,871 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 16:01:12,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:12,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 16:01:12,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:13,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 16:01:13,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 16:01:13,221 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2022-07-14 16:01:13,221 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-14 16:01:13,349 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 333 states and 447 transitions. Complement of second has 25 states. [2022-07-14 16:01:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-07-14 16:01:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-14 16:01:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-07-14 16:01:13,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 40 letters. Loop has 22 letters. [2022-07-14 16:01:13,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:13,350 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-14 16:01:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 16:01:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:13,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 16:01:13,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 16:01:13,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-14 16:01:13,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 16:01:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-14 16:01:13,722 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2022-07-14 16:01:13,722 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-14 16:01:13,940 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1179 states and 1649 transitions. Complement of second has 138 states. [2022-07-14 16:01:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-07-14 16:01:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-07-14 16:01:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 46 transitions. [2022-07-14 16:01:13,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 40 letters. Loop has 22 letters. [2022-07-14 16:01:13,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:13,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 62 letters. Loop has 22 letters. [2022-07-14 16:01:13,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:13,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 40 letters. Loop has 44 letters. [2022-07-14 16:01:13,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-14 16:01:13,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1179 states and 1649 transitions. [2022-07-14 16:01:13,961 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 58 [2022-07-14 16:01:13,973 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1179 states to 679 states and 1031 transitions. [2022-07-14 16:01:13,973 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 271 [2022-07-14 16:01:13,974 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 302 [2022-07-14 16:01:13,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 679 states and 1031 transitions. [2022-07-14 16:01:13,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-14 16:01:13,974 INFO L369 hiAutomatonCegarLoop]: Abstraction has 679 states and 1031 transitions. [2022-07-14 16:01:13,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states and 1031 transitions. [2022-07-14 16:01:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 521. [2022-07-14 16:01:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 317 states have (on average 1.1892744479495267) internal successors, (377), 340 states have internal predecessors, (377), 121 states have call successors, (135), 62 states have call predecessors, (135), 83 states have return successors, (236), 118 states have call predecessors, (236), 115 states have call successors, (236) [2022-07-14 16:01:14,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 748 transitions. [2022-07-14 16:01:14,008 INFO L392 hiAutomatonCegarLoop]: Abstraction has 521 states and 748 transitions. [2022-07-14 16:01:14,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-14 16:01:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-14 16:01:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2022-07-14 16:01:14,010 INFO L87 Difference]: Start difference. First operand 521 states and 748 transitions. Second operand has 27 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 15 states have call successors, (21), 8 states have call predecessors, (21), 6 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) [2022-07-14 16:01:14,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 16:01:14,649 INFO L93 Difference]: Finished difference Result 319 states and 372 transitions. [2022-07-14 16:01:14,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-14 16:01:14,650 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 319 states and 372 transitions. [2022-07-14 16:01:14,653 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 16:01:14,653 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 319 states to 0 states and 0 transitions. [2022-07-14 16:01:14,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-14 16:01:14,653 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-14 16:01:14,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-14 16:01:14,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-14 16:01:14,653 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 16:01:14,653 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 16:01:14,653 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-14 16:01:14,653 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-14 16:01:14,653 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-14 16:01:14,653 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-14 16:01:14,653 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-14 16:01:14,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.07 04:01:14 BoogieIcfgContainer [2022-07-14 16:01:14,660 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-14 16:01:14,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-14 16:01:14,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-14 16:01:14,660 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-14 16:01:14,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:01:05" (3/4) ... [2022-07-14 16:01:14,663 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-14 16:01:14,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-14 16:01:14,664 INFO L158 Benchmark]: Toolchain (without parser) took 9783.69ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 60.5MB in the beginning and 56.5MB in the end (delta: 3.9MB). Peak memory consumption was 43.0MB. Max. memory is 16.1GB. [2022-07-14 16:01:14,664 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 81.8MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 16:01:14,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.89ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 58.9MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-14 16:01:14,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.95ms. Allocated memory is still 81.8MB. Free memory was 58.7MB in the beginning and 57.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 16:01:14,665 INFO L158 Benchmark]: Boogie Preprocessor took 23.40ms. Allocated memory is still 81.8MB. Free memory was 57.4MB in the beginning and 56.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-14 16:01:14,665 INFO L158 Benchmark]: RCFGBuilder took 187.27ms. Allocated memory is still 81.8MB. Free memory was 56.3MB in the beginning and 48.3MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-14 16:01:14,666 INFO L158 Benchmark]: BuchiAutomizer took 9318.53ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 48.1MB in the beginning and 56.5MB in the end (delta: -8.5MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2022-07-14 16:01:14,666 INFO L158 Benchmark]: Witness Printer took 3.05ms. Allocated memory is still 121.6MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 16:01:14,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 81.8MB. Free memory is still 59.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.89ms. Allocated memory is still 81.8MB. Free memory was 60.2MB in the beginning and 58.9MB in the end (delta: 1.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.95ms. Allocated memory is still 81.8MB. Free memory was 58.7MB in the beginning and 57.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.40ms. Allocated memory is still 81.8MB. Free memory was 57.4MB in the beginning and 56.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 187.27ms. Allocated memory is still 81.8MB. Free memory was 56.3MB in the beginning and 48.3MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9318.53ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 48.1MB in the beginning and 56.5MB in the end (delta: -8.5MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * Witness Printer took 3.05ms. Allocated memory is still 121.6MB. Free memory is still 56.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (4 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. 4 modules have a trivial ranking function, the largest among these consists of 27 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.2s and 6 iterations. TraceHistogramMax:8. Analysis of lassos took 5.6s. Construction of modules took 0.7s. Büchi inclusion checks took 2.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 189 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/26 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 453 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 437 mSDsluCounter, 425 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 292 mSDsCounter, 336 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1150 IncrementalHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 336 mSolverCounterUnsat, 133 mSDtfsCounter, 1150 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI2 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp88 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq194 hnf91 smp85 dnf100 smp100 tf109 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-14 16:01:14,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:14,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-14 16:01:15,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-14 16:01:15,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-14 16:01:15,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE