./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c 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_7-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 04:20:36,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 04:20:36,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 04:20:36,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 04:20:36,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 04:20:36,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 04:20:36,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 04:20:36,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 04:20:36,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 04:20:36,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 04:20:36,230 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 04:20:36,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 04:20:36,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 04:20:36,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 04:20:36,234 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 04:20:36,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 04:20:36,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 04:20:36,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 04:20:36,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 04:20:36,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 04:20:36,245 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 04:20:36,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 04:20:36,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 04:20:36,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 04:20:36,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 04:20:36,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 04:20:36,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 04:20:36,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 04:20:36,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 04:20:36,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 04:20:36,257 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 04:20:36,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 04:20:36,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 04:20:36,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 04:20:36,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 04:20:36,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 04:20:36,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 04:20:36,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 04:20:36,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 04:20:36,262 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 04:20:36,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 04:20:36,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 04:20:36,264 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-13 04:20:36,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 04:20:36,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 04:20:36,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 04:20:36,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 04:20:36,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 04:20:36,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 04:20:36,289 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 04:20:36,289 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 04:20:36,290 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 04:20:36,290 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 04:20:36,290 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 04:20:36,290 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 04:20:36,291 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 04:20:36,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 04:20:36,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 04:20:36,291 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 04:20:36,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 04:20:36,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 04:20:36,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 04:20:36,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 04:20:36,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 04:20:36,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 04:20:36,292 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 04:20:36,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 04:20:36,292 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 04:20:36,292 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 04:20:36,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 04:20:36,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 04:20:36,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 04:20:36,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 04:20:36,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 04:20:36,294 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 04:20:36,294 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb [2022-07-13 04:20:36,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 04:20:36,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 04:20:36,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 04:20:36,521 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 04:20:36,521 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 04:20:36,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-07-13 04:20:36,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e97e1d6/57eae163a39f42068a22d1e74488c27d/FLAGc5e25f921 [2022-07-13 04:20:36,936 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 04:20:36,936 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2022-07-13 04:20:36,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e97e1d6/57eae163a39f42068a22d1e74488c27d/FLAGc5e25f921 [2022-07-13 04:20:37,395 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17e97e1d6/57eae163a39f42068a22d1e74488c27d [2022-07-13 04:20:37,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 04:20:37,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 04:20:37,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 04:20:37,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 04:20:37,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 04:20:37,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417ab246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37, skipping insertion in model container [2022-07-13 04:20:37,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 04:20:37,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 04:20:37,580 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_7-1.c[741,754] [2022-07-13 04:20:37,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 04:20:37,591 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 04:20:37,600 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_7-1.c[741,754] [2022-07-13 04:20:37,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 04:20:37,613 INFO L208 MainTranslator]: Completed translation [2022-07-13 04:20:37,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37 WrapperNode [2022-07-13 04:20:37,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 04:20:37,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 04:20:37,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 04:20:37,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 04:20:37,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,639 INFO L137 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-07-13 04:20:37,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 04:20:37,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 04:20:37,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 04:20:37,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 04:20:37,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 04:20:37,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 04:20:37,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 04:20:37,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 04:20:37,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (1/1) ... [2022-07-13 04:20:37,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:37,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:37,681 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) [2022-07-13 04:20:37,683 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 [2022-07-13 04:20:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 04:20:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 04:20:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 04:20:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 04:20:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-07-13 04:20:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-07-13 04:20:37,781 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 04:20:37,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 04:20:37,875 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 04:20:37,879 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 04:20:37,879 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 04:20:37,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:20:37 BoogieIcfgContainer [2022-07-13 04:20:37,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 04:20:37,881 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 04:20:37,881 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 04:20:37,883 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 04:20:37,884 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 04:20:37,884 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 04:20:37" (1/3) ... [2022-07-13 04:20:37,885 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65147451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 04:20:37, skipping insertion in model container [2022-07-13 04:20:37,885 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 04:20:37,885 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 04:20:37" (2/3) ... [2022-07-13 04:20:37,885 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65147451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 04:20:37, skipping insertion in model container [2022-07-13 04:20:37,885 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 04:20:37,885 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:20:37" (3/3) ... [2022-07-13 04:20:37,887 INFO L354 chiAutomizerObserver]: Analyzing ICFG fibo_7-1.c [2022-07-13 04:20:37,941 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 04:20:37,959 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 04:20:37,959 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 04:20:37,959 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 04:20:37,959 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 04:20:37,959 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 04:20:37,960 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 04:20:37,960 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 04:20:37,963 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) [2022-07-13 04:20:37,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-13 04:20:37,995 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:37,995 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:37,999 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 04:20:38,006 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-13 04:20:38,006 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 04:20:38,006 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) [2022-07-13 04:20:38,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-13 04:20:38,008 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:38,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:38,008 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 04:20:38,008 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-13 04:20:38,012 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 [2022-07-13 04:20:38,013 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 [2022-07-13 04:20:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:38,020 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-07-13 04:20:38,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:38,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137412648] [2022-07-13 04:20:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:38,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:38,090 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:38,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:38,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:38,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-07-13 04:20:38,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:38,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011582832] [2022-07-13 04:20:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:38,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:38,128 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:38,135 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:38,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:38,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-07-13 04:20:38,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:38,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406996090] [2022-07-13 04:20:38,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:38,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:38,152 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:38,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:38,260 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:38,261 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:38,261 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:38,261 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:38,261 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:38,261 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,261 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:38,261 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:38,262 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration1_Loop [2022-07-13 04:20:38,262 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:38,262 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:38,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,277 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,340 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:38,340 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:38,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,360 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) [2022-07-13 04:20:38,376 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 [2022-07-13 04:20:38,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:38,378 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:38,397 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:38,397 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:38,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-07-13 04:20:38,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,423 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) [2022-07-13 04:20:38,425 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 [2022-07-13 04:20:38,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:38,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:38,444 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:38,444 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:38,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-07-13 04:20:38,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,464 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) [2022-07-13 04:20:38,465 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 [2022-07-13 04:20:38,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:38,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:38,475 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:38,476 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:38,494 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 [2022-07-13 04:20:38,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,496 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) [2022-07-13 04:20:38,498 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 [2022-07-13 04:20:38,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:38,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:38,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-07-13 04:20:38,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,538 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) [2022-07-13 04:20:38,547 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 [2022-07-13 04:20:38,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:38,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:38,613 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:38,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-07-13 04:20:38,617 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:38,617 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:38,617 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:38,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:38,617 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:38,617 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,617 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:38,617 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:38,617 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration1_Loop [2022-07-13 04:20:38,617 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:38,618 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:38,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:38,660 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:38,663 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:38,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,673 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) [2022-07-13 04:20:38,675 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 [2022-07-13 04:20:38,677 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 [2022-07-13 04:20:38,682 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:38,683 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:38,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:38,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:38,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:38,684 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:38,685 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:38,700 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:38,730 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 [2022-07-13 04:20:38,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,732 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) [2022-07-13 04:20:38,748 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 [2022-07-13 04:20:38,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:38,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:38,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:38,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:38,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:38,754 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:38,754 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:38,754 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 [2022-07-13 04:20:38,771 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:38,788 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 [2022-07-13 04:20:38,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,790 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) [2022-07-13 04:20:38,791 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 [2022-07-13 04:20:38,792 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 [2022-07-13 04:20:38,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:38,797 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:38,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:38,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:38,798 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:38,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:38,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:38,799 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:38,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-07-13 04:20:38,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,816 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) [2022-07-13 04:20:38,817 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 [2022-07-13 04:20:38,819 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 [2022-07-13 04:20:38,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:38,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:38,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:38,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:38,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:38,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:38,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:38,841 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:38,844 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 04:20:38,844 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 04:20:38,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:38,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:38,847 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) [2022-07-13 04:20:38,886 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:38,886 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:38,886 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:38,887 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-07-13 04:20:38,899 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 [2022-07-13 04:20:38,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-07-13 04:20:38,905 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:38,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 04:20:38,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:38,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 04:20:38,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:38,990 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 [2022-07-13 04:20:38,992 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) [2022-07-13 04:20:39,049 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. [2022-07-13 04:20:39,051 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 [2022-07-13 04:20:39,054 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) [2022-07-13 04:20:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-07-13 04:20:39,056 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-07-13 04:20:39,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:39,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-07-13 04:20:39,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:39,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-07-13 04:20:39,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:39,085 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-07-13 04:20:39,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-13 04:20:39,089 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 [2022-07-13 04:20:39,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-07-13 04:20:39,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-07-13 04:20:39,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-07-13 04:20:39,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-07-13 04:20:39,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:39,093 INFO L369 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-07-13 04:20:39,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-07-13 04:20:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-07-13 04:20:39,110 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) [2022-07-13 04:20:39,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-07-13 04:20:39,111 INFO L392 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-07-13 04:20:39,111 INFO L374 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-07-13 04:20:39,111 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 04:20:39,112 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-07-13 04:20:39,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-13 04:20:39,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:39,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:39,113 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:39,113 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:39,113 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 [2022-07-13 04:20:39,114 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 [2022-07-13 04:20:39,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:39,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-07-13 04:20:39,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:39,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517544615] [2022-07-13 04:20:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:39,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 04:20:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 04:20:39,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:39,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517544615] [2022-07-13 04:20:39,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517544615] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 04:20:39,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 04:20:39,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 04:20:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420306499] [2022-07-13 04:20:39,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 04:20:39,196 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:39,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-07-13 04:20:39,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:39,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764954955] [2022-07-13 04:20:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:39,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 04:20:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 04:20:39,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:39,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764954955] [2022-07-13 04:20:39,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764954955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 04:20:39,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 04:20:39,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 04:20:39,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137964997] [2022-07-13 04:20:39,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 04:20:39,226 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 04:20:39,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:39,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 04:20:39,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 04:20:39,229 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) [2022-07-13 04:20:39,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:39,269 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-07-13 04:20:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 04:20:39,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-07-13 04:20:39,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-13 04:20:39,271 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-07-13 04:20:39,272 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-07-13 04:20:39,272 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-07-13 04:20:39,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-07-13 04:20:39,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:39,272 INFO L369 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-07-13 04:20:39,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-07-13 04:20:39,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-13 04:20:39,274 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) [2022-07-13 04:20:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-07-13 04:20:39,275 INFO L392 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-07-13 04:20:39,275 INFO L374 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-07-13 04:20:39,275 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 04:20:39,275 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-07-13 04:20:39,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-07-13 04:20:39,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:39,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:39,276 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:39,276 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:39,277 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 [2022-07-13 04:20:39,277 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 [2022-07-13 04:20:39,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-07-13 04:20:39,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:39,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669700897] [2022-07-13 04:20:39,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:39,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 04:20:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:39,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:39,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669700897] [2022-07-13 04:20:39,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669700897] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:39,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166537904] [2022-07-13 04:20:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:39,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:39,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,315 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) [2022-07-13 04:20:39,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 04:20:39,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:39,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 04:20:39,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:39,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:39,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:39,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166537904] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:39,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:39,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-07-13 04:20:39,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636991106] [2022-07-13 04:20:39,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:39,488 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:39,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:39,488 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-07-13 04:20:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:39,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073597124] [2022-07-13 04:20:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:39,510 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:39,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:39,592 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:39,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:39,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:39,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:39,593 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:39,593 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,593 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:39,593 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:39,593 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration3_Loop [2022-07-13 04:20:39,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:39,594 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:39,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:39,627 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:39,627 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:39,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,642 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) [2022-07-13 04:20:39,643 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 [2022-07-13 04:20:39,650 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:39,650 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:39,661 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:39,661 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:39,676 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 [2022-07-13 04:20:39,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,677 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) [2022-07-13 04:20:39,678 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 [2022-07-13 04:20:39,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:39,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:39,701 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:39,701 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:39,720 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 [2022-07-13 04:20:39,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,722 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) [2022-07-13 04:20:39,723 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 [2022-07-13 04:20:39,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:39,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:39,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-07-13 04:20:39,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:39,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:39,748 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) [2022-07-13 04:20:39,749 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 [2022-07-13 04:20:39,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:39,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:40,546 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:40,551 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 [2022-07-13 04:20:40,552 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:40,552 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:40,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:40,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:40,552 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:40,552 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:40,552 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:40,552 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:40,552 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration3_Loop [2022-07-13 04:20:40,552 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:40,552 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:40,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:40,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:40,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:40,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:40,621 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:40,621 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:40,622 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) [2022-07-13 04:20:40,623 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 [2022-07-13 04:20:40,624 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 [2022-07-13 04:20:40,630 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:40,630 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:40,630 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:40,630 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:40,630 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:40,631 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:40,631 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:40,647 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:40,665 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 [2022-07-13 04:20:40,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:40,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:40,667 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) [2022-07-13 04:20:40,668 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 [2022-07-13 04:20:40,669 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 [2022-07-13 04:20:40,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:40,676 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:40,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:40,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:40,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:40,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:40,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:40,678 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 04:20:40,695 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 [2022-07-13 04:20:40,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:40,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:40,696 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) [2022-07-13 04:20:40,698 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 [2022-07-13 04:20:40,700 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 [2022-07-13 04:20:40,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:40,705 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:40,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:40,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:40,706 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:40,707 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:40,707 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:40,723 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:40,726 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 04:20:40,726 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 04:20:40,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:40,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:40,728 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) [2022-07-13 04:20:40,729 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 [2022-07-13 04:20:40,730 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:40,730 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:40,730 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:40,730 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-07-13 04:20:40,745 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 [2022-07-13 04:20:40,746 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:40,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:40,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 04:20:40,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:40,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 04:20:40,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 04:20:41,003 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 [2022-07-13 04:20:41,003 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) [2022-07-13 04:20:41,151 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. [2022-07-13 04:20:41,152 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 [2022-07-13 04:20:41,153 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) [2022-07-13 04:20:41,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-07-13 04:20:41,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-07-13 04:20:41,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:41,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-07-13 04:20:41,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:41,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-07-13 04:20:41,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:41,155 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-07-13 04:20:41,158 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-07-13 04:20:41,161 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-07-13 04:20:41,161 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-07-13 04:20:41,161 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-07-13 04:20:41,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-07-13 04:20:41,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:41,162 INFO L369 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-07-13 04:20:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-07-13 04:20:41,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-07-13 04:20:41,169 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) [2022-07-13 04:20:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-07-13 04:20:41,182 INFO L392 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-07-13 04:20:41,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 04:20:41,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-13 04:20:41,189 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) [2022-07-13 04:20:41,229 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 [2022-07-13 04:20:41,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:41,293 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-07-13 04:20:41,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 04:20:41,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-07-13 04:20:41,303 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-07-13 04:20:41,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-07-13 04:20:41,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-07-13 04:20:41,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-07-13 04:20:41,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-07-13 04:20:41,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:41,315 INFO L369 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-07-13 04:20:41,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-07-13 04:20:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-07-13 04:20:41,325 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) [2022-07-13 04:20:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-07-13 04:20:41,329 INFO L392 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-07-13 04:20:41,329 INFO L374 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-07-13 04:20:41,329 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 04:20:41,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-07-13 04:20:41,333 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-07-13 04:20:41,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:41,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:41,335 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:41,336 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2022-07-13 04:20:41,337 INFO L752 eck$LassoCheckResult]: Stem: 789#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 790#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 804#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 806#fiboENTRY ~n := #in~n; 854#L8 assume !(~n < 1); 853#L10 assume !(1 == ~n); 803#L13 call #t~ret4 := fibo(~n - 1);< 805#fiboENTRY ~n := #in~n; 815#L8 assume !(~n < 1); 820#L10 assume !(1 == ~n); 826#L13 call #t~ret4 := fibo(~n - 1);< 847#fiboENTRY ~n := #in~n; 851#L8 assume !(~n < 1); 849#L10 assume !(1 == ~n); 843#L13 call #t~ret4 := fibo(~n - 1);< 847#fiboENTRY ~n := #in~n; 851#L8 assume !(~n < 1); 849#L10 assume !(1 == ~n); 843#L13 call #t~ret4 := fibo(~n - 1);< 847#fiboENTRY ~n := #in~n; 852#L8 assume !(~n < 1); 850#L10 assume 1 == ~n;#res := 1; 848#fiboFINAL assume true; 846#fiboEXIT >#33#return; 792#L13-1 call #t~ret5 := fibo(~n - 2);< 844#fiboENTRY ~n := #in~n; 892#L8 assume ~n < 1;#res := 0; 891#fiboFINAL assume true; 890#fiboEXIT >#35#return; 889#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 887#fiboFINAL assume true; 879#fiboEXIT >#33#return; 824#L13-1 [2022-07-13 04:20:41,337 INFO L754 eck$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 [2022-07-13 04:20:41,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:41,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-07-13 04:20:41,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:41,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830063501] [2022-07-13 04:20:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:41,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 04:20:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 04:20:41,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830063501] [2022-07-13 04:20:41,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830063501] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:41,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930645693] [2022-07-13 04:20:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:41,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:41,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:41,445 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) [2022-07-13 04:20:41,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-13 04:20:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 04:20:41,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 04:20:41,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 04:20:41,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930645693] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:41,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:41,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 18 [2022-07-13 04:20:41,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277526802] [2022-07-13 04:20:41,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:41,646 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 04:20:41,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:41,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1616897917, now seen corresponding path program 1 times [2022-07-13 04:20:41,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:41,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639813604] [2022-07-13 04:20:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:41,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 04:20:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-13 04:20:41,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639813604] [2022-07-13 04:20:41,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639813604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817988455] [2022-07-13 04:20:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:41,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:41,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:41,726 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) [2022-07-13 04:20:41,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-13 04:20:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:41,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 04:20:41,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 04:20:41,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-13 04:20:41,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817988455] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:41,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:41,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-07-13 04:20:41,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90164743] [2022-07-13 04:20:41,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:41,875 INFO L769 eck$LassoCheckResult]: loop already infeasible [2022-07-13 04:20:41,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:41,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 04:20:41,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-07-13 04:20:41,876 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) [2022-07-13 04:20:42,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:42,081 INFO L93 Difference]: Finished difference Result 146 states and 193 transitions. [2022-07-13 04:20:42,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 04:20:42,083 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146 states and 193 transitions. [2022-07-13 04:20:42,084 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2022-07-13 04:20:42,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146 states to 139 states and 186 transitions. [2022-07-13 04:20:42,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2022-07-13 04:20:42,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2022-07-13 04:20:42,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 186 transitions. [2022-07-13 04:20:42,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:42,087 INFO L369 hiAutomatonCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-07-13 04:20:42,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states and 186 transitions. [2022-07-13 04:20:42,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-07-13 04:20:42,093 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) [2022-07-13 04:20:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2022-07-13 04:20:42,094 INFO L392 hiAutomatonCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-07-13 04:20:42,094 INFO L374 stractBuchiCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-07-13 04:20:42,094 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-13 04:20:42,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 186 transitions. [2022-07-13 04:20:42,095 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2022-07-13 04:20:42,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 04:20:42,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 04:20:42,096 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 04:20:42,096 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-07-13 04:20:42,096 INFO L752 eck$LassoCheckResult]: Stem: 1564#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1565#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 1579#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1580#fiboENTRY ~n := #in~n; 1640#L8 assume !(~n < 1); 1600#L10 assume !(1 == ~n); 1577#L13 call #t~ret4 := fibo(~n - 1);< 1589#fiboENTRY ~n := #in~n; 1590#L8 assume !(~n < 1); 1597#L10 assume !(1 == ~n); 1576#L13 call #t~ret4 := fibo(~n - 1);< 1578#fiboENTRY ~n := #in~n; 1639#L8 assume !(~n < 1); 1638#L10 assume !(1 == ~n); 1634#L13 call #t~ret4 := fibo(~n - 1);< 1637#fiboENTRY ~n := #in~n; 1636#L8 assume !(~n < 1); 1635#L10 assume !(1 == ~n); 1621#L13 call #t~ret4 := fibo(~n - 1);< 1627#fiboENTRY ~n := #in~n; 1633#L8 assume !(~n < 1); 1632#L10 assume !(1 == ~n); 1622#L13 call #t~ret4 := fibo(~n - 1);< 1627#fiboENTRY ~n := #in~n; 1633#L8 assume !(~n < 1); 1632#L10 assume !(1 == ~n); 1622#L13 call #t~ret4 := fibo(~n - 1);< 1627#fiboENTRY ~n := #in~n; 1631#L8 assume !(~n < 1); 1630#L10 assume 1 == ~n;#res := 1; 1628#fiboFINAL assume true; 1626#fiboEXIT >#33#return; 1567#L13-1 call #t~ret5 := fibo(~n - 2);< 1623#fiboENTRY ~n := #in~n; 1642#L8 assume ~n < 1;#res := 0; 1688#fiboFINAL assume true; 1686#fiboEXIT >#35#return; 1682#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1680#fiboFINAL assume true; 1663#fiboEXIT >#33#return; 1583#L13-1 [2022-07-13 04:20:42,096 INFO L754 eck$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 [2022-07-13 04:20:42,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:42,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1856310800, now seen corresponding path program 2 times [2022-07-13 04:20:42,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:42,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583172697] [2022-07-13 04:20:42,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:42,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:42,105 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:42,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:42,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:42,114 INFO L85 PathProgramCache]: Analyzing trace with hash 780094678, now seen corresponding path program 2 times [2022-07-13 04:20:42,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:42,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808345512] [2022-07-13 04:20:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:42,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:42,118 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 04:20:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 04:20:42,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 04:20:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:42,122 INFO L85 PathProgramCache]: Analyzing trace with hash -705851003, now seen corresponding path program 3 times [2022-07-13 04:20:42,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 04:20:42,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603351717] [2022-07-13 04:20:42,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 04:20:42,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 04:20:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 04:20:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 04:20:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 04:20:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-13 04:20:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 70 proven. 100 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-13 04:20:42,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 04:20:42,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603351717] [2022-07-13 04:20:42,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603351717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 04:20:42,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023281906] [2022-07-13 04:20:42,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 04:20:42,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 04:20:42,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:42,261 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) [2022-07-13 04:20:42,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-13 04:20:42,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-07-13 04:20:42,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 04:20:42,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 04:20:42,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 87 proven. 47 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-13 04:20:42,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 04:20:42,644 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 87 proven. 49 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-13 04:20:42,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023281906] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 04:20:42,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 04:20:42,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 12] total 27 [2022-07-13 04:20:42,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952561034] [2022-07-13 04:20:42,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 04:20:42,775 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:42,776 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:42,776 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:42,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:42,776 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 04:20:42,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:42,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:42,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:42,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration5_Loop [2022-07-13 04:20:42,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:42,776 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:42,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:42,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:42,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:42,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:42,806 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:42,806 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 04:20:42,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:42,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:42,810 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) [2022-07-13 04:20:42,811 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 [2022-07-13 04:20:42,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:42,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:42,823 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 04:20:42,823 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 04:20:42,838 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 [2022-07-13 04:20:42,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:42,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:42,840 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) [2022-07-13 04:20:42,840 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 [2022-07-13 04:20:42,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 04:20:42,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:42,877 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 [2022-07-13 04:20:42,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:42,879 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) [2022-07-13 04:20:42,880 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 [2022-07-13 04:20:42,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 04:20:42,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 04:20:43,823 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 04:20:43,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:43,827 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 04:20:43,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 04:20:43,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 04:20:43,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 04:20:43,827 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 04:20:43,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:43,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 04:20:43,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 04:20:43,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration5_Loop [2022-07-13 04:20:43,827 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 04:20:43,827 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 04:20:43,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 04:20:43,870 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 04:20:43,870 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 04:20:43,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:43,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:43,882 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) [2022-07-13 04:20:43,882 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 [2022-07-13 04:20:43,884 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 [2022-07-13 04:20:43,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 04:20:43,890 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 04:20:43,890 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 04:20:43,890 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 04:20:43,890 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 04:20:43,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 04:20:43,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 04:20:43,893 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 04:20:43,895 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 04:20:43,895 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 04:20:43,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 04:20:43,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 04:20:43,896 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) [2022-07-13 04:20:43,897 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 [2022-07-13 04:20:43,898 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 04:20:43,898 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 04:20:43,898 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 04:20:43,898 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-07-13 04:20:43,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:43,916 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 04:20:43,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:43,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 04:20:43,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:44,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 04:20:44,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:44,176 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 [2022-07-13 04:20:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 04:20:44,249 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 [2022-07-13 04:20:44,250 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) [2022-07-13 04:20:44,402 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. [2022-07-13 04:20:44,402 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 [2022-07-13 04:20:44,403 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) [2022-07-13 04:20:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 41 transitions. [2022-07-13 04:20:44,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 40 letters. Loop has 22 letters. [2022-07-13 04:20:44,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:44,404 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:44,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:44,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 04:20:44,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:44,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 04:20:44,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 04:20:44,647 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 [2022-07-13 04:20:44,647 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) [2022-07-13 04:20:44,750 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. [2022-07-13 04:20:44,751 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 [2022-07-13 04:20:44,751 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) [2022-07-13 04:20:44,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-07-13 04:20:44,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 40 letters. Loop has 22 letters. [2022-07-13 04:20:44,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:44,752 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-13 04:20:44,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 04:20:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:44,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 04:20:44,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 04:20:44,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 04:20:44,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 04:20:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 04:20:44,987 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 [2022-07-13 04:20:44,987 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) [2022-07-13 04:20:45,163 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. [2022-07-13 04:20:45,164 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 [2022-07-13 04:20:45,165 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) [2022-07-13 04:20:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 46 transitions. [2022-07-13 04:20:45,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 40 letters. Loop has 22 letters. [2022-07-13 04:20:45,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:45,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 62 letters. Loop has 22 letters. [2022-07-13 04:20:45,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:45,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 40 letters. Loop has 44 letters. [2022-07-13 04:20:45,168 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 04:20:45,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1179 states and 1649 transitions. [2022-07-13 04:20:45,180 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 58 [2022-07-13 04:20:45,188 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1179 states to 679 states and 1031 transitions. [2022-07-13 04:20:45,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 271 [2022-07-13 04:20:45,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 302 [2022-07-13 04:20:45,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 679 states and 1031 transitions. [2022-07-13 04:20:45,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 04:20:45,189 INFO L369 hiAutomatonCegarLoop]: Abstraction has 679 states and 1031 transitions. [2022-07-13 04:20:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states and 1031 transitions. [2022-07-13 04:20:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 521. [2022-07-13 04:20:45,208 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) [2022-07-13 04:20:45,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 748 transitions. [2022-07-13 04:20:45,211 INFO L392 hiAutomatonCegarLoop]: Abstraction has 521 states and 748 transitions. [2022-07-13 04:20:45,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 04:20:45,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 04:20:45,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2022-07-13 04:20:45,212 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) [2022-07-13 04:20:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 04:20:45,739 INFO L93 Difference]: Finished difference Result 319 states and 372 transitions. [2022-07-13 04:20:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-13 04:20:45,739 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 319 states and 372 transitions. [2022-07-13 04:20:45,742 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 04:20:45,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 319 states to 0 states and 0 transitions. [2022-07-13 04:20:45,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-13 04:20:45,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-13 04:20:45,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-13 04:20:45,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 04:20:45,742 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 04:20:45,742 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 04:20:45,742 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 04:20:45,743 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-13 04:20:45,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-13 04:20:45,743 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-13 04:20:45,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-13 04:20:45,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 04:20:45 BoogieIcfgContainer [2022-07-13 04:20:45,748 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 04:20:45,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 04:20:45,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 04:20:45,748 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 04:20:45,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 04:20:37" (3/4) ... [2022-07-13 04:20:45,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 04:20:45,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 04:20:45,751 INFO L158 Benchmark]: Toolchain (without parser) took 8353.07ms. Allocated memory was 92.3MB in the beginning and 157.3MB in the end (delta: 65.0MB). Free memory was 59.2MB in the beginning and 109.0MB in the end (delta: -49.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-07-13 04:20:45,751 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory was 54.0MB in the beginning and 53.9MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 04:20:45,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.19ms. Allocated memory is still 92.3MB. Free memory was 58.9MB in the beginning and 69.9MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 04:20:45,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.16ms. Allocated memory is still 92.3MB. Free memory was 69.9MB in the beginning and 68.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 04:20:45,752 INFO L158 Benchmark]: Boogie Preprocessor took 15.62ms. Allocated memory is still 92.3MB. Free memory was 68.7MB in the beginning and 67.8MB in the end (delta: 948.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 04:20:45,752 INFO L158 Benchmark]: RCFGBuilder took 223.31ms. Allocated memory is still 92.3MB. Free memory was 67.8MB in the beginning and 59.1MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 04:20:45,752 INFO L158 Benchmark]: BuchiAutomizer took 7866.66ms. Allocated memory was 92.3MB in the beginning and 157.3MB in the end (delta: 65.0MB). Free memory was 58.8MB in the beginning and 109.0MB in the end (delta: -50.2MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2022-07-13 04:20:45,753 INFO L158 Benchmark]: Witness Printer took 2.41ms. Allocated memory is still 157.3MB. Free memory is still 109.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 04:20:45,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 75.5MB. Free memory was 54.0MB in the beginning and 53.9MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.19ms. Allocated memory is still 92.3MB. Free memory was 58.9MB in the beginning and 69.9MB in the end (delta: -11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.16ms. Allocated memory is still 92.3MB. Free memory was 69.9MB in the beginning and 68.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.62ms. Allocated memory is still 92.3MB. Free memory was 68.7MB in the beginning and 67.8MB in the end (delta: 948.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 223.31ms. Allocated memory is still 92.3MB. Free memory was 67.8MB in the beginning and 59.1MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 7866.66ms. Allocated memory was 92.3MB in the beginning and 157.3MB in the end (delta: 65.0MB). Free memory was 58.8MB in the beginning and 109.0MB in the end (delta: -50.2MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Witness Printer took 2.41ms. Allocated memory is still 157.3MB. Free memory is still 109.0MB. 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 7.8s and 6 iterations. TraceHistogramMax:8. Analysis of lassos took 4.8s. Construction of modules took 0.5s. Büchi inclusion checks took 2.1s. 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, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 437 mSDsluCounter, 425 SdHoareTripleChecker+Invalid, 0.5s 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: 36ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-13 04:20:45,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:46,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:46,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-13 04:20:46,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 04:20:46,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE