./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:56:19,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:56:19,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-15 00:56:19,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:56:19,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:56:19,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:56:19,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:56:19,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:56:19,860 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:56:19,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:56:19,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:56:19,863 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:56:19,863 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:56:19,867 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-15 00:56:19,867 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-15 00:56:19,867 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-15 00:56:19,867 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-15 00:56:19,868 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-15 00:56:19,868 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-15 00:56:19,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:56:19,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-15 00:56:19,871 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:56:19,871 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:56:19,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:56:19,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:56:19,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-15 00:56:19,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-15 00:56:19,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-15 00:56:19,872 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:56:19,873 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:56:19,873 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:56:19,873 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:56:19,873 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-15 00:56:19,873 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:56:19,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:56:19,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:56:19,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:56:19,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:56:19,875 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-15 00:56:19,876 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2024-10-15 00:56:20,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:56:20,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:56:20,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:56:20,147 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:56:20,147 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:56:20,149 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2024-10-15 00:56:21,646 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:56:21,832 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:56:21,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2024-10-15 00:56:21,842 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b79b468f/2addee5fc67d4be89189ddbef17d9c93/FLAGab92ebec6 [2024-10-15 00:56:22,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b79b468f/2addee5fc67d4be89189ddbef17d9c93 [2024-10-15 00:56:22,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:56:22,231 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:56:22,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:56:22,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:56:22,238 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:56:22,239 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eeaaef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22, skipping insertion in model container [2024-10-15 00:56:22,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,263 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:56:22,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:56:22,438 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:56:22,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:56:22,472 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:56:22,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22 WrapperNode [2024-10-15 00:56:22,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:56:22,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:56:22,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:56:22,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:56:22,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,487 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,501 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-10-15 00:56:22,502 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:56:22,503 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:56:22,503 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:56:22,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:56:22,512 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,514 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,525 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-15 00:56:22,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,526 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,531 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,538 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:56:22,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:56:22,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:56:22,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:56:22,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (1/1) ... [2024-10-15 00:56:22,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:22,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:22,576 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) [2024-10-15 00:56:22,580 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 [2024-10-15 00:56:22,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:56:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:56:22,626 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-10-15 00:56:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-10-15 00:56:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-10-15 00:56:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-10-15 00:56:22,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:56:22,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:56:22,678 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:56:22,680 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:56:22,815 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-10-15 00:56:22,815 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:56:22,826 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:56:22,827 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 00:56:22,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:56:22 BoogieIcfgContainer [2024-10-15 00:56:22,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:56:22,828 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-15 00:56:22,828 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-15 00:56:22,836 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-15 00:56:22,837 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:56:22,837 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 12:56:22" (1/3) ... [2024-10-15 00:56:22,838 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c00111c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:56:22, skipping insertion in model container [2024-10-15 00:56:22,838 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:56:22,839 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:56:22" (2/3) ... [2024-10-15 00:56:22,839 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c00111c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 12:56:22, skipping insertion in model container [2024-10-15 00:56:22,839 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-15 00:56:22,839 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:56:22" (3/3) ... [2024-10-15 00:56:22,840 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2024-10-15 00:56:22,897 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-15 00:56:22,897 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-15 00:56:22,897 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-15 00:56:22,897 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-15 00:56:22,897 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-15 00:56:22,898 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-15 00:56:22,898 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-15 00:56:22,898 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-15 00:56:22,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 00:56:22,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-10-15 00:56:22,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:22,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:22,930 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-15 00:56:22,931 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:22,931 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-15 00:56:22,931 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 00:56:22,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-10-15 00:56:22,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:22,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:22,937 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-15 00:56:22,937 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:22,944 INFO L745 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2024-10-15 00:56:22,945 INFO L747 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2024-10-15 00:56:22,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:22,955 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2024-10-15 00:56:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:22,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99517768] [2024-10-15 00:56:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:23,066 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:56:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:23,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:56:23,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2024-10-15 00:56:23,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:23,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541258796] [2024-10-15 00:56:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:23,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:23,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:56:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:23,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:56:23,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2024-10-15 00:56:23,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:23,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220239969] [2024-10-15 00:56:23,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:23,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:23,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:56:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:23,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:56:23,427 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:23,428 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:23,428 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:23,428 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:23,428 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-15 00:56:23,428 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,429 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:23,429 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:23,429 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2024-10-15 00:56:23,429 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:23,429 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:23,446 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,463 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,466 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,470 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,473 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,476 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,479 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,579 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:23,579 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-15 00:56:23,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,584 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) [2024-10-15 00:56:23,586 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 [2024-10-15 00:56:23,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:23,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:23,606 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:23,607 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:23,623 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 [2024-10-15 00:56:23,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,626 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) [2024-10-15 00:56:23,628 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 [2024-10-15 00:56:23,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:23,631 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:23,646 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:23,646 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:23,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:23,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,660 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) [2024-10-15 00:56:23,661 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 [2024-10-15 00:56:23,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:23,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:23,675 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:23,675 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:23,686 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 [2024-10-15 00:56:23,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,688 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) [2024-10-15 00:56:23,689 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 [2024-10-15 00:56:23,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:23,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:23,704 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:23,704 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:23,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:23,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,716 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) [2024-10-15 00:56:23,717 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 [2024-10-15 00:56:23,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:23,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:23,731 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:23,732 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:23,742 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 [2024-10-15 00:56:23,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,743 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) [2024-10-15 00:56:23,745 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 [2024-10-15 00:56:23,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:23,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:23,757 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:23,757 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:23,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:23,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,770 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) [2024-10-15 00:56:23,771 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 [2024-10-15 00:56:23,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:23,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:23,783 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:23,783 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:23,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-15 00:56:23,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,795 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) [2024-10-15 00:56:23,796 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 [2024-10-15 00:56:23,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:23,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:23,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:23,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,820 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) [2024-10-15 00:56:23,821 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 [2024-10-15 00:56:23,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-15 00:56:23,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:23,874 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-15 00:56:23,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:23,879 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:23,879 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:23,879 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:23,879 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:23,879 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-15 00:56:23,879 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,879 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:23,879 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:23,879 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2024-10-15 00:56:23,879 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:23,879 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:23,881 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,888 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,891 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,893 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,896 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,906 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,909 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:23,963 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:23,967 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-15 00:56:23,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:23,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:23,971 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) [2024-10-15 00:56:23,972 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 [2024-10-15 00:56:23,974 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 [2024-10-15 00:56:23,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:23,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:23,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:23,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:23,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:23,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:23,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:23,996 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:24,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-15 00:56:24,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:24,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:24,013 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2024-10-15 00:56:24,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-15 00:56:24,016 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 [2024-10-15 00:56:24,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:24,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:24,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:24,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:24,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:24,032 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:24,032 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:24,034 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:24,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:24,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:24,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:24,049 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) [2024-10-15 00:56:24,050 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 [2024-10-15 00:56:24,051 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 [2024-10-15 00:56:24,060 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:24,061 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:24,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:24,061 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:24,061 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:24,062 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:24,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:24,064 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:24,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-15 00:56:24,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:24,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:24,076 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) [2024-10-15 00:56:24,077 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 [2024-10-15 00:56:24,078 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 [2024-10-15 00:56:24,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:24,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:24,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:24,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:24,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:24,089 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:24,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:24,091 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:24,106 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 [2024-10-15 00:56:24,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:24,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:24,110 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) [2024-10-15 00:56:24,112 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 [2024-10-15 00:56:24,112 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 [2024-10-15 00:56:24,125 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:24,125 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:24,125 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:24,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:24,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:24,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:24,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:24,129 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:24,143 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 [2024-10-15 00:56:24,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:24,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:24,145 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) [2024-10-15 00:56:24,148 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 [2024-10-15 00:56:24,149 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 [2024-10-15 00:56:24,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:24,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:24,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:24,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:24,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:24,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:24,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:24,165 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-15 00:56:24,169 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-15 00:56:24,169 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-15 00:56:24,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:24,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:24,173 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) [2024-10-15 00:56:24,174 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 [2024-10-15 00:56:24,175 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-15 00:56:24,179 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-15 00:56:24,179 INFO L474 LassoAnalysis]: Proved termination. [2024-10-15 00:56:24,180 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2024-10-15 00:56:24,200 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 [2024-10-15 00:56:24,203 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-15 00:56:24,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:24,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 00:56:24,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:24,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 00:56:24,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:24,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:56:24,414 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2024-10-15 00:56:24,416 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:56:24,573 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 107 transitions. Complement of second has 28 states. [2024-10-15 00:56:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2024-10-15 00:56:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:56:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2024-10-15 00:56:24,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 8 letters. [2024-10-15 00:56:24,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:24,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2024-10-15 00:56:24,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:24,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 16 letters. [2024-10-15 00:56:24,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:24,589 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 107 transitions. [2024-10-15 00:56:24,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-10-15 00:56:24,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 55 states and 75 transitions. [2024-10-15 00:56:24,609 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2024-10-15 00:56:24,609 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2024-10-15 00:56:24,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 75 transitions. [2024-10-15 00:56:24,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:24,610 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 75 transitions. [2024-10-15 00:56:24,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 75 transitions. [2024-10-15 00:56:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-10-15 00:56:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2024-10-15 00:56:24,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-10-15 00:56:24,647 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-10-15 00:56:24,647 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-10-15 00:56:24,647 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-15 00:56:24,648 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2024-10-15 00:56:24,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-10-15 00:56:24,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:24,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:24,652 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:24,653 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:24,653 INFO L745 eck$LassoCheckResult]: Stem: 232#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 219#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 214#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 213#$Ultimate##0 ~n := #in~n; 215#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 208#L15 call #t~ret4 := fibo2(~n - 1);< 230#$Ultimate##0 ~n := #in~n; 235#L20 assume !(~n < 1); 236#L22 assume !(1 == ~n); 200#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#48#return; 207#L25-1 [2024-10-15 00:56:24,654 INFO L747 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret7 := fibo1(~n - 2);< 212#$Ultimate##0 ~n := #in~n; 237#L10 assume !(~n < 1); 238#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 241#$Ultimate##0 ~n := #in~n; 240#L20 assume !(~n < 1); 239#L22 assume !(1 == ~n); 220#L25 call #t~ret6 := fibo1(~n - 1);< 212#$Ultimate##0 ~n := #in~n; 237#L10 assume ~n < 1;#res := 0; 233#fibo1FINAL assume true; 234#fibo1EXIT >#48#return; 207#L25-1 [2024-10-15 00:56:24,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2024-10-15 00:56:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:24,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550830452] [2024-10-15 00:56:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:24,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-10-15 00:56:24,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 00:56:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:24,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:56:24,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:24,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550830452] [2024-10-15 00:56:24,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550830452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:56:24,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:56:24,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 00:56:24,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062210726] [2024-10-15 00:56:24,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:56:24,865 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-15 00:56:24,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:24,865 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2024-10-15 00:56:24,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:24,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784971607] [2024-10-15 00:56:24,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:24,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:24,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-15 00:56:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:24,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:56:24,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:24,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784971607] [2024-10-15 00:56:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784971607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:56:24,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:56:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 00:56:24,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886615025] [2024-10-15 00:56:24,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:56:24,947 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-15 00:56:24,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:56:24,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:56:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-15 00:56:24,951 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 00:56:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:56:25,026 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-10-15 00:56:25,026 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2024-10-15 00:56:25,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-10-15 00:56:25,032 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 60 states and 79 transitions. [2024-10-15 00:56:25,034 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-10-15 00:56:25,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2024-10-15 00:56:25,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 79 transitions. [2024-10-15 00:56:25,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:25,035 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-15 00:56:25,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 79 transitions. [2024-10-15 00:56:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-10-15 00:56:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 44 states have internal predecessors, (49), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-10-15 00:56:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-10-15 00:56:25,043 INFO L240 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-15 00:56:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:56:25,044 INFO L425 stractBuchiCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-10-15 00:56:25,045 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-15 00:56:25,045 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 79 transitions. [2024-10-15 00:56:25,046 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-10-15 00:56:25,046 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:25,046 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:25,047 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:25,047 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:25,047 INFO L745 eck$LassoCheckResult]: Stem: 370#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 352#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 353#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 354#$Ultimate##0 ~n := #in~n; 355#L10 assume !(~n < 1); 390#L12 assume !(1 == ~n); 346#L15 call #t~ret4 := fibo2(~n - 1);< 369#$Ultimate##0 ~n := #in~n; 376#L20 assume !(~n < 1); 377#L22 assume !(1 == ~n); 337#L25 call #t~ret6 := fibo1(~n - 1);< 356#$Ultimate##0 ~n := #in~n; 357#L10 assume !(~n < 1); 366#L12 assume 1 == ~n;#res := 1; 378#fibo1FINAL assume true; 374#fibo1EXIT >#48#return; 343#L25-1 [2024-10-15 00:56:25,048 INFO L747 eck$LassoCheckResult]: Loop: 343#L25-1 call #t~ret7 := fibo1(~n - 2);< 350#$Ultimate##0 ~n := #in~n; 379#L10 assume !(~n < 1); 360#L12 assume !(1 == ~n); 348#L15 call #t~ret4 := fibo2(~n - 1);< 383#$Ultimate##0 ~n := #in~n; 382#L20 assume !(~n < 1); 380#L22 assume !(1 == ~n); 344#L25 call #t~ret6 := fibo1(~n - 1);< 350#$Ultimate##0 ~n := #in~n; 379#L10 assume !(~n < 1); 360#L12 assume 1 == ~n;#res := 1; 361#fibo1FINAL assume true; 373#fibo1EXIT >#48#return; 343#L25-1 [2024-10-15 00:56:25,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2024-10-15 00:56:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711242430] [2024-10-15 00:56:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:25,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 00:56:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:56:25,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:25,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711242430] [2024-10-15 00:56:25,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711242430] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:56:25,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098979678] [2024-10-15 00:56:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:25,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:56:25,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:25,211 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:56:25,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-15 00:56:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:25,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 00:56:25,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:56:25,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:56:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:56:25,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098979678] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:56:25,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:56:25,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-10-15 00:56:25,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698347970] [2024-10-15 00:56:25,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:56:25,467 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-15 00:56:25,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:25,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2024-10-15 00:56:25,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:25,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548317910] [2024-10-15 00:56:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:25,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:25,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:56:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:25,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:56:25,677 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:25,677 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:25,677 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:25,678 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:25,678 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-15 00:56:25,678 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:25,678 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:25,678 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:25,678 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2024-10-15 00:56:25,678 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:25,678 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:25,679 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,682 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,686 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,688 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,690 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,697 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,701 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,756 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:25,756 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-15 00:56:25,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:25,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:25,758 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) [2024-10-15 00:56:25,760 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 [2024-10-15 00:56:25,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:25,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:25,775 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:25,775 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:25,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-15 00:56:25,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:25,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:25,792 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) [2024-10-15 00:56:25,794 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 [2024-10-15 00:56:25,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:25,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:25,808 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:25,808 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:25,819 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 [2024-10-15 00:56:25,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:25,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:25,820 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2024-10-15 00:56:25,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-15 00:56:25,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:25,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:25,834 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:25,834 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:25,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:25,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:25,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:25,847 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2024-10-15 00:56:25,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-15 00:56:25,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:25,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:25,860 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:25,860 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:25,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:25,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:25,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:25,872 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2024-10-15 00:56:25,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-15 00:56:25,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:25,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:25,885 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:25,886 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:25,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:25,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:25,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:25,898 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) [2024-10-15 00:56:25,898 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 [2024-10-15 00:56:25,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:25,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:25,923 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 [2024-10-15 00:56:25,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:25,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:25,924 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) [2024-10-15 00:56:25,925 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 [2024-10-15 00:56:25,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-15 00:56:25,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:25,939 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-15 00:56:25,954 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 [2024-10-15 00:56:25,955 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:25,955 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:25,955 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:25,955 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:25,955 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-15 00:56:25,955 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:25,955 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:25,955 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:25,955 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2024-10-15 00:56:25,955 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:25,955 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:25,956 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,965 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,967 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,971 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,983 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:25,985 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:26,038 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:26,040 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-15 00:56:26,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:26,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:26,042 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) [2024-10-15 00:56:26,045 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 [2024-10-15 00:56:26,047 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 [2024-10-15 00:56:26,059 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:26,059 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:26,059 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:26,059 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:26,059 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:26,062 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:26,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:26,066 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:26,080 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 [2024-10-15 00:56:26,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:26,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:26,083 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) [2024-10-15 00:56:26,084 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 [2024-10-15 00:56:26,085 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 [2024-10-15 00:56:26,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:26,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:26,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:26,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:26,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:26,099 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:26,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:26,100 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:26,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-10-15 00:56:26,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:26,117 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) [2024-10-15 00:56:26,120 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 [2024-10-15 00:56:26,124 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 [2024-10-15 00:56:26,134 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:26,134 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:26,134 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:26,134 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:26,134 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:26,138 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:26,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:26,142 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:26,157 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 [2024-10-15 00:56:26,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:26,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:26,160 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2024-10-15 00:56:26,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-15 00:56:26,162 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 [2024-10-15 00:56:26,174 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:26,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:26,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:26,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:26,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:26,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:26,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:26,181 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:26,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-10-15 00:56:26,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:26,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:26,198 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2024-10-15 00:56:26,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-15 00:56:26,201 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 [2024-10-15 00:56:26,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:26,213 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:26,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:26,214 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:26,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:26,215 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:26,215 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:26,217 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-15 00:56:26,221 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-15 00:56:26,221 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-15 00:56:26,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:26,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:26,223 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2024-10-15 00:56:26,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-15 00:56:26,225 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-15 00:56:26,225 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-15 00:56:26,225 INFO L474 LassoAnalysis]: Proved termination. [2024-10-15 00:56:26,225 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2024-10-15 00:56:26,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:26,240 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-15 00:56:26,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:26,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 00:56:26,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:26,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-10-15 00:56:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:26,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-15 00:56:26,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:56:26,542 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-10-15 00:56:26,542 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 00:56:27,018 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 206 states and 282 transitions. Complement of second has 48 states. [2024-10-15 00:56:27,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-10-15 00:56:27,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 00:56:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 79 transitions. [2024-10-15 00:56:27,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 14 letters. [2024-10-15 00:56:27,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:27,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 30 letters. Loop has 14 letters. [2024-10-15 00:56:27,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:27,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 28 letters. [2024-10-15 00:56:27,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:27,023 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 282 transitions. [2024-10-15 00:56:27,029 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-10-15 00:56:27,038 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 182 states and 254 transitions. [2024-10-15 00:56:27,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 112 [2024-10-15 00:56:27,041 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2024-10-15 00:56:27,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2024-10-15 00:56:27,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:27,043 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2024-10-15 00:56:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2024-10-15 00:56:27,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 154. [2024-10-15 00:56:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 96 states have (on average 1.28125) internal successors, (123), 104 states have internal predecessors, (123), 35 states have call successors, (36), 19 states have call predecessors, (36), 23 states have return successors, (52), 30 states have call predecessors, (52), 33 states have call successors, (52) [2024-10-15 00:56:27,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2024-10-15 00:56:27,070 INFO L240 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2024-10-15 00:56:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:56:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 00:56:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-10-15 00:56:27,071 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 00:56:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:56:27,274 INFO L93 Difference]: Finished difference Result 191 states and 256 transitions. [2024-10-15 00:56:27,274 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 256 transitions. [2024-10-15 00:56:27,281 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-10-15 00:56:27,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 248 transitions. [2024-10-15 00:56:27,288 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2024-10-15 00:56:27,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2024-10-15 00:56:27,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 248 transitions. [2024-10-15 00:56:27,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:27,289 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 248 transitions. [2024-10-15 00:56:27,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 248 transitions. [2024-10-15 00:56:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2024-10-15 00:56:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (58), 34 states have call predecessors, (58), 37 states have call successors, (58) [2024-10-15 00:56:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 233 transitions. [2024-10-15 00:56:27,306 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 233 transitions. [2024-10-15 00:56:27,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 00:56:27,307 INFO L425 stractBuchiCegarLoop]: Abstraction has 172 states and 233 transitions. [2024-10-15 00:56:27,307 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-15 00:56:27,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 233 transitions. [2024-10-15 00:56:27,309 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-10-15 00:56:27,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:27,310 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:27,312 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:27,312 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:27,312 INFO L745 eck$LassoCheckResult]: Stem: 1300#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1261#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1262#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1305#$Ultimate##0 ~n := #in~n; 1290#L10 assume !(~n < 1); 1282#L12 assume !(1 == ~n); 1238#L15 call #t~ret4 := fibo2(~n - 1);< 1242#$Ultimate##0 ~n := #in~n; 1243#L20 assume !(~n < 1); 1237#L22 assume !(1 == ~n); 1239#L25 call #t~ret6 := fibo1(~n - 1);< 1264#$Ultimate##0 ~n := #in~n; 1267#L10 assume !(~n < 1); 1330#L12 assume !(1 == ~n); 1269#L15 call #t~ret4 := fibo2(~n - 1);< 1329#$Ultimate##0 ~n := #in~n; 1339#L20 assume !(~n < 1); 1340#L22 assume !(1 == ~n); 1265#L25 call #t~ret6 := fibo1(~n - 1);< 1264#$Ultimate##0 ~n := #in~n; 1267#L10 assume !(~n < 1); 1330#L12 assume !(1 == ~n); 1269#L15 call #t~ret4 := fibo2(~n - 1);< 1329#$Ultimate##0 ~n := #in~n; 1339#L20 assume ~n < 1;#res := 0; 1337#fibo2FINAL assume true; 1304#fibo2EXIT >#52#return; 1268#L15-1 call #t~ret5 := fibo2(~n - 2);< 1270#$Ultimate##0 ~n := #in~n; 1298#L20 assume !(~n < 1); 1299#L22 assume !(1 == ~n); 1265#L25 call #t~ret6 := fibo1(~n - 1);< 1264#$Ultimate##0 ~n := #in~n; 1266#L10 assume !(~n < 1); 1344#L12 assume 1 == ~n;#res := 1; 1345#fibo1FINAL assume true; 1341#fibo1EXIT >#48#return; 1324#L25-1 call #t~ret7 := fibo1(~n - 2);< 1255#$Ultimate##0 ~n := #in~n; 1334#L10 assume !(~n < 1); 1332#L12 assume !(1 == ~n); 1254#L15 call #t~ret4 := fibo2(~n - 1);< 1321#$Ultimate##0 ~n := #in~n; 1318#L20 assume ~n < 1;#res := 0; 1319#fibo2FINAL assume true; 1325#fibo2EXIT >#52#return; 1253#L15-1 call #t~ret5 := fibo2(~n - 2);< 1321#$Ultimate##0 ~n := #in~n; 1318#L20 assume !(~n < 1); 1314#L22 assume 1 == ~n;#res := 1; 1315#fibo2FINAL assume true; 1389#fibo2EXIT >#54#return; 1302#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1400#fibo1FINAL assume true; 1399#fibo1EXIT >#50#return; 1260#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1398#fibo2FINAL assume true; 1390#fibo2EXIT >#54#return; 1302#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1400#fibo1FINAL assume true; 1399#fibo1EXIT >#48#return; 1259#L25-1 call #t~ret7 := fibo1(~n - 2);< 1251#$Ultimate##0 ~n := #in~n; 1263#L10 assume ~n < 1;#res := 0; 1384#fibo1FINAL assume true; 1256#fibo1EXIT >#50#return; 1260#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1398#fibo2FINAL assume true; 1390#fibo2EXIT >#52#return; 1303#L15-1 [2024-10-15 00:56:27,313 INFO L747 eck$LassoCheckResult]: Loop: 1303#L15-1 call #t~ret5 := fibo2(~n - 2);< 1291#$Ultimate##0 ~n := #in~n; 1391#L20 assume !(~n < 1); 1392#L22 assume !(1 == ~n); 1257#L25 call #t~ret6 := fibo1(~n - 1);< 1251#$Ultimate##0 ~n := #in~n; 1263#L10 assume !(~n < 1); 1279#L12 assume !(1 == ~n); 1281#L15 call #t~ret4 := fibo2(~n - 1);< 1291#$Ultimate##0 ~n := #in~n; 1391#L20 assume ~n < 1;#res := 0; 1315#fibo2FINAL assume true; 1389#fibo2EXIT >#52#return; 1303#L15-1 [2024-10-15 00:56:27,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash -38750387, now seen corresponding path program 1 times [2024-10-15 00:56:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349472467] [2024-10-15 00:56:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-15 00:56:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-15 00:56:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-15 00:56:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 00:56:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 20 proven. 56 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-10-15 00:56:27,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:27,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349472467] [2024-10-15 00:56:27,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349472467] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:56:27,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565749479] [2024-10-15 00:56:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:27,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:56:27,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:27,670 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:56:27,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-15 00:56:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:27,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 00:56:27,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 59 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-15 00:56:27,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:56:28,416 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-15 00:56:28,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565749479] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:56:28,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:56:28,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 28 [2024-10-15 00:56:28,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668227362] [2024-10-15 00:56:28,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:56:28,417 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-15 00:56:28,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:28,418 INFO L85 PathProgramCache]: Analyzing trace with hash -441960109, now seen corresponding path program 1 times [2024-10-15 00:56:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:28,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381802527] [2024-10-15 00:56:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,453 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-15 00:56:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:56:28,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:28,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381802527] [2024-10-15 00:56:28,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381802527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:56:28,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:56:28,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 00:56:28,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153868703] [2024-10-15 00:56:28,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:56:28,470 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-15 00:56:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:56:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:56:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-15 00:56:28,471 INFO L87 Difference]: Start difference. First operand 172 states and 233 transitions. cyclomatic complexity: 66 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 00:56:28,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:56:28,514 INFO L93 Difference]: Finished difference Result 189 states and 249 transitions. [2024-10-15 00:56:28,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 249 transitions. [2024-10-15 00:56:28,517 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-10-15 00:56:28,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 177 states and 235 transitions. [2024-10-15 00:56:28,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2024-10-15 00:56:28,521 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2024-10-15 00:56:28,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 235 transitions. [2024-10-15 00:56:28,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:28,521 INFO L218 hiAutomatonCegarLoop]: Abstraction has 177 states and 235 transitions. [2024-10-15 00:56:28,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 235 transitions. [2024-10-15 00:56:28,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2024-10-15 00:56:28,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 113 states have internal predecessors, (124), 35 states have call successors, (36), 20 states have call predecessors, (36), 26 states have return successors, (53), 29 states have call predecessors, (53), 32 states have call successors, (53) [2024-10-15 00:56:28,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 213 transitions. [2024-10-15 00:56:28,539 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163 states and 213 transitions. [2024-10-15 00:56:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:56:28,543 INFO L425 stractBuchiCegarLoop]: Abstraction has 163 states and 213 transitions. [2024-10-15 00:56:28,544 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-15 00:56:28,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 213 transitions. [2024-10-15 00:56:28,545 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-10-15 00:56:28,545 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:28,545 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:28,548 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 8, 7, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-15 00:56:28,548 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-15 00:56:28,549 INFO L745 eck$LassoCheckResult]: Stem: 2264#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2239#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2240#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2267#$Ultimate##0 ~n := #in~n; 2260#L10 assume !(~n < 1); 2254#L12 assume !(1 == ~n); 2255#L15 call #t~ret4 := fibo2(~n - 1);< 2262#$Ultimate##0 ~n := #in~n; 2360#L20 assume !(~n < 1); 2359#L22 assume !(1 == ~n); 2243#L25 call #t~ret6 := fibo1(~n - 1);< 2242#$Ultimate##0 ~n := #in~n; 2287#L10 assume !(~n < 1); 2283#L12 assume !(1 == ~n); 2241#L15 call #t~ret4 := fibo2(~n - 1);< 2277#$Ultimate##0 ~n := #in~n; 2299#L20 assume !(~n < 1); 2298#L22 assume !(1 == ~n); 2212#L25 call #t~ret6 := fibo1(~n - 1);< 2242#$Ultimate##0 ~n := #in~n; 2287#L10 assume !(~n < 1); 2283#L12 assume !(1 == ~n); 2241#L15 call #t~ret4 := fibo2(~n - 1);< 2277#$Ultimate##0 ~n := #in~n; 2299#L20 assume !(~n < 1); 2298#L22 assume 1 == ~n;#res := 1; 2257#fibo2FINAL assume true; 2258#fibo2EXIT >#52#return; 2211#L15-1 call #t~ret5 := fibo2(~n - 2);< 2215#$Ultimate##0 ~n := #in~n; 2216#L20 assume !(~n < 1); 2210#L22 assume !(1 == ~n); 2212#L25 call #t~ret6 := fibo1(~n - 1);< 2242#$Ultimate##0 ~n := #in~n; 2289#L10 assume !(~n < 1); 2300#L12 assume 1 == ~n;#res := 1; 2297#fibo1FINAL assume true; 2296#fibo1EXIT >#48#return; 2252#L25-1 call #t~ret7 := fibo1(~n - 2);< 2231#$Ultimate##0 ~n := #in~n; 2292#L10 assume !(~n < 1); 2291#L12 assume !(1 == ~n); 2230#L15 call #t~ret4 := fibo2(~n - 1);< 2288#$Ultimate##0 ~n := #in~n; 2286#L20 assume !(~n < 1); 2279#L22 assume 1 == ~n;#res := 1; 2280#fibo2FINAL assume true; 2329#fibo2EXIT >#52#return; 2316#L15-1 call #t~ret5 := fibo2(~n - 2);< 2326#$Ultimate##0 ~n := #in~n; 2343#L20 assume !(~n < 1); 2342#L22 assume 1 == ~n;#res := 1; 2280#fibo2FINAL assume true; 2329#fibo2EXIT >#54#return; 2317#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2355#fibo1FINAL assume true; 2336#fibo1EXIT >#50#return; 2332#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2328#fibo2FINAL assume true; 2320#fibo2EXIT >#54#return; 2317#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2355#fibo1FINAL assume true; 2336#fibo1EXIT >#48#return; 2323#L25-1 call #t~ret7 := fibo1(~n - 2);< 2338#$Ultimate##0 ~n := #in~n; 2340#L10 assume !(~n < 1); 2333#L12 assume !(1 == ~n); 2321#L15 call #t~ret4 := fibo2(~n - 1);< 2326#$Ultimate##0 ~n := #in~n; 2343#L20 assume !(~n < 1); 2342#L22 assume 1 == ~n;#res := 1; 2280#fibo2FINAL assume true; 2329#fibo2EXIT >#52#return; 2316#L15-1 call #t~ret5 := fibo2(~n - 2);< 2326#$Ultimate##0 ~n := #in~n; 2343#L20 assume !(~n < 1); 2342#L22 assume 1 == ~n;#res := 1; 2280#fibo2FINAL assume true; 2329#fibo2EXIT >#54#return; 2317#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2355#fibo1FINAL assume true; 2336#fibo1EXIT >#50#return; 2332#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2328#fibo2FINAL assume true; 2320#fibo2EXIT >#52#return; 2316#L15-1 [2024-10-15 00:56:28,549 INFO L747 eck$LassoCheckResult]: Loop: 2316#L15-1 call #t~ret5 := fibo2(~n - 2);< 2326#$Ultimate##0 ~n := #in~n; 2343#L20 assume !(~n < 1); 2342#L22 assume !(1 == ~n); 2322#L25 call #t~ret6 := fibo1(~n - 1);< 2338#$Ultimate##0 ~n := #in~n; 2340#L10 assume !(~n < 1); 2333#L12 assume !(1 == ~n); 2321#L15 call #t~ret4 := fibo2(~n - 1);< 2326#$Ultimate##0 ~n := #in~n; 2343#L20 assume !(~n < 1); 2342#L22 assume !(1 == ~n); 2322#L25 call #t~ret6 := fibo1(~n - 1);< 2338#$Ultimate##0 ~n := #in~n; 2340#L10 assume !(~n < 1); 2333#L12 assume !(1 == ~n); 2321#L15 call #t~ret4 := fibo2(~n - 1);< 2326#$Ultimate##0 ~n := #in~n; 2343#L20 assume !(~n < 1); 2342#L22 assume 1 == ~n;#res := 1; 2280#fibo2FINAL assume true; 2329#fibo2EXIT >#52#return; 2316#L15-1 call #t~ret5 := fibo2(~n - 2);< 2326#$Ultimate##0 ~n := #in~n; 2343#L20 assume !(~n < 1); 2342#L22 assume 1 == ~n;#res := 1; 2280#fibo2FINAL assume true; 2329#fibo2EXIT >#54#return; 2317#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2355#fibo1FINAL assume true; 2336#fibo1EXIT >#48#return; 2323#L25-1 call #t~ret7 := fibo1(~n - 2);< 2338#$Ultimate##0 ~n := #in~n; 2340#L10 assume !(~n < 1); 2333#L12 assume !(1 == ~n); 2321#L15 call #t~ret4 := fibo2(~n - 1);< 2326#$Ultimate##0 ~n := #in~n; 2343#L20 assume !(~n < 1); 2342#L22 assume 1 == ~n;#res := 1; 2280#fibo2FINAL assume true; 2329#fibo2EXIT >#52#return; 2316#L15-1 call #t~ret5 := fibo2(~n - 2);< 2326#$Ultimate##0 ~n := #in~n; 2343#L20 assume !(~n < 1); 2342#L22 assume 1 == ~n;#res := 1; 2280#fibo2FINAL assume true; 2329#fibo2EXIT >#54#return; 2317#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2355#fibo1FINAL assume true; 2336#fibo1EXIT >#50#return; 2332#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2328#fibo2FINAL assume true; 2320#fibo2EXIT >#52#return; 2316#L15-1 [2024-10-15 00:56:28,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash -391800465, now seen corresponding path program 1 times [2024-10-15 00:56:28,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:28,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649048457] [2024-10-15 00:56:28,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:28,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:28,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-15 00:56:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 00:56:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:28,948 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 23 proven. 79 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-10-15 00:56:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:28,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649048457] [2024-10-15 00:56:28,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649048457] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:56:28,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560537486] [2024-10-15 00:56:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:28,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:56:28,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:28,952 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:56:28,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-15 00:56:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 00:56:29,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 23 proven. 98 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-10-15 00:56:29,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:56:29,565 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 23 proven. 99 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-10-15 00:56:29,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560537486] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:56:29,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:56:29,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 21 [2024-10-15 00:56:29,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107513273] [2024-10-15 00:56:29,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:56:29,567 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-15 00:56:29,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash 94767923, now seen corresponding path program 1 times [2024-10-15 00:56:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:29,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235970] [2024-10-15 00:56:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-15 00:56:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 00:56:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-10-15 00:56:29,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:29,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235970] [2024-10-15 00:56:29,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235970] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:56:29,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867157867] [2024-10-15 00:56:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:29,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:56:29,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:29,820 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:56:29,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-15 00:56:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:29,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:56:29,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-15 00:56:29,923 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:56:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-10-15 00:56:30,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867157867] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:56:30,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:56:30,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2024-10-15 00:56:30,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788681016] [2024-10-15 00:56:30,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:56:30,128 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-15 00:56:30,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:56:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 00:56:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-10-15 00:56:30,129 INFO L87 Difference]: Start difference. First operand 163 states and 213 transitions. cyclomatic complexity: 55 Second operand has 17 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2024-10-15 00:56:30,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:56:30,362 INFO L93 Difference]: Finished difference Result 117 states and 147 transitions. [2024-10-15 00:56:30,362 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 147 transitions. [2024-10-15 00:56:30,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-10-15 00:56:30,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 95 states and 118 transitions. [2024-10-15 00:56:30,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2024-10-15 00:56:30,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2024-10-15 00:56:30,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 118 transitions. [2024-10-15 00:56:30,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:30,366 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 118 transitions. [2024-10-15 00:56:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 118 transitions. [2024-10-15 00:56:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-10-15 00:56:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 63 states have internal predecessors, (69), 18 states have call successors, (18), 13 states have call predecessors, (18), 14 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2024-10-15 00:56:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2024-10-15 00:56:30,372 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 116 transitions. [2024-10-15 00:56:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 00:56:30,373 INFO L425 stractBuchiCegarLoop]: Abstraction has 93 states and 116 transitions. [2024-10-15 00:56:30,373 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-15 00:56:30,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 116 transitions. [2024-10-15 00:56:30,374 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2024-10-15 00:56:30,374 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:30,374 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:30,375 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:30,375 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:30,376 INFO L745 eck$LassoCheckResult]: Stem: 3720#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 3694#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3695#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3721#$Ultimate##0 ~n := #in~n; 3722#L10 assume !(~n < 1); 3707#L12 assume !(1 == ~n); 3704#L15 call #t~ret4 := fibo2(~n - 1);< 3736#$Ultimate##0 ~n := #in~n; 3735#L20 assume !(~n < 1); 3734#L22 assume !(1 == ~n); 3682#L25 call #t~ret6 := fibo1(~n - 1);< 3691#$Ultimate##0 ~n := #in~n; 3693#L10 assume !(~n < 1); 3710#L12 assume !(1 == ~n); 3674#L15 call #t~ret4 := fibo2(~n - 1);< 3679#$Ultimate##0 ~n := #in~n; 3680#L20 assume !(~n < 1); 3673#L22 assume !(1 == ~n); 3675#L25 call #t~ret6 := fibo1(~n - 1);< 3691#$Ultimate##0 ~n := #in~n; 3692#L10 assume !(~n < 1); 3723#L12 assume 1 == ~n;#res := 1; 3681#fibo1FINAL assume true; 3683#fibo1EXIT >#48#return; 3684#L25-1 call #t~ret7 := fibo1(~n - 2);< 3685#$Ultimate##0 ~n := #in~n; 3761#L10 assume ~n < 1;#res := 0; 3759#fibo1FINAL assume true; 3686#fibo1EXIT >#50#return; 3687#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3756#fibo2FINAL assume true; 3753#fibo2EXIT >#52#return; 3699#L15-1 [2024-10-15 00:56:30,376 INFO L747 eck$LassoCheckResult]: Loop: 3699#L15-1 call #t~ret5 := fibo2(~n - 2);< 3750#$Ultimate##0 ~n := #in~n; 3760#L20 assume !(~n < 1); 3726#L22 assume !(1 == ~n); 3714#L25 call #t~ret6 := fibo1(~n - 1);< 3703#$Ultimate##0 ~n := #in~n; 3724#L10 assume !(~n < 1); 3725#L12 assume !(1 == ~n); 3677#L15 call #t~ret4 := fibo2(~n - 1);< 3676#$Ultimate##0 ~n := #in~n; 3678#L20 assume !(~n < 1); 3726#L22 assume !(1 == ~n); 3714#L25 call #t~ret6 := fibo1(~n - 1);< 3703#$Ultimate##0 ~n := #in~n; 3724#L10 assume !(~n < 1); 3725#L12 assume 1 == ~n;#res := 1; 3706#fibo1FINAL assume true; 3730#fibo1EXIT >#48#return; 3689#L25-1 call #t~ret7 := fibo1(~n - 2);< 3688#$Ultimate##0 ~n := #in~n; 3690#L10 assume ~n < 1;#res := 0; 3709#fibo1FINAL assume true; 3758#fibo1EXIT >#50#return; 3731#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3754#fibo2FINAL assume true; 3751#fibo2EXIT >#52#return; 3699#L15-1 [2024-10-15 00:56:30,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:30,376 INFO L85 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2024-10-15 00:56:30,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:30,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565776951] [2024-10-15 00:56:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:30,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:30,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:56:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:30,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:56:30,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:30,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1404661389, now seen corresponding path program 1 times [2024-10-15 00:56:30,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:30,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543702773] [2024-10-15 00:56:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:30,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:30,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:56:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:30,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:56:30,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:30,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1060289932, now seen corresponding path program 1 times [2024-10-15 00:56:30,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:30,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962162924] [2024-10-15 00:56:30,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:30,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:30,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-15 00:56:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:30,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:30,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:30,522 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 00:56:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:30,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:30,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-15 00:56:30,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:30,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962162924] [2024-10-15 00:56:30,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962162924] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:56:30,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702489561] [2024-10-15 00:56:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:30,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:56:30,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:30,531 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:56:30,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-15 00:56:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:30,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 00:56:30,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:30,639 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-15 00:56:30,640 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:56:30,770 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-15 00:56:30,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702489561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:56:30,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:56:30,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2024-10-15 00:56:30,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263884157] [2024-10-15 00:56:30,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:56:31,010 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:31,011 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:31,011 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:31,011 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:31,011 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-15 00:56:31,011 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,011 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:31,011 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:31,011 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2024-10-15 00:56:31,011 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:31,011 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:31,012 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,017 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,019 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,026 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,069 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:31,069 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-15 00:56:31,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,071 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2024-10-15 00:56:31,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-10-15 00:56:31,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:31,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:31,087 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:31,087 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=3} Honda state: {fibo1_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:31,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:31,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,103 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2024-10-15 00:56:31,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-10-15 00:56:31,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:31,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:31,117 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:31,117 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:31,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-10-15 00:56:31,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,129 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2024-10-15 00:56:31,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-10-15 00:56:31,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:31,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:31,142 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:31,143 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:31,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:31,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,158 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2024-10-15 00:56:31,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-10-15 00:56:31,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:31,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:31,170 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:31,171 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:31,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:31,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,182 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2024-10-15 00:56:31,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-10-15 00:56:31,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:31,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:31,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:31,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,209 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2024-10-15 00:56:31,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-10-15 00:56:31,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-15 00:56:31,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:31,223 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-15 00:56:31,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:31,233 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:31,233 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:31,234 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:31,234 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:31,234 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-15 00:56:31,234 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,234 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:31,234 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:31,234 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2024-10-15 00:56:31,234 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:31,234 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:31,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,238 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,241 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,245 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,247 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,250 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,251 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,256 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:31,299 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:31,299 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-15 00:56:31,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,301 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2024-10-15 00:56:31,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-10-15 00:56:31,304 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 [2024-10-15 00:56:31,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:31,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:31,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:31,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:31,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:31,316 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:31,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:31,319 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:31,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:31,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,336 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2024-10-15 00:56:31,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-10-15 00:56:31,338 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 [2024-10-15 00:56:31,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:31,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:31,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:31,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:31,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:31,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:31,350 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:31,352 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:31,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2024-10-15 00:56:31,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,369 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2024-10-15 00:56:31,373 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 [2024-10-15 00:56:31,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-10-15 00:56:31,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:31,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:31,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:31,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:31,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:31,386 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:31,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:31,389 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:31,403 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2024-10-15 00:56:31,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,406 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2024-10-15 00:56:31,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-10-15 00:56:31,408 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 [2024-10-15 00:56:31,419 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:31,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:31,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:31,420 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:31,420 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:31,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:31,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:31,423 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:31,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2024-10-15 00:56:31,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,439 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2024-10-15 00:56:31,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2024-10-15 00:56:31,443 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 [2024-10-15 00:56:31,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:31,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:31,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:31,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:31,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:31,454 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:31,454 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:31,456 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:31,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,468 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2024-10-15 00:56:31,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2024-10-15 00:56:31,472 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 [2024-10-15 00:56:31,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:31,483 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:31,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:31,483 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:31,483 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:31,484 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:31,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:31,486 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:31,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2024-10-15 00:56:31,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,501 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2024-10-15 00:56:31,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2024-10-15 00:56:31,503 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 [2024-10-15 00:56:31,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:31,513 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:31,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:31,513 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:31,513 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:31,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:31,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:31,514 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:31,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2024-10-15 00:56:31,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,526 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2024-10-15 00:56:31,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2024-10-15 00:56:31,527 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 [2024-10-15 00:56:31,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:31,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:31,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:31,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:31,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:31,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:31,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:31,540 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-15 00:56:31,542 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-15 00:56:31,542 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-15 00:56:31,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:31,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:31,545 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2024-10-15 00:56:31,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2024-10-15 00:56:31,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-15 00:56:31,547 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-15 00:56:31,547 INFO L474 LassoAnalysis]: Proved termination. [2024-10-15 00:56:31,547 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2024-10-15 00:56:31,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2024-10-15 00:56:31,562 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-15 00:56:31,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:31,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 00:56:31,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:31,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-15 00:56:31,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:56:31,994 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2024-10-15 00:56:31,994 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 116 transitions. cyclomatic complexity: 25 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-15 00:56:32,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2024-10-15 00:56:32,413 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 116 transitions. cyclomatic complexity: 25. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 320 states and 424 transitions. Complement of second has 50 states. [2024-10-15 00:56:32,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-10-15 00:56:32,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-15 00:56:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 72 transitions. [2024-10-15 00:56:32,416 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 72 transitions. Stem has 32 letters. Loop has 26 letters. [2024-10-15 00:56:32,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:32,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 72 transitions. Stem has 58 letters. Loop has 26 letters. [2024-10-15 00:56:32,417 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:32,417 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 72 transitions. Stem has 32 letters. Loop has 52 letters. [2024-10-15 00:56:32,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:32,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 320 states and 424 transitions. [2024-10-15 00:56:32,427 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2024-10-15 00:56:32,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 320 states to 279 states and 379 transitions. [2024-10-15 00:56:32,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 182 [2024-10-15 00:56:32,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2024-10-15 00:56:32,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 279 states and 379 transitions. [2024-10-15 00:56:32,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:32,440 INFO L218 hiAutomatonCegarLoop]: Abstraction has 279 states and 379 transitions. [2024-10-15 00:56:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states and 379 transitions. [2024-10-15 00:56:32,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 246. [2024-10-15 00:56:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 161 states have internal predecessors, (182), 50 states have call successors, (51), 33 states have call predecessors, (51), 40 states have return successors, (93), 51 states have call predecessors, (93), 47 states have call successors, (93) [2024-10-15 00:56:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 326 transitions. [2024-10-15 00:56:32,457 INFO L240 hiAutomatonCegarLoop]: Abstraction has 246 states and 326 transitions. [2024-10-15 00:56:32,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:56:32,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:56:32,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:56:32,458 INFO L87 Difference]: Start difference. First operand 246 states and 326 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-15 00:56:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:56:32,598 INFO L93 Difference]: Finished difference Result 119 states and 142 transitions. [2024-10-15 00:56:32,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 142 transitions. [2024-10-15 00:56:32,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-10-15 00:56:32,601 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 116 states and 139 transitions. [2024-10-15 00:56:32,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 101 [2024-10-15 00:56:32,601 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 101 [2024-10-15 00:56:32,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 139 transitions. [2024-10-15 00:56:32,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:32,602 INFO L218 hiAutomatonCegarLoop]: Abstraction has 116 states and 139 transitions. [2024-10-15 00:56:32,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states and 139 transitions. [2024-10-15 00:56:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-10-15 00:56:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 76 states have (on average 1.131578947368421) internal successors, (86), 80 states have internal predecessors, (86), 20 states have call successors, (20), 15 states have call predecessors, (20), 20 states have return successors, (33), 20 states have call predecessors, (33), 17 states have call successors, (33) [2024-10-15 00:56:32,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2024-10-15 00:56:32,609 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 139 transitions. [2024-10-15 00:56:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-15 00:56:32,610 INFO L425 stractBuchiCegarLoop]: Abstraction has 116 states and 139 transitions. [2024-10-15 00:56:32,611 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-15 00:56:32,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 139 transitions. [2024-10-15 00:56:32,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2024-10-15 00:56:32,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:32,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:32,617 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:32,617 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:32,617 INFO L745 eck$LassoCheckResult]: Stem: 5178#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5161#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5162#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5179#$Ultimate##0 ~n := #in~n; 5182#L10 assume !(~n < 1); 5171#L12 assume !(1 == ~n); 5136#L15 call #t~ret4 := fibo2(~n - 1);< 5192#$Ultimate##0 ~n := #in~n; 5236#L20 assume !(~n < 1); 5135#L22 assume !(1 == ~n); 5137#L25 call #t~ret6 := fibo1(~n - 1);< 5158#$Ultimate##0 ~n := #in~n; 5160#L10 assume !(~n < 1); 5173#L12 assume !(1 == ~n); 5142#L15 call #t~ret4 := fibo2(~n - 1);< 5141#$Ultimate##0 ~n := #in~n; 5143#L20 assume !(~n < 1); 5175#L22 assume !(1 == ~n); 5155#L25 call #t~ret6 := fibo1(~n - 1);< 5158#$Ultimate##0 ~n := #in~n; 5160#L10 assume !(~n < 1); 5173#L12 assume !(1 == ~n); 5142#L15 call #t~ret4 := fibo2(~n - 1);< 5141#$Ultimate##0 ~n := #in~n; 5143#L20 assume !(~n < 1); 5175#L22 assume !(1 == ~n); 5155#L25 call #t~ret6 := fibo1(~n - 1);< 5158#$Ultimate##0 ~n := #in~n; 5159#L10 assume !(~n < 1); 5184#L12 assume 1 == ~n;#res := 1; 5190#fibo1FINAL assume true; 5230#fibo1EXIT >#48#return; 5226#L25-1 call #t~ret7 := fibo1(~n - 2);< 5227#$Ultimate##0 ~n := #in~n; 5232#L10 assume ~n < 1;#res := 0; 5231#fibo1FINAL assume true; 5225#fibo1EXIT >#50#return; 5214#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5213#fibo2FINAL assume true; 5209#fibo2EXIT >#52#return; 5205#L15-1 call #t~ret5 := fibo2(~n - 2);< 5206#$Ultimate##0 ~n := #in~n; 5211#L20 assume ~n < 1;#res := 0; 5208#fibo2FINAL assume true; 5204#fibo2EXIT >#54#return; 5203#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5202#fibo1FINAL assume true; 5197#fibo1EXIT >#48#return; 5148#L25-1 [2024-10-15 00:56:32,617 INFO L747 eck$LassoCheckResult]: Loop: 5148#L25-1 call #t~ret7 := fibo1(~n - 2);< 5166#$Ultimate##0 ~n := #in~n; 5185#L10 assume !(~n < 1); 5183#L12 assume !(1 == ~n); 5145#L15 call #t~ret4 := fibo2(~n - 1);< 5189#$Ultimate##0 ~n := #in~n; 5201#L20 assume !(~n < 1); 5199#L22 assume !(1 == ~n); 5149#L25 call #t~ret6 := fibo1(~n - 1);< 5166#$Ultimate##0 ~n := #in~n; 5185#L10 assume !(~n < 1); 5183#L12 assume !(1 == ~n); 5145#L15 call #t~ret4 := fibo2(~n - 1);< 5189#$Ultimate##0 ~n := #in~n; 5201#L20 assume !(~n < 1); 5199#L22 assume !(1 == ~n); 5149#L25 call #t~ret6 := fibo1(~n - 1);< 5166#$Ultimate##0 ~n := #in~n; 5185#L10 assume !(~n < 1); 5183#L12 assume 1 == ~n;#res := 1; 5170#fibo1FINAL assume true; 5237#fibo1EXIT >#48#return; 5144#L25-1 call #t~ret7 := fibo1(~n - 2);< 5146#$Ultimate##0 ~n := #in~n; 5157#L10 assume ~n < 1;#res := 0; 5147#fibo1FINAL assume true; 5153#fibo1EXIT >#50#return; 5163#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5164#fibo2FINAL assume true; 5216#fibo2EXIT >#52#return; 5133#L15-1 call #t~ret5 := fibo2(~n - 2);< 5215#$Ultimate##0 ~n := #in~n; 5244#L20 assume ~n < 1;#res := 0; 5245#fibo2FINAL assume true; 5246#fibo2EXIT >#54#return; 5210#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5207#fibo1FINAL assume true; 5198#fibo1EXIT >#48#return; 5148#L25-1 [2024-10-15 00:56:32,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:32,618 INFO L85 PathProgramCache]: Analyzing trace with hash 316829921, now seen corresponding path program 1 times [2024-10-15 00:56:32,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:32,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089563765] [2024-10-15 00:56:32,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:32,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:32,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 00:56:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:32,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:32,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:32,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:32,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 00:56:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-15 00:56:32,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:32,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089563765] [2024-10-15 00:56:32,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089563765] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:56:32,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192584456] [2024-10-15 00:56:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:32,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:56:32,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:32,816 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:56:32,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-10-15 00:56:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:32,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 00:56:32,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-15 00:56:32,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:56:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-15 00:56:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192584456] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:56:33,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:56:33,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2024-10-15 00:56:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867501081] [2024-10-15 00:56:33,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:56:33,184 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-15 00:56:33,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1700861918, now seen corresponding path program 1 times [2024-10-15 00:56:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:33,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150204203] [2024-10-15 00:56:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:33,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-15 00:56:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 00:56:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:56:33,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:33,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150204203] [2024-10-15 00:56:33,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150204203] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:56:33,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341876738] [2024-10-15 00:56:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:33,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:56:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:33,307 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:56:33,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-10-15 00:56:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 00:56:33,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-15 00:56:33,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:56:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-15 00:56:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341876738] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:56:33,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:56:33,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2024-10-15 00:56:33,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285297743] [2024-10-15 00:56:33,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:56:33,636 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-15 00:56:33,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:56:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 00:56:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-10-15 00:56:33,637 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. cyclomatic complexity: 25 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-15 00:56:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:56:33,760 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2024-10-15 00:56:33,760 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2024-10-15 00:56:33,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2024-10-15 00:56:33,762 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2024-10-15 00:56:33,762 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2024-10-15 00:56:33,763 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2024-10-15 00:56:33,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2024-10-15 00:56:33,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:33,763 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2024-10-15 00:56:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2024-10-15 00:56:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2024-10-15 00:56:33,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 81 states have internal predecessors, (87), 20 states have call successors, (20), 16 states have call predecessors, (20), 20 states have return successors, (32), 20 states have call predecessors, (32), 17 states have call successors, (32) [2024-10-15 00:56:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2024-10-15 00:56:33,767 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 139 transitions. [2024-10-15 00:56:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:56:33,768 INFO L425 stractBuchiCegarLoop]: Abstraction has 118 states and 139 transitions. [2024-10-15 00:56:33,768 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-10-15 00:56:33,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 139 transitions. [2024-10-15 00:56:33,769 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2024-10-15 00:56:33,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:33,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:33,771 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:33,771 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:33,772 INFO L745 eck$LassoCheckResult]: Stem: 6076#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6057#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 6058#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6078#$Ultimate##0 ~n := #in~n; 6081#L10 assume !(~n < 1); 6069#L12 assume !(1 == ~n); 6042#L15 call #t~ret4 := fibo2(~n - 1);< 6097#$Ultimate##0 ~n := #in~n; 6117#L20 assume !(~n < 1); 6041#L22 assume !(1 == ~n); 6043#L25 call #t~ret6 := fibo1(~n - 1);< 6060#$Ultimate##0 ~n := #in~n; 6063#L10 assume !(~n < 1); 6073#L12 assume !(1 == ~n); 6048#L15 call #t~ret4 := fibo2(~n - 1);< 6047#$Ultimate##0 ~n := #in~n; 6049#L20 assume !(~n < 1); 6075#L22 assume !(1 == ~n); 6061#L25 call #t~ret6 := fibo1(~n - 1);< 6060#$Ultimate##0 ~n := #in~n; 6063#L10 assume !(~n < 1); 6073#L12 assume !(1 == ~n); 6048#L15 call #t~ret4 := fibo2(~n - 1);< 6047#$Ultimate##0 ~n := #in~n; 6049#L20 assume !(~n < 1); 6075#L22 assume !(1 == ~n); 6061#L25 call #t~ret6 := fibo1(~n - 1);< 6060#$Ultimate##0 ~n := #in~n; 6062#L10 assume !(~n < 1); 6091#L12 assume 1 == ~n;#res := 1; 6095#fibo1FINAL assume true; 6144#fibo1EXIT >#48#return; 6051#L25-1 call #t~ret7 := fibo1(~n - 2);< 6143#$Ultimate##0 ~n := #in~n; 6072#L10 assume ~n < 1;#res := 0; 6050#fibo1FINAL assume true; 6052#fibo1EXIT >#50#return; 6139#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6136#fibo2FINAL assume true; 6135#fibo2EXIT >#52#return; 6126#L15-1 call #t~ret5 := fibo2(~n - 2);< 6127#$Ultimate##0 ~n := #in~n; 6134#L20 assume !(~n < 1); 6130#L22 assume 1 == ~n;#res := 1; 6129#fibo2FINAL assume true; 6125#fibo2EXIT >#54#return; 6123#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6108#fibo1FINAL assume true; 6105#fibo1EXIT >#48#return; 6084#L25-1 [2024-10-15 00:56:33,773 INFO L747 eck$LassoCheckResult]: Loop: 6084#L25-1 call #t~ret7 := fibo1(~n - 2);< 6104#$Ultimate##0 ~n := #in~n; 6150#L10 assume !(~n < 1); 6082#L12 assume !(1 == ~n); 6088#L15 call #t~ret4 := fibo2(~n - 1);< 6093#$Ultimate##0 ~n := #in~n; 6092#L20 assume !(~n < 1); 6089#L22 assume !(1 == ~n); 6085#L25 call #t~ret6 := fibo1(~n - 1);< 6066#$Ultimate##0 ~n := #in~n; 6098#L10 assume !(~n < 1); 6082#L12 assume !(1 == ~n); 6088#L15 call #t~ret4 := fibo2(~n - 1);< 6093#$Ultimate##0 ~n := #in~n; 6092#L20 assume !(~n < 1); 6089#L22 assume !(1 == ~n); 6085#L25 call #t~ret6 := fibo1(~n - 1);< 6066#$Ultimate##0 ~n := #in~n; 6098#L10 assume !(~n < 1); 6082#L12 assume 1 == ~n;#res := 1; 6087#fibo1FINAL assume true; 6146#fibo1EXIT >#48#return; 6103#L25-1 call #t~ret7 := fibo1(~n - 2);< 6145#$Ultimate##0 ~n := #in~n; 6149#L10 assume ~n < 1;#res := 0; 6147#fibo1FINAL assume true; 6141#fibo1EXIT >#50#return; 6142#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6140#fibo2FINAL assume true; 6131#fibo2EXIT >#52#return; 6113#L15-1 call #t~ret5 := fibo2(~n - 2);< 6114#$Ultimate##0 ~n := #in~n; 6137#L20 assume !(~n < 1); 6128#L22 assume 1 == ~n;#res := 1; 6124#fibo2FINAL assume true; 6112#fibo2EXIT >#54#return; 6110#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6109#fibo1FINAL assume true; 6106#fibo1EXIT >#48#return; 6084#L25-1 [2024-10-15 00:56:33,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:33,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1955236566, now seen corresponding path program 1 times [2024-10-15 00:56:33,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:33,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739332214] [2024-10-15 00:56:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:33,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 00:56:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 00:56:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,943 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-15 00:56:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739332214] [2024-10-15 00:56:33,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739332214] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:56:33,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144539939] [2024-10-15 00:56:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:33,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:56:33,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:33,948 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:56:33,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-15 00:56:33,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:33,996 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 00:56:33,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-15 00:56:34,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:56:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-15 00:56:34,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144539939] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:56:34,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:56:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2024-10-15 00:56:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744608000] [2024-10-15 00:56:34,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:56:34,301 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-15 00:56:34,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:34,302 INFO L85 PathProgramCache]: Analyzing trace with hash -463668299, now seen corresponding path program 1 times [2024-10-15 00:56:34,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:34,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820103073] [2024-10-15 00:56:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:34,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:34,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:34,307 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:56:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:34,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:56:34,621 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:34,621 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:34,621 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:34,621 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:34,622 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-15 00:56:34,622 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,622 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:34,622 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:34,622 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration8_Loop [2024-10-15 00:56:34,622 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:34,622 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:34,623 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,624 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,626 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,628 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,632 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,633 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,637 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,641 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,686 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:34,686 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-15 00:56:34,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,688 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2024-10-15 00:56:34,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2024-10-15 00:56:34,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:34,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:34,700 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:34,701 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:34,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:34,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,713 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2024-10-15 00:56:34,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2024-10-15 00:56:34,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:34,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:34,725 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:34,725 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:34,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2024-10-15 00:56:34,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,737 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2024-10-15 00:56:34,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2024-10-15 00:56:34,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:34,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:34,751 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:34,751 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=4} Honda state: {fibo2_#in~n=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:34,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2024-10-15 00:56:34,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,763 INFO L229 MonitoredProcess]: Starting monitored process 57 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) [2024-10-15 00:56:34,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2024-10-15 00:56:34,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:34,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:34,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2024-10-15 00:56:34,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,795 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2024-10-15 00:56:34,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2024-10-15 00:56:34,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-15 00:56:34,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:34,810 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-15 00:56:34,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2024-10-15 00:56:34,821 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:34,821 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:34,821 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:34,822 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:34,822 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-15 00:56:34,822 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,822 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:34,822 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:34,822 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration8_Loop [2024-10-15 00:56:34,822 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:34,822 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:34,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,831 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,835 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,836 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,838 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,839 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,841 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:34,879 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:34,879 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-15 00:56:34,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,880 INFO L229 MonitoredProcess]: Starting monitored process 59 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) [2024-10-15 00:56:34,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2024-10-15 00:56:34,882 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 [2024-10-15 00:56:34,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:34,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:34,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:34,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:34,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:34,892 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:34,892 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:34,893 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:34,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:34,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,905 INFO L229 MonitoredProcess]: Starting monitored process 60 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) [2024-10-15 00:56:34,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2024-10-15 00:56:34,908 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 [2024-10-15 00:56:34,918 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:34,918 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:34,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:34,919 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:34,919 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:34,919 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:34,919 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:34,920 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:34,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:34,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,932 INFO L229 MonitoredProcess]: Starting monitored process 61 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) [2024-10-15 00:56:34,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2024-10-15 00:56:34,934 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 [2024-10-15 00:56:34,944 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:34,944 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:34,944 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:34,944 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:34,944 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:34,945 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:34,945 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:34,946 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:34,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2024-10-15 00:56:34,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,958 INFO L229 MonitoredProcess]: Starting monitored process 62 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) [2024-10-15 00:56:34,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2024-10-15 00:56:34,959 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 [2024-10-15 00:56:34,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:34,969 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:34,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:34,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:34,969 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:34,970 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:34,970 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:34,972 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-15 00:56:34,973 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-15 00:56:34,973 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-15 00:56:34,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:34,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:34,975 INFO L229 MonitoredProcess]: Starting monitored process 63 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) [2024-10-15 00:56:34,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2024-10-15 00:56:34,976 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-15 00:56:34,976 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-15 00:56:34,976 INFO L474 LassoAnalysis]: Proved termination. [2024-10-15 00:56:34,976 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2024-10-15 00:56:34,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:34,987 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-15 00:56:34,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:35,050 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 00:56:35,051 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:35,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-15 00:56:35,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:56:35,548 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2024-10-15 00:56:35,549 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 00:56:35,696 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 142 states and 165 transitions. Complement of second has 15 states. [2024-10-15 00:56:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-15 00:56:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 00:56:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2024-10-15 00:56:35,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2024-10-15 00:56:35,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:35,698 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-15 00:56:35,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:35,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 00:56:35,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:35,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:36,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-15 00:56:36,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:56:36,256 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 11 loop predicates [2024-10-15 00:56:36,258 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 00:56:36,444 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 142 states and 165 transitions. Complement of second has 15 states. [2024-10-15 00:56:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-15 00:56:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 00:56:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2024-10-15 00:56:36,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2024-10-15 00:56:36,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:36,446 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-15 00:56:36,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:36,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 00:56:36,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:36,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-15 00:56:36,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:56:36,998 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2024-10-15 00:56:36,998 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 00:56:37,472 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 547 states and 682 transitions. Complement of second has 162 states. [2024-10-15 00:56:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 17 states 2 stem states 14 non-accepting loop states 1 accepting loop states [2024-10-15 00:56:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 00:56:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 84 transitions. [2024-10-15 00:56:37,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 84 transitions. Stem has 49 letters. Loop has 39 letters. [2024-10-15 00:56:37,477 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:37,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 84 transitions. Stem has 88 letters. Loop has 39 letters. [2024-10-15 00:56:37,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:37,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 84 transitions. Stem has 49 letters. Loop has 78 letters. [2024-10-15 00:56:37,482 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:37,482 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 547 states and 682 transitions. [2024-10-15 00:56:37,487 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2024-10-15 00:56:37,490 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 547 states to 396 states and 494 transitions. [2024-10-15 00:56:37,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 225 [2024-10-15 00:56:37,491 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2024-10-15 00:56:37,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 396 states and 494 transitions. [2024-10-15 00:56:37,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:37,491 INFO L218 hiAutomatonCegarLoop]: Abstraction has 396 states and 494 transitions. [2024-10-15 00:56:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states and 494 transitions. [2024-10-15 00:56:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 322. [2024-10-15 00:56:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 208 states have (on average 1.1394230769230769) internal successors, (237), 216 states have internal predecessors, (237), 62 states have call successors, (64), 43 states have call predecessors, (64), 52 states have return successors, (94), 62 states have call predecessors, (94), 59 states have call successors, (94) [2024-10-15 00:56:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 395 transitions. [2024-10-15 00:56:37,501 INFO L240 hiAutomatonCegarLoop]: Abstraction has 322 states and 395 transitions. [2024-10-15 00:56:37,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:56:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 00:56:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:56:37,502 INFO L87 Difference]: Start difference. First operand 322 states and 395 transitions. Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2024-10-15 00:56:37,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:56:37,763 INFO L93 Difference]: Finished difference Result 216 states and 234 transitions. [2024-10-15 00:56:37,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 216 states and 234 transitions. [2024-10-15 00:56:37,765 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2024-10-15 00:56:37,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 216 states to 120 states and 130 transitions. [2024-10-15 00:56:37,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 98 [2024-10-15 00:56:37,768 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2024-10-15 00:56:37,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 130 transitions. [2024-10-15 00:56:37,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-15 00:56:37,768 INFO L218 hiAutomatonCegarLoop]: Abstraction has 120 states and 130 transitions. [2024-10-15 00:56:37,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states and 130 transitions. [2024-10-15 00:56:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2024-10-15 00:56:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 84 states have internal predecessors, (90), 21 states have call successors, (21), 18 states have call predecessors, (21), 17 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2024-10-15 00:56:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2024-10-15 00:56:37,772 INFO L240 hiAutomatonCegarLoop]: Abstraction has 119 states and 129 transitions. [2024-10-15 00:56:37,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 00:56:37,773 INFO L425 stractBuchiCegarLoop]: Abstraction has 119 states and 129 transitions. [2024-10-15 00:56:37,773 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-10-15 00:56:37,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 119 states and 129 transitions. [2024-10-15 00:56:37,774 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2024-10-15 00:56:37,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-15 00:56:37,774 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-15 00:56:37,775 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:37,775 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:56:37,777 INFO L745 eck$LassoCheckResult]: Stem: 9029#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 9011#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 9012#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 9030#$Ultimate##0 ~n := #in~n; 9024#L10 assume !(~n < 1); 9025#L12 assume !(1 == ~n); 8997#L15 call #t~ret4 := fibo2(~n - 1);< 8996#$Ultimate##0 ~n := #in~n; 8998#L20 assume !(~n < 1); 9027#L22 assume !(1 == ~n); 9008#L25 call #t~ret6 := fibo1(~n - 1);< 9007#$Ultimate##0 ~n := #in~n; 9009#L10 assume !(~n < 1); 9020#L12 assume !(1 == ~n); 8992#L15 call #t~ret4 := fibo2(~n - 1);< 9044#$Ultimate##0 ~n := #in~n; 9056#L20 assume !(~n < 1); 8991#L22 assume !(1 == ~n); 8993#L25 call #t~ret6 := fibo1(~n - 1);< 9007#$Ultimate##0 ~n := #in~n; 9010#L10 assume !(~n < 1); 9057#L12 assume 1 == ~n;#res := 1; 9055#fibo1FINAL assume true; 9051#fibo1EXIT >#48#return; 9049#L25-1 call #t~ret7 := fibo1(~n - 2);< 9050#$Ultimate##0 ~n := #in~n; 9053#L10 assume ~n < 1;#res := 0; 9052#fibo1FINAL assume true; 9048#fibo1EXIT >#50#return; 9047#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 9046#fibo2FINAL assume true; 9042#fibo2EXIT >#52#return; 9043#L15-1 call #t~ret5 := fibo2(~n - 2);< 9066#$Ultimate##0 ~n := #in~n; 9069#L20 assume !(~n < 1); 9068#L22 assume 1 == ~n;#res := 1; 9067#fibo2FINAL assume true; 9065#fibo2EXIT >#54#return; 9064#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 9063#fibo1FINAL assume true; 9062#fibo1EXIT >#48#return; 9032#L25-1 call #t~ret7 := fibo1(~n - 2);< 9061#$Ultimate##0 ~n := #in~n; 9088#L10 assume !(~n < 1); 9087#L12 assume !(1 == ~n); 9022#L15 call #t~ret4 := fibo2(~n - 1);< 9045#$Ultimate##0 ~n := #in~n; 9100#L20 assume !(~n < 1); 9099#L22 assume !(1 == ~n); 9026#L25 call #t~ret6 := fibo1(~n - 1);< 9102#$Ultimate##0 ~n := #in~n; 9106#L10 assume !(~n < 1); 9104#L12 assume !(1 == ~n); 8989#L15 [2024-10-15 00:56:37,778 INFO L747 eck$LassoCheckResult]: Loop: 8989#L15 call #t~ret4 := fibo2(~n - 1);< 8994#$Ultimate##0 ~n := #in~n; 8995#L20 assume !(~n < 1); 8988#L22 assume !(1 == ~n); 8990#L25 call #t~ret6 := fibo1(~n - 1);< 9015#$Ultimate##0 ~n := #in~n; 9077#L10 assume !(~n < 1); 9071#L12 assume !(1 == ~n); 8989#L15 [2024-10-15 00:56:37,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:37,778 INFO L85 PathProgramCache]: Analyzing trace with hash -259516613, now seen corresponding path program 2 times [2024-10-15 00:56:37,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:37,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568841639] [2024-10-15 00:56:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:37,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:37,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 00:56:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:37,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:37,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-15 00:56:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:37,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 00:56:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:37,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 00:56:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-15 00:56:37,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:56:37,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568841639] [2024-10-15 00:56:37,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568841639] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:56:37,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857877065] [2024-10-15 00:56:37,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:56:37,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:56:37,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:37,906 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:56:37,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-10-15 00:56:37,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:56:37,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:56:37,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 00:56:37,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-15 00:56:38,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:56:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-15 00:56:38,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857877065] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:56:38,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:56:38,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2024-10-15 00:56:38,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987996265] [2024-10-15 00:56:38,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:56:38,125 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-15 00:56:38,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 2 times [2024-10-15 00:56:38,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:56:38,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250788389] [2024-10-15 00:56:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:56:38,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:56:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:38,129 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-15 00:56:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-15 00:56:38,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-15 00:56:38,259 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:38,259 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:38,259 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:38,259 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:38,259 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-15 00:56:38,259 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:38,259 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:38,259 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:38,259 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2024-10-15 00:56:38,259 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:38,259 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:38,260 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:38,262 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:38,264 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:38,265 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:38,267 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:38,276 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:38,278 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:38,280 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:38,331 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:38,331 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-15 00:56:38,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:38,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:38,336 INFO L229 MonitoredProcess]: Starting monitored process 65 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) [2024-10-15 00:56:38,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2024-10-15 00:56:38,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:38,339 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:38,351 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:38,351 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:38,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:38,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:38,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:38,362 INFO L229 MonitoredProcess]: Starting monitored process 66 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) [2024-10-15 00:56:38,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2024-10-15 00:56:38,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:38,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:38,374 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:38,374 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:38,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:38,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:38,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:38,386 INFO L229 MonitoredProcess]: Starting monitored process 67 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) [2024-10-15 00:56:38,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2024-10-15 00:56:38,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:38,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:38,398 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:38,398 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:38,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2024-10-15 00:56:38,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:38,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:38,410 INFO L229 MonitoredProcess]: Starting monitored process 68 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) [2024-10-15 00:56:38,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2024-10-15 00:56:38,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:38,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:38,422 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-15 00:56:38,422 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-15 00:56:38,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2024-10-15 00:56:38,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:38,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:38,434 INFO L229 MonitoredProcess]: Starting monitored process 69 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) [2024-10-15 00:56:38,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2024-10-15 00:56:38,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-15 00:56:38,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:38,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:38,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:38,466 INFO L229 MonitoredProcess]: Starting monitored process 70 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) [2024-10-15 00:56:38,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2024-10-15 00:56:38,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-15 00:56:38,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-15 00:56:39,001 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-15 00:56:39,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:39,006 INFO L204 LassoAnalysis]: Preferences: [2024-10-15 00:56:39,006 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-15 00:56:39,006 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-15 00:56:39,006 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-15 00:56:39,006 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-15 00:56:39,006 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:39,006 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-15 00:56:39,006 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-15 00:56:39,006 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2024-10-15 00:56:39,006 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-15 00:56:39,006 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-15 00:56:39,007 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:39,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:39,011 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:39,012 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:39,014 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:39,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:39,025 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:39,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-15 00:56:39,062 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-15 00:56:39,062 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-15 00:56:39,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:39,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:39,063 INFO L229 MonitoredProcess]: Starting monitored process 71 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) [2024-10-15 00:56:39,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2024-10-15 00:56:39,065 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 [2024-10-15 00:56:39,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:39,075 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:39,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:39,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:39,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:39,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:39,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:39,076 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:39,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2024-10-15 00:56:39,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:39,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:39,088 INFO L229 MonitoredProcess]: Starting monitored process 72 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) [2024-10-15 00:56:39,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2024-10-15 00:56:39,090 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 [2024-10-15 00:56:39,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:39,099 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:39,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:39,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:39,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:39,100 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:39,100 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:39,101 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:39,111 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2024-10-15 00:56:39,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:39,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:39,113 INFO L229 MonitoredProcess]: Starting monitored process 73 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) [2024-10-15 00:56:39,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2024-10-15 00:56:39,114 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 [2024-10-15 00:56:39,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:39,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:39,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:39,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:39,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:39,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:39,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:39,126 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:39,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2024-10-15 00:56:39,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:39,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:39,137 INFO L229 MonitoredProcess]: Starting monitored process 74 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) [2024-10-15 00:56:39,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2024-10-15 00:56:39,139 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 [2024-10-15 00:56:39,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:39,149 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:39,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:39,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:39,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:39,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:39,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:39,150 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-15 00:56:39,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2024-10-15 00:56:39,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:39,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:39,161 INFO L229 MonitoredProcess]: Starting monitored process 75 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) [2024-10-15 00:56:39,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2024-10-15 00:56:39,163 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 [2024-10-15 00:56:39,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-15 00:56:39,172 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-15 00:56:39,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-15 00:56:39,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-15 00:56:39,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-15 00:56:39,173 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-15 00:56:39,173 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-15 00:56:39,175 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-15 00:56:39,177 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-15 00:56:39,177 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-15 00:56:39,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-15 00:56:39,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:56:39,179 INFO L229 MonitoredProcess]: Starting monitored process 76 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) [2024-10-15 00:56:39,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2024-10-15 00:56:39,180 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-15 00:56:39,180 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-15 00:56:39,180 INFO L474 LassoAnalysis]: Proved termination. [2024-10-15 00:56:39,180 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2024-10-15 00:56:39,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2024-10-15 00:56:39,190 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-15 00:56:39,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:39,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 00:56:39,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:39,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 00:56:39,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:56:39,550 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-10-15 00:56:39,550 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 119 states and 129 transitions. cyclomatic complexity: 13 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 00:56:39,607 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 119 states and 129 transitions. cyclomatic complexity: 13. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 131 states and 142 transitions. Complement of second has 19 states. [2024-10-15 00:56:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-15 00:56:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 00:56:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2024-10-15 00:56:39,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 53 letters. Loop has 8 letters. [2024-10-15 00:56:39,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:39,608 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-15 00:56:39,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:39,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 00:56:39,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:39,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 00:56:39,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:39,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:56:40,010 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2024-10-15 00:56:40,010 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 119 states and 129 transitions. cyclomatic complexity: 13 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 00:56:40,132 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 119 states and 129 transitions. cyclomatic complexity: 13. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 140 states and 152 transitions. Complement of second has 23 states. [2024-10-15 00:56:40,133 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 [2024-10-15 00:56:40,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 00:56:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2024-10-15 00:56:40,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 53 letters. Loop has 8 letters. [2024-10-15 00:56:40,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:40,134 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-15 00:56:40,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:56:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:40,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 00:56:40,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:56:40,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-15 00:56:40,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:56:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:56:40,495 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-10-15 00:56:40,495 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 119 states and 129 transitions. cyclomatic complexity: 13 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 00:56:40,608 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 119 states and 129 transitions. cyclomatic complexity: 13. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 191 states and 207 transitions. Complement of second has 28 states. [2024-10-15 00:56:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-10-15 00:56:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 00:56:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2024-10-15 00:56:40,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 53 letters. Loop has 8 letters. [2024-10-15 00:56:40,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:40,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 61 letters. Loop has 8 letters. [2024-10-15 00:56:40,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:40,611 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 53 letters. Loop has 16 letters. [2024-10-15 00:56:40,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-15 00:56:40,611 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 207 transitions. [2024-10-15 00:56:40,616 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-15 00:56:40,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 0 states and 0 transitions. [2024-10-15 00:56:40,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-15 00:56:40,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-15 00:56:40,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-15 00:56:40,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-15 00:56:40,617 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:56:40,617 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:56:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:56:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:56:40,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:56:40,618 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-10-15 00:56:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 00:56:40,618 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-10-15 00:56:40,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-10-15 00:56:40,618 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-15 00:56:40,618 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 00:56:40,618 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-15 00:56:40,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-15 00:56:40,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-15 00:56:40,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-15 00:56:40,618 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:56:40,618 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:56:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 00:56:40,619 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 00:56:40,619 INFO L332 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2024-10-15 00:56:40,619 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-15 00:56:40,619 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-15 00:56:40,619 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-15 00:56:40,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 12:56:40 BoogieIcfgContainer [2024-10-15 00:56:40,630 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-15 00:56:40,631 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 00:56:40,631 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 00:56:40,631 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 00:56:40,632 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:56:22" (3/4) ... [2024-10-15 00:56:40,634 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-15 00:56:40,635 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 00:56:40,635 INFO L158 Benchmark]: Toolchain (without parser) took 18403.96ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 99.6MB in the beginning and 131.3MB in the end (delta: -31.7MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2024-10-15 00:56:40,635 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:56:40,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.24ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 88.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 00:56:40,636 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.71ms. Allocated memory is still 167.8MB. Free memory was 88.3MB in the beginning and 86.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 00:56:40,636 INFO L158 Benchmark]: Boogie Preprocessor took 37.05ms. Allocated memory is still 167.8MB. Free memory was 86.8MB in the beginning and 85.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:56:40,636 INFO L158 Benchmark]: RCFGBuilder took 286.78ms. Allocated memory is still 167.8MB. Free memory was 85.2MB in the beginning and 137.0MB in the end (delta: -51.8MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-10-15 00:56:40,636 INFO L158 Benchmark]: BuchiAutomizer took 17801.99ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 137.0MB in the beginning and 132.3MB in the end (delta: 4.7MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. [2024-10-15 00:56:40,636 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 243.3MB. Free memory was 132.3MB in the beginning and 131.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 00:56:40,637 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 117.4MB. Free memory is still 79.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.24ms. Allocated memory is still 167.8MB. Free memory was 99.4MB in the beginning and 88.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.71ms. Allocated memory is still 167.8MB. Free memory was 88.3MB in the beginning and 86.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.05ms. Allocated memory is still 167.8MB. Free memory was 86.8MB in the beginning and 85.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 286.78ms. Allocated memory is still 167.8MB. Free memory was 85.2MB in the beginning and 137.0MB in the end (delta: -51.8MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 17801.99ms. Allocated memory was 167.8MB in the beginning and 243.3MB in the end (delta: 75.5MB). Free memory was 137.0MB in the beginning and 132.3MB in the end (delta: 4.7MB). Peak memory consumption was 81.0MB. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 243.3MB. Free memory was 132.3MB in the beginning and 131.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 13 terminating modules (8 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 8 locations. One deterministic module has affine ranking function n and consists of 14 locations. One deterministic module has affine ranking function n and consists of 14 locations. One nondeterministic module has affine ranking function n and consists of 17 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 17.7s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 10.3s. Construction of modules took 1.4s. Büchi inclusion checks took 5.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 170 StatesRemovedByMinimization, 9 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 [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/51 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 619 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 592 mSDsluCounter, 1392 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1049 mSDsCounter, 364 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2385 IncrementalHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 364 mSolverCounterUnsat, 343 mSDtfsCounter, 2385 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI4 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf90 smp81 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-15 00:56:40,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:40,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-10-15 00:56:41,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-10-15 00:56:41,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-10-15 00:56:41,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:41,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-10-15 00:56:41,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:42,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-10-15 00:56:42,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-15 00:56:42,460 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