./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_7-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version fca748b1 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_7-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:55:17,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:55:17,442 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-20 22:55:17,445 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:55:17,446 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:55:17,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:55:17,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:55:17,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:55:17,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:55:17,464 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:55:17,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:55:17,465 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:55:17,465 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:55:17,465 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-20 22:55:17,465 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-20 22:55:17,466 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-20 22:55:17,466 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-20 22:55:17,466 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-20 22:55:17,467 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-20 22:55:17,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:55:17,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-20 22:55:17,468 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:55:17,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:55:17,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:55:17,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:55:17,469 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-20 22:55:17,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-20 22:55:17,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-20 22:55:17,470 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:55:17,470 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:55:17,470 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:55:17,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:55:17,471 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-20 22:55:17,471 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:55:17,471 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:55:17,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:55:17,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:55:17,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:55:17,472 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-20 22:55:17,472 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 [2024-11-20 22:55:17,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:55:17,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:55:17,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:55:17,721 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:55:17,721 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:55:17,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2024-11-20 22:55:19,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:55:19,267 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:55:19,268 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2024-11-20 22:55:19,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048c32e5c/54f4ce6c430e48c2bfea42c01bf2aec9/FLAG35b343b1c [2024-11-20 22:55:19,292 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048c32e5c/54f4ce6c430e48c2bfea42c01bf2aec9 [2024-11-20 22:55:19,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:55:19,297 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:55:19,299 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:55:19,300 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:55:19,304 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:55:19,305 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@699ea4b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19, skipping insertion in model container [2024-11-20 22:55:19,309 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,325 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:55:19,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:55:19,490 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:55:19,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:55:19,513 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:55:19,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19 WrapperNode [2024-11-20 22:55:19,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:55:19,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:55:19,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:55:19,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:55:19,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,537 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-20 22:55:19,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:55:19,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:55:19,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:55:19,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:55:19,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,548 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,556 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]. [2024-11-20 22:55:19,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,567 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,568 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:55:19,569 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:55:19,569 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:55:19,569 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:55:19,570 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (1/1) ... [2024-11-20 22:55:19,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:19,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:19,603 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) [2024-11-20 22:55:19,606 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 [2024-11-20 22:55:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:55:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:55:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:55:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:55:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-20 22:55:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-20 22:55:19,757 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:55:19,759 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:55:19,824 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-20 22:55:19,824 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:55:19,832 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:55:19,832 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 22:55:19,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:19 BoogieIcfgContainer [2024-11-20 22:55:19,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:55:19,833 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-20 22:55:19,833 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-20 22:55:19,839 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-20 22:55:19,840 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:55:19,840 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:55:19" (1/3) ... [2024-11-20 22:55:19,844 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e878886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:55:19, skipping insertion in model container [2024-11-20 22:55:19,844 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:55:19,844 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:55:19" (2/3) ... [2024-11-20 22:55:19,844 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e878886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:55:19, skipping insertion in model container [2024-11-20 22:55:19,844 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:55:19,844 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:19" (3/3) ... [2024-11-20 22:55:19,845 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_7-2.c [2024-11-20 22:55:19,897 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-20 22:55:19,897 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-20 22:55:19,897 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-20 22:55:19,897 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-20 22:55:19,897 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-20 22:55:19,897 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-20 22:55:19,897 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-20 22:55:19,898 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-20 22:55:19,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 22:55:19,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-20 22:55:19,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:19,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:19,922 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-20 22:55:19,922 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-20 22:55:19,922 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-20 22:55:19,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 22:55:19,925 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-20 22:55:19,925 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:19,926 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:19,926 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-20 22:55:19,926 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-20 22:55:19,931 INFO L745 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2024-11-20 22:55:19,932 INFO L747 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2024-11-20 22:55:19,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2024-11-20 22:55:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:19,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192401546] [2024-11-20 22:55:19,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:19,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:20,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:20,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:20,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:20,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2024-11-20 22:55:20,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:20,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687904992] [2024-11-20 22:55:20,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:20,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:20,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:20,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:20,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:20,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2024-11-20 22:55:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:20,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486875741] [2024-11-20 22:55:20,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:20,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:20,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:20,206 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:20,207 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:20,207 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:20,207 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:20,207 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:55:20,208 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,208 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:20,208 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:20,208 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2024-11-20 22:55:20,208 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:20,208 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:20,221 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,229 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,245 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,305 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:20,306 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:55:20,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,316 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) [2024-11-20 22:55:20,318 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 [2024-11-20 22:55:20,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:20,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:20,336 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:20,336 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:20,344 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 [2024-11-20 22:55:20,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,347 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) [2024-11-20 22:55:20,351 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 [2024-11-20 22:55:20,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:20,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:20,366 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:20,366 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:20,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-20 22:55:20,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,376 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) [2024-11-20 22:55:20,378 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 [2024-11-20 22:55:20,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:20,379 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:20,392 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:20,392 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:20,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-20 22:55:20,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,408 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) [2024-11-20 22:55:20,409 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 [2024-11-20 22:55:20,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:20,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:20,429 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 [2024-11-20 22:55:20,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,432 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) [2024-11-20 22:55:20,434 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 [2024-11-20 22:55:20,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:55:20,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:20,484 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:55:20,489 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 [2024-11-20 22:55:20,489 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:20,490 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:20,490 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:20,490 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:20,490 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:55:20,490 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,490 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:20,491 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:20,491 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2024-11-20 22:55:20,491 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:20,491 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:20,493 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,496 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,500 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,504 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,513 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:20,554 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:20,558 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:55:20,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,561 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) [2024-11-20 22:55:20,562 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 [2024-11-20 22:55:20,563 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 [2024-11-20 22:55:20,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:20,576 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:20,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:20,578 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:20,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:20,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:20,584 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:20,587 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:20,598 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 [2024-11-20 22:55:20,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,603 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) [2024-11-20 22:55:20,605 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 [2024-11-20 22:55:20,608 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 [2024-11-20 22:55:20,620 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:20,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:20,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:20,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:20,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:20,622 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:20,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:20,624 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:20,631 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 [2024-11-20 22:55:20,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,636 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) [2024-11-20 22:55:20,638 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 [2024-11-20 22:55:20,639 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 [2024-11-20 22:55:20,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:20,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:20,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:20,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:20,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:20,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:20,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:20,653 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:20,659 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 [2024-11-20 22:55:20,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,661 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) [2024-11-20 22:55:20,663 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 [2024-11-20 22:55:20,663 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 [2024-11-20 22:55:20,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:20,675 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:20,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:20,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:20,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:20,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:20,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:20,679 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:55:20,682 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:55:20,683 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-20 22:55:20,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:20,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:20,685 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) [2024-11-20 22:55:20,686 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 [2024-11-20 22:55:20,687 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:55:20,687 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:55:20,688 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:55:20,688 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-11-20 22:55:20,695 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 [2024-11-20 22:55:20,698 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:55:20,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:20,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:55:20,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:20,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:55:20,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:20,826 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-20 22:55:20,827 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:55:20,901 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 54 transitions. Complement of second has 16 states. [2024-11-20 22:55:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:20,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:55:20,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-11-20 22:55:20,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-20 22:55:20,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:20,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-20 22:55:20,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:20,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-20 22:55:20,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:20,913 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2024-11-20 22:55:20,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-20 22:55:20,921 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 23 states and 31 transitions. [2024-11-20 22:55:20,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-11-20 22:55:20,922 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-11-20 22:55:20,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-11-20 22:55:20,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:20,924 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-11-20 22:55:20,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-11-20 22:55:20,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-11-20 22:55:20,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 22:55:20,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-20 22:55:20,948 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-20 22:55:20,948 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-20 22:55:20,949 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-20 22:55:20,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-11-20 22:55:20,950 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-20 22:55:20,950 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:20,950 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:20,951 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:20,951 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:20,951 INFO L745 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 121#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 120#$Ultimate##0 ~n := #in~n; 122#L8 assume !(~n < 1); 134#L10 assume !(1 == ~n); 124#L13 call #t~ret4 := fibo(~n - 1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 132#fiboEXIT >#35#return; 127#L13-1 [2024-11-20 22:55:20,951 INFO L747 eck$LassoCheckResult]: Loop: 127#L13-1 call #t~ret5 := fibo(~n - 2);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 137#fiboEXIT >#35#return; 127#L13-1 [2024-11-20 22:55:20,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:20,952 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2024-11-20 22:55:20,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:20,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151547357] [2024-11-20 22:55:20,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:20,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:21,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 22:55:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:55:21,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:21,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151547357] [2024-11-20 22:55:21,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151547357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:55:21,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:55:21,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 22:55:21,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085271411] [2024-11-20 22:55:21,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:55:21,074 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:21,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2024-11-20 22:55:21,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:21,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863427030] [2024-11-20 22:55:21,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:21,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:21,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 22:55:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:55:21,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:21,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863427030] [2024-11-20 22:55:21,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863427030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:55:21,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:55:21,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 22:55:21,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278139629] [2024-11-20 22:55:21,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:55:21,183 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-20 22:55:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:21,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:55:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 22:55:21,187 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 22:55:21,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:21,264 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-20 22:55:21,264 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-11-20 22:55:21,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-20 22:55:21,266 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-11-20 22:55:21,266 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-11-20 22:55:21,266 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-11-20 22:55:21,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-11-20 22:55:21,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:21,266 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-20 22:55:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-11-20 22:55:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-20 22:55:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-20 22:55:21,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-20 22:55:21,274 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-20 22:55:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:55:21,276 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-20 22:55:21,277 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-20 22:55:21,277 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-11-20 22:55:21,278 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-20 22:55:21,278 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:21,278 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:21,280 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:21,280 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:21,280 INFO L745 eck$LassoCheckResult]: Stem: 205#$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(11, 2);call #Ultimate.allocInit(12, 3); 206#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 199#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 202#$Ultimate##0 ~n := #in~n; 197#L8 assume !(~n < 1); 208#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 195#$Ultimate##0 ~n := #in~n; 198#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 213#fiboFINAL assume true; 211#fiboEXIT >#35#return; 192#L13-1 [2024-11-20 22:55:21,280 INFO L747 eck$LassoCheckResult]: Loop: 192#L13-1 call #t~ret5 := fibo(~n - 2);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume !(1 == ~n); 193#L13 call #t~ret4 := fibo(~n - 1);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume 1 == ~n;#res := 1; 209#fiboFINAL assume true; 210#fiboEXIT >#35#return; 192#L13-1 [2024-11-20 22:55:21,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2024-11-20 22:55:21,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:21,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972568138] [2024-11-20 22:55:21,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:21,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:21,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 22:55:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:21,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:21,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972568138] [2024-11-20 22:55:21,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972568138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:21,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612540436] [2024-11-20 22:55:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:21,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:21,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:21,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:21,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 22:55:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:21,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:55:21,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:21,470 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 [2024-11-20 22:55:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:21,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612540436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:21,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:21,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 22:55:21,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910490687] [2024-11-20 22:55:21,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:21,612 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:21,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2024-11-20 22:55:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:21,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573473231] [2024-11-20 22:55:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:21,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:21,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:21,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:21,724 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:21,724 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:21,724 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:21,724 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:21,724 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:55:21,724 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:21,725 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:21,725 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:21,725 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2024-11-20 22:55:21,725 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:21,725 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:21,725 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:21,727 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:21,729 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:21,735 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:21,739 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:21,785 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:21,785 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:55:21,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:21,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:21,788 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) [2024-11-20 22:55:21,789 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 [2024-11-20 22:55:21,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:21,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:21,804 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:21,804 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:21,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:21,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:21,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:21,813 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) [2024-11-20 22:55:21,814 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 [2024-11-20 22:55:21,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:21,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:21,828 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:21,828 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:21,835 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 [2024-11-20 22:55:21,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:21,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:21,837 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) [2024-11-20 22:55:21,838 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 [2024-11-20 22:55:21,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:21,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:21,855 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:21,857 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:21,872 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 [2024-11-20 22:55:21,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:21,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:21,877 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) [2024-11-20 22:55:21,879 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 [2024-11-20 22:55:21,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:21,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:21,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-20 22:55:21,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:21,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:21,921 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) [2024-11-20 22:55:21,923 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 [2024-11-20 22:55:21,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:55:21,924 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:21,948 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:55:21,958 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 [2024-11-20 22:55:21,958 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:21,958 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:21,958 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:21,958 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:21,958 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:55:21,959 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:21,959 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:21,959 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:21,959 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2024-11-20 22:55:21,959 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:21,959 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:21,959 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:21,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:21,968 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:21,970 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:21,972 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:22,026 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:22,027 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:55:22,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:22,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:22,028 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:22,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-20 22:55:22,067 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 [2024-11-20 22:55:22,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:22,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:22,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:22,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:22,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:22,079 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:22,079 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:22,084 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:22,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:22,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:22,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:22,118 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) [2024-11-20 22:55:22,119 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 [2024-11-20 22:55:22,121 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 [2024-11-20 22:55:22,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:22,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:22,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:22,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:22,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:22,138 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:22,138 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:22,140 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:22,146 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 [2024-11-20 22:55:22,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:22,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:22,148 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) [2024-11-20 22:55:22,150 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 [2024-11-20 22:55:22,150 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 [2024-11-20 22:55:22,162 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:22,162 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:22,162 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:22,162 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:22,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:22,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:22,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:22,165 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:22,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-20 22:55:22,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:22,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:22,177 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) [2024-11-20 22:55:22,179 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 [2024-11-20 22:55:22,179 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 [2024-11-20 22:55:22,191 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:22,191 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:22,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:22,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:22,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:22,192 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:22,192 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:22,197 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:22,205 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 [2024-11-20 22:55:22,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:22,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:22,209 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) [2024-11-20 22:55:22,210 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 [2024-11-20 22:55:22,211 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 [2024-11-20 22:55:22,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:22,221 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:22,223 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:22,223 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:22,223 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:22,224 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:22,226 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:22,228 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:55:22,230 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:55:22,230 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-20 22:55:22,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:22,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:22,236 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) [2024-11-20 22:55:22,238 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 [2024-11-20 22:55:22,238 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:55:22,238 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:55:22,238 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:55:22,238 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-20 22:55:22,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-20 22:55:22,247 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:55:22,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:22,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:55:22,282 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:22,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 22:55:22,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:22,450 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 [2024-11-20 22:55:22,450 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 22:55:22,659 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 128 states and 178 transitions. Complement of second has 40 states. [2024-11-20 22:55:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 22:55:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-20 22:55:22,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2024-11-20 22:55:22,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:22,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2024-11-20 22:55:22,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:22,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2024-11-20 22:55:22,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:22,663 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2024-11-20 22:55:22,668 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-20 22:55:22,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2024-11-20 22:55:22,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2024-11-20 22:55:22,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2024-11-20 22:55:22,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2024-11-20 22:55:22,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:22,671 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2024-11-20 22:55:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2024-11-20 22:55:22,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2024-11-20 22:55:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (35), 18 states have call predecessors, (35), 19 states have call successors, (35) [2024-11-20 22:55:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2024-11-20 22:55:22,680 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2024-11-20 22:55:22,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:22,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 22:55:22,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-20 22:55:22,681 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 22:55:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:22,793 INFO L93 Difference]: Finished difference Result 119 states and 163 transitions. [2024-11-20 22:55:22,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 163 transitions. [2024-11-20 22:55:22,796 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-20 22:55:22,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 158 transitions. [2024-11-20 22:55:22,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2024-11-20 22:55:22,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2024-11-20 22:55:22,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 158 transitions. [2024-11-20 22:55:22,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:22,799 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-11-20 22:55:22,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 158 transitions. [2024-11-20 22:55:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-11-20 22:55:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (39), 20 states have call predecessors, (39), 22 states have call successors, (39) [2024-11-20 22:55:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2024-11-20 22:55:22,807 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-20 22:55:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 22:55:22,808 INFO L425 stractBuchiCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-20 22:55:22,808 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-20 22:55:22,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 143 transitions. [2024-11-20 22:55:22,809 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-20 22:55:22,809 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:22,809 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:22,814 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:22,814 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1] [2024-11-20 22:55:22,814 INFO L745 eck$LassoCheckResult]: Stem: 806#$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(11, 2);call #Ultimate.allocInit(12, 3); 807#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 792#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 793#$Ultimate##0 ~n := #in~n; 809#L8 assume !(~n < 1); 810#L10 assume !(1 == ~n); 780#L13 call #t~ret4 := fibo(~n - 1);< 779#$Ultimate##0 ~n := #in~n; 781#L8 assume !(~n < 1); 816#L10 assume !(1 == ~n); 790#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 839#L8 assume !(~n < 1); 837#L10 assume 1 == ~n;#res := 1; 835#fiboFINAL assume true; 834#fiboEXIT >#35#return; 817#L13-1 call #t~ret5 := fibo(~n - 2);< 833#$Ultimate##0 ~n := #in~n; 879#L8 assume ~n < 1;#res := 0; 878#fiboFINAL assume true; 877#fiboEXIT >#37#return; 875#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 872#fiboFINAL assume true; 864#fiboEXIT >#35#return; 813#L13-1 [2024-11-20 22:55:22,814 INFO L747 eck$LassoCheckResult]: Loop: 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#35#return; 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#37#return; 862#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 871#fiboFINAL assume true; 865#fiboEXIT >#35#return; 813#L13-1 [2024-11-20 22:55:22,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:22,815 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2024-11-20 22:55:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:22,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488609158] [2024-11-20 22:55:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:22,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 22:55:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:22,938 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 [2024-11-20 22:55:22,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 22:55:23,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:23,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488609158] [2024-11-20 22:55:23,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488609158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:23,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059467409] [2024-11-20 22:55:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:23,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:23,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:23,025 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:23,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-20 22:55:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 22:55:23,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:23,113 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 22:55:23,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:55:23,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059467409] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:23,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:23,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 18 [2024-11-20 22:55:23,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849840966] [2024-11-20 22:55:23,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:23,341 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:23,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1138642743, now seen corresponding path program 1 times [2024-11-20 22:55:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:23,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36263404] [2024-11-20 22:55:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:23,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-20 22:55:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-20 22:55:23,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:23,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36263404] [2024-11-20 22:55:23,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36263404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:23,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770088128] [2024-11-20 22:55:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:23,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:23,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:23,434 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:23,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-20 22:55:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 22:55:23,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 22:55:23,490 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 22:55:23,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770088128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:23,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:23,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-20 22:55:23,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551077268] [2024-11-20 22:55:23,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:23,609 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-20 22:55:23,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:23,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 22:55:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 22:55:23,610 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 22:55:23,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:23,688 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2024-11-20 22:55:23,688 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 76 transitions. [2024-11-20 22:55:23,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-20 22:55:23,690 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 54 states and 70 transitions. [2024-11-20 22:55:23,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2024-11-20 22:55:23,690 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2024-11-20 22:55:23,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 70 transitions. [2024-11-20 22:55:23,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:23,690 INFO L218 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-11-20 22:55:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 70 transitions. [2024-11-20 22:55:23,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-20 22:55:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-20 22:55:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-11-20 22:55:23,695 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-11-20 22:55:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 22:55:23,696 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-11-20 22:55:23,696 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-20 22:55:23,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 70 transitions. [2024-11-20 22:55:23,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-20 22:55:23,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:23,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:23,698 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:23,698 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-20 22:55:23,698 INFO L745 eck$LassoCheckResult]: Stem: 1373#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1374#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 1367#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1368#$Ultimate##0 ~n := #in~n; 1383#L8 assume !(~n < 1); 1382#L10 assume !(1 == ~n); 1355#L13 call #t~ret4 := fibo(~n - 1);< 1354#$Ultimate##0 ~n := #in~n; 1356#L8 assume !(~n < 1); 1376#L10 assume !(1 == ~n); 1360#L13 call #t~ret4 := fibo(~n - 1);< 1361#$Ultimate##0 ~n := #in~n; 1381#L8 assume !(~n < 1); 1398#L10 assume !(1 == ~n); 1371#L13 call #t~ret4 := fibo(~n - 1);< 1361#$Ultimate##0 ~n := #in~n; 1381#L8 assume !(~n < 1); 1398#L10 assume !(1 == ~n); 1371#L13 call #t~ret4 := fibo(~n - 1);< 1361#$Ultimate##0 ~n := #in~n; 1380#L8 assume !(~n < 1); 1377#L10 assume 1 == ~n;#res := 1; 1378#fiboFINAL assume true; 1370#fiboEXIT >#35#return; 1372#L13-1 call #t~ret5 := fibo(~n - 2);< 1397#$Ultimate##0 ~n := #in~n; 1404#L8 assume ~n < 1;#res := 0; 1402#fiboFINAL assume true; 1396#fiboEXIT >#37#return; 1394#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1393#fiboFINAL assume true; 1390#fiboEXIT >#35#return; 1364#L13-1 [2024-11-20 22:55:23,698 INFO L747 eck$LassoCheckResult]: Loop: 1364#L13-1 call #t~ret5 := fibo(~n - 2);< 1359#$Ultimate##0 ~n := #in~n; 1401#L8 assume !(~n < 1); 1399#L10 assume !(1 == ~n); 1363#L13 call #t~ret4 := fibo(~n - 1);< 1359#$Ultimate##0 ~n := #in~n; 1401#L8 assume !(~n < 1); 1399#L10 assume !(1 == ~n); 1363#L13 call #t~ret4 := fibo(~n - 1);< 1359#$Ultimate##0 ~n := #in~n; 1401#L8 assume !(~n < 1); 1399#L10 assume 1 == ~n;#res := 1; 1400#fiboFINAL assume true; 1395#fiboEXIT >#35#return; 1352#L13-1 call #t~ret5 := fibo(~n - 2);< 1351#$Ultimate##0 ~n := #in~n; 1353#L8 assume ~n < 1;#res := 0; 1375#fiboFINAL assume true; 1403#fiboEXIT >#37#return; 1362#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1366#fiboFINAL assume true; 1369#fiboEXIT >#35#return; 1364#L13-1 [2024-11-20 22:55:23,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:23,699 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 2 times [2024-11-20 22:55:23,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:23,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963801756] [2024-11-20 22:55:23,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:23,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 22:55:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 22:55:23,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:23,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963801756] [2024-11-20 22:55:23,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963801756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:23,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269199698] [2024-11-20 22:55:23,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:55:23,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:23,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:23,836 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:23,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-20 22:55:23,868 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:55:23,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:55:23,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 22:55:23,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 22:55:23,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 22:55:24,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269199698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:24,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:24,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 18 [2024-11-20 22:55:24,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643089670] [2024-11-20 22:55:24,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:24,101 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:24,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2000232554, now seen corresponding path program 1 times [2024-11-20 22:55:24,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:24,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170764030] [2024-11-20 22:55:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:24,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:24,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:24,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:24,269 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:24,269 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:24,270 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:24,270 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:24,270 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:55:24,270 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:24,270 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:24,270 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:24,270 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2024-11-20 22:55:24,270 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:24,270 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:24,270 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,275 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,277 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,279 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,281 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,307 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:24,307 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:55:24,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:24,314 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) [2024-11-20 22:55:24,315 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 [2024-11-20 22:55:24,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:24,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:24,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:24,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:24,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:24,353 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) [2024-11-20 22:55:24,357 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 [2024-11-20 22:55:24,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:55:24,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:24,370 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:55:24,377 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 [2024-11-20 22:55:24,377 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:24,377 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:24,377 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:24,377 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:24,377 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:55:24,378 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:24,378 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:24,378 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:24,378 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2024-11-20 22:55:24,378 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:24,378 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:24,378 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,382 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,384 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,386 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,388 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:24,418 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:24,419 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:55:24,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:24,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:24,421 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) [2024-11-20 22:55:24,422 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 [2024-11-20 22:55:24,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:24,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:24,436 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:24,436 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:24,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:24,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:24,437 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:24,437 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:24,441 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:55:24,446 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-20 22:55:24,446 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-20 22:55:24,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:24,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:24,448 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) [2024-11-20 22:55:24,449 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 [2024-11-20 22:55:24,450 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:55:24,450 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:55:24,450 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:55:24,450 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-20 22:55:24,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:24,458 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:55:24,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:24,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 22:55:24,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:24,674 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 22:55:24,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:55:24,786 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-11-20 22:55:24,786 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 22:55:24,871 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 61 states and 77 transitions. Complement of second has 11 states. [2024-11-20 22:55:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 22:55:24,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-11-20 22:55:24,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 32 letters. Loop has 22 letters. [2024-11-20 22:55:24,872 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:24,872 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:55:24,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:24,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 22:55:24,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:25,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 22:55:25,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:55:25,211 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2024-11-20 22:55:25,212 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 22:55:25,299 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 61 states and 77 transitions. Complement of second has 11 states. [2024-11-20 22:55:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:25,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 22:55:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-11-20 22:55:25,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 32 letters. Loop has 22 letters. [2024-11-20 22:55:25,304 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:25,304 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:55:25,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:25,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 22:55:25,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:25,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:25,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 22:55:25,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:25,603 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 [2024-11-20 22:55:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:55:25,757 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 7 loop predicates [2024-11-20 22:55:25,757 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 22:55:26,086 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 408 states and 526 transitions. Complement of second has 132 states. [2024-11-20 22:55:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:26,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 22:55:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 45 transitions. [2024-11-20 22:55:26,099 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 32 letters. Loop has 22 letters. [2024-11-20 22:55:26,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:26,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 54 letters. Loop has 22 letters. [2024-11-20 22:55:26,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:26,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 32 letters. Loop has 44 letters. [2024-11-20 22:55:26,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:26,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 408 states and 526 transitions. [2024-11-20 22:55:26,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-11-20 22:55:26,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 408 states to 259 states and 359 transitions. [2024-11-20 22:55:26,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2024-11-20 22:55:26,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2024-11-20 22:55:26,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 259 states and 359 transitions. [2024-11-20 22:55:26,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:26,144 INFO L218 hiAutomatonCegarLoop]: Abstraction has 259 states and 359 transitions. [2024-11-20 22:55:26,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states and 359 transitions. [2024-11-20 22:55:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 187. [2024-11-20 22:55:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 115 states have (on average 1.1391304347826088) internal successors, (131), 122 states have internal predecessors, (131), 43 states have call successors, (48), 25 states have call predecessors, (48), 29 states have return successors, (67), 39 states have call predecessors, (67), 39 states have call successors, (67) [2024-11-20 22:55:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 246 transitions. [2024-11-20 22:55:26,184 INFO L240 hiAutomatonCegarLoop]: Abstraction has 187 states and 246 transitions. [2024-11-20 22:55:26,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:26,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-20 22:55:26,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-20 22:55:26,185 INFO L87 Difference]: Start difference. First operand 187 states and 246 transitions. Second operand has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 11 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-20 22:55:26,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:26,410 INFO L93 Difference]: Finished difference Result 279 states and 369 transitions. [2024-11-20 22:55:26,410 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 279 states and 369 transitions. [2024-11-20 22:55:26,414 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-11-20 22:55:26,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 279 states to 269 states and 354 transitions. [2024-11-20 22:55:26,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2024-11-20 22:55:26,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2024-11-20 22:55:26,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 269 states and 354 transitions. [2024-11-20 22:55:26,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:26,418 INFO L218 hiAutomatonCegarLoop]: Abstraction has 269 states and 354 transitions. [2024-11-20 22:55:26,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states and 354 transitions. [2024-11-20 22:55:26,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 242. [2024-11-20 22:55:26,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 148 states have (on average 1.114864864864865) internal successors, (165), 158 states have internal predecessors, (165), 55 states have call successors, (59), 30 states have call predecessors, (59), 39 states have return successors, (94), 53 states have call predecessors, (94), 49 states have call successors, (94) [2024-11-20 22:55:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 318 transitions. [2024-11-20 22:55:26,429 INFO L240 hiAutomatonCegarLoop]: Abstraction has 242 states and 318 transitions. [2024-11-20 22:55:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 22:55:26,435 INFO L425 stractBuchiCegarLoop]: Abstraction has 242 states and 318 transitions. [2024-11-20 22:55:26,435 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-20 22:55:26,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 318 transitions. [2024-11-20 22:55:26,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-11-20 22:55:26,437 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:26,437 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:26,438 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 8, 8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:26,438 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-20 22:55:26,438 INFO L745 eck$LassoCheckResult]: Stem: 3377#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 3378#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 3366#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 3367#$Ultimate##0 ~n := #in~n; 3408#L8 assume !(~n < 1); 3407#L10 assume !(1 == ~n); 3403#L13 call #t~ret4 := fibo(~n - 1);< 3406#$Ultimate##0 ~n := #in~n; 3405#L8 assume !(~n < 1); 3404#L10 assume !(1 == ~n); 3399#L13 call #t~ret4 := fibo(~n - 1);< 3402#$Ultimate##0 ~n := #in~n; 3401#L8 assume !(~n < 1); 3400#L10 assume !(1 == ~n); 3394#L13 call #t~ret4 := fibo(~n - 1);< 3398#$Ultimate##0 ~n := #in~n; 3396#L8 assume !(~n < 1); 3397#L10 assume !(1 == ~n); 3391#L13 call #t~ret4 := fibo(~n - 1);< 3389#$Ultimate##0 ~n := #in~n; 3393#L8 assume !(~n < 1); 3395#L10 assume !(1 == ~n); 3390#L13 call #t~ret4 := fibo(~n - 1);< 3389#$Ultimate##0 ~n := #in~n; 3393#L8 assume !(~n < 1); 3395#L10 assume !(1 == ~n); 3390#L13 call #t~ret4 := fibo(~n - 1);< 3389#$Ultimate##0 ~n := #in~n; 3392#L8 assume !(~n < 1); 3516#L10 assume 1 == ~n;#res := 1; 3515#fiboFINAL assume true; 3513#fiboEXIT >#35#return; 3510#L13-1 call #t~ret5 := fibo(~n - 2);< 3511#$Ultimate##0 ~n := #in~n; 3514#L8 assume ~n < 1;#res := 0; 3512#fiboFINAL assume true; 3509#fiboEXIT >#37#return; 3507#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3490#fiboFINAL assume true; 3462#fiboEXIT >#35#return; 3448#L13-1 call #t~ret5 := fibo(~n - 2);< 3458#$Ultimate##0 ~n := #in~n; 3526#L8 assume !(~n < 1); 3527#L10 assume !(1 == ~n); 3386#L13 call #t~ret4 := fibo(~n - 1);< 3353#$Ultimate##0 ~n := #in~n; 3388#L8 assume !(~n < 1); 3575#L10 assume !(1 == ~n); 3414#L13 call #t~ret4 := fibo(~n - 1);< 3415#$Ultimate##0 [2024-11-20 22:55:26,438 INFO L747 eck$LassoCheckResult]: Loop: 3415#$Ultimate##0 ~n := #in~n; 3430#L8 assume !(~n < 1); 3426#L10 assume !(1 == ~n); 3413#L13 call #t~ret4 := fibo(~n - 1);< 3415#$Ultimate##0 [2024-11-20 22:55:26,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:26,438 INFO L85 PathProgramCache]: Analyzing trace with hash -844269686, now seen corresponding path program 3 times [2024-11-20 22:55:26,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108336488] [2024-11-20 22:55:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:26,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:26,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-20 22:55:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:26,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:26,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 102 proven. 45 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-20 22:55:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108336488] [2024-11-20 22:55:26,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108336488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133044091] [2024-11-20 22:55:26,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 22:55:26,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:26,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:26,601 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:26,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-20 22:55:26,634 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-20 22:55:26,634 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:55:26,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 22:55:26,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 82 proven. 14 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-20 22:55:26,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 82 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-20 22:55:26,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133044091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:26,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 10] total 22 [2024-11-20 22:55:26,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890656274] [2024-11-20 22:55:26,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:26,893 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:26,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 2 times [2024-11-20 22:55:26,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472036973] [2024-11-20 22:55:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:26,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:26,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:26,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:26,925 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:26,925 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:26,926 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:26,926 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:26,926 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:55:26,926 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:26,926 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:26,926 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:26,926 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration6_Loop [2024-11-20 22:55:26,926 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:26,926 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:26,927 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:26,929 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:26,931 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:26,936 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:26,940 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:26,964 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:26,964 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:55:26,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:26,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:26,966 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2024-11-20 22:55:26,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-11-20 22:55:26,975 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:26,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:26,987 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:26,987 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:26,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2024-11-20 22:55:26,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:26,995 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2024-11-20 22:55:26,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-11-20 22:55:26,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:26,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:27,010 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:27,011 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:27,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2024-11-20 22:55:27,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:27,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:27,025 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2024-11-20 22:55:27,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-11-20 22:55:27,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:27,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:27,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:27,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:27,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:27,059 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2024-11-20 22:55:27,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-11-20 22:55:27,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:55:27,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:27,085 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:55:27,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:27,093 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:27,093 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:27,093 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:27,093 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:27,093 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:55:27,093 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:27,093 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:27,093 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:27,093 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration6_Loop [2024-11-20 22:55:27,093 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:27,093 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:27,094 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:27,099 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:27,104 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:27,109 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:27,116 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:27,156 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:27,156 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:55:27,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:27,158 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) [2024-11-20 22:55:27,159 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 [2024-11-20 22:55:27,160 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 [2024-11-20 22:55:27,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:27,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:27,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:27,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:27,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:27,171 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:27,171 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:27,174 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:27,180 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 [2024-11-20 22:55:27,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:27,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:27,186 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) [2024-11-20 22:55:27,186 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 [2024-11-20 22:55:27,187 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 [2024-11-20 22:55:27,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:27,198 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:27,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:27,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:27,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:27,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:27,198 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:27,199 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:27,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:27,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:27,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:27,208 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) [2024-11-20 22:55:27,208 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 [2024-11-20 22:55:27,209 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 [2024-11-20 22:55:27,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:27,220 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:27,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:27,220 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:27,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:27,221 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:27,221 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:27,222 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:27,230 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 [2024-11-20 22:55:27,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:27,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:27,233 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) [2024-11-20 22:55:27,238 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 [2024-11-20 22:55:27,239 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 [2024-11-20 22:55:27,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:27,250 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:27,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:27,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:27,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:27,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:27,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:27,253 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:55:27,254 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-20 22:55:27,254 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-20 22:55:27,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:27,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:27,256 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) [2024-11-20 22:55:27,258 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 [2024-11-20 22:55:27,259 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:55:27,259 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:55:27,259 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:55:27,259 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-11-20 22:55:27,266 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 [2024-11-20 22:55:27,266 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:55:27,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:27,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 22:55:27,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:27,515 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Exception during sending of exit command (exit): Broken pipe [2024-11-20 22:55:27,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2024-11-20 22:55:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:27,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:55:27,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:27,621 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-20 22:55:27,621 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 22:55:27,678 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 258 states and 334 transitions. Complement of second has 15 states. [2024-11-20 22:55:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 22:55:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-20 22:55:27,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 49 letters. Loop has 4 letters. [2024-11-20 22:55:27,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:27,682 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:55:27,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:27,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 22:55:27,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:27,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:55:27,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:27,930 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-20 22:55:27,930 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 22:55:27,979 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 258 states and 334 transitions. Complement of second has 15 states. [2024-11-20 22:55:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 22:55:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-20 22:55:27,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 49 letters. Loop has 4 letters. [2024-11-20 22:55:27,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:27,981 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:55:27,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:28,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 22:55:28,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:28,215 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 22:55:28,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:28,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:28,234 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 3 loop predicates [2024-11-20 22:55:28,234 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 22:55:28,310 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 317 states and 394 transitions. Complement of second has 19 states. [2024-11-20 22:55:28,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-20 22:55:28,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2024-11-20 22:55:28,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2024-11-20 22:55:28,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:28,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 53 letters. Loop has 4 letters. [2024-11-20 22:55:28,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:28,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 49 letters. Loop has 8 letters. [2024-11-20 22:55:28,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:28,314 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 394 transitions. [2024-11-20 22:55:28,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-11-20 22:55:28,319 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 254 states and 330 transitions. [2024-11-20 22:55:28,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 109 [2024-11-20 22:55:28,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 112 [2024-11-20 22:55:28,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 254 states and 330 transitions. [2024-11-20 22:55:28,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:28,320 INFO L218 hiAutomatonCegarLoop]: Abstraction has 254 states and 330 transitions. [2024-11-20 22:55:28,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states and 330 transitions. [2024-11-20 22:55:28,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2024-11-20 22:55:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 156 states have (on average 1.108974358974359) internal successors, (173), 166 states have internal predecessors, (173), 55 states have call successors, (59), 30 states have call predecessors, (59), 39 states have return successors, (94), 53 states have call predecessors, (94), 49 states have call successors, (94) [2024-11-20 22:55:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 326 transitions. [2024-11-20 22:55:28,328 INFO L240 hiAutomatonCegarLoop]: Abstraction has 250 states and 326 transitions. [2024-11-20 22:55:28,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:28,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 22:55:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2024-11-20 22:55:28,331 INFO L87 Difference]: Start difference. First operand 250 states and 326 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 16 states have internal predecessors, (48), 12 states have call successors, (15), 9 states have call predecessors, (15), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-20 22:55:28,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:28,600 INFO L93 Difference]: Finished difference Result 323 states and 430 transitions. [2024-11-20 22:55:28,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 323 states and 430 transitions. [2024-11-20 22:55:28,604 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-20 22:55:28,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 323 states to 0 states and 0 transitions. [2024-11-20 22:55:28,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-20 22:55:28,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-20 22:55:28,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-20 22:55:28,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-20 22:55:28,604 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 22:55:28,604 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 22:55:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-20 22:55:28,605 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 22:55:28,605 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-20 22:55:28,605 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-20 22:55:28,605 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-20 22:55:28,605 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-20 22:55:28,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:55:28 BoogieIcfgContainer [2024-11-20 22:55:28,611 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-20 22:55:28,611 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 22:55:28,611 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 22:55:28,611 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 22:55:28,612 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:55:19" (3/4) ... [2024-11-20 22:55:28,613 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-20 22:55:28,614 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 22:55:28,614 INFO L158 Benchmark]: Toolchain (without parser) took 9317.25ms. Allocated memory was 176.2MB in the beginning and 270.5MB in the end (delta: 94.4MB). Free memory was 108.5MB in the beginning and 107.6MB in the end (delta: 883.6kB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. [2024-11-20 22:55:28,614 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory was 133.8MB in the beginning and 133.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:55:28,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.82ms. Allocated memory is still 176.2MB. Free memory was 108.4MB in the beginning and 96.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-20 22:55:28,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.62ms. Allocated memory is still 176.2MB. Free memory was 96.6MB in the beginning and 95.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:55:28,615 INFO L158 Benchmark]: Boogie Preprocessor took 30.45ms. Allocated memory is still 176.2MB. Free memory was 95.3MB in the beginning and 93.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:55:28,615 INFO L158 Benchmark]: RCFGBuilder took 263.37ms. Allocated memory is still 176.2MB. Free memory was 93.6MB in the beginning and 142.0MB in the end (delta: -48.3MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2024-11-20 22:55:28,615 INFO L158 Benchmark]: BuchiAutomizer took 8777.89ms. Allocated memory was 176.2MB in the beginning and 270.5MB in the end (delta: 94.4MB). Free memory was 141.3MB in the beginning and 108.7MB in the end (delta: 32.6MB). Peak memory consumption was 127.6MB. Max. memory is 16.1GB. [2024-11-20 22:55:28,616 INFO L158 Benchmark]: Witness Printer took 2.80ms. Allocated memory is still 270.5MB. Free memory was 108.7MB in the beginning and 107.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:55:28,617 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory was 133.8MB in the beginning and 133.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.82ms. Allocated memory is still 176.2MB. Free memory was 108.4MB in the beginning and 96.6MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.62ms. Allocated memory is still 176.2MB. Free memory was 96.6MB in the beginning and 95.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.45ms. Allocated memory is still 176.2MB. Free memory was 95.3MB in the beginning and 93.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 263.37ms. Allocated memory is still 176.2MB. Free memory was 93.6MB in the beginning and 142.0MB in the end (delta: -48.3MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 8777.89ms. Allocated memory was 176.2MB in the beginning and 270.5MB in the end (delta: 94.4MB). Free memory was 141.3MB in the beginning and 108.7MB in the end (delta: 32.6MB). Peak memory consumption was 127.6MB. Max. memory is 16.1GB. * Witness Printer took 2.80ms. Allocated memory is still 270.5MB. Free memory was 108.7MB in the beginning and 107.6MB 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 9 terminating modules (5 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 11 locations. One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. 5 modules have a trivial ranking function, the largest among these consists of 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.7s and 7 iterations. TraceHistogramMax:10. Analysis of lassos took 4.3s. Construction of modules took 0.7s. Büchi inclusion checks took 3.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 8. Automata minimization 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 125 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/26 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 423 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 509 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 333 mSDsCounter, 340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1066 IncrementalHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 340 mSolverCounterUnsat, 176 mSDtfsCounter, 1066 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI2 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp78 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf91 smp82 dnf100 smp100 tf113 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-20 22:55:28,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:28,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:29,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:29,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:29,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:29,640 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