./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/fibo_10-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 07:49:03,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 07:49:03,238 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-01-10 07:49:03,244 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 07:49:03,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 07:49:03,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 07:49:03,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 07:49:03,275 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 07:49:03,275 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 07:49:03,275 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 07:49:03,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 07:49:03,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 07:49:03,277 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 07:49:03,277 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-01-10 07:49:03,278 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-01-10 07:49:03,278 INFO L153 SettingsManager]: * Use old map elimination=false [2025-01-10 07:49:03,278 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-01-10 07:49:03,278 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-01-10 07:49:03,278 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-01-10 07:49:03,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 07:49:03,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-01-10 07:49:03,278 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 07:49:03,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 07:49:03,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 07:49:03,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 07:49:03,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-01-10 07:49:03,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-01-10 07:49:03,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-01-10 07:49:03,279 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 07:49:03,279 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 07:49:03,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 07:49:03,280 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-01-10 07:49:03,280 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 07:49:03,280 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 07:49:03,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 07:49:03,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 07:49:03,280 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 07:49:03,280 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 07:49:03,280 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-01-10 07:49:03,280 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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-jdk21/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 -> acde98dd01af02b5a508b32116f1b2c3612f1f84e6ba2fe02fc76c333a1d32d3 [2025-01-10 07:49:03,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 07:49:03,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 07:49:03,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 07:49:03,601 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 07:49:03,602 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 07:49:03,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_10-1.c [2025-01-10 07:49:04,936 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a49aeddc/1f4ffb8b3fc94db886b95034e161dfd7/FLAG0057e14cb [2025-01-10 07:49:05,186 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 07:49:05,187 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-1.c [2025-01-10 07:49:05,199 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a49aeddc/1f4ffb8b3fc94db886b95034e161dfd7/FLAG0057e14cb [2025-01-10 07:49:05,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0a49aeddc/1f4ffb8b3fc94db886b95034e161dfd7 [2025-01-10 07:49:05,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 07:49:05,224 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 07:49:05,225 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 07:49:05,226 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 07:49:05,229 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 07:49:05,230 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,231 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f84469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05, skipping insertion in model container [2025-01-10 07:49:05,231 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 07:49:05,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 07:49:05,386 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 07:49:05,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 07:49:05,413 INFO L204 MainTranslator]: Completed translation [2025-01-10 07:49:05,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05 WrapperNode [2025-01-10 07:49:05,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 07:49:05,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 07:49:05,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 07:49:05,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 07:49:05,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,429 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,442 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2025-01-10 07:49:05,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 07:49:05,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 07:49:05,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 07:49:05,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 07:49:05,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,453 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,462 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]. [2025-01-10 07:49:05,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,463 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,467 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,473 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,474 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 07:49:05,475 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 07:49:05,475 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 07:49:05,475 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 07:49:05,478 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:05,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:05,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:05,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-01-10 07:49:05,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 07:49:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 07:49:05,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 07:49:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 07:49:05,540 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-01-10 07:49:05,540 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-01-10 07:49:05,593 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 07:49:05,594 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 07:49:05,660 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-01-10 07:49:05,661 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 07:49:05,667 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 07:49:05,668 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 07:49:05,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:05 BoogieIcfgContainer [2025-01-10 07:49:05,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 07:49:05,669 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-01-10 07:49:05,669 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-01-10 07:49:05,674 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-01-10 07:49:05,674 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 07:49:05,674 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.01 07:49:05" (1/3) ... [2025-01-10 07:49:05,675 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63e9160b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.01 07:49:05, skipping insertion in model container [2025-01-10 07:49:05,675 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 07:49:05,675 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05" (2/3) ... [2025-01-10 07:49:05,676 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@63e9160b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.01 07:49:05, skipping insertion in model container [2025-01-10 07:49:05,676 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 07:49:05,676 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:05" (3/3) ... [2025-01-10 07:49:05,677 INFO L363 chiAutomizerObserver]: Analyzing ICFG fibo_10-1.c [2025-01-10 07:49:05,719 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-01-10 07:49:05,719 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-01-10 07:49:05,719 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-01-10 07:49:05,720 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-01-10 07:49:05,720 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-01-10 07:49:05,720 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-01-10 07:49:05,720 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-01-10 07:49:05,721 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-01-10 07:49:05,726 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) [2025-01-10 07:49:05,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:05,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:05,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:05,747 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-01-10 07:49:05,748 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-01-10 07:49:05,748 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-01-10 07:49:05,748 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) [2025-01-10 07:49:05,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:05,751 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:05,752 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:05,752 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-01-10 07:49:05,752 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-01-10 07:49:05,759 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< [2025-01-10 07:49:05,759 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< [2025-01-10 07:49:05,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:05,764 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2025-01-10 07:49:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:05,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421291333] [2025-01-10 07:49:05,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:05,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:05,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:05,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:05,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,843 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:05,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:05,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:05,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:05,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:05,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2025-01-10 07:49:05,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:05,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161318501] [2025-01-10 07:49:05,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:05,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:05,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:05,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:05,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,882 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:05,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:05,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:05,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:05,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2025-01-10 07:49:05,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:05,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217428828] [2025-01-10 07:49:05,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:05,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 07:49:05,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 07:49:05,907 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,908 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:05,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 07:49:05,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 07:49:05,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,921 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:06,058 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:06,059 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:06,059 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:06,059 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:06,059 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:06,059 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,061 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:06,061 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:06,061 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration1_Loop [2025-01-10 07:49:06,061 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:06,062 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:06,072 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,081 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,086 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,090 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,102 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,175 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:06,175 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:06,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,180 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-01-10 07:49:06,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:06,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,207 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:06,207 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:06,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-01-10 07:49:06,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:06,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,242 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:06,243 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:06,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-01-10 07:49:06,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-01-10 07:49:06,257 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:06,257 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,271 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:06,271 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:06,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,280 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-01-10 07:49:06,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:06,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-01-10 07:49:06,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,303 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-01-10 07:49:06,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:06,307 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,363 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:06,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-01-10 07:49:06,368 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:06,368 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:06,368 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:06,368 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:06,368 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:06,369 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,370 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:06,370 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:06,370 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration1_Loop [2025-01-10 07:49:06,370 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:06,370 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:06,371 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,375 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,378 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,383 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,397 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,446 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:06,450 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:06,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,454 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-01-10 07:49:06,458 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 [2025-01-10 07:49:06,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:06,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:06,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:06,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:06,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:06,477 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:06,477 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:06,479 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:06,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-01-10 07:49:06,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-01-10 07:49:06,493 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 [2025-01-10 07:49:06,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:06,506 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:06,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:06,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:06,507 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:06,508 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:06,508 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:06,511 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:06,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-01-10 07:49:06,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,518 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-01-10 07:49:06,521 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 [2025-01-10 07:49:06,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:06,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:06,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:06,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:06,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:06,532 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:06,532 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:06,534 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:06,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-01-10 07:49:06,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,543 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-01-10 07:49:06,545 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 [2025-01-10 07:49:06,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:06,556 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:06,556 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:06,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:06,556 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:06,557 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:06,557 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:06,559 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:06,563 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-01-10 07:49:06,566 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-01-10 07:49:06,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,571 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:06,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-01-10 07:49:06,573 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:06,573 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:06,573 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:06,574 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2025-01-10 07:49:06,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-01-10 07:49:06,583 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:06,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:06,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:06,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:06,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:06,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 07:49:06,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:06,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:06,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:06,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:06,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:06,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:06,734 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 [2025-01-10 07:49:06,736 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) [2025-01-10 07:49:06,836 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. [2025-01-10 07:49:06,838 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 [2025-01-10 07:49:06,841 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) [2025-01-10 07:49:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2025-01-10 07:49:06,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2025-01-10 07:49:06,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:06,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2025-01-10 07:49:06,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:06,850 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2025-01-10 07:49:06,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:06,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2025-01-10 07:49:06,853 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:06,857 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 23 states and 31 transitions. [2025-01-10 07:49:06,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2025-01-10 07:49:06,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2025-01-10 07:49:06,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2025-01-10 07:49:06,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:06,860 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2025-01-10 07:49:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2025-01-10 07:49:06,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2025-01-10 07:49:06,882 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) [2025-01-10 07:49:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2025-01-10 07:49:06,883 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2025-01-10 07:49:06,884 INFO L432 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2025-01-10 07:49:06,884 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-01-10 07:49:06,884 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2025-01-10 07:49:06,885 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:06,885 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:06,885 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:06,886 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:06,886 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:06,886 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#35#return;" [2025-01-10 07:49:06,886 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret5 := fibo(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#35#return;" [2025-01-10 07:49:06,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2025-01-10 07:49:06,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:06,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29459958] [2025-01-10 07:49:06,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:06,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:06,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 07:49:06,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 07:49:06,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 07:49:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:07,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29459958] [2025-01-10 07:49:07,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29459958] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 07:49:07,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 07:49:07,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 07:49:07,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997539188] [2025-01-10 07:49:07,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 07:49:07,021 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:07,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2025-01-10 07:49:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:07,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784529175] [2025-01-10 07:49:07,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:07,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:07,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 07:49:07,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 07:49:07,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:07,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 07:49:07,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784529175] [2025-01-10 07:49:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784529175] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 07:49:07,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 07:49:07,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 07:49:07,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22632394] [2025-01-10 07:49:07,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 07:49:07,085 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-01-10 07:49:07,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:07,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 07:49:07,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 07:49:07,088 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) [2025-01-10 07:49:07,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-01-10 07:49:07,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:07,175 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2025-01-10 07:49:07,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2025-01-10 07:49:07,177 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:07,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2025-01-10 07:49:07,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2025-01-10 07:49:07,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2025-01-10 07:49:07,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2025-01-10 07:49:07,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:07,178 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-01-10 07:49:07,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2025-01-10 07:49:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-10 07:49:07,180 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) [2025-01-10 07:49:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2025-01-10 07:49:07,181 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-01-10 07:49:07,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 07:49:07,182 INFO L432 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-01-10 07:49:07,182 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-01-10 07:49:07,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2025-01-10 07:49:07,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:07,183 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:07,183 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:07,183 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:07,184 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:07,184 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#35#return;" [2025-01-10 07:49:07,184 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret5 := fibo(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#35#return;" [2025-01-10 07:49:07,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2025-01-10 07:49:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624367252] [2025-01-10 07:49:07,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:07,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 07:49:07,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 07:49:07,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:07,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:07,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:07,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624367252] [2025-01-10 07:49:07,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624367252] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 07:49:07,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208594993] [2025-01-10 07:49:07,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:07,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 07:49:07,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,274 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-10 07:49:07,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 07:49:07,311 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 07:49:07,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:07,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:07,314 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 07:49:07,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:07,351 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 07:49:07,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:07,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208594993] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 07:49:07,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 07:49:07,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-10 07:49:07,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907666523] [2025-01-10 07:49:07,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 07:49:07,474 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:07,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:07,475 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2025-01-10 07:49:07,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:07,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651600683] [2025-01-10 07:49:07,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:07,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:07,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:07,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:07,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:07,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:07,483 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:07,484 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:07,489 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:07,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:07,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:07,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:07,628 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:07,628 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:07,628 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:07,628 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:07,628 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:07,628 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,628 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:07,628 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:07,628 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration3_Loop [2025-01-10 07:49:07,629 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:07,629 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:07,629 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,638 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,641 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,646 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,695 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:07,696 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:07,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,699 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-01-10 07:49:07,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:07,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:07,715 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:07,715 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:07,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-01-10 07:49:07,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,724 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-01-10 07:49:07,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:07,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:07,736 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:07,736 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:07,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-01-10 07:49:07,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,744 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-01-10 07:49:07,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:07,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:07,757 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:07,757 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:07,764 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-01-10 07:49:07,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,766 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-01-10 07:49:07,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:07,769 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:07,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-01-10 07:49:07,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,791 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:07,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:07,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-01-10 07:49:07,808 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:07,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-01-10 07:49:07,816 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:07,816 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:07,816 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:07,816 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:07,816 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:07,816 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,816 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:07,816 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:07,816 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration3_Loop [2025-01-10 07:49:07,816 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:07,816 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:07,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,822 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,831 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,880 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:07,881 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:07,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,883 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-01-10 07:49:07,887 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 [2025-01-10 07:49:07,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:07,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:07,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:07,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:07,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:07,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:07,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:07,906 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:07,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:07,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,917 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,920 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 [2025-01-10 07:49:07,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-01-10 07:49:07,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:07,933 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:07,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:07,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:07,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:07,935 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:07,936 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:07,938 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:07,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-01-10 07:49:07,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,947 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-01-10 07:49:07,949 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 [2025-01-10 07:49:07,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:07,959 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:07,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:07,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:07,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:07,960 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:07,960 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:07,961 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:07,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-01-10 07:49:07,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,969 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:07,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-01-10 07:49:07,973 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 [2025-01-10 07:49:07,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:07,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:07,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:07,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:07,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:07,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:07,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:07,991 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:07,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:07,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,001 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:08,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-01-10 07:49:08,004 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 [2025-01-10 07:49:08,014 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:08,014 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:08,014 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:08,014 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:08,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:08,016 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:08,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:08,018 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:08,021 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-01-10 07:49:08,021 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-01-10 07:49:08,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,023 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:08,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-01-10 07:49:08,025 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:08,025 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:08,025 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:08,025 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2025-01-10 07:49:08,031 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-01-10 07:49:08,031 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:08,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:08,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 07:49:08,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 07:49:08,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:08,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:08,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 07:49:08,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:08,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:08,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:08,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:08,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:08,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 07:49:08,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:08,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:08,284 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 [2025-01-10 07:49:08,285 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) [2025-01-10 07:49:08,527 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. [2025-01-10 07:49:08,528 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 [2025-01-10 07:49:08,529 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) [2025-01-10 07:49:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2025-01-10 07:49:08,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2025-01-10 07:49:08,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:08,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2025-01-10 07:49:08,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:08,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2025-01-10 07:49:08,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:08,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2025-01-10 07:49:08,536 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-01-10 07:49:08,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2025-01-10 07:49:08,544 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2025-01-10 07:49:08,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2025-01-10 07:49:08,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2025-01-10 07:49:08,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:08,545 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2025-01-10 07:49:08,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2025-01-10 07:49:08,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-01-10 07:49:08,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2025-01-10 07:49:08,577 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) [2025-01-10 07:49:08,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2025-01-10 07:49:08,579 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2025-01-10 07:49:08,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:08,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 07:49:08,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-01-10 07:49:08,580 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 11 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2025-01-10 07:49:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:08,699 INFO L93 Difference]: Finished difference Result 119 states and 163 transitions. [2025-01-10 07:49:08,699 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 163 transitions. [2025-01-10 07:49:08,703 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-01-10 07:49:08,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 158 transitions. [2025-01-10 07:49:08,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2025-01-10 07:49:08,709 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2025-01-10 07:49:08,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 158 transitions. [2025-01-10 07:49:08,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:08,709 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2025-01-10 07:49:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 158 transitions. [2025-01-10 07:49:08,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2025-01-10 07:49:08,717 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) [2025-01-10 07:49:08,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2025-01-10 07:49:08,719 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 143 transitions. [2025-01-10 07:49:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 07:49:08,720 INFO L432 stractBuchiCegarLoop]: Abstraction has 106 states and 143 transitions. [2025-01-10 07:49:08,720 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-01-10 07:49:08,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 143 transitions. [2025-01-10 07:49:08,723 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-01-10 07:49:08,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:08,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:08,725 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:08,725 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:08,725 INFO L752 eck$LassoCheckResult]: Stem: "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(12, 2);call #Ultimate.allocInit(12, 3);" "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 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#35#return;" "call #t~ret5 := fibo(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#37#return;" "#res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5;" "assume true;" >"#35#return;" [2025-01-10 07:49:08,725 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret5 := fibo(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#35#return;" [2025-01-10 07:49:08,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:08,726 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2025-01-10 07:49:08,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268593809] [2025-01-10 07:49:08,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:08,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:08,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:08,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:08,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:08,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:08,954 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 07:49:08,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:08,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268593809] [2025-01-10 07:49:08,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268593809] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 07:49:08,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156861053] [2025-01-10 07:49:08,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:08,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 07:49:08,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,958 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 07:49:08,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-10 07:49:08,987 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:08,997 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:08,998 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:08,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:08,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 07:49:09,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:09,059 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-10 07:49:09,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 07:49:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-10 07:49:09,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156861053] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 07:49:09,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 07:49:09,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 20 [2025-01-10 07:49:09,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999283056] [2025-01-10 07:49:09,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 07:49:09,342 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:09,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 2 times [2025-01-10 07:49:09,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:09,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480141317] [2025-01-10 07:49:09,343 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 07:49:09,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:09,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 2 equivalence classes. [2025-01-10 07:49:09,348 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:09,349 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 07:49:09,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:09,349 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:09,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:09,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:09,351 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:09,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:09,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:09,460 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:09,460 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:09,460 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:09,460 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:09,460 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:09,460 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,460 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:09,460 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:09,460 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration4_Loop [2025-01-10 07:49:09,460 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:09,460 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:09,461 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,465 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,468 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,477 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,480 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,513 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:09,513 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:09,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:09,516 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:09,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-01-10 07:49:09,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:09,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:09,534 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:09,535 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:09,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:09,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:09,546 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:09,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-01-10 07:49:09,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:09,551 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:09,565 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:09,565 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:09,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-01-10 07:49:09,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:09,574 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:09,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-01-10 07:49:09,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:09,577 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:09,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-01-10 07:49:09,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:09,596 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:09,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-01-10 07:49:09,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:09,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:09,611 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:09,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-01-10 07:49:09,620 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:09,620 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:09,620 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:09,620 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:09,620 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:09,620 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,620 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:09,621 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:09,621 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration4_Loop [2025-01-10 07:49:09,621 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:09,621 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:09,622 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,625 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,627 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,632 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,636 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:09,669 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:09,669 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:09,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:09,671 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:09,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-01-10 07:49:09,673 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 [2025-01-10 07:49:09,683 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:09,683 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:09,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:09,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:09,683 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:09,684 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:09,684 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:09,689 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:09,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-01-10 07:49:09,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:09,697 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:09,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-01-10 07:49:09,699 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 [2025-01-10 07:49:09,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:09,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:09,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:09,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:09,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:09,710 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:09,710 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:09,712 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:09,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-01-10 07:49:09,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:09,722 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:09,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-01-10 07:49:09,725 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 [2025-01-10 07:49:09,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:09,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:09,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:09,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:09,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:09,739 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:09,739 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:09,740 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:09,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:09,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:09,751 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:09,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2025-01-10 07:49:09,754 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 [2025-01-10 07:49:09,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:09,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:09,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:09,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:09,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:09,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:09,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:09,773 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:09,780 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-01-10 07:49:09,780 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-01-10 07:49:09,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:09,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:09,785 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:09,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2025-01-10 07:49:09,790 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:09,790 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:09,790 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:09,790 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2025-01-10 07:49:09,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:09,799 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:09,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:09,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:09,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:09,858 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:09,858 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:09,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 07:49:09,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:09,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2025-01-10 07:49:10,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:10,096 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:10,096 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:10,096 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:10,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 07:49:10,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:10,174 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 [2025-01-10 07:49:10,174 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 07:49:10,383 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 190 states and 265 transitions. Complement of second has 37 states. [2025-01-10 07:49:10,385 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 [2025-01-10 07:49:10,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 07:49:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2025-01-10 07:49:10,387 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 32 letters. Loop has 10 letters. [2025-01-10 07:49:10,387 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:10,387 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:10,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:10,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:10,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:10,441 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:10,441 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:10,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 07:49:10,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:10,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:10,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:10,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:10,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:10,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 07:49:10,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:10,724 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2025-01-10 07:49:10,725 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 07:49:10,892 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 296 states and 402 transitions. Complement of second has 29 states. [2025-01-10 07:49:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2025-01-10 07:49:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 07:49:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 24 transitions. [2025-01-10 07:49:10,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2025-01-10 07:49:10,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:10,894 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:10,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:10,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:10,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:10,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:10,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:10,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 07:49:10,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:11,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:11,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:11,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:11,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:11,141 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 07:49:11,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:11,214 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2025-01-10 07:49:11,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 07:49:11,454 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 817 states and 1129 transitions. Complement of second has 135 states. [2025-01-10 07:49:11,455 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 [2025-01-10 07:49:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2025-01-10 07:49:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2025-01-10 07:49:11,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 10 letters. [2025-01-10 07:49:11,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:11,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 42 letters. Loop has 10 letters. [2025-01-10 07:49:11,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:11,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 20 letters. [2025-01-10 07:49:11,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:11,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 817 states and 1129 transitions. [2025-01-10 07:49:11,476 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2025-01-10 07:49:11,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 817 states to 418 states and 629 transitions. [2025-01-10 07:49:11,492 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2025-01-10 07:49:11,492 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 182 [2025-01-10 07:49:11,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 418 states and 629 transitions. [2025-01-10 07:49:11,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:11,493 INFO L218 hiAutomatonCegarLoop]: Abstraction has 418 states and 629 transitions. [2025-01-10 07:49:11,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states and 629 transitions. [2025-01-10 07:49:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 356. [2025-01-10 07:49:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 223 states have (on average 1.1973094170403586) internal successors, (267), 239 states have internal predecessors, (267), 75 states have call successors, (84), 46 states have call predecessors, (84), 58 states have return successors, (142), 70 states have call predecessors, (142), 71 states have call successors, (142) [2025-01-10 07:49:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 493 transitions. [2025-01-10 07:49:11,539 INFO L240 hiAutomatonCegarLoop]: Abstraction has 356 states and 493 transitions. [2025-01-10 07:49:11,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:11,539 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 07:49:11,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2025-01-10 07:49:11,540 INFO L87 Difference]: Start difference. First operand 356 states and 493 transitions. Second operand has 21 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 14 states have internal predecessors, (37), 11 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-10 07:49:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:11,855 INFO L93 Difference]: Finished difference Result 620 states and 969 transitions. [2025-01-10 07:49:11,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 620 states and 969 transitions. [2025-01-10 07:49:11,865 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2025-01-10 07:49:11,875 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 620 states to 595 states and 933 transitions. [2025-01-10 07:49:11,875 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 277 [2025-01-10 07:49:11,876 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 280 [2025-01-10 07:49:11,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 595 states and 933 transitions. [2025-01-10 07:49:11,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:11,877 INFO L218 hiAutomatonCegarLoop]: Abstraction has 595 states and 933 transitions. [2025-01-10 07:49:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states and 933 transitions. [2025-01-10 07:49:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 516. [2025-01-10 07:49:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 315 states have (on average 1.146031746031746) internal successors, (361), 339 states have internal predecessors, (361), 118 states have call successors, (128), 62 states have call predecessors, (128), 83 states have return successors, (275), 114 states have call predecessors, (275), 109 states have call successors, (275) [2025-01-10 07:49:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 764 transitions. [2025-01-10 07:49:11,914 INFO L240 hiAutomatonCegarLoop]: Abstraction has 516 states and 764 transitions. [2025-01-10 07:49:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 07:49:11,915 INFO L432 stractBuchiCegarLoop]: Abstraction has 516 states and 764 transitions. [2025-01-10 07:49:11,915 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-01-10 07:49:11,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 516 states and 764 transitions. [2025-01-10 07:49:11,919 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:11,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:11,919 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:11,921 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:11,921 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-01-10 07:49:11,922 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#35#return;" "call #t~ret5 := fibo(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< [2025-01-10 07:49:11,922 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< [2025-01-10 07:49:11,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:11,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1746618538, now seen corresponding path program 1 times [2025-01-10 07:49:11,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:11,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766199221] [2025-01-10 07:49:11,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:11,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:11,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:11,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:11,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:11,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:12,221 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 07:49:12,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766199221] [2025-01-10 07:49:12,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766199221] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 07:49:12,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070261255] [2025-01-10 07:49:12,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:12,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 07:49:12,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,225 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-01-10 07:49:12,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:12,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:12,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:12,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:12,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 07:49:12,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 07:49:12,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 07:49:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-01-10 07:49:12,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070261255] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 07:49:12,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 07:49:12,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 23 [2025-01-10 07:49:12,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785310020] [2025-01-10 07:49:12,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 07:49:12,580 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:12,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:12,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 2 times [2025-01-10 07:49:12,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:12,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362835719] [2025-01-10 07:49:12,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 07:49:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:12,583 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:12,584 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:12,584 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 07:49:12,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:12,584 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:12,586 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:12,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:12,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:12,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:12,590 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:12,626 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:12,627 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:12,627 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:12,627 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:12,627 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:12,627 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,627 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:12,627 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:12,627 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration5_Loop [2025-01-10 07:49:12,627 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:12,628 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:12,628 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,630 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,632 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,634 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,640 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,674 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:12,675 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:12,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,677 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2025-01-10 07:49:12,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:12,681 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:12,697 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:12,698 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:12,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2025-01-10 07:49:12,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,708 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:12,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:12,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2025-01-10 07:49:12,724 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:12,724 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:12,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2025-01-10 07:49:12,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,736 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2025-01-10 07:49:12,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:12,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:12,752 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:12,752 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:12,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2025-01-10 07:49:12,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,761 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:12,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:12,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2025-01-10 07:49:12,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:12,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,786 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2025-01-10 07:49:12,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:12,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:12,809 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:12,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2025-01-10 07:49:12,813 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:12,813 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:12,813 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:12,813 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:12,813 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:12,813 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,814 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:12,814 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:12,814 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration5_Loop [2025-01-10 07:49:12,814 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:12,814 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:12,814 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,816 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,819 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,820 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,822 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:12,854 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:12,854 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:12,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,857 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2025-01-10 07:49:12,861 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 [2025-01-10 07:49:12,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:12,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:12,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:12,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:12,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:12,871 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:12,871 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:12,873 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:12,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:12,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,881 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2025-01-10 07:49:12,883 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 [2025-01-10 07:49:12,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:12,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:12,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:12,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:12,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:12,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:12,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:12,895 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:12,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2025-01-10 07:49:12,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,903 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2025-01-10 07:49:12,907 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 [2025-01-10 07:49:12,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:12,917 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:12,918 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:12,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:12,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:12,918 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:12,918 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:12,919 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:12,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:12,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,928 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2025-01-10 07:49:12,930 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 [2025-01-10 07:49:12,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:12,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:12,940 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:12,940 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:12,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:12,941 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:12,941 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:12,942 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:12,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2025-01-10 07:49:12,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,950 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2025-01-10 07:49:12,953 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 [2025-01-10 07:49:12,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:12,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:12,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:12,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:12,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:12,964 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:12,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:12,965 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:12,967 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-01-10 07:49:12,967 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-01-10 07:49:12,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,969 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:12,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2025-01-10 07:49:12,970 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:12,970 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:12,970 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:12,971 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2025-01-10 07:49:12,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2025-01-10 07:49:12,977 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:12,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:13,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:13,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:13,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:13,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:13,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-10 07:49:13,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:13,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:13,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:13,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:13,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:13,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:13,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:13,175 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 [2025-01-10 07:49:13,176 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 516 states and 764 transitions. cyclomatic complexity: 255 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:13,242 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 516 states and 764 transitions. cyclomatic complexity: 255. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 538 states and 786 transitions. Complement of second has 15 states. [2025-01-10 07:49:13,243 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 [2025-01-10 07:49:13,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:13,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2025-01-10 07:49:13,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2025-01-10 07:49:13,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:13,245 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:13,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:13,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2025-01-10 07:49:13,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:13,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:13,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:13,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:13,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-10 07:49:13,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:13,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:13,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:13,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:13,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:13,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:13,448 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:13,472 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 [2025-01-10 07:49:13,473 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 516 states and 764 transitions. cyclomatic complexity: 255 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:13,529 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 516 states and 764 transitions. cyclomatic complexity: 255. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 538 states and 786 transitions. Complement of second has 15 states. [2025-01-10 07:49:13,530 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 [2025-01-10 07:49:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2025-01-10 07:49:13,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2025-01-10 07:49:13,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:13,531 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:13,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:13,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:13,600 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:13,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:13,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:13,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-10 07:49:13,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:13,699 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:13,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:13,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:13,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:13,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:13,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:13,727 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 [2025-01-10 07:49:13,727 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 516 states and 764 transitions. cyclomatic complexity: 255 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:13,804 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 516 states and 764 transitions. cyclomatic complexity: 255. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 695 states and 946 transitions. Complement of second has 19 states. [2025-01-10 07:49:13,804 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 [2025-01-10 07:49:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2025-01-10 07:49:13,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2025-01-10 07:49:13,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:13,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2025-01-10 07:49:13,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:13,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2025-01-10 07:49:13,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:13,807 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 695 states and 946 transitions. [2025-01-10 07:49:13,815 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:13,822 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 695 states to 556 states and 805 transitions. [2025-01-10 07:49:13,823 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 205 [2025-01-10 07:49:13,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2025-01-10 07:49:13,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 556 states and 805 transitions. [2025-01-10 07:49:13,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:13,823 INFO L218 hiAutomatonCegarLoop]: Abstraction has 556 states and 805 transitions. [2025-01-10 07:49:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states and 805 transitions. [2025-01-10 07:49:13,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 546. [2025-01-10 07:49:13,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 342 states have (on average 1.1345029239766082) internal successors, (388), 369 states have internal predecessors, (388), 118 states have call successors, (128), 62 states have call predecessors, (128), 86 states have return successors, (275), 114 states have call predecessors, (275), 109 states have call successors, (275) [2025-01-10 07:49:13,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 791 transitions. [2025-01-10 07:49:13,843 INFO L240 hiAutomatonCegarLoop]: Abstraction has 546 states and 791 transitions. [2025-01-10 07:49:13,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:13,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 07:49:13,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2025-01-10 07:49:13,844 INFO L87 Difference]: Start difference. First operand 546 states and 791 transitions. Second operand has 23 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 15 states have internal predecessors, (37), 11 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-10 07:49:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:14,232 INFO L93 Difference]: Finished difference Result 787 states and 1157 transitions. [2025-01-10 07:49:14,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 787 states and 1157 transitions. [2025-01-10 07:49:14,241 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:14,251 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 787 states to 744 states and 1095 transitions. [2025-01-10 07:49:14,251 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 259 [2025-01-10 07:49:14,252 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 265 [2025-01-10 07:49:14,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 744 states and 1095 transitions. [2025-01-10 07:49:14,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:14,252 INFO L218 hiAutomatonCegarLoop]: Abstraction has 744 states and 1095 transitions. [2025-01-10 07:49:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states and 1095 transitions. [2025-01-10 07:49:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 689. [2025-01-10 07:49:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 435 states have (on average 1.1172413793103448) internal successors, (486), 463 states have internal predecessors, (486), 158 states have call successors, (170), 87 states have call predecessors, (170), 96 states have return successors, (294), 138 states have call predecessors, (294), 146 states have call successors, (294) [2025-01-10 07:49:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 950 transitions. [2025-01-10 07:49:14,283 INFO L240 hiAutomatonCegarLoop]: Abstraction has 689 states and 950 transitions. [2025-01-10 07:49:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 07:49:14,284 INFO L432 stractBuchiCegarLoop]: Abstraction has 689 states and 950 transitions. [2025-01-10 07:49:14,285 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-01-10 07:49:14,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 689 states and 950 transitions. [2025-01-10 07:49:14,290 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:14,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:14,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:14,292 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [13, 13, 12, 11, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:14,292 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-01-10 07:49:14,292 INFO L752 eck$LassoCheckResult]: Stem: "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(12, 2);call #Ultimate.allocInit(12, 3);" "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 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#35#return;" "call #t~ret5 := fibo(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" [2025-01-10 07:49:14,292 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" [2025-01-10 07:49:14,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1585625609, now seen corresponding path program 2 times [2025-01-10 07:49:14,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:14,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015667318] [2025-01-10 07:49:14,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 07:49:14,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:14,299 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-01-10 07:49:14,310 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 07:49:14,312 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 07:49:14,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 07:49:14,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:14,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015667318] [2025-01-10 07:49:14,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015667318] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 07:49:14,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422289577] [2025-01-10 07:49:14,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 07:49:14,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 07:49:14,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:14,665 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-10 07:49:14,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-01-10 07:49:14,691 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-01-10 07:49:14,704 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 07:49:14,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 07:49:14,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:14,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-10 07:49:14,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 07:49:14,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 07:49:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-10 07:49:15,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422289577] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 07:49:15,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 07:49:15,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 23 [2025-01-10 07:49:15,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934899156] [2025-01-10 07:49:15,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 07:49:15,007 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:15,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:15,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1955414, now seen corresponding path program 3 times [2025-01-10 07:49:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:15,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74938069] [2025-01-10 07:49:15,008 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 07:49:15,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:15,010 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:15,011 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:15,012 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 07:49:15,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:15,012 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:15,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:15,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:15,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:15,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:15,014 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:15,066 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:15,066 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:15,066 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:15,066 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:15,066 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:15,067 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:15,067 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:15,067 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:15,067 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration6_Loop [2025-01-10 07:49:15,067 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:15,067 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:15,068 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:15,069 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:15,077 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:15,079 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:15,111 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:15,111 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:15,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:15,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:15,114 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:15,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2025-01-10 07:49:15,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:15,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:15,132 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:15,132 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 07:49:15,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:15,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:15,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:15,142 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:15,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2025-01-10 07:49:15,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:15,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:15,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2025-01-10 07:49:15,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:15,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:15,172 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:15,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2025-01-10 07:49:15,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:15,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:15,309 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:15,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2025-01-10 07:49:15,315 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:15,316 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:15,316 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:15,316 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:15,316 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:15,316 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:15,316 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:15,316 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:15,316 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-1.c_Iteration6_Loop [2025-01-10 07:49:15,316 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:15,316 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:15,316 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:15,318 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:15,324 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:15,325 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:15,355 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:15,355 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:15,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:15,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:15,357 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:15,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2025-01-10 07:49:15,359 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 [2025-01-10 07:49:15,370 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:15,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:15,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:15,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:15,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:15,370 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:15,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:15,372 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:15,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2025-01-10 07:49:15,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:15,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:15,380 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:15,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2025-01-10 07:49:15,382 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 [2025-01-10 07:49:15,392 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:15,392 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:15,392 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:15,392 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:15,392 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:15,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:15,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:15,395 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:15,397 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-01-10 07:49:15,397 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-01-10 07:49:15,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:15,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:15,400 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-01-10 07:49:15,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2025-01-10 07:49:15,401 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:15,401 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:15,401 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:15,401 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2025-01-10 07:49:15,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2025-01-10 07:49:15,407 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:15,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:15,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 07:49:15,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 07:49:15,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:15,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:15,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-10 07:49:15,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:15,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:15,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:15,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:15,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:15,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:15,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:15,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:15,625 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2025-01-10 07:49:15,625 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 689 states and 950 transitions. cyclomatic complexity: 268 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:15,674 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 689 states and 950 transitions. cyclomatic complexity: 268. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 714 states and 976 transitions. Complement of second has 18 states. [2025-01-10 07:49:15,674 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 [2025-01-10 07:49:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2025-01-10 07:49:15,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 56 letters. Loop has 4 letters. [2025-01-10 07:49:15,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:15,676 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:15,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:15,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 07:49:15,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 07:49:15,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:15,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:15,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-10 07:49:15,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:15,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:15,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:15,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:15,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:15,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:15,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:15,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 07:49:15,903 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2025-01-10 07:49:15,903 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 689 states and 950 transitions. cyclomatic complexity: 268 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:15,975 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 689 states and 950 transitions. cyclomatic complexity: 268. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 934 states and 1293 transitions. Complement of second has 22 states. [2025-01-10 07:49:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2025-01-10 07:49:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:15,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2025-01-10 07:49:15,976 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 56 letters. Loop has 4 letters. [2025-01-10 07:49:15,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:15,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 60 letters. Loop has 4 letters. [2025-01-10 07:49:15,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:15,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 56 letters. Loop has 8 letters. [2025-01-10 07:49:15,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:15,977 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 934 states and 1293 transitions. [2025-01-10 07:49:15,991 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:16,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 934 states to 861 states and 1212 transitions. [2025-01-10 07:49:16,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 273 [2025-01-10 07:49:16,004 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 301 [2025-01-10 07:49:16,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 861 states and 1212 transitions. [2025-01-10 07:49:16,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:16,004 INFO L218 hiAutomatonCegarLoop]: Abstraction has 861 states and 1212 transitions. [2025-01-10 07:49:16,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states and 1212 transitions. [2025-01-10 07:49:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 841. [2025-01-10 07:49:16,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 535 states have (on average 1.1102803738317757) internal successors, (594), 570 states have internal predecessors, (594), 191 states have call successors, (221), 112 states have call predecessors, (221), 115 states have return successors, (373), 158 states have call predecessors, (373), 179 states have call successors, (373) [2025-01-10 07:49:16,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2025-01-10 07:49:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1188 transitions. [2025-01-10 07:49:16,055 INFO L240 hiAutomatonCegarLoop]: Abstraction has 841 states and 1188 transitions. [2025-01-10 07:49:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:16,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 07:49:16,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2025-01-10 07:49:16,055 INFO L87 Difference]: Start difference. First operand 841 states and 1188 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 13 states have internal predecessors, (38), 11 states have call successors, (12), 12 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 07:49:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:16,383 INFO L93 Difference]: Finished difference Result 535 states and 633 transitions. [2025-01-10 07:49:16,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 535 states and 633 transitions. [2025-01-10 07:49:16,388 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-01-10 07:49:16,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 535 states to 0 states and 0 transitions. [2025-01-10 07:49:16,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-01-10 07:49:16,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-01-10 07:49:16,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-01-10 07:49:16,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-01-10 07:49:16,389 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:16,389 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-10 07:49:16,389 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:16,389 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-01-10 07:49:16,390 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-01-10 07:49:16,390 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-01-10 07:49:16,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-01-10 07:49:16,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.01 07:49:16 BoogieIcfgContainer [2025-01-10 07:49:16,399 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-01-10 07:49:16,399 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 07:49:16,399 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 07:49:16,399 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 07:49:16,400 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:05" (3/4) ... [2025-01-10 07:49:16,402 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 07:49:16,403 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 07:49:16,404 INFO L158 Benchmark]: Toolchain (without parser) took 11179.18ms. Allocated memory is still 167.8MB. Free memory was 129.8MB in the beginning and 100.0MB in the end (delta: 29.8MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2025-01-10 07:49:16,404 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 192.9MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:16,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.64ms. Allocated memory is still 167.8MB. Free memory was 129.5MB in the beginning and 119.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 07:49:16,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.19ms. Allocated memory is still 167.8MB. Free memory was 119.4MB in the beginning and 118.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:16,405 INFO L158 Benchmark]: Boogie Preprocessor took 30.12ms. Allocated memory is still 167.8MB. Free memory was 118.2MB in the beginning and 117.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:16,405 INFO L158 Benchmark]: RCFGBuilder took 193.12ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 107.4MB in the end (delta: 9.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-10 07:49:16,405 INFO L158 Benchmark]: BuchiAutomizer took 10729.70ms. Allocated memory is still 167.8MB. Free memory was 107.4MB in the beginning and 101.7MB in the end (delta: 5.7MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2025-01-10 07:49:16,406 INFO L158 Benchmark]: Witness Printer took 3.51ms. Allocated memory is still 167.8MB. Free memory was 101.7MB in the beginning and 100.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:16,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 192.9MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.64ms. Allocated memory is still 167.8MB. Free memory was 129.5MB in the beginning and 119.4MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.19ms. Allocated memory is still 167.8MB. Free memory was 119.4MB in the beginning and 118.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.12ms. Allocated memory is still 167.8MB. Free memory was 118.2MB in the beginning and 117.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 193.12ms. Allocated memory is still 167.8MB. Free memory was 117.1MB in the beginning and 107.4MB in the end (delta: 9.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 10729.70ms. Allocated memory is still 167.8MB. Free memory was 107.4MB in the beginning and 101.7MB in the end (delta: 5.7MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Witness Printer took 3.51ms. Allocated memory is still 167.8MB. Free memory was 101.7MB in the beginning and 100.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 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 deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 10 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 23 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.6s and 7 iterations. TraceHistogramMax:13. Analysis of lassos took 5.1s. Construction of modules took 1.1s. Büchi inclusion checks took 4.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 248 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 534 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 510 mSDsluCounter, 689 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 456 mSDsCounter, 315 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1503 IncrementalHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 315 mSolverCounterUnsat, 233 mSDtfsCounter, 1503 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp82 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp80 dnf100 smp100 tf112 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-01-10 07:49:16,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2025-01-10 07:49:16,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-01-10 07:49:16,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-10 07:49:17,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-10 07:49:17,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE