./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_10-2.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_10-2.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 a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 07:49:03,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 07:49:03,092 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-01-10 07:49:03,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 07:49:03,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 07:49:03,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 07:49:03,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 07:49:03,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 07:49:03,127 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 07:49:03,127 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 07:49:03,127 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 07:49:03,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 07:49:03,127 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 07:49:03,128 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-01-10 07:49:03,129 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-01-10 07:49:03,129 INFO L153 SettingsManager]: * Use old map elimination=false [2025-01-10 07:49:03,129 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-01-10 07:49:03,129 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-01-10 07:49:03,129 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-01-10 07:49:03,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 07:49:03,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-01-10 07:49:03,129 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 07:49:03,129 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-01-10 07:49:03,130 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 07:49:03,131 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 07:49:03,131 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 07:49:03,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 07:49:03,131 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 07:49:03,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 07:49:03,131 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-01-10 07:49:03,131 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 -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2025-01-10 07:49:03,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 07:49:03,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 07:49:03,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 07:49:03,349 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 07:49:03,350 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 07:49:03,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2025-01-10 07:49:04,530 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/630bcca09/9a09966eb2f04fcc936a9829604e856a/FLAG80e058f3f [2025-01-10 07:49:04,793 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 07:49:04,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2025-01-10 07:49:04,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/630bcca09/9a09966eb2f04fcc936a9829604e856a/FLAG80e058f3f [2025-01-10 07:49:05,126 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/630bcca09/9a09966eb2f04fcc936a9829604e856a [2025-01-10 07:49:05,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 07:49:05,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 07:49:05,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 07:49:05,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 07:49:05,146 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 07:49:05,151 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,152 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e76790c 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 07:49:05,152 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:49:05" (1/1) ... [2025-01-10 07:49:05,181 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 07:49:05,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 07:49:05,308 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 07:49:05,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 07:49:05,323 INFO L204 MainTranslator]: Completed translation [2025-01-10 07:49:05,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:49:05 WrapperNode [2025-01-10 07:49:05,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 07:49:05,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 07:49:05,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 07:49:05,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 07:49:05,329 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 07:49:05,333 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 07:49:05,341 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2025-01-10 07:49:05,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 07:49:05,342 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 07:49:05,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 07:49:05,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 07:49:05,347 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 07:49:05,347 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 07:49:05,348 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 07:49:05,353 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 07:49:05,353 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 07:49:05,353 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 07:49:05,355 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 07:49:05,355 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 07:49:05,356 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 07:49:05,356 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 07:49:05,357 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 07:49:05,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 07:49:05,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 07:49:05,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 07:49:05,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 07:49:05,359 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 07:49:05,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:05,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:05,381 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 07:49:05,386 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 07:49:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 07:49:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 07:49:05,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 07:49:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 07:49:05,400 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-01-10 07:49:05,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-01-10 07:49:05,435 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 07:49:05,436 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 07:49:05,487 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-01-10 07:49:05,487 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 07:49:05,492 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 07:49:05,493 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 07:49:05,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:49:05 BoogieIcfgContainer [2025-01-10 07:49:05,493 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 07:49:05,494 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-01-10 07:49:05,494 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-01-10 07:49:05,498 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-01-10 07:49:05,498 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 07:49:05,498 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.01 07:49:05" (1/3) ... [2025-01-10 07:49:05,499 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@433ea0bd 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 07:49:05,499 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 07:49:05,499 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 07:49:05,499 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@433ea0bd 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 07:49:05,499 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 07:49:05,499 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 07:49:05,500 INFO L363 chiAutomizerObserver]: Analyzing ICFG fibo_10-2.c [2025-01-10 07:49:05,532 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-01-10 07:49:05,533 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-01-10 07:49:05,533 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-01-10 07:49:05,533 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-01-10 07:49:05,533 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-01-10 07:49:05,533 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-01-10 07:49:05,533 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-01-10 07:49:05,533 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-01-10 07:49:05,536 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 07:49:05,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:05,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:05,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:05,549 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-01-10 07:49:05,549 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-01-10 07:49:05,549 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-01-10 07:49:05,549 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 07:49:05,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:05,551 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:05,551 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:05,551 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-01-10 07:49:05,551 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-01-10 07:49:05,555 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< [2025-01-10 07:49:05,555 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< [2025-01-10 07:49:05,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:05,559 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2025-01-10 07:49:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:05,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457180409] [2025-01-10 07:49:05,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:05,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:05,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:05,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:05,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,613 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:05,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:05,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:05,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:05,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2025-01-10 07:49:05,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:05,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167425299] [2025-01-10 07:49:05,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:05,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:05,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:05,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:05,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,631 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:05,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:05,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:05,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:05,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:05,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2025-01-10 07:49:05,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:05,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987835970] [2025-01-10 07:49:05,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:05,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:05,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 07:49:05,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 07:49:05,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,641 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:05,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-10 07:49:05,646 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-10 07:49:05,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:05,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:05,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:05,726 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:05,727 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:05,727 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:05,727 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:05,727 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:05,727 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:05,728 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:05,728 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:05,728 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2025-01-10 07:49:05,728 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:05,728 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:05,736 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:05,741 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:05,744 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:05,746 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:05,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:05,801 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:05,801 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:05,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:05,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:05,804 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 07:49:05,806 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 07:49:05,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:05,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:05,822 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:05,822 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 07:49:05,828 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 07:49:05,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:05,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:05,830 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 07:49:05,831 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 07:49:05,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:05,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:05,846 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:05,846 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 07:49:05,852 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 07:49:05,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:05,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:05,855 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 07:49:05,858 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 07:49:05,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:05,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:05,869 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:05,870 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 07:49:05,875 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 07:49:05,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:05,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:05,877 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 07:49:05,879 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 07:49:05,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:05,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:05,900 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 07:49:05,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:05,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:05,902 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 07:49:05,904 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 07:49:05,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:05,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:05,947 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:05,953 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 07:49:05,953 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:05,953 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:05,953 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:05,953 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:05,953 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:05,953 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:05,953 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:05,953 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:05,953 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2025-01-10 07:49:05,953 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:05,953 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:05,954 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:05,958 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:05,960 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:05,962 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:05,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,013 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:06,016 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:06,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,019 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 07:49:06,021 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 07:49:06,022 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 07:49:06,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:06,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:06,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:06,033 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:06,033 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:06,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:06,037 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:06,038 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:06,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,046 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 07:49:06,046 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 07:49:06,048 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 07:49:06,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:06,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:06,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:06,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:06,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:06,059 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:06,059 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:06,061 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:06,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,068 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 07:49:06,070 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 07:49:06,071 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 07:49:06,081 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:06,081 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:06,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:06,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:06,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:06,082 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:06,082 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:06,084 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:06,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,096 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 07:49:06,097 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 07:49:06,098 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 07:49:06,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:06,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:06,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:06,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:06,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:06,110 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:06,110 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:06,112 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:06,115 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-01-10 07:49:06,117 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-01-10 07:49:06,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,120 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 07:49:06,121 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 07:49:06,122 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:06,123 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:06,123 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:06,123 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2025-01-10 07:49:06,129 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 07:49:06,131 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:06,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:06,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 07:49:06,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 07:49:06,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:06,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 07:49:06,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:06,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:06,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:06,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:06,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:06,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:06,210 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 07:49:06,227 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 07:49:06,229 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 07:49:06,294 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 07:49:06,310 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 07:49:06,312 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 07:49:06,315 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 07:49:06,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2025-01-10 07:49:06,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2025-01-10 07:49:06,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:06,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2025-01-10 07:49:06,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:06,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2025-01-10 07:49:06,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:06,321 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2025-01-10 07:49:06,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:06,325 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 23 states and 31 transitions. [2025-01-10 07:49:06,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2025-01-10 07:49:06,326 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2025-01-10 07:49:06,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2025-01-10 07:49:06,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:06,327 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2025-01-10 07:49:06,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2025-01-10 07:49:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2025-01-10 07:49:06,341 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 07:49:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2025-01-10 07:49:06,343 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2025-01-10 07:49:06,343 INFO L432 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2025-01-10 07:49:06,343 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-01-10 07:49:06,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2025-01-10 07:49:06,344 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:06,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:06,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:06,344 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:06,344 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:06,345 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#35#return;" [2025-01-10 07:49:06,345 INFO L754 eck$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 07:49:06,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2025-01-10 07:49:06,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:06,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112449541] [2025-01-10 07:49:06,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:06,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 07:49:06,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 07:49:06,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:06,419 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 07:49:06,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112449541] [2025-01-10 07:49:06,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112449541] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 07:49:06,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 07:49:06,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 07:49:06,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304474353] [2025-01-10 07:49:06,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 07:49:06,422 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:06,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:06,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2025-01-10 07:49:06,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:06,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127322092] [2025-01-10 07:49:06,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:06,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:06,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 07:49:06,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 07:49:06,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:06,474 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 07:49:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:06,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127322092] [2025-01-10 07:49:06,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127322092] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 07:49:06,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 07:49:06,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-10 07:49:06,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555960229] [2025-01-10 07:49:06,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 07:49:06,475 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-01-10 07:49:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:06,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-10 07:49:06,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-10 07:49:06,477 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 07:49:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:06,523 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2025-01-10 07:49:06,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2025-01-10 07:49:06,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:06,525 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2025-01-10 07:49:06,525 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2025-01-10 07:49:06,525 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2025-01-10 07:49:06,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2025-01-10 07:49:06,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:06,525 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-01-10 07:49:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2025-01-10 07:49:06,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-10 07:49:06,527 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 07:49:06,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2025-01-10 07:49:06,527 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-01-10 07:49:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-10 07:49:06,528 INFO L432 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-01-10 07:49:06,528 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-01-10 07:49:06,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2025-01-10 07:49:06,529 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2025-01-10 07:49:06,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:06,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:06,529 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:06,529 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:06,530 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#35#return;" [2025-01-10 07:49:06,530 INFO L754 eck$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 07:49:06,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:06,530 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2025-01-10 07:49:06,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:06,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830362381] [2025-01-10 07:49:06,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:06,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:06,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 07:49:06,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 07:49:06,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:06,592 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 07:49:06,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:06,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830362381] [2025-01-10 07:49:06,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830362381] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 07:49:06,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522002361] [2025-01-10 07:49:06,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:06,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 07:49:06,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,594 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 07:49:06,603 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 07:49:06,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 07:49:06,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 07:49:06,623 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,623 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:06,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 07:49:06,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:06,640 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 07:49:06,641 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 07:49:06,712 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 07:49:06,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522002361] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 07:49:06,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 07:49:06,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-10 07:49:06,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366102759] [2025-01-10 07:49:06,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 07:49:06,713 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:06,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2025-01-10 07:49:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:06,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982698922] [2025-01-10 07:49:06,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:06,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:06,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:06,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:06,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:06,719 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:06,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:06,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:06,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:06,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:06,722 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:06,805 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:06,806 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:06,806 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:06,806 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:06,806 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:06,806 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,806 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:06,806 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:06,806 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2025-01-10 07:49:06,806 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:06,806 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:06,807 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,811 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,813 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,847 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:06,847 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:06,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,849 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 07:49:06,850 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 07:49:06,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:06,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,863 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:06,863 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 07:49:06,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,870 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 07:49:06,871 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 07:49:06,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:06,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,883 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:06,883 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 07:49:06,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,891 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 07:49:06,891 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 07:49:06,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:06,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,904 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:06,904 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 07:49:06,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,911 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 07:49:06,913 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 07:49:06,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:06,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:06,932 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 07:49:06,935 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 07:49:06,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:06,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:06,953 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:06,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:06,967 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:06,967 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:06,967 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:06,967 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:06,967 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:06,967 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:06,967 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:06,967 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:06,967 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2025-01-10 07:49:06,967 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:06,967 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:06,968 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,971 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,975 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:06,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:07,009 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:07,009 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:07,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,012 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 07:49:07,016 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 07:49:07,017 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 07:49:07,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:07,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:07,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:07,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:07,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:07,028 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:07,028 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:07,032 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:07,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-01-10 07:49:07,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,041 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 07:49:07,042 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 07:49:07,043 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 07:49:07,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:07,053 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:07,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:07,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:07,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:07,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:07,055 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:07,056 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:07,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:07,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,064 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 07:49:07,065 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 07:49:07,066 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 07:49:07,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:07,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:07,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:07,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:07,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:07,076 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:07,076 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:07,078 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:07,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:07,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,085 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 07:49:07,089 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 07:49:07,090 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-01-10 07:49:07,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:07,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:07,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:07,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:07,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:07,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:07,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:07,102 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:07,107 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 07:49:07,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,109 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 07:49:07,112 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 07:49:07,112 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-01-10 07:49:07,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:07,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:07,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:07,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:07,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:07,123 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:07,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:07,125 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:07,128 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-01-10 07:49:07,128 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-01-10 07:49:07,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:07,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:07,130 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 07:49:07,132 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 07:49:07,133 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:07,133 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:07,133 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:07,133 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2025-01-10 07:49:07,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:07,139 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:07,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:07,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-10 07:49:07,192 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-10 07:49:07,192 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:07,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:07,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-10 07:49:07,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:07,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:07,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:07,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:07,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:07,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:07,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 07:49:07,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:07,387 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 07:49:07,388 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 07:49:07,389 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 07:49:07,617 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 07:49:07,617 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 07:49:07,618 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 07:49:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2025-01-10 07:49:07,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2025-01-10 07:49:07,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:07,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2025-01-10 07:49:07,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:07,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2025-01-10 07:49:07,620 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:07,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2025-01-10 07:49:07,633 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-01-10 07:49:07,640 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2025-01-10 07:49:07,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2025-01-10 07:49:07,641 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2025-01-10 07:49:07,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2025-01-10 07:49:07,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:07,641 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2025-01-10 07:49:07,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2025-01-10 07:49:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2025-01-10 07:49:07,656 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 07:49:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2025-01-10 07:49:07,660 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2025-01-10 07:49:07,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:07,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-10 07:49:07,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-01-10 07:49:07,661 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 07:49:07,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:07,819 INFO L93 Difference]: Finished difference Result 119 states and 163 transitions. [2025-01-10 07:49:07,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 163 transitions. [2025-01-10 07:49:07,822 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-01-10 07:49:07,824 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 158 transitions. [2025-01-10 07:49:07,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2025-01-10 07:49:07,825 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2025-01-10 07:49:07,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 158 transitions. [2025-01-10 07:49:07,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:07,825 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2025-01-10 07:49:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 158 transitions. [2025-01-10 07:49:07,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2025-01-10 07:49:07,831 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 07:49:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2025-01-10 07:49:07,834 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 143 transitions. [2025-01-10 07:49:07,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-10 07:49:07,836 INFO L432 stractBuchiCegarLoop]: Abstraction has 106 states and 143 transitions. [2025-01-10 07:49:07,836 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-01-10 07:49:07,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 143 transitions. [2025-01-10 07:49:07,838 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2025-01-10 07:49:07,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:07,838 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:07,839 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:07,839 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:07,839 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 07:49:07,839 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 07:49:07,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2025-01-10 07:49:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031110834] [2025-01-10 07:49:07,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:07,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:07,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:07,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:07,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:07,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:08,059 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 07:49:08,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:08,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031110834] [2025-01-10 07:49:08,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031110834] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 07:49:08,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508009837] [2025-01-10 07:49:08,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:08,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 07:49:08,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,062 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 07:49:08,064 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 07:49:08,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:08,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:08,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:08,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:08,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-10 07:49:08,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:08,187 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 07:49:08,187 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 07:49:08,499 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 07:49:08,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508009837] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 07:49:08,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 07:49:08,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 20 [2025-01-10 07:49:08,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546684507] [2025-01-10 07:49:08,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 07:49:08,501 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:08,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:08,501 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 2 times [2025-01-10 07:49:08,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:08,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419546589] [2025-01-10 07:49:08,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 07:49:08,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:08,505 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 10 statements into 2 equivalence classes. [2025-01-10 07:49:08,508 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:08,508 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 07:49:08,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:08,508 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:08,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:08,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:08,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:08,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:08,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:08,607 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:08,607 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:08,607 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:08,607 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:08,607 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:08,607 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,607 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:08,607 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:08,608 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2025-01-10 07:49:08,608 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:08,608 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:08,608 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,611 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,613 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,617 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,620 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,649 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:08,650 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:08,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,653 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 07:49:08,654 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 07:49:08,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:08,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:08,666 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:08,666 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 07:49:08,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-01-10 07:49:08,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,675 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 07:49:08,676 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 07:49:08,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:08,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:08,688 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:08,688 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 07:49:08,693 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 07:49:08,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,695 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 07:49:08,702 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 07:49:08,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:08,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:08,719 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 07:49:08,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,721 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 07:49:08,722 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 07:49:08,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:08,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:08,735 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:08,740 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 07:49:08,741 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:08,741 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:08,741 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:08,741 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:08,741 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:08,741 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,741 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:08,741 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:08,741 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2025-01-10 07:49:08,741 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:08,741 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:08,742 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,751 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,753 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,760 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:08,809 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:08,809 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:08,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,811 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 07:49:08,812 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 07:49:08,813 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 07:49:08,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:08,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:08,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:08,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:08,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:08,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:08,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:08,825 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:08,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:08,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,833 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 07:49:08,834 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 07:49:08,834 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 07:49:08,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:08,844 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:08,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:08,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:08,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:08,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:08,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:08,846 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:08,851 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 07:49:08,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,854 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 07:49:08,855 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 07:49:08,855 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 07:49:08,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:08,865 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:08,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:08,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:08,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:08,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:08,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:08,866 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:08,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2025-01-10 07:49:08,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,874 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 07:49:08,875 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 07:49:08,876 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 07:49:08,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:08,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:08,886 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:08,886 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:08,886 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:08,886 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:08,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:08,888 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:08,890 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-01-10 07:49:08,890 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-01-10 07:49:08,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:08,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:08,892 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 07:49:08,894 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 07:49:08,894 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:08,894 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:08,895 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:08,895 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2025-01-10 07:49:08,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2025-01-10 07:49:08,900 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:08,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:08,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:08,956 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:08,956 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:08,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:08,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 07:49:08,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:09,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:09,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:09,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:09,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:09,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 07:49:09,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:09,195 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 07:49:09,196 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 07:49:09,196 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 07:49:09,333 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 07:49:09,373 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 07:49:09,374 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 07:49:09,374 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 07:49:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2025-01-10 07:49:09,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 32 letters. Loop has 10 letters. [2025-01-10 07:49:09,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:09,375 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:09,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:09,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:09,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:09,414 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:09,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:09,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 07:49:09,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:09,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:09,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:09,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:09,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:09,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 07:49:09,558 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:09,618 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 07:49:09,619 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 07:49:09,619 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 07:49:09,803 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 07:49:09,804 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 07:49:09,805 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 07:49:09,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 24 transitions. [2025-01-10 07:49:09,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2025-01-10 07:49:09,806 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:09,806 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:09,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:09,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-10 07:49:09,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-10 07:49:09,878 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:09,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:09,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-10 07:49:09,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:10,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-10 07:49:10,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-10 07:49:10,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:10,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:10,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 07:49:10,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:10,168 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 07:49:10,169 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 07:49:10,169 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 07:49:10,429 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 07:49:10,434 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 07:49:10,435 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 07:49:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2025-01-10 07:49:10,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 10 letters. [2025-01-10 07:49:10,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:10,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 42 letters. Loop has 10 letters. [2025-01-10 07:49:10,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:10,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 20 letters. [2025-01-10 07:49:10,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:10,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 817 states and 1129 transitions. [2025-01-10 07:49:10,459 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2025-01-10 07:49:10,475 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 817 states to 418 states and 629 transitions. [2025-01-10 07:49:10,477 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2025-01-10 07:49:10,478 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 182 [2025-01-10 07:49:10,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 418 states and 629 transitions. [2025-01-10 07:49:10,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:10,479 INFO L218 hiAutomatonCegarLoop]: Abstraction has 418 states and 629 transitions. [2025-01-10 07:49:10,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states and 629 transitions. [2025-01-10 07:49:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 356. [2025-01-10 07:49:10,520 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 07:49:10,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 493 transitions. [2025-01-10 07:49:10,526 INFO L240 hiAutomatonCegarLoop]: Abstraction has 356 states and 493 transitions. [2025-01-10 07:49:10,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:10,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-10 07:49:10,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2025-01-10 07:49:10,528 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 07:49:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:10,817 INFO L93 Difference]: Finished difference Result 620 states and 969 transitions. [2025-01-10 07:49:10,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 620 states and 969 transitions. [2025-01-10 07:49:10,827 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2025-01-10 07:49:10,839 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 620 states to 595 states and 933 transitions. [2025-01-10 07:49:10,839 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 277 [2025-01-10 07:49:10,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 280 [2025-01-10 07:49:10,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 595 states and 933 transitions. [2025-01-10 07:49:10,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:10,842 INFO L218 hiAutomatonCegarLoop]: Abstraction has 595 states and 933 transitions. [2025-01-10 07:49:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states and 933 transitions. [2025-01-10 07:49:10,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 516. [2025-01-10 07:49:10,880 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 07:49:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 764 transitions. [2025-01-10 07:49:10,886 INFO L240 hiAutomatonCegarLoop]: Abstraction has 516 states and 764 transitions. [2025-01-10 07:49:10,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-10 07:49:10,887 INFO L432 stractBuchiCegarLoop]: Abstraction has 516 states and 764 transitions. [2025-01-10 07:49:10,887 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-01-10 07:49:10,887 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 516 states and 764 transitions. [2025-01-10 07:49:10,890 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:10,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:10,890 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:10,893 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:10,893 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-01-10 07:49:10,894 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10;" "call main_#t~ret6#1 := fibo(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#35#return;" "call #t~ret5 := fibo(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< [2025-01-10 07:49:10,894 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo(~n - 1);"< [2025-01-10 07:49:10,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:10,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1746618538, now seen corresponding path program 1 times [2025-01-10 07:49:10,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:10,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901382126] [2025-01-10 07:49:10,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:10,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:10,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:10,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:10,916 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:10,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:11,265 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 07:49:11,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:11,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901382126] [2025-01-10 07:49:11,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901382126] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 07:49:11,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787619104] [2025-01-10 07:49:11,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 07:49:11,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 07:49:11,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,272 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 07:49:11,275 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 07:49:11,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:11,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:11,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:11,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:11,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-10 07:49:11,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:11,395 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 07:49:11,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 07:49:11,648 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 07:49:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787619104] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 07:49:11,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 07:49:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 23 [2025-01-10 07:49:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271566649] [2025-01-10 07:49:11,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 07:49:11,649 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:11,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:11,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 2 times [2025-01-10 07:49:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:11,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659643009] [2025-01-10 07:49:11,650 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 07:49:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:11,651 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:11,653 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:11,653 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-10 07:49:11,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:11,653 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:11,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:11,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:11,654 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:11,654 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:11,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:11,690 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:11,690 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:11,691 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:11,691 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:11,691 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:11,691 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,691 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:11,691 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:11,691 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2025-01-10 07:49:11,691 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:11,691 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:11,692 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,696 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,698 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,704 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,731 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:11,732 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:11,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,735 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 07:49:11,736 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 07:49:11,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:11,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:11,748 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:11,748 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 07:49:11,754 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 07:49:11,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,755 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 07:49:11,756 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 07:49:11,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:11,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:11,768 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:11,768 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 07:49:11,774 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 07:49:11,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,776 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 07:49:11,777 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 07:49:11,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:11,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:11,788 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:11,788 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 07:49:11,793 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 07:49:11,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,796 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 07:49:11,797 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 07:49:11,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:11,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:11,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2025-01-10 07:49:11,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,815 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 07:49:11,817 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 07:49:11,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:11,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:11,839 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:11,842 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 07:49:11,842 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:11,842 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:11,842 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:11,842 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:11,842 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:11,842 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,843 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:11,843 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:11,843 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2025-01-10 07:49:11,843 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:11,843 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:11,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,845 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,846 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,847 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,849 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:11,887 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:11,887 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:11,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,891 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 07:49:11,896 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 07:49:11,901 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 07:49:11,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:11,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:11,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:11,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:11,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:11,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:11,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:11,911 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:11,917 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 07:49:11,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,919 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 07:49:11,920 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 07:49:11,921 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 07:49:11,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:11,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:11,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:11,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:11,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:11,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:11,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:11,932 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:11,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:11,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,943 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 07:49:11,945 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 07:49:11,945 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 07:49:11,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:11,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:11,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:11,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:11,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:11,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:11,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:11,957 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:11,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2025-01-10 07:49:11,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,964 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 07:49:11,965 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 07:49:11,966 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 07:49:11,975 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:11,976 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:11,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:11,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:11,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:11,976 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:11,976 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:11,977 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:11,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:11,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:11,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:11,985 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 07:49:11,986 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 07:49:11,987 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 07:49:11,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:11,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:11,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:11,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:11,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:11,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:11,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:12,000 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:12,002 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-01-10 07:49:12,002 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-01-10 07:49:12,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:12,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:12,004 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 07:49:12,006 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 07:49:12,006 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:12,006 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:12,006 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:12,006 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2025-01-10 07:49:12,012 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 07:49:12,012 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:12,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:12,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:12,080 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 07:49:12,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:12,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:12,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:12,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-10 07:49:12,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:12,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:12,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:12,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:12,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:12,194 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:12,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:12,212 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 07:49:12,212 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 07:49:12,212 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 07:49:12,262 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 07:49:12,263 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 07:49:12,263 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 07:49:12,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2025-01-10 07:49:12,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2025-01-10 07:49:12,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:12,264 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:12,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:12,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:12,315 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:12,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:12,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:12,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-10 07:49:12,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:12,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:12,404 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:12,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:12,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:12,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:12,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:12,426 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 07:49:12,427 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 07:49:12,427 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 07:49:12,471 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 07:49:12,472 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 07:49:12,472 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 07:49:12,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2025-01-10 07:49:12,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2025-01-10 07:49:12,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:12,472 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:12,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:12,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-10 07:49:12,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-10 07:49:12,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:12,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:12,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-10 07:49:12,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:12,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:12,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:12,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:12,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:12,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:12,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:12,649 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 07:49:12,649 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 07:49:12,650 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 07:49:12,732 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 07:49:12,732 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 07:49:12,733 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 07:49:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2025-01-10 07:49:12,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2025-01-10 07:49:12,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:12,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2025-01-10 07:49:12,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:12,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2025-01-10 07:49:12,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:12,734 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 695 states and 946 transitions. [2025-01-10 07:49:12,740 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:12,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 695 states to 556 states and 805 transitions. [2025-01-10 07:49:12,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 205 [2025-01-10 07:49:12,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2025-01-10 07:49:12,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 556 states and 805 transitions. [2025-01-10 07:49:12,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:12,746 INFO L218 hiAutomatonCegarLoop]: Abstraction has 556 states and 805 transitions. [2025-01-10 07:49:12,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states and 805 transitions. [2025-01-10 07:49:12,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 546. [2025-01-10 07:49:12,758 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 07:49:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 791 transitions. [2025-01-10 07:49:12,760 INFO L240 hiAutomatonCegarLoop]: Abstraction has 546 states and 791 transitions. [2025-01-10 07:49:12,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:12,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 07:49:12,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2025-01-10 07:49:12,761 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 07:49:13,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:13,080 INFO L93 Difference]: Finished difference Result 787 states and 1157 transitions. [2025-01-10 07:49:13,081 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 787 states and 1157 transitions. [2025-01-10 07:49:13,087 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:13,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 787 states to 744 states and 1095 transitions. [2025-01-10 07:49:13,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 259 [2025-01-10 07:49:13,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 265 [2025-01-10 07:49:13,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 744 states and 1095 transitions. [2025-01-10 07:49:13,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:13,095 INFO L218 hiAutomatonCegarLoop]: Abstraction has 744 states and 1095 transitions. [2025-01-10 07:49:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states and 1095 transitions. [2025-01-10 07:49:13,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 689. [2025-01-10 07:49:13,110 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 07:49:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 950 transitions. [2025-01-10 07:49:13,114 INFO L240 hiAutomatonCegarLoop]: Abstraction has 689 states and 950 transitions. [2025-01-10 07:49:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-10 07:49:13,114 INFO L432 stractBuchiCegarLoop]: Abstraction has 689 states and 950 transitions. [2025-01-10 07:49:13,114 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-01-10 07:49:13,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 689 states and 950 transitions. [2025-01-10 07:49:13,119 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:13,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 07:49:13,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 07:49:13,121 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [13, 13, 12, 11, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 07:49:13,121 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2025-01-10 07:49:13,121 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 07:49:13,121 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret4 := fibo(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" [2025-01-10 07:49:13,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:13,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1585625609, now seen corresponding path program 2 times [2025-01-10 07:49:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:13,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058259653] [2025-01-10 07:49:13,122 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 07:49:13,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:13,126 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-01-10 07:49:13,136 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 07:49:13,137 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 07:49:13,138 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:13,474 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 07:49:13,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 07:49:13,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058259653] [2025-01-10 07:49:13,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058259653] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-10 07:49:13,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037535428] [2025-01-10 07:49:13,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-10 07:49:13,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-10 07:49:13,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:13,478 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 07:49:13,479 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 07:49:13,503 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 56 statements into 2 equivalence classes. [2025-01-10 07:49:13,516 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 07:49:13,516 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-10 07:49:13,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:13,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-10 07:49:13,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:13,574 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 07:49:13,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-10 07:49:13,763 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 07:49:13,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037535428] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-10 07:49:13,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-10 07:49:13,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 23 [2025-01-10 07:49:13,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864384893] [2025-01-10 07:49:13,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-10 07:49:13,764 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 07:49:13,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:13,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1955414, now seen corresponding path program 3 times [2025-01-10 07:49:13,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 07:49:13,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999978189] [2025-01-10 07:49:13,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-10 07:49:13,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 07:49:13,768 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:13,769 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:13,769 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-01-10 07:49:13,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:13,769 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 07:49:13,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:13,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:13,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:13,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 07:49:13,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 07:49:13,822 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:13,823 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:13,823 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:13,823 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:13,823 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 07:49:13,823 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:13,823 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:13,823 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:13,823 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2025-01-10 07:49:13,823 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:13,823 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:13,824 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:13,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:13,834 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:13,839 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:13,869 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:13,869 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 07:49:13,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:13,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:13,872 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 07:49:13,873 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 07:49:13,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:13,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:13,894 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 07:49:13,894 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 07:49:13,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2025-01-10 07:49:13,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:13,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:13,906 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 07:49:13,907 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 07:49:13,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 07:49:13,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:13,936 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 07:49:13,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:13,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:13,939 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 07:49:13,940 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 07:49:13,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 07:49:13,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 07:49:14,126 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 07:49:14,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:14,133 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 07:49:14,134 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 07:49:14,134 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 07:49:14,134 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 07:49:14,134 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 07:49:14,134 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:14,134 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 07:49:14,134 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 07:49:14,134 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2025-01-10 07:49:14,134 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 07:49:14,134 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 07:49:14,134 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:14,136 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:14,142 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:14,143 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 07:49:14,168 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 07:49:14,168 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 07:49:14,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:14,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:14,169 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 07:49:14,171 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 07:49:14,172 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 07:49:14,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:14,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:14,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:14,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:14,181 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:14,182 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:14,182 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:14,183 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 07:49:14,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:14,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:14,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:14,190 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 07:49:14,192 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 07:49:14,192 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 07:49:14,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 07:49:14,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 07:49:14,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 07:49:14,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 07:49:14,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 07:49:14,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 07:49:14,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 07:49:14,204 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 07:49:14,207 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-01-10 07:49:14,207 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-01-10 07:49:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 07:49:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 07:49:14,209 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 07:49:14,210 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 07:49:14,211 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 07:49:14,211 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 07:49:14,211 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 07:49:14,211 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2025-01-10 07:49:14,216 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 07:49:14,216 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 07:49:14,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:14,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 07:49:14,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 07:49:14,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:14,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:14,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-10 07:49:14,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:14,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:14,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:14,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:14,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:14,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:14,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:14,426 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 07:49:14,431 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 07:49:14,431 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 07:49:14,492 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 07:49:14,494 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 07:49:14,495 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 07:49:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2025-01-10 07:49:14,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 56 letters. Loop has 4 letters. [2025-01-10 07:49:14,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:14,496 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-01-10 07:49:14,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 07:49:14,531 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-10 07:49:14,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-10 07:49:14,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:14,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:14,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-10 07:49:14,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:14,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-01-10 07:49:14,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-01-10 07:49:14,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 07:49:14,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 07:49:14,669 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-10 07:49:14,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 07:49:14,694 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 07:49:14,695 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 07:49:14,695 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 07:49:14,765 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 07:49:14,766 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 07:49:14,767 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 07:49:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2025-01-10 07:49:14,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 56 letters. Loop has 4 letters. [2025-01-10 07:49:14,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:14,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 60 letters. Loop has 4 letters. [2025-01-10 07:49:14,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:14,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 56 letters. Loop has 8 letters. [2025-01-10 07:49:14,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 07:49:14,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 934 states and 1293 transitions. [2025-01-10 07:49:14,777 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2025-01-10 07:49:14,784 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 934 states to 861 states and 1212 transitions. [2025-01-10 07:49:14,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 273 [2025-01-10 07:49:14,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 301 [2025-01-10 07:49:14,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 861 states and 1212 transitions. [2025-01-10 07:49:14,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 07:49:14,785 INFO L218 hiAutomatonCegarLoop]: Abstraction has 861 states and 1212 transitions. [2025-01-10 07:49:14,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states and 1212 transitions. [2025-01-10 07:49:14,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 841. [2025-01-10 07:49:14,802 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 07:49:14,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1188 transitions. [2025-01-10 07:49:14,806 INFO L240 hiAutomatonCegarLoop]: Abstraction has 841 states and 1188 transitions. [2025-01-10 07:49:14,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 07:49:14,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-10 07:49:14,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2025-01-10 07:49:14,808 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 07:49:14,958 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 07:49:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 07:49:15,149 INFO L93 Difference]: Finished difference Result 535 states and 633 transitions. [2025-01-10 07:49:15,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 535 states and 633 transitions. [2025-01-10 07:49:15,155 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-01-10 07:49:15,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 535 states to 0 states and 0 transitions. [2025-01-10 07:49:15,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-01-10 07:49:15,155 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-01-10 07:49:15,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-01-10 07:49:15,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-01-10 07:49:15,156 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:15,156 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-10 07:49:15,157 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-10 07:49:15,157 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-01-10 07:49:15,157 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-01-10 07:49:15,157 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-01-10 07:49:15,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-01-10 07:49:15,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.01 07:49:15 BoogieIcfgContainer [2025-01-10 07:49:15,170 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-01-10 07:49:15,170 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 07:49:15,170 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 07:49:15,171 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 07:49:15,171 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 07:49:15,177 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-10 07:49:15,178 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 07:49:15,179 INFO L158 Benchmark]: Toolchain (without parser) took 10042.78ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 113.4MB in the beginning and 233.4MB in the end (delta: -120.0MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2025-01-10 07:49:15,179 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 131.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:15,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.73ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 103.0MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 07:49:15,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.56ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 101.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:15,183 INFO L158 Benchmark]: Boogie Preprocessor took 15.72ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 100.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:15,183 INFO L158 Benchmark]: RCFGBuilder took 135.28ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 91.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 07:49:15,183 INFO L158 Benchmark]: BuchiAutomizer took 9676.15ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 91.0MB in the beginning and 233.4MB in the end (delta: -142.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 07:49:15,183 INFO L158 Benchmark]: Witness Printer took 7.31ms. Allocated memory is still 285.2MB. Free memory was 233.4MB in the beginning and 233.4MB in the end (delta: 54.1kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 07:49:15,185 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 131.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.73ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 103.0MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.56ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 101.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.72ms. Allocated memory is still 142.6MB. Free memory was 101.6MB in the beginning and 100.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 135.28ms. Allocated memory is still 142.6MB. Free memory was 100.4MB in the beginning and 91.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9676.15ms. Allocated memory was 142.6MB in the beginning and 285.2MB in the end (delta: 142.6MB). Free memory was 91.0MB in the beginning and 233.4MB in the end (delta: -142.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.31ms. Allocated memory is still 285.2MB. Free memory was 233.4MB in the beginning and 233.4MB in the end (delta: 54.1kB). Peak memory consumption was 8.4MB. 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 9.6s and 7 iterations. TraceHistogramMax:13. Analysis of lassos took 4.6s. Construction of modules took 1.0s. Büchi inclusion checks took 3.6s. 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, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 510 mSDsluCounter, 689 SdHoareTripleChecker+Invalid, 1.1s 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: 21ms 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 07:49:15,200 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 07:49:15,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:15,599 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 07:49:15,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-10 07:49:16,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE