./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c00e63dc 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_2calls_4-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 19:48:09,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 19:48:09,731 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-02-06 19:48:09,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 19:48:09,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 19:48:09,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-02-06 19:48:09,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 19:48:09,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 19:48:09,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 19:48:09,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 19:48:09,750 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 19:48:09,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 19:48:09,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 19:48:09,750 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 19:48:09,750 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-06 19:48:09,750 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-06 19:48:09,750 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-06 19:48:09,750 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-06 19:48:09,750 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-06 19:48:09,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-06 19:48:09,751 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 19:48:09,752 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 19:48:09,752 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 19:48:09,752 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-06 19:48:09,752 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 19:48:09,752 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 19:48:09,752 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 19:48:09,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 19:48:09,752 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 19:48:09,752 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 19:48:09,752 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-06 19:48:09,753 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 -> 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 [2025-02-06 19:48:09,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 19:48:09,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 19:48:09,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 19:48:09,991 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 19:48:09,991 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 19:48:09,993 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2025-02-06 19:48:11,345 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/19e6b0c44/3cec264379474555976429871afe7a0e/FLAGda6a24bd2 [2025-02-06 19:48:11,553 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 19:48:11,555 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2025-02-06 19:48:11,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/19e6b0c44/3cec264379474555976429871afe7a0e/FLAGda6a24bd2 [2025-02-06 19:48:11,577 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/19e6b0c44/3cec264379474555976429871afe7a0e [2025-02-06 19:48:11,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 19:48:11,580 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 19:48:11,581 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 19:48:11,581 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 19:48:11,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 19:48:11,589 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,590 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d34c501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11, skipping insertion in model container [2025-02-06 19:48:11,590 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,601 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 19:48:11,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 19:48:11,711 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 19:48:11,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 19:48:11,730 INFO L204 MainTranslator]: Completed translation [2025-02-06 19:48:11,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11 WrapperNode [2025-02-06 19:48:11,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 19:48:11,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 19:48:11,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 19:48:11,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 19:48:11,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,740 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,748 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2025-02-06 19:48:11,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 19:48:11,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 19:48:11,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 19:48:11,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 19:48:11,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,755 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,762 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]. [2025-02-06 19:48:11,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,763 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,767 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 19:48:11,771 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 19:48:11,772 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 19:48:11,772 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 19:48:11,773 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (1/1) ... [2025-02-06 19:48:11,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:11,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:11,801 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) [2025-02-06 19:48:11,807 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 [2025-02-06 19:48:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 19:48:11,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 19:48:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2025-02-06 19:48:11,825 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2025-02-06 19:48:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2025-02-06 19:48:11,825 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2025-02-06 19:48:11,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 19:48:11,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 19:48:11,865 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 19:48:11,866 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 19:48:11,912 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2025-02-06 19:48:11,921 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2025-02-06 19:48:11,927 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-06 19:48:11,927 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 19:48:11,932 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 19:48:11,932 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 19:48:11,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:48:11 BoogieIcfgContainer [2025-02-06 19:48:11,933 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 19:48:11,934 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-06 19:48:11,934 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-06 19:48:11,937 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-06 19:48:11,938 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:48:11,938 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.02 07:48:11" (1/3) ... [2025-02-06 19:48:11,939 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53472b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 07:48:11, skipping insertion in model container [2025-02-06 19:48:11,939 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:48:11,939 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:11" (2/3) ... [2025-02-06 19:48:11,940 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53472b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 07:48:11, skipping insertion in model container [2025-02-06 19:48:11,940 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:48:11,940 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:48:11" (3/3) ... [2025-02-06 19:48:11,941 INFO L363 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-1.c [2025-02-06 19:48:11,982 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-06 19:48:11,983 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-06 19:48:11,983 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-06 19:48:11,983 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-06 19:48:11,984 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-06 19:48:11,984 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-06 19:48:11,984 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-06 19:48:11,984 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-06 19:48:11,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 19:48:12,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2025-02-06 19:48:12,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:12,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:12,004 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-06 19:48:12,004 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:12,004 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-06 19:48:12,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 19:48:12,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2025-02-06 19:48:12,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:12,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:12,007 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-06 19:48:12,007 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:12,010 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(18, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4;" "call main_#t~ret8#1 := fibo1(main_~x~0#1);"< [2025-02-06 19:48:12,011 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< [2025-02-06 19:48:12,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:12,015 INFO L85 PathProgramCache]: Analyzing trace with hash 39712, now seen corresponding path program 1 times [2025-02-06 19:48:12,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:12,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075895776] [2025-02-06 19:48:12,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:12,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:12,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:48:12,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:48:12,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:12,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:12,080 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:12,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:48:12,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:48:12,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:12,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:12,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:12,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash -255777251, now seen corresponding path program 1 times [2025-02-06 19:48:12,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:12,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410697818] [2025-02-06 19:48:12,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:12,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:12,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:48:12,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:48:12,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:12,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:12,112 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:12,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:48:12,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:48:12,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:12,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:12,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:12,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1413493308, now seen corresponding path program 1 times [2025-02-06 19:48:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:12,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413797578] [2025-02-06 19:48:12,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:12,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:12,132 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 19:48:12,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 19:48:12,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:12,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:12,140 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:12,141 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 19:48:12,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 19:48:12,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:12,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:12,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:12,306 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:12,307 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:12,307 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:12,307 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:12,308 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:48:12,308 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,308 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:12,308 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:12,308 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration1_Loop [2025-02-06 19:48:12,308 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:12,308 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:12,320 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,334 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,337 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,339 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,342 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,344 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,418 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:12,422 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:48:12,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,431 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) [2025-02-06 19:48:12,432 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 [2025-02-06 19:48:12,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:12,432 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:12,449 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:12,449 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:12,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-06 19:48:12,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,463 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) [2025-02-06 19:48:12,464 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 [2025-02-06 19:48:12,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:12,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:12,479 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:12,480 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:12,485 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 [2025-02-06 19:48:12,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,489 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) [2025-02-06 19:48:12,491 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 [2025-02-06 19:48:12,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:12,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:12,504 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:12,504 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:12,510 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 [2025-02-06 19:48:12,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,512 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) [2025-02-06 19:48:12,514 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 [2025-02-06 19:48:12,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:12,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:12,527 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:12,527 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:12,533 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 [2025-02-06 19:48:12,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,536 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) [2025-02-06 19:48:12,538 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 [2025-02-06 19:48:12,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:12,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:12,550 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:12,550 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:12,556 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 [2025-02-06 19:48:12,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,558 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) [2025-02-06 19:48:12,560 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 [2025-02-06 19:48:12,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:12,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:12,578 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 [2025-02-06 19:48:12,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,580 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) [2025-02-06 19:48:12,581 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 [2025-02-06 19:48:12,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:48:12,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:12,622 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:48:12,626 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 [2025-02-06 19:48:12,626 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:12,626 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:12,626 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:12,626 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:12,626 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:48:12,626 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,626 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:12,626 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:12,626 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration1_Loop [2025-02-06 19:48:12,626 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:12,626 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:12,627 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,630 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,642 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,644 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,647 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,648 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,661 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,663 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:12,707 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:12,710 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:48:12,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,713 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) [2025-02-06 19:48:12,715 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 [2025-02-06 19:48:12,716 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 [2025-02-06 19:48:12,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:12,727 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:12,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:12,728 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:12,728 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:12,731 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:12,731 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:12,733 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:12,740 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 [2025-02-06 19:48:12,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,745 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) [2025-02-06 19:48:12,746 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 [2025-02-06 19:48:12,748 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:48:12,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:12,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:12,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:12,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:12,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:12,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:12,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:12,761 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:12,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:12,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,769 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) [2025-02-06 19:48:12,770 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 [2025-02-06 19:48:12,772 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 [2025-02-06 19:48:12,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:12,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:12,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:12,790 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:12,790 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:12,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:12,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:12,801 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:12,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:12,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,810 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2025-02-06 19:48:12,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-06 19:48:12,812 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 [2025-02-06 19:48:12,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:12,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:12,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:12,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:12,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:12,823 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:12,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:12,824 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:12,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:12,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,836 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) [2025-02-06 19:48:12,837 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 [2025-02-06 19:48:12,839 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 [2025-02-06 19:48:12,849 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:12,849 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:12,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:12,849 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:12,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:12,850 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:12,850 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:12,852 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:12,860 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 [2025-02-06 19:48:12,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,862 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) [2025-02-06 19:48:12,868 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 [2025-02-06 19:48:12,868 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 [2025-02-06 19:48:12,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:12,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:12,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:12,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:12,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:12,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:12,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:12,881 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:48:12,884 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 19:48:12,887 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-06 19:48:12,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:12,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:12,897 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) [2025-02-06 19:48:12,901 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 [2025-02-06 19:48:12,901 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:48:12,902 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:48:12,902 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:48:12,902 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2025-02-06 19:48:12,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-06 19:48:12,910 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:48:12,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:12,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:48:12,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:48:12,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:12,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:12,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 19:48:12,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:12,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:48:12,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:48:12,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:12,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:12,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 19:48:12,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:13,051 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2025-02-06 19:48:13,052 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:48:13,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-06 19:48:13,193 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 107 transitions. Complement of second has 28 states. [2025-02-06 19:48:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:13,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:48:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2025-02-06 19:48:13,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 8 letters. [2025-02-06 19:48:13,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:13,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2025-02-06 19:48:13,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:13,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 16 letters. [2025-02-06 19:48:13,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:13,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 107 transitions. [2025-02-06 19:48:13,209 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2025-02-06 19:48:13,213 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 55 states and 75 transitions. [2025-02-06 19:48:13,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2025-02-06 19:48:13,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2025-02-06 19:48:13,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 75 transitions. [2025-02-06 19:48:13,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:13,214 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 75 transitions. [2025-02-06 19:48:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 75 transitions. [2025-02-06 19:48:13,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2025-02-06 19:48:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2025-02-06 19:48:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2025-02-06 19:48:13,232 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2025-02-06 19:48:13,232 INFO L432 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2025-02-06 19:48:13,233 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-06 19:48:13,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2025-02-06 19:48:13,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2025-02-06 19:48:13,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:13,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:13,234 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:13,234 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:13,234 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(18, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4;" "call main_#t~ret8#1 := fibo1(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#37#return;" [2025-02-06 19:48:13,234 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret7 := fibo1(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#37#return;" [2025-02-06 19:48:13,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash -130896422, now seen corresponding path program 1 times [2025-02-06 19:48:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:13,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650419998] [2025-02-06 19:48:13,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:13,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:13,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 19:48:13,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 19:48:13,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:13,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 19:48:13,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:13,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650419998] [2025-02-06 19:48:13,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650419998] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 19:48:13,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 19:48:13,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 19:48:13,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56566286] [2025-02-06 19:48:13,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 19:48:13,318 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-06 19:48:13,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:13,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1646684539, now seen corresponding path program 1 times [2025-02-06 19:48:13,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:13,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100062587] [2025-02-06 19:48:13,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:13,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:13,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 19:48:13,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 19:48:13,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:13,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 19:48:13,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:13,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100062587] [2025-02-06 19:48:13,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100062587] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 19:48:13,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 19:48:13,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 19:48:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151936186] [2025-02-06 19:48:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 19:48:13,364 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-02-06 19:48:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:48:13,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 19:48:13,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 19:48:13,366 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 19:48:13,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:48:13,411 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2025-02-06 19:48:13,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2025-02-06 19:48:13,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2025-02-06 19:48:13,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 60 states and 79 transitions. [2025-02-06 19:48:13,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2025-02-06 19:48:13,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2025-02-06 19:48:13,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 79 transitions. [2025-02-06 19:48:13,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:13,415 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2025-02-06 19:48:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 79 transitions. [2025-02-06 19:48:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-02-06 19:48:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 44 states have internal predecessors, (49), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-06 19:48:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2025-02-06 19:48:13,419 INFO L240 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2025-02-06 19:48:13,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 19:48:13,420 INFO L432 stractBuchiCegarLoop]: Abstraction has 60 states and 79 transitions. [2025-02-06 19:48:13,420 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-06 19:48:13,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 79 transitions. [2025-02-06 19:48:13,421 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2025-02-06 19:48:13,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:13,421 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:13,421 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:13,421 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:13,421 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(18, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4;" "call main_#t~ret8#1 := fibo1(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#37#return;" [2025-02-06 19:48:13,422 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret7 := fibo1(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#37#return;" [2025-02-06 19:48:13,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:13,422 INFO L85 PathProgramCache]: Analyzing trace with hash 237378914, now seen corresponding path program 1 times [2025-02-06 19:48:13,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:13,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884738030] [2025-02-06 19:48:13,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:13,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:13,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 19:48:13,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 19:48:13,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:13,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:13,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:13,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:13,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884738030] [2025-02-06 19:48:13,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884738030] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 19:48:13,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188271250] [2025-02-06 19:48:13,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:13,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 19:48:13,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:13,534 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 19:48:13,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 19:48:13,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 19:48:13,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 19:48:13,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:13,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:13,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 19:48:13,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:13,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 19:48:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:13,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188271250] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 19:48:13,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 19:48:13,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2025-02-06 19:48:13,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553953890] [2025-02-06 19:48:13,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 19:48:13,653 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-06 19:48:13,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:13,653 INFO L85 PathProgramCache]: Analyzing trace with hash -492186143, now seen corresponding path program 1 times [2025-02-06 19:48:13,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:13,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131087580] [2025-02-06 19:48:13,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:13,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:13,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 19:48:13,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 19:48:13,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:13,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:13,658 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:13,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 19:48:13,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 19:48:13,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:13,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:13,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:13,792 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:13,793 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:13,793 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:13,793 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:13,793 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:48:13,793 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:13,793 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:13,793 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:13,793 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration3_Loop [2025-02-06 19:48:13,793 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:13,793 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:13,794 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:13,796 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:13,797 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:13,799 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:13,800 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:13,802 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:13,804 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:13,808 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:13,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:13,843 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:13,843 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:48:13,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:13,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:13,845 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) [2025-02-06 19:48:13,847 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 [2025-02-06 19:48:13,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:13,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:13,860 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:13,860 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:13,866 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 [2025-02-06 19:48:13,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:13,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:13,868 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) [2025-02-06 19:48:13,869 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 [2025-02-06 19:48:13,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:13,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:13,882 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:13,882 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:13,887 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 [2025-02-06 19:48:13,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:13,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:13,889 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) [2025-02-06 19:48:13,890 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 [2025-02-06 19:48:13,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:13,891 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:13,902 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:13,902 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:13,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2025-02-06 19:48:13,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:13,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:13,910 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) [2025-02-06 19:48:13,912 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 [2025-02-06 19:48:13,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:13,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:13,926 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:13,927 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:13,932 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 [2025-02-06 19:48:13,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:13,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:13,935 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) [2025-02-06 19:48:13,939 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 [2025-02-06 19:48:13,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:13,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:13,950 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:13,950 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=1} Honda state: {fibo2_#t~ret6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:13,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-06 19:48:13,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:13,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:13,960 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) [2025-02-06 19:48:13,962 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 [2025-02-06 19:48:13,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:13,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:13,973 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:13,974 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:13,979 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 [2025-02-06 19:48:13,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:13,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:13,982 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) [2025-02-06 19:48:13,984 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 [2025-02-06 19:48:13,984 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:13,984 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:14,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2025-02-06 19:48:14,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:14,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:14,006 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2025-02-06 19:48:14,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-06 19:48:14,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:48:14,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:14,019 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:48:14,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:14,024 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:14,025 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:14,025 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:14,025 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:14,025 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:48:14,025 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:14,025 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:14,025 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:14,025 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration3_Loop [2025-02-06 19:48:14,025 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:14,025 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:14,026 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:14,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:14,031 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:14,032 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:14,033 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:14,035 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:14,039 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:14,040 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:14,042 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:14,074 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:14,074 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:48:14,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:14,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:14,079 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) [2025-02-06 19:48:14,080 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 [2025-02-06 19:48:14,081 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 [2025-02-06 19:48:14,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:14,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:14,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:14,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:14,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:14,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:14,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:14,093 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:14,098 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 [2025-02-06 19:48:14,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:14,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:14,100 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) [2025-02-06 19:48:14,101 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 [2025-02-06 19:48:14,103 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 [2025-02-06 19:48:14,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:14,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:14,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:14,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:14,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:14,114 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:14,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:14,115 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:14,120 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 [2025-02-06 19:48:14,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:14,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:14,123 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) [2025-02-06 19:48:14,124 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 [2025-02-06 19:48:14,125 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 [2025-02-06 19:48:14,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:14,135 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:14,135 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:14,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:14,135 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:14,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:14,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:14,136 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:14,141 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 [2025-02-06 19:48:14,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:14,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:14,144 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) [2025-02-06 19:48:14,145 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 [2025-02-06 19:48:14,146 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 [2025-02-06 19:48:14,156 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:14,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:14,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:14,157 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:14,157 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:14,157 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:14,157 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:14,159 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:14,164 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 [2025-02-06 19:48:14,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:14,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:14,166 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) [2025-02-06 19:48:14,168 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 [2025-02-06 19:48:14,168 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 [2025-02-06 19:48:14,178 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:14,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:14,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:14,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:14,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:14,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:14,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:14,183 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:14,189 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 [2025-02-06 19:48:14,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:14,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:14,192 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) [2025-02-06 19:48:14,195 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 [2025-02-06 19:48:14,195 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 [2025-02-06 19:48:14,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:14,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:14,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:14,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:14,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:14,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:14,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:14,211 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:48:14,214 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 19:48:14,214 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-06 19:48:14,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:14,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:14,216 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) [2025-02-06 19:48:14,217 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 [2025-02-06 19:48:14,220 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:48:14,220 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:48:14,220 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:48:14,220 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2025-02-06 19:48:14,225 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 [2025-02-06 19:48:14,226 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:48:14,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:14,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 19:48:14,272 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 [2025-02-06 19:48:14,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 19:48:14,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:14,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:14,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 19:48:14,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:14,345 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 19:48:14,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 19:48:14,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:14,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:14,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 19:48:14,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:14,449 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2025-02-06 19:48:14,449 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 19:48:14,763 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 206 states and 282 transitions. Complement of second has 48 states. [2025-02-06 19:48:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 19:48:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 79 transitions. [2025-02-06 19:48:14,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 14 letters. [2025-02-06 19:48:14,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:14,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 30 letters. Loop has 14 letters. [2025-02-06 19:48:14,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:14,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 28 letters. [2025-02-06 19:48:14,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:14,766 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 282 transitions. [2025-02-06 19:48:14,770 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2025-02-06 19:48:14,773 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 182 states and 254 transitions. [2025-02-06 19:48:14,773 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 112 [2025-02-06 19:48:14,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2025-02-06 19:48:14,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2025-02-06 19:48:14,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:14,774 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2025-02-06 19:48:14,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2025-02-06 19:48:14,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 154. [2025-02-06 19:48:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 96 states have (on average 1.28125) internal successors, (123), 104 states have internal predecessors, (123), 35 states have call successors, (36), 19 states have call predecessors, (36), 23 states have return successors, (52), 30 states have call predecessors, (52), 33 states have call successors, (52) [2025-02-06 19:48:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2025-02-06 19:48:14,785 INFO L240 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2025-02-06 19:48:14,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:48:14,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 19:48:14,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-06 19:48:14,785 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 19:48:14,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:48:14,867 INFO L93 Difference]: Finished difference Result 183 states and 249 transitions. [2025-02-06 19:48:14,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 249 transitions. [2025-02-06 19:48:14,870 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2025-02-06 19:48:14,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 245 transitions. [2025-02-06 19:48:14,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2025-02-06 19:48:14,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2025-02-06 19:48:14,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 245 transitions. [2025-02-06 19:48:14,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:14,873 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 245 transitions. [2025-02-06 19:48:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 245 transitions. [2025-02-06 19:48:14,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2025-02-06 19:48:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 111 states have internal predecessors, (129), 38 states have call successors, (40), 20 states have call predecessors, (40), 25 states have return successors, (58), 33 states have call predecessors, (58), 36 states have call successors, (58) [2025-02-06 19:48:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 227 transitions. [2025-02-06 19:48:14,881 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 227 transitions. [2025-02-06 19:48:14,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 19:48:14,882 INFO L432 stractBuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2025-02-06 19:48:14,882 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-06 19:48:14,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 227 transitions. [2025-02-06 19:48:14,883 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2025-02-06 19:48:14,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:14,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:14,884 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:14,884 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:14,884 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4;" "call main_#t~ret8#1 := fibo1(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#39#return;" "#res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5;" "assume true;" >"#37#return;" "call #t~ret7 := fibo1(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#35#return;" "#res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< [2025-02-06 19:48:14,884 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< [2025-02-06 19:48:14,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1782136417, now seen corresponding path program 1 times [2025-02-06 19:48:14,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:14,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478516703] [2025-02-06 19:48:14,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:14,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:14,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 19:48:14,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 19:48:14,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:14,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 19:48:14,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478516703] [2025-02-06 19:48:14,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478516703] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 19:48:14,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149382954] [2025-02-06 19:48:14,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:14,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 19:48:14,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:14,947 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 19:48:14,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-06 19:48:14,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 19:48:14,974 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 19:48:14,975 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:14,975 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:14,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 19:48:14,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 19:48:15,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 19:48:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 19:48:15,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149382954] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 19:48:15,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 19:48:15,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 15 [2025-02-06 19:48:15,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714867360] [2025-02-06 19:48:15,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 19:48:15,292 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-06 19:48:15,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1078791395, now seen corresponding path program 2 times [2025-02-06 19:48:15,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184708545] [2025-02-06 19:48:15,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 19:48:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:15,295 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:48:15,296 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:48:15,296 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 19:48:15,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:15,296 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:15,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:48:15,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:48:15,298 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:15,298 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:15,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:15,375 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:15,375 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:15,375 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:15,375 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:15,375 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:48:15,375 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,375 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:15,375 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:15,375 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration4_Loop [2025-02-06 19:48:15,375 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:15,375 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:15,376 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,380 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,381 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,383 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,384 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,389 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,394 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,395 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,429 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:15,429 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:48:15,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,431 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) [2025-02-06 19:48:15,433 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 [2025-02-06 19:48:15,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:15,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:15,444 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:15,445 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:15,450 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 [2025-02-06 19:48:15,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,452 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2025-02-06 19:48:15,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2025-02-06 19:48:15,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:15,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:15,464 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:15,464 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:15,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:15,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,472 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) [2025-02-06 19:48:15,473 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 [2025-02-06 19:48:15,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:15,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:15,485 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:15,485 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:15,490 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 [2025-02-06 19:48:15,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,493 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) [2025-02-06 19:48:15,494 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 [2025-02-06 19:48:15,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:15,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:15,506 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:15,506 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:15,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:15,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,513 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) [2025-02-06 19:48:15,515 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 [2025-02-06 19:48:15,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:15,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:15,526 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:15,527 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:15,532 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 [2025-02-06 19:48:15,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,534 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) [2025-02-06 19:48:15,535 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 [2025-02-06 19:48:15,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:15,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:15,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:15,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,554 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) [2025-02-06 19:48:15,555 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 [2025-02-06 19:48:15,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:48:15,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:15,577 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:48:15,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:15,585 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:15,585 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:15,585 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:15,585 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:15,585 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:48:15,585 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,585 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:15,585 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:15,585 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration4_Loop [2025-02-06 19:48:15,585 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:15,585 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:15,585 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,592 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,597 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,604 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,611 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,619 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,629 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:15,692 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:15,693 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:48:15,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,695 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) [2025-02-06 19:48:15,700 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 [2025-02-06 19:48:15,701 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 [2025-02-06 19:48:15,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:15,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:15,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:15,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:15,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:15,715 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:15,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:15,716 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:15,721 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 [2025-02-06 19:48:15,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,724 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) [2025-02-06 19:48:15,724 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 [2025-02-06 19:48:15,726 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 [2025-02-06 19:48:15,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:15,737 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:15,738 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:15,738 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:15,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:15,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:15,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:15,740 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:15,745 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 [2025-02-06 19:48:15,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,748 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) [2025-02-06 19:48:15,749 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 [2025-02-06 19:48:15,749 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 [2025-02-06 19:48:15,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:15,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:15,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:15,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:15,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:15,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:15,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:15,761 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:15,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:15,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,769 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) [2025-02-06 19:48:15,769 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 [2025-02-06 19:48:15,771 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 [2025-02-06 19:48:15,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:15,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:15,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:15,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:15,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:15,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:15,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:15,782 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:15,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2025-02-06 19:48:15,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,789 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) [2025-02-06 19:48:15,792 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 [2025-02-06 19:48:15,793 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 [2025-02-06 19:48:15,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:15,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:15,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:15,803 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:15,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:15,803 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:15,803 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:15,804 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:15,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:15,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,812 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) [2025-02-06 19:48:15,813 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 [2025-02-06 19:48:15,814 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 [2025-02-06 19:48:15,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:15,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:15,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:15,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:15,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:15,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:15,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:15,825 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:15,830 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 [2025-02-06 19:48:15,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,834 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2025-02-06 19:48:15,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2025-02-06 19:48:15,837 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 [2025-02-06 19:48:15,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:15,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:15,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:15,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:15,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:15,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:15,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:15,850 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:48:15,852 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 19:48:15,852 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-06 19:48:15,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:15,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:15,856 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) [2025-02-06 19:48:15,857 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 [2025-02-06 19:48:15,858 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:48:15,858 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:48:15,858 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:48:15,858 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2025-02-06 19:48:15,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:15,864 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:48:15,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:15,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 19:48:15,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 19:48:15,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:15,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:15,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 19:48:15,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:16,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:48:16,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:48:16,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:16,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:16,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 19:48:16,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:16,193 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2025-02-06 19:48:16,193 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 19:48:16,303 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 658 states and 934 transitions. Complement of second has 30 states. [2025-02-06 19:48:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 19:48:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2025-02-06 19:48:16,321 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 36 letters. Loop has 8 letters. [2025-02-06 19:48:16,321 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:16,321 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-06 19:48:16,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:16,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:16,344 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 19:48:16,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 19:48:16,365 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:16,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:16,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 19:48:16,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:16,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:48:16,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:48:16,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:16,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:16,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 19:48:16,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:16,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:16,595 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2025-02-06 19:48:16,595 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 19:48:16,706 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 658 states and 934 transitions. Complement of second has 30 states. [2025-02-06 19:48:16,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 19:48:16,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2025-02-06 19:48:16,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 36 letters. Loop has 8 letters. [2025-02-06 19:48:16,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:16,708 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-06 19:48:16,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:16,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 19:48:16,749 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 19:48:16,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:16,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:16,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 19:48:16,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:16,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:48:16,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:48:16,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:16,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:16,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 19:48:16,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:16,980 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 5 loop predicates [2025-02-06 19:48:16,980 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 19:48:17,100 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 538 states and 752 transitions. Complement of second has 29 states. [2025-02-06 19:48:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 19:48:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2025-02-06 19:48:17,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 36 letters. Loop has 8 letters. [2025-02-06 19:48:17,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:17,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 44 letters. Loop has 8 letters. [2025-02-06 19:48:17,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:17,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 36 letters. Loop has 16 letters. [2025-02-06 19:48:17,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:17,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 538 states and 752 transitions. [2025-02-06 19:48:17,109 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2025-02-06 19:48:17,115 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 538 states to 437 states and 632 transitions. [2025-02-06 19:48:17,115 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 187 [2025-02-06 19:48:17,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2025-02-06 19:48:17,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 437 states and 632 transitions. [2025-02-06 19:48:17,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:17,116 INFO L218 hiAutomatonCegarLoop]: Abstraction has 437 states and 632 transitions. [2025-02-06 19:48:17,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states and 632 transitions. [2025-02-06 19:48:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 366. [2025-02-06 19:48:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 244 states have (on average 1.2868852459016393) internal successors, (314), 265 states have internal predecessors, (314), 71 states have call successors, (74), 55 states have call predecessors, (74), 51 states have return successors, (118), 45 states have call predecessors, (118), 69 states have call successors, (118) [2025-02-06 19:48:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 506 transitions. [2025-02-06 19:48:17,138 INFO L240 hiAutomatonCegarLoop]: Abstraction has 366 states and 506 transitions. [2025-02-06 19:48:17,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:48:17,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 19:48:17,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2025-02-06 19:48:17,142 INFO L87 Difference]: Start difference. First operand 366 states and 506 transitions. Second operand has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 11 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2025-02-06 19:48:17,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:48:17,325 INFO L93 Difference]: Finished difference Result 398 states and 546 transitions. [2025-02-06 19:48:17,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 546 transitions. [2025-02-06 19:48:17,329 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 48 [2025-02-06 19:48:17,333 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 361 states and 506 transitions. [2025-02-06 19:48:17,333 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 194 [2025-02-06 19:48:17,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2025-02-06 19:48:17,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 361 states and 506 transitions. [2025-02-06 19:48:17,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:17,334 INFO L218 hiAutomatonCegarLoop]: Abstraction has 361 states and 506 transitions. [2025-02-06 19:48:17,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states and 506 transitions. [2025-02-06 19:48:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 325. [2025-02-06 19:48:17,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 216 states have (on average 1.2314814814814814) internal successors, (266), 242 states have internal predecessors, (266), 59 states have call successors, (61), 46 states have call predecessors, (61), 50 states have return successors, (105), 36 states have call predecessors, (105), 57 states have call successors, (105) [2025-02-06 19:48:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 432 transitions. [2025-02-06 19:48:17,350 INFO L240 hiAutomatonCegarLoop]: Abstraction has 325 states and 432 transitions. [2025-02-06 19:48:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 19:48:17,351 INFO L432 stractBuchiCegarLoop]: Abstraction has 325 states and 432 transitions. [2025-02-06 19:48:17,351 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-06 19:48:17,351 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 325 states and 432 transitions. [2025-02-06 19:48:17,353 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2025-02-06 19:48:17,353 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:17,353 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:17,354 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:17,354 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2025-02-06 19:48:17,355 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(18, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4;" "call main_#t~ret8#1 := fibo1(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#39#return;" "#res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5;" "assume true;" >"#37#return;" "call #t~ret7 := fibo1(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#35#return;" "#res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< [2025-02-06 19:48:17,355 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#39#return;" "#res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5;" "assume true;" >"#37#return;" "call #t~ret7 := fibo1(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#39#return;" "#res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5;" "assume true;" >"#35#return;" "#res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< [2025-02-06 19:48:17,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash 328217815, now seen corresponding path program 1 times [2025-02-06 19:48:17,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:17,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112189990] [2025-02-06 19:48:17,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:17,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:17,358 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 19:48:17,362 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 19:48:17,362 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:17,362 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 19:48:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:17,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112189990] [2025-02-06 19:48:17,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112189990] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 19:48:17,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196271420] [2025-02-06 19:48:17,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:17,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 19:48:17,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:17,467 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 19:48:17,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-02-06 19:48:17,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 19:48:17,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 19:48:17,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:17,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:17,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 19:48:17,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:17,549 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 19:48:17,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 19:48:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 19:48:17,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196271420] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 19:48:17,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 19:48:17,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2025-02-06 19:48:17,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979825583] [2025-02-06 19:48:17,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 19:48:17,708 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-06 19:48:17,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash 309469053, now seen corresponding path program 1 times [2025-02-06 19:48:17,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461628412] [2025-02-06 19:48:17,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:17,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 19:48:17,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 19:48:17,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:17,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-02-06 19:48:17,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461628412] [2025-02-06 19:48:17,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461628412] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 19:48:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363585345] [2025-02-06 19:48:17,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:17,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 19:48:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:17,838 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 19:48:17,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-02-06 19:48:17,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 19:48:17,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 19:48:17,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:17,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:17,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 19:48:17,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-06 19:48:17,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 19:48:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-06 19:48:18,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363585345] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 19:48:18,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 19:48:18,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2025-02-06 19:48:18,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033343726] [2025-02-06 19:48:18,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 19:48:18,230 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-02-06 19:48:18,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:48:18,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 19:48:18,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-02-06 19:48:18,231 INFO L87 Difference]: Start difference. First operand 325 states and 432 transitions. cyclomatic complexity: 114 Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2025-02-06 19:48:18,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:48:18,311 INFO L93 Difference]: Finished difference Result 355 states and 480 transitions. [2025-02-06 19:48:18,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 355 states and 480 transitions. [2025-02-06 19:48:18,314 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2025-02-06 19:48:18,317 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 355 states to 352 states and 476 transitions. [2025-02-06 19:48:18,317 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 189 [2025-02-06 19:48:18,317 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 189 [2025-02-06 19:48:18,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 352 states and 476 transitions. [2025-02-06 19:48:18,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:18,317 INFO L218 hiAutomatonCegarLoop]: Abstraction has 352 states and 476 transitions. [2025-02-06 19:48:18,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states and 476 transitions. [2025-02-06 19:48:18,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 332. [2025-02-06 19:48:18,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 220 states have (on average 1.2272727272727273) internal successors, (270), 248 states have internal predecessors, (270), 59 states have call successors, (61), 46 states have call predecessors, (61), 53 states have return successors, (112), 37 states have call predecessors, (112), 57 states have call successors, (112) [2025-02-06 19:48:18,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 443 transitions. [2025-02-06 19:48:18,326 INFO L240 hiAutomatonCegarLoop]: Abstraction has 332 states and 443 transitions. [2025-02-06 19:48:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 19:48:18,327 INFO L432 stractBuchiCegarLoop]: Abstraction has 332 states and 443 transitions. [2025-02-06 19:48:18,327 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-06 19:48:18,327 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 332 states and 443 transitions. [2025-02-06 19:48:18,328 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2025-02-06 19:48:18,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:18,328 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:18,329 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:18,329 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:18,329 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(18, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4;" "call main_#t~ret8#1 := fibo1(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#37#return;" "call #t~ret7 := fibo1(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#35#return;" "#res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7;" "assume true;" >"#41#return;" [2025-02-06 19:48:18,329 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#39#return;" "#res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5;" "assume true;" >"#37#return;" "call #t~ret7 := fibo1(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#35#return;" "#res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7;" "assume true;" >"#41#return;" [2025-02-06 19:48:18,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:18,329 INFO L85 PathProgramCache]: Analyzing trace with hash -504148149, now seen corresponding path program 1 times [2025-02-06 19:48:18,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:18,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181626239] [2025-02-06 19:48:18,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:18,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:18,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 19:48:18,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 19:48:18,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:18,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 19:48:18,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181626239] [2025-02-06 19:48:18,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181626239] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 19:48:18,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274504312] [2025-02-06 19:48:18,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:18,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 19:48:18,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:18,436 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 19:48:18,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-02-06 19:48:18,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 19:48:18,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 19:48:18,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:18,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:18,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 19:48:18,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:18,519 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 19:48:18,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 19:48:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 19:48:18,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274504312] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 19:48:18,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 19:48:18,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2025-02-06 19:48:18,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584368168] [2025-02-06 19:48:18,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 19:48:18,652 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-06 19:48:18,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:18,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1958894535, now seen corresponding path program 1 times [2025-02-06 19:48:18,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:18,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714360007] [2025-02-06 19:48:18,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:18,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:18,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 19:48:18,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 19:48:18,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:18,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 19:48:18,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:18,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714360007] [2025-02-06 19:48:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714360007] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 19:48:18,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944550014] [2025-02-06 19:48:18,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:18,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 19:48:18,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:18,726 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 19:48:18,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-02-06 19:48:18,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 19:48:18,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 19:48:18,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:18,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:18,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 19:48:18,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-06 19:48:18,821 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 19:48:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-06 19:48:19,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944550014] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 19:48:19,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 19:48:19,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-02-06 19:48:19,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474583985] [2025-02-06 19:48:19,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 19:48:19,028 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-02-06 19:48:19,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:48:19,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 19:48:19,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2025-02-06 19:48:19,029 INFO L87 Difference]: Start difference. First operand 332 states and 443 transitions. cyclomatic complexity: 118 Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2025-02-06 19:48:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:48:19,211 INFO L93 Difference]: Finished difference Result 351 states and 426 transitions. [2025-02-06 19:48:19,211 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 351 states and 426 transitions. [2025-02-06 19:48:19,217 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 50 [2025-02-06 19:48:19,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 351 states to 215 states and 252 transitions. [2025-02-06 19:48:19,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2025-02-06 19:48:19,220 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 99 [2025-02-06 19:48:19,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 215 states and 252 transitions. [2025-02-06 19:48:19,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:19,224 INFO L218 hiAutomatonCegarLoop]: Abstraction has 215 states and 252 transitions. [2025-02-06 19:48:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states and 252 transitions. [2025-02-06 19:48:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 203. [2025-02-06 19:48:19,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 150 states have internal predecessors, (163), 40 states have call successors, (41), 32 states have call predecessors, (41), 26 states have return successors, (36), 20 states have call predecessors, (36), 27 states have call successors, (36) [2025-02-06 19:48:19,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 240 transitions. [2025-02-06 19:48:19,232 INFO L240 hiAutomatonCegarLoop]: Abstraction has 203 states and 240 transitions. [2025-02-06 19:48:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 19:48:19,233 INFO L432 stractBuchiCegarLoop]: Abstraction has 203 states and 240 transitions. [2025-02-06 19:48:19,233 INFO L338 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2025-02-06 19:48:19,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 203 states and 240 transitions. [2025-02-06 19:48:19,234 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2025-02-06 19:48:19,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:19,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:19,235 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:19,235 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:19,235 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(18, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4;" "call main_#t~ret8#1 := fibo1(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#39#return;" "#res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5;" "assume true;" >"#37#return;" "call #t~ret7 := fibo1(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#41#return;" [2025-02-06 19:48:19,235 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#41#return;" [2025-02-06 19:48:19,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1615246529, now seen corresponding path program 1 times [2025-02-06 19:48:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:19,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777282193] [2025-02-06 19:48:19,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:19,238 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 19:48:19,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 19:48:19,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:19,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 19:48:19,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777282193] [2025-02-06 19:48:19,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777282193] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 19:48:19,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286107287] [2025-02-06 19:48:19,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:19,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 19:48:19,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,300 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 19:48:19,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-02-06 19:48:19,322 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 19:48:19,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 19:48:19,330 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:19,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:19,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 19:48:19,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 19:48:19,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 19:48:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 19:48:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286107287] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 19:48:19,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 19:48:19,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2025-02-06 19:48:19,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383831095] [2025-02-06 19:48:19,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 19:48:19,439 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-06 19:48:19,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:19,439 INFO L85 PathProgramCache]: Analyzing trace with hash 448115169, now seen corresponding path program 1 times [2025-02-06 19:48:19,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:19,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789258082] [2025-02-06 19:48:19,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:19,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:19,441 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 19:48:19,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 19:48:19,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:19,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:19,442 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:19,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 19:48:19,443 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 19:48:19,443 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:19,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:19,444 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:19,550 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:19,550 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:19,551 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:19,551 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:19,551 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:48:19,551 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,551 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:19,551 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:19,551 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration7_Loop [2025-02-06 19:48:19,551 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:19,551 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:19,551 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,555 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,556 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,557 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,559 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,560 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,563 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,565 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,566 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,596 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:19,596 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:48:19,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,600 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2025-02-06 19:48:19,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2025-02-06 19:48:19,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:19,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:19,612 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:19,613 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=2} Honda state: {fibo1_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:19,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2025-02-06 19:48:19,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,620 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2025-02-06 19:48:19,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2025-02-06 19:48:19,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:19,622 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:19,632 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:19,632 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:19,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2025-02-06 19:48:19,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,640 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2025-02-06 19:48:19,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2025-02-06 19:48:19,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:19,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:19,653 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:19,653 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:19,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:19,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,661 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2025-02-06 19:48:19,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2025-02-06 19:48:19,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:19,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:19,673 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:19,673 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:19,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2025-02-06 19:48:19,679 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Exception during sending of exit command (exit): Stream closed [2025-02-06 19:48:19,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,681 INFO L229 MonitoredProcess]: Starting monitored process 57 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) [2025-02-06 19:48:19,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2025-02-06 19:48:19,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:19,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:19,693 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:19,694 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:19,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2025-02-06 19:48:19,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,701 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2025-02-06 19:48:19,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2025-02-06 19:48:19,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:19,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:19,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2025-02-06 19:48:19,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,722 INFO L229 MonitoredProcess]: Starting monitored process 59 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) [2025-02-06 19:48:19,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2025-02-06 19:48:19,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:48:19,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:19,736 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:48:19,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2025-02-06 19:48:19,741 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:19,741 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:19,741 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:19,741 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:19,741 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:48:19,741 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,741 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:19,741 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:19,741 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration7_Loop [2025-02-06 19:48:19,741 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:19,741 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:19,744 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,745 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,747 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,748 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,755 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,758 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,767 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:19,795 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:19,796 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:48:19,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,798 INFO L229 MonitoredProcess]: Starting monitored process 60 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) [2025-02-06 19:48:19,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2025-02-06 19:48:19,800 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 [2025-02-06 19:48:19,810 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:19,810 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:19,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:19,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:19,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:19,810 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:19,810 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:19,811 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:19,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2025-02-06 19:48:19,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,818 INFO L229 MonitoredProcess]: Starting monitored process 61 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) [2025-02-06 19:48:19,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2025-02-06 19:48:19,821 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 [2025-02-06 19:48:19,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:19,830 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:19,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:19,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:19,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:19,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:19,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:19,836 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:19,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2025-02-06 19:48:19,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,847 INFO L229 MonitoredProcess]: Starting monitored process 62 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) [2025-02-06 19:48:19,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2025-02-06 19:48:19,849 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 [2025-02-06 19:48:19,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:19,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:19,859 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:19,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:19,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:19,859 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:19,859 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:19,862 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:19,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:19,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,872 INFO L229 MonitoredProcess]: Starting monitored process 63 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) [2025-02-06 19:48:19,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2025-02-06 19:48:19,874 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 [2025-02-06 19:48:19,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:19,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:19,884 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:19,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:19,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:19,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:19,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:19,886 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:19,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2025-02-06 19:48:19,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,894 INFO L229 MonitoredProcess]: Starting monitored process 64 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) [2025-02-06 19:48:19,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2025-02-06 19:48:19,897 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 [2025-02-06 19:48:19,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:19,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:19,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:19,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:19,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:19,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:19,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:19,909 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:48:19,911 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 19:48:19,911 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-06 19:48:19,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:19,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:19,913 INFO L229 MonitoredProcess]: Starting monitored process 65 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) [2025-02-06 19:48:19,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2025-02-06 19:48:19,940 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:48:19,940 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:48:19,941 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:48:19,941 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2025-02-06 19:48:19,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:19,951 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:48:19,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:19,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 19:48:19,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 19:48:19,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:19,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:19,994 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 19:48:19,995 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:20,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 19:48:20,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 19:48:20,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:20,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:20,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 19:48:20,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:20,212 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2025-02-06 19:48:20,212 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 19:48:20,461 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 863 states and 1012 transitions. Complement of second has 48 states. [2025-02-06 19:48:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 19:48:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 60 transitions. [2025-02-06 19:48:20,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 60 transitions. Stem has 38 letters. Loop has 14 letters. [2025-02-06 19:48:20,463 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:20,463 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-06 19:48:20,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:20,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 19:48:20,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 19:48:20,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:20,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:20,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 19:48:20,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:20,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 19:48:20,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 19:48:20,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:20,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:20,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 19:48:20,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:20,714 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2025-02-06 19:48:20,714 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 19:48:20,904 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 514 states and 602 transitions. Complement of second has 30 states. [2025-02-06 19:48:20,904 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 [2025-02-06 19:48:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 19:48:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2025-02-06 19:48:20,905 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 38 letters. Loop has 14 letters. [2025-02-06 19:48:20,905 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:20,905 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-06 19:48:20,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:20,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 19:48:20,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 19:48:20,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:20,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:20,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 19:48:20,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:21,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 19:48:21,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 19:48:21,075 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:21,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:21,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 19:48:21,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:21,152 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 8 loop predicates [2025-02-06 19:48:21,152 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 19:48:21,410 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1217 states and 1428 transitions. Complement of second has 121 states. [2025-02-06 19:48:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-06 19:48:21,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 67 transitions. [2025-02-06 19:48:21,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 38 letters. Loop has 14 letters. [2025-02-06 19:48:21,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:21,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 52 letters. Loop has 14 letters. [2025-02-06 19:48:21,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:21,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 38 letters. Loop has 28 letters. [2025-02-06 19:48:21,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:21,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1217 states and 1428 transitions. [2025-02-06 19:48:21,419 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 154 [2025-02-06 19:48:21,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1217 states to 624 states and 740 transitions. [2025-02-06 19:48:21,423 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 267 [2025-02-06 19:48:21,423 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 281 [2025-02-06 19:48:21,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 624 states and 740 transitions. [2025-02-06 19:48:21,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:21,423 INFO L218 hiAutomatonCegarLoop]: Abstraction has 624 states and 740 transitions. [2025-02-06 19:48:21,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states and 740 transitions. [2025-02-06 19:48:21,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 453. [2025-02-06 19:48:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 309 states have (on average 1.1844660194174756) internal successors, (366), 334 states have internal predecessors, (366), 83 states have call successors, (87), 73 states have call predecessors, (87), 61 states have return successors, (78), 45 states have call predecessors, (78), 60 states have call successors, (78) [2025-02-06 19:48:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 531 transitions. [2025-02-06 19:48:21,432 INFO L240 hiAutomatonCegarLoop]: Abstraction has 453 states and 531 transitions. [2025-02-06 19:48:21,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:48:21,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 19:48:21,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2025-02-06 19:48:21,433 INFO L87 Difference]: Start difference. First operand 453 states and 531 transitions. Second operand has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-06 19:48:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:48:21,531 INFO L93 Difference]: Finished difference Result 280 states and 304 transitions. [2025-02-06 19:48:21,531 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 280 states and 304 transitions. [2025-02-06 19:48:21,532 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2025-02-06 19:48:21,533 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 280 states to 86 states and 90 transitions. [2025-02-06 19:48:21,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2025-02-06 19:48:21,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2025-02-06 19:48:21,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 90 transitions. [2025-02-06 19:48:21,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:48:21,533 INFO L218 hiAutomatonCegarLoop]: Abstraction has 86 states and 90 transitions. [2025-02-06 19:48:21,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 90 transitions. [2025-02-06 19:48:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2025-02-06 19:48:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 states have internal predecessors, (50), 13 states have call successors, (13), 12 states have call predecessors, (13), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 19:48:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2025-02-06 19:48:21,535 INFO L240 hiAutomatonCegarLoop]: Abstraction has 67 states and 70 transitions. [2025-02-06 19:48:21,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 19:48:21,536 INFO L432 stractBuchiCegarLoop]: Abstraction has 67 states and 70 transitions. [2025-02-06 19:48:21,536 INFO L338 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2025-02-06 19:48:21,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 70 transitions. [2025-02-06 19:48:21,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2025-02-06 19:48:21,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:21,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:21,537 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 19:48:21,537 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2025-02-06 19:48:21,537 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4;" "call main_#t~ret8#1 := fibo1(main_~x~0#1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#41#return;" "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume ~n < 1;#res := 0;" "assume true;" >"#39#return;" "#res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5;" "assume true;" >"#37#return;" "call #t~ret7 := fibo1(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#35#return;" "#res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7;" "assume true;" >"#41#return;" [2025-02-06 19:48:21,537 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret5 := fibo2(~n - 2);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret6 := fibo1(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume !(1 == ~n);" "call #t~ret4 := fibo2(~n - 1);"< "~n := #in~n;" "assume !(~n < 1);" "assume 1 == ~n;#res := 1;" "assume true;" >"#41#return;" [2025-02-06 19:48:21,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:21,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2013638431, now seen corresponding path program 1 times [2025-02-06 19:48:21,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:21,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138213111] [2025-02-06 19:48:21,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:21,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:21,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 19:48:21,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 19:48:21,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:21,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:21,542 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:21,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 19:48:21,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 19:48:21,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:21,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:21,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:21,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:21,550 INFO L85 PathProgramCache]: Analyzing trace with hash -477908923, now seen corresponding path program 2 times [2025-02-06 19:48:21,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:21,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305201160] [2025-02-06 19:48:21,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 19:48:21,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:21,554 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 22 statements into 2 equivalence classes. [2025-02-06 19:48:21,555 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 19:48:21,556 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 19:48:21,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:21,556 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:21,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 19:48:21,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 19:48:21,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:21,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:21,558 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:21,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash -212069149, now seen corresponding path program 2 times [2025-02-06 19:48:21,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:21,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601739118] [2025-02-06 19:48:21,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 19:48:21,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:21,564 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-02-06 19:48:21,593 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 19:48:21,593 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 19:48:21,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:21,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2025-02-06 19:48:21,660 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-06 19:48:21,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:21,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601739118] [2025-02-06 19:48:21,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601739118] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 19:48:21,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969455556] [2025-02-06 19:48:21,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 19:48:21,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 19:48:21,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:21,663 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 19:48:21,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2025-02-06 19:48:21,693 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-02-06 19:48:21,710 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-02-06 19:48:21,710 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 19:48:21,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:21,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 19:48:21,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-06 19:48:21,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 19:48:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-02-06 19:48:21,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969455556] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 19:48:21,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 19:48:21,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 12 [2025-02-06 19:48:21,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817645818] [2025-02-06 19:48:21,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 19:48:22,076 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:22,076 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:22,076 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:22,076 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:22,076 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:48:22,076 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:22,076 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:22,076 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:22,076 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration8_Loop [2025-02-06 19:48:22,076 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:22,076 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:22,077 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,081 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,082 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,087 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,088 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,090 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,092 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,093 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,095 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,132 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:22,132 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:48:22,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:22,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:22,134 INFO L229 MonitoredProcess]: Starting monitored process 67 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) [2025-02-06 19:48:22,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2025-02-06 19:48:22,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:22,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:22,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:22,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:22,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:22,163 INFO L229 MonitoredProcess]: Starting monitored process 68 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) [2025-02-06 19:48:22,166 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:48:22,166 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:22,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2025-02-06 19:48:22,177 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:48:22,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2025-02-06 19:48:22,182 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:22,182 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:22,182 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:22,182 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:22,182 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:48:22,182 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:22,182 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:22,182 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:22,182 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration8_Loop [2025-02-06 19:48:22,183 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:22,183 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:22,183 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,186 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,188 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,189 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,191 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,192 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,193 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,194 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,195 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:22,227 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:22,228 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:48:22,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:22,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:22,230 INFO L229 MonitoredProcess]: Starting monitored process 69 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) [2025-02-06 19:48:22,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2025-02-06 19:48:22,232 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 [2025-02-06 19:48:22,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:22,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:22,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:22,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:22,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:22,244 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:22,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:22,246 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:48:22,247 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-02-06 19:48:22,247 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-06 19:48:22,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:22,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:22,249 INFO L229 MonitoredProcess]: Starting monitored process 70 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) [2025-02-06 19:48:22,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2025-02-06 19:48:22,252 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:48:22,252 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:48:22,252 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:48:22,252 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2025-02-06 19:48:22,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2025-02-06 19:48:22,257 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:48:22,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:22,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 19:48:22,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 19:48:22,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:22,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:22,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 19:48:22,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:22,446 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 19:48:22,460 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 19:48:22,460 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:22,460 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:22,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 19:48:22,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:22,576 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 12 loop predicates [2025-02-06 19:48:22,576 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 19:48:22,702 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 79 states and 83 transitions. Complement of second has 15 states. [2025-02-06 19:48:22,703 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 [2025-02-06 19:48:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 19:48:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2025-02-06 19:48:22,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 37 letters. Loop has 22 letters. [2025-02-06 19:48:22,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:22,704 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-06 19:48:22,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:22,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 19:48:22,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 19:48:22,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:22,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:22,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 19:48:22,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:22,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 19:48:22,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 19:48:22,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:22,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:22,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 19:48:22,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:23,091 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2025-02-06 19:48:23,092 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 19:48:23,231 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 79 states and 83 transitions. Complement of second has 15 states. [2025-02-06 19:48:23,232 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 [2025-02-06 19:48:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 19:48:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2025-02-06 19:48:23,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 37 letters. Loop has 22 letters. [2025-02-06 19:48:23,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:23,236 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-06 19:48:23,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:23,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 19:48:23,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2025-02-06 19:48:23,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 19:48:23,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:23,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:23,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 19:48:23,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:23,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 19:48:23,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 19:48:23,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:23,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:23,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 19:48:23,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:23,670 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 12 loop predicates [2025-02-06 19:48:23,670 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 19:48:23,937 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 198 states and 208 transitions. Complement of second has 100 states. [2025-02-06 19:48:23,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 19:48:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 56 transitions. [2025-02-06 19:48:23,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 56 transitions. Stem has 37 letters. Loop has 22 letters. [2025-02-06 19:48:23,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:23,941 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-06 19:48:23,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:23,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 19:48:23,991 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 19:48:23,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:23,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:23,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 19:48:23,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:24,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 19:48:24,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 19:48:24,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:24,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:24,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 19:48:24,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:24,307 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2025-02-06 19:48:24,307 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 19:48:24,661 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 113 states and 120 transitions. Complement of second has 41 states. [2025-02-06 19:48:24,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 2 stem states 13 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:24,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 19:48:24,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 54 transitions. [2025-02-06 19:48:24,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 54 transitions. Stem has 37 letters. Loop has 22 letters. [2025-02-06 19:48:24,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:24,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 54 transitions. Stem has 59 letters. Loop has 22 letters. [2025-02-06 19:48:24,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:24,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 54 transitions. Stem has 37 letters. Loop has 44 letters. [2025-02-06 19:48:24,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:24,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 120 transitions. [2025-02-06 19:48:24,666 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 19:48:24,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 0 states and 0 transitions. [2025-02-06 19:48:24,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-06 19:48:24,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-06 19:48:24,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-06 19:48:24,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 19:48:24,667 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:24,667 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:24,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:48:24,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 19:48:24,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-06 19:48:24,667 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 8 states have internal predecessors, (36), 6 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2025-02-06 19:48:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:48:24,667 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-06 19:48:24,667 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-06 19:48:24,667 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 19:48:24,667 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 19:48:24,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-06 19:48:24,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-06 19:48:24,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-06 19:48:24,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 19:48:24,668 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:24,668 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 19:48:24,668 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:24,668 INFO L338 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2025-02-06 19:48:24,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-06 19:48:24,668 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 19:48:24,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-06 19:48:24,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.02 07:48:24 BoogieIcfgContainer [2025-02-06 19:48:24,685 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-06 19:48:24,685 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 19:48:24,685 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 19:48:24,685 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 19:48:24,686 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:48:11" (3/4) ... [2025-02-06 19:48:24,687 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 19:48:24,688 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 19:48:24,688 INFO L158 Benchmark]: Toolchain (without parser) took 13108.48ms. Allocated memory was 167.8MB in the beginning and 453.0MB in the end (delta: 285.2MB). Free memory was 130.0MB in the beginning and 251.4MB in the end (delta: -121.3MB). Peak memory consumption was 158.7MB. Max. memory is 16.1GB. [2025-02-06 19:48:24,688 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:48:24,692 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.57ms. Allocated memory is still 167.8MB. Free memory was 129.6MB in the beginning and 119.3MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 19:48:24,693 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.32ms. Allocated memory is still 167.8MB. Free memory was 119.3MB in the beginning and 118.4MB in the end (delta: 895.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:48:24,693 INFO L158 Benchmark]: Boogie Preprocessor took 20.50ms. Allocated memory is still 167.8MB. Free memory was 118.4MB in the beginning and 117.4MB in the end (delta: 973.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:48:24,693 INFO L158 Benchmark]: IcfgBuilder took 162.20ms. Allocated memory is still 167.8MB. Free memory was 116.9MB in the beginning and 107.1MB in the end (delta: 9.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 19:48:24,693 INFO L158 Benchmark]: BuchiAutomizer took 12751.20ms. Allocated memory was 167.8MB in the beginning and 453.0MB in the end (delta: 285.2MB). Free memory was 106.6MB in the beginning and 251.4MB in the end (delta: -144.8MB). Peak memory consumption was 133.5MB. Max. memory is 16.1GB. [2025-02-06 19:48:24,693 INFO L158 Benchmark]: Witness Printer took 2.43ms. Allocated memory is still 453.0MB. Free memory was 251.4MB in the beginning and 251.4MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:48:24,694 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 150.57ms. Allocated memory is still 167.8MB. Free memory was 129.6MB in the beginning and 119.3MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.32ms. Allocated memory is still 167.8MB. Free memory was 119.3MB in the beginning and 118.4MB in the end (delta: 895.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.50ms. Allocated memory is still 167.8MB. Free memory was 118.4MB in the beginning and 117.4MB in the end (delta: 973.7kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 162.20ms. Allocated memory is still 167.8MB. Free memory was 116.9MB in the beginning and 107.1MB in the end (delta: 9.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 12751.20ms. Allocated memory was 167.8MB in the beginning and 453.0MB in the end (delta: 285.2MB). Free memory was 106.6MB in the beginning and 251.4MB in the end (delta: -144.8MB). Peak memory consumption was 133.5MB. Max. memory is 16.1GB. * Witness Printer took 2.43ms. Allocated memory is still 453.0MB. Free memory was 251.4MB in the beginning and 251.4MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (7 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 8 locations. One deterministic module has affine ranking function n and consists of 14 locations. One nondeterministic module has affine ranking function \old(n) and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 14 locations. One nondeterministic module has affine ranking function n and consists of 16 locations. 7 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.6s and 9 iterations. TraceHistogramMax:6. Analysis of lassos took 5.8s. Construction of modules took 1.1s. Büchi inclusion checks took 5.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 373 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/20 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 799 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 770 mSDsluCounter, 1330 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 907 mSDsCounter, 440 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2241 IncrementalHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 440 mSolverCounterUnsat, 423 mSDtfsCounter, 2241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI3 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq189 hnf91 smp82 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 21 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-06 19:48:24,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2025-02-06 19:48:24,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:25,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-02-06 19:48:25,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:25,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:25,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:25,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:26,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:26,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE