./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 48c9605d 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/termination-numeric/Binomial.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:19:58,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:19:58,741 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-02-08 14:19:58,746 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:19:58,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:19:58,746 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-02-08 14:19:58,766 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:19:58,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:19:58,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:19:58,768 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:19:58,768 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:19:58,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:19:58,769 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:19:58,769 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:19:58,769 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-08 14:19:58,769 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-08 14:19:58,769 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-08 14:19:58,769 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-08 14:19:58,769 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-08 14:19:58,769 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-08 14:19:58,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:19:58,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-08 14:19:58,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:19:58,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:19:58,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-08 14:19:58,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-08 14:19:58,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-08 14:19:58,770 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:19:58,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:19:58,770 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-08 14:19:58,770 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:19:58,771 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:19:58,771 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:19:58,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:19:58,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:19:58,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:19:58,772 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-08 14:19:58,772 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2025-02-08 14:19:59,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:19:59,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:19:59,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:19:59,027 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:19:59,027 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:19:59,028 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Binomial.c [2025-02-08 14:20:00,252 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9a3a9684c/485de4057b81443a84288c9f66c1a990/FLAG2dea89e13 [2025-02-08 14:20:00,476 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:20:00,476 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-numeric/Binomial.c [2025-02-08 14:20:00,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9a3a9684c/485de4057b81443a84288c9f66c1a990/FLAG2dea89e13 [2025-02-08 14:20:00,530 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9a3a9684c/485de4057b81443a84288c9f66c1a990 [2025-02-08 14:20:00,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:20:00,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:20:00,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:20:00,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:20:00,546 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:20:00,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d5e064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00, skipping insertion in model container [2025-02-08 14:20:00,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,557 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:20:00,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:20:00,655 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:20:00,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:20:00,673 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:20:00,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00 WrapperNode [2025-02-08 14:20:00,674 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:20:00,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:20:00,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:20:00,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:20:00,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,693 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-02-08 14:20:00,693 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:20:00,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:20:00,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:20:00,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:20:00,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,704 INFO L175 MemorySlicer]: No memory access in input program. [2025-02-08 14:20:00,705 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,705 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,706 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,709 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,710 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,714 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:20:00,715 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:20:00,715 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:20:00,715 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:20:00,715 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (1/1) ... [2025-02-08 14:20:00,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:00,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:00,746 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) [2025-02-08 14:20:00,750 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 [2025-02-08 14:20:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2025-02-08 14:20:00,767 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2025-02-08 14:20:00,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:20:00,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:20:00,805 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:20:00,806 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:20:00,920 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L42-1: main_#t~post9#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post9#1;havoc main_#t~post9#1; [2025-02-08 14:20:00,921 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L30: havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1;main_#t~ret7#1 := binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;havoc binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1;assume { :end_inline_binomialCoefficient } true; [2025-02-08 14:20:00,922 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L30-6: havoc binomialCoefficient_#t~ret1#1;havoc binomialCoefficient_#t~ret2#1;havoc binomialCoefficient_#t~ret3#1;main_#t~ret8#1 := binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;havoc binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1;assume { :end_inline_binomialCoefficient } true; [2025-02-08 14:20:00,939 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-02-08 14:20:00,939 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:20:00,947 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:20:00,947 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:20:00,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:20:00 BoogieIcfgContainer [2025-02-08 14:20:00,948 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:20:00,948 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-08 14:20:00,948 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-08 14:20:00,952 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-08 14:20:00,952 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-08 14:20:00,952 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.02 02:20:00" (1/3) ... [2025-02-08 14:20:00,953 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@626d43db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.02 02:20:00, skipping insertion in model container [2025-02-08 14:20:00,954 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-08 14:20:00,954 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:00" (2/3) ... [2025-02-08 14:20:00,954 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@626d43db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.02 02:20:00, skipping insertion in model container [2025-02-08 14:20:00,954 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-08 14:20:00,954 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:20:00" (3/3) ... [2025-02-08 14:20:00,955 INFO L363 chiAutomizerObserver]: Analyzing ICFG Binomial.c [2025-02-08 14:20:00,993 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-08 14:20:00,993 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-08 14:20:00,993 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-08 14:20:00,993 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-08 14:20:00,993 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-08 14:20:00,994 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-08 14:20:00,994 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-08 14:20:00,994 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-08 14:20:00,997 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 14:20:01,009 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2025-02-08 14:20:01,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:01,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:01,012 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-08 14:20:01,012 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-08 14:20:01,012 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-08 14:20:01,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-08 14:20:01,013 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2025-02-08 14:20:01,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:01,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:01,014 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-08 14:20:01,014 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-08 14:20:01,019 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret7#1, main_#t~ret8#1, main_#t~post9#1, main_~k~0#1, main_#t~post10#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_#t~nondet4#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !(main_~x~0#1 < 0);havoc main_#t~nondet5#1;main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;" "assume !(main_~y~0#1 < 0);havoc main_#t~nondet6#1;main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0;" [2025-02-08 14:20:01,019 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~n~0#1 <= main_~x~0#1;main_~k~0#1 := 0;" "assume !(main_~k~0#1 <= main_~x~0#1);havoc main_~k~0#1;main_#t~post10#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post10#1;havoc main_#t~post10#1;" [2025-02-08 14:20:01,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash 64509, now seen corresponding path program 1 times [2025-02-08 14:20:01,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:01,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431939378] [2025-02-08 14:20:01,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:01,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:01,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:01,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:01,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:01,074 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:01,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:01,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:01,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:01,090 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:01,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1712, now seen corresponding path program 1 times [2025-02-08 14:20:01,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:01,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614163506] [2025-02-08 14:20:01,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:01,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:01,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:01,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:01,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:01,104 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:01,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:01,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:01,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:01,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:01,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:01,113 INFO L85 PathProgramCache]: Analyzing trace with hash 61993900, now seen corresponding path program 1 times [2025-02-08 14:20:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:01,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916696759] [2025-02-08 14:20:01,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:01,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:01,116 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:20:01,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:20:01,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:01,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:20:01,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916696759] [2025-02-08 14:20:01,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916696759] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:20:01,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:20:01,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 14:20:01,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814557416] [2025-02-08 14:20:01,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:20:01,232 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:01,233 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:01,233 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:01,233 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:01,233 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:01,233 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,233 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:01,233 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:01,234 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration1_Loop [2025-02-08 14:20:01,234 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:01,234 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:01,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,249 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,253 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,294 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:01,295 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:01,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,299 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) [2025-02-08 14:20:01,299 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 [2025-02-08 14:20:01,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:01,301 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:01,316 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:01,316 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0#1=0} Honda state: {ULTIMATE.start_main_~k~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:20:01,322 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 [2025-02-08 14:20:01,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,325 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) [2025-02-08 14:20:01,325 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 [2025-02-08 14:20:01,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:01,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:01,344 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:01,344 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post10#1=0} Honda state: {ULTIMATE.start_main_#t~post10#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:20:01,353 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 [2025-02-08 14:20:01,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,357 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) [2025-02-08 14:20:01,359 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 [2025-02-08 14:20:01,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:01,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:01,379 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 [2025-02-08 14:20:01,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,381 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) [2025-02-08 14:20:01,383 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 [2025-02-08 14:20:01,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:01,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:01,446 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:01,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:01,451 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:01,451 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:01,451 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:01,451 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:01,451 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:01,451 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,451 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:01,451 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:01,451 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration1_Loop [2025-02-08 14:20:01,452 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:01,452 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:01,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,454 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,483 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:01,485 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:01,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,489 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) [2025-02-08 14:20:01,490 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 [2025-02-08 14:20:01,491 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 [2025-02-08 14:20:01,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:01,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:01,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:01,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:01,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:01,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:01,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:01,509 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:01,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:01,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,525 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) [2025-02-08 14:20:01,526 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 [2025-02-08 14:20:01,526 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 [2025-02-08 14:20:01,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:01,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:01,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:01,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:01,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:01,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:01,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:01,542 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:01,548 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 [2025-02-08 14:20:01,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,552 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) [2025-02-08 14:20:01,554 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 [2025-02-08 14:20:01,555 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 [2025-02-08 14:20:01,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:01,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:01,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:01,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:01,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:01,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:01,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:01,571 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:01,578 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2025-02-08 14:20:01,580 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2025-02-08 14:20:01,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,585 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) [2025-02-08 14:20:01,588 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 [2025-02-08 14:20:01,588 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:01,588 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:01,589 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:01,589 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2025-02-08 14:20:01,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-08 14:20:01,598 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:01,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:01,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:01,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:01,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:01,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:20:01,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:01,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:01,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:01,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:01,632 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:20:01,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:01,667 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-08 14:20:01,668 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 25 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:01,705 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 25 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 38 transitions. Complement of second has 7 states. [2025-02-08 14:20:01,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2025-02-08 14:20:01,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-08 14:20:01,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:01,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-08 14:20:01,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:01,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-08 14:20:01,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:01,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2025-02-08 14:20:01,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:01,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 20 states and 28 transitions. [2025-02-08 14:20:01,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2025-02-08 14:20:01,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2025-02-08 14:20:01,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 28 transitions. [2025-02-08 14:20:01,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:01,723 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 28 transitions. [2025-02-08 14:20:01,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 28 transitions. [2025-02-08 14:20:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-08 14:20:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 14:20:01,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2025-02-08 14:20:01,738 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 28 transitions. [2025-02-08 14:20:01,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:20:01,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:20:01,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:20:01,740 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:01,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 14:20:01,758 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2025-02-08 14:20:01,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2025-02-08 14:20:01,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:01,759 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 18 states and 24 transitions. [2025-02-08 14:20:01,759 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2025-02-08 14:20:01,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2025-02-08 14:20:01,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2025-02-08 14:20:01,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-08 14:20:01,760 INFO L218 hiAutomatonCegarLoop]: Abstraction has 18 states and 24 transitions. [2025-02-08 14:20:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2025-02-08 14:20:01,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-02-08 14:20:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-08 14:20:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2025-02-08 14:20:01,762 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 24 transitions. [2025-02-08 14:20:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:20:01,763 INFO L432 stractBuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2025-02-08 14:20:01,763 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-08 14:20:01,763 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2025-02-08 14:20:01,764 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:01,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:01,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:01,764 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:20:01,764 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-08 14:20:01,764 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret7#1, main_#t~ret8#1, main_#t~post9#1, main_~k~0#1, main_#t~post10#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_#t~nondet4#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !(main_~x~0#1 < 0);havoc main_#t~nondet5#1;main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;" "assume !(main_~y~0#1 < 0);havoc main_#t~nondet6#1;main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0;" "assume main_~n~0#1 <= main_~x~0#1;main_~k~0#1 := 0;" "assume main_~k~0#1 <= main_~x~0#1;" "assume !(main_~k~0#1 <= main_~n~0#1);assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~k~0#1, main_~n~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1;" "call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);"< [2025-02-08 14:20:01,764 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n <= 0);" "call #t~ret0 := fact(~n - 1);"< [2025-02-08 14:20:01,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash -553388137, now seen corresponding path program 1 times [2025-02-08 14:20:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:01,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563596332] [2025-02-08 14:20:01,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:01,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:01,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:20:01,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:20:01,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:01,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:20:01,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563596332] [2025-02-08 14:20:01,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563596332] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:20:01,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:20:01,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 14:20:01,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63435165] [2025-02-08 14:20:01,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:20:01,812 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-08 14:20:01,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash 33765, now seen corresponding path program 1 times [2025-02-08 14:20:01,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:01,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141492775] [2025-02-08 14:20:01,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:01,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:01,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:01,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:01,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,818 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:01,819 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:01,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:01,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:01,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:01,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:01,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:01,859 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:01,859 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:01,859 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:01,860 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:01,860 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:01,860 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,860 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:01,860 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:01,860 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration2_Loop [2025-02-08 14:20:01,860 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:01,860 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:01,861 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,867 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,870 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,873 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,897 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:01,897 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:01,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,899 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) [2025-02-08 14:20:01,901 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 [2025-02-08 14:20:01,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:01,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:01,921 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 [2025-02-08 14:20:01,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:01,923 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) [2025-02-08 14:20:01,924 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 [2025-02-08 14:20:01,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:01,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:01,965 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:01,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-08 14:20:01,970 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:01,970 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:01,970 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:01,970 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:01,970 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:01,970 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,970 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:01,970 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:01,970 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration2_Loop [2025-02-08 14:20:01,970 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:01,970 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:01,971 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,978 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:01,999 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:01,999 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:01,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:01,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,002 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) [2025-02-08 14:20:02,003 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 [2025-02-08 14:20:02,004 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:02,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:02,014 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:02,014 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:02,014 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:02,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:02,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:02,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:02,017 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:02,020 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-08 14:20:02,021 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-08 14:20:02,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,033 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) [2025-02-08 14:20:02,034 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 [2025-02-08 14:20:02,035 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:02,035 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:02,035 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:02,035 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~n) = 1*fact_#in~n Supporting invariants [] [2025-02-08 14:20:02,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-08 14:20:02,041 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:02,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:02,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:20:02,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:20:02,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:02,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:20:02,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:02,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:02,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:02,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:02,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 14:20:02,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:02,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-08 14:20:02,116 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 [2025-02-08 14:20:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:02,133 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-08 14:20:02,134 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 7 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:02,177 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 7. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 42 states and 54 transitions. Complement of second has 17 states. [2025-02-08 14:20:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2025-02-08 14:20:02,178 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-08 14:20:02,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:02,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 3 letters. [2025-02-08 14:20:02,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:02,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 6 letters. [2025-02-08 14:20:02,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:02,179 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 54 transitions. [2025-02-08 14:20:02,181 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2025-02-08 14:20:02,182 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 48 transitions. [2025-02-08 14:20:02,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2025-02-08 14:20:02,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2025-02-08 14:20:02,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 48 transitions. [2025-02-08 14:20:02,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:02,183 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 48 transitions. [2025-02-08 14:20:02,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 48 transitions. [2025-02-08 14:20:02,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2025-02-08 14:20:02,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 6 states have call predecessors, (9), 7 states have call successors, (9) [2025-02-08 14:20:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2025-02-08 14:20:02,185 INFO L240 hiAutomatonCegarLoop]: Abstraction has 34 states and 44 transitions. [2025-02-08 14:20:02,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:20:02,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 14:20:02,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 14:20:02,186 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:02,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 14:20:02,197 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2025-02-08 14:20:02,197 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2025-02-08 14:20:02,197 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:02,197 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 18 transitions. [2025-02-08 14:20:02,197 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2025-02-08 14:20:02,197 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2025-02-08 14:20:02,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 18 transitions. [2025-02-08 14:20:02,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-08 14:20:02,198 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 18 transitions. [2025-02-08 14:20:02,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 18 transitions. [2025-02-08 14:20:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-02-08 14:20:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 14:20:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2025-02-08 14:20:02,199 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 18 transitions. [2025-02-08 14:20:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 14:20:02,200 INFO L432 stractBuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2025-02-08 14:20:02,200 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-08 14:20:02,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2025-02-08 14:20:02,200 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:02,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:02,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:02,200 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:20:02,200 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-08 14:20:02,201 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret7#1, main_#t~ret8#1, main_#t~post9#1, main_~k~0#1, main_#t~post10#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_#t~nondet4#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !(main_~x~0#1 < 0);havoc main_#t~nondet5#1;main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;" "assume !(main_~y~0#1 < 0);havoc main_#t~nondet6#1;main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0;" "assume main_~n~0#1 <= main_~x~0#1;main_~k~0#1 := 0;" "assume main_~k~0#1 <= main_~x~0#1;" "assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1;" "call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);"< [2025-02-08 14:20:02,201 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n <= 0);" "call #t~ret0 := fact(~n - 1);"< [2025-02-08 14:20:02,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:02,201 INFO L85 PathProgramCache]: Analyzing trace with hash -553388360, now seen corresponding path program 1 times [2025-02-08 14:20:02,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:02,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140131968] [2025-02-08 14:20:02,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:02,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:02,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:20:02,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:20:02,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:02,206 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:02,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:20:02,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:20:02,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:02,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:02,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash 33765, now seen corresponding path program 2 times [2025-02-08 14:20:02,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:02,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755753051] [2025-02-08 14:20:02,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:20:02,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:02,215 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:02,215 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:02,215 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:20:02,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:02,216 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:02,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:02,217 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:02,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:02,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:02,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:02,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1908146738, now seen corresponding path program 1 times [2025-02-08 14:20:02,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:02,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279121362] [2025-02-08 14:20:02,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:02,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:02,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 14:20:02,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 14:20:02,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:02,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:20:02,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279121362] [2025-02-08 14:20:02,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279121362] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:20:02,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:20:02,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 14:20:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632242101] [2025-02-08 14:20:02,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:20:02,295 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:02,295 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:02,295 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:02,295 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:02,295 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:02,295 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,295 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:02,295 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:02,295 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration3_Loop [2025-02-08 14:20:02,296 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:02,296 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:02,296 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,298 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,302 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,304 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,321 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:02,321 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:02,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,323 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) [2025-02-08 14:20:02,324 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 [2025-02-08 14:20:02,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:02,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:02,335 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:02,335 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_~n=0} Honda state: {fact_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:20:02,341 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 [2025-02-08 14:20:02,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,343 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) [2025-02-08 14:20:02,344 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 [2025-02-08 14:20:02,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:02,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:02,360 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 [2025-02-08 14:20:02,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,363 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:02,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-08 14:20:02,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:02,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:02,405 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:02,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:02,409 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:02,409 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:02,409 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:02,409 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:02,409 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:02,409 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,409 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:02,409 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:02,409 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration3_Loop [2025-02-08 14:20:02,409 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:02,409 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:02,410 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,417 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,419 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,425 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,448 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:02,448 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:02,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,450 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) [2025-02-08 14:20:02,451 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 [2025-02-08 14:20:02,455 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 [2025-02-08 14:20:02,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:02,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:02,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:02,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:02,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:02,466 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:02,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:02,467 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:02,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-08 14:20:02,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,474 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) [2025-02-08 14:20:02,476 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 [2025-02-08 14:20:02,478 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 [2025-02-08 14:20:02,488 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:02,488 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:02,488 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:02,488 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:02,488 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:02,490 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:02,490 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:02,491 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:02,496 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 [2025-02-08 14:20:02,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,502 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) [2025-02-08 14:20:02,504 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 [2025-02-08 14:20:02,505 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 [2025-02-08 14:20:02,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:02,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:02,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:02,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:02,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:02,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:02,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:02,518 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:02,521 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-08 14:20:02,521 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-08 14:20:02,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,523 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) [2025-02-08 14:20:02,524 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 [2025-02-08 14:20:02,525 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:02,525 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:02,525 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:02,525 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~n) = 1*fact_#in~n Supporting invariants [] [2025-02-08 14:20:02,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:02,531 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:02,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:02,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 14:20:02,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 14:20:02,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:02,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:20:02,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:02,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:02,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:02,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:02,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 14:20:02,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:02,590 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2025-02-08 14:20:02,590 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 4 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:02,624 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 4. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 41 transitions. Complement of second has 16 states. [2025-02-08 14:20:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2025-02-08 14:20:02,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-08 14:20:02,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:02,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2025-02-08 14:20:02,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:02,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 7 letters. Loop has 6 letters. [2025-02-08 14:20:02,625 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:02,625 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2025-02-08 14:20:02,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:02,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 35 transitions. [2025-02-08 14:20:02,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2025-02-08 14:20:02,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2025-02-08 14:20:02,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 35 transitions. [2025-02-08 14:20:02,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:02,628 INFO L218 hiAutomatonCegarLoop]: Abstraction has 27 states and 35 transitions. [2025-02-08 14:20:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 35 transitions. [2025-02-08 14:20:02,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2025-02-08 14:20:02,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-08 14:20:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2025-02-08 14:20:02,629 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2025-02-08 14:20:02,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:20:02,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:20:02,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:20:02,630 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 14:20:02,652 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2025-02-08 14:20:02,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 22 transitions. [2025-02-08 14:20:02,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:02,652 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 19 states and 21 transitions. [2025-02-08 14:20:02,653 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2025-02-08 14:20:02,653 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2025-02-08 14:20:02,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2025-02-08 14:20:02,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-08 14:20:02,653 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2025-02-08 14:20:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2025-02-08 14:20:02,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-08 14:20:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 14:20:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2025-02-08 14:20:02,654 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2025-02-08 14:20:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:20:02,655 INFO L432 stractBuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2025-02-08 14:20:02,655 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-08 14:20:02,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 21 transitions. [2025-02-08 14:20:02,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:02,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:02,655 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:02,655 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:20:02,655 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-08 14:20:02,656 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret7#1, main_#t~ret8#1, main_#t~post9#1, main_~k~0#1, main_#t~post10#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_#t~nondet4#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !(main_~x~0#1 < 0);havoc main_#t~nondet5#1;main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;" "assume !(main_~y~0#1 < 0);havoc main_#t~nondet6#1;main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0;" "assume main_~n~0#1 <= main_~x~0#1;main_~k~0#1 := 0;" "assume main_~k~0#1 <= main_~x~0#1;" "assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1;" "call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);"< "~n := #in~n;" "assume ~n <= 0;#res := 1;" "assume true;" >"#44#return;" "call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);"< [2025-02-08 14:20:02,656 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n <= 0);" "call #t~ret0 := fact(~n - 1);"< [2025-02-08 14:20:02,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash 221901454, now seen corresponding path program 1 times [2025-02-08 14:20:02,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217622820] [2025-02-08 14:20:02,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:02,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:02,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:20:02,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:20:02,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:02,661 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:02,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:20:02,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:20:02,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:02,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:02,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:02,667 INFO L85 PathProgramCache]: Analyzing trace with hash 33765, now seen corresponding path program 3 times [2025-02-08 14:20:02,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:02,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655495898] [2025-02-08 14:20:02,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:20:02,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:02,669 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:02,669 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:02,669 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:20:02,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:02,670 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:02,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:02,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:02,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:02,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:02,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash 711551544, now seen corresponding path program 1 times [2025-02-08 14:20:02,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:02,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12288312] [2025-02-08 14:20:02,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:02,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 14:20:02,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 14:20:02,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:02,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:20:02,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12288312] [2025-02-08 14:20:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12288312] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:20:02,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:20:02,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 14:20:02,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575770730] [2025-02-08 14:20:02,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:20:02,745 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:02,745 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:02,745 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:02,745 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:02,745 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:02,745 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,745 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:02,745 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:02,745 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration4_Loop [2025-02-08 14:20:02,745 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:02,745 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:02,745 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,750 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,751 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,753 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,769 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:02,769 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:02,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,771 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) [2025-02-08 14:20:02,774 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 [2025-02-08 14:20:02,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:02,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:02,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:02,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,794 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) [2025-02-08 14:20:02,794 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 [2025-02-08 14:20:02,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:02,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:02,834 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:02,838 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 [2025-02-08 14:20:02,839 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:02,839 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:02,839 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:02,839 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:02,839 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:02,839 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,839 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:02,839 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:02,839 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration4_Loop [2025-02-08 14:20:02,839 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:02,839 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:02,840 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,845 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,846 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,848 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:02,881 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:02,881 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:02,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,885 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) [2025-02-08 14:20:02,885 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 [2025-02-08 14:20:02,886 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 [2025-02-08 14:20:02,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:02,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:02,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:02,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:02,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:02,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:02,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:02,901 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:02,902 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-02-08 14:20:02,902 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-08 14:20:02,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:02,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:02,904 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) [2025-02-08 14:20:02,906 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 [2025-02-08 14:20:02,907 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:02,907 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:02,907 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:02,907 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~n) = 1*fact_#in~n Supporting invariants [] [2025-02-08 14:20:02,913 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 [2025-02-08 14:20:02,913 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:02,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:02,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 14:20:02,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 14:20:02,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:02,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:02,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:20:02,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:03,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:03,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:03,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:03,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:03,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 14:20:03,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:03,040 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2025-02-08 14:20:03,040 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 21 transitions. cyclomatic complexity: 3 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 14:20:03,107 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 21 transitions. cyclomatic complexity: 3. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 37 states and 44 transitions. Complement of second has 17 states. [2025-02-08 14:20:03,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:03,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 14:20:03,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2025-02-08 14:20:03,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 12 letters. Loop has 3 letters. [2025-02-08 14:20:03,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:03,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 15 letters. Loop has 3 letters. [2025-02-08 14:20:03,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:03,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 12 letters. Loop has 6 letters. [2025-02-08 14:20:03,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:03,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 44 transitions. [2025-02-08 14:20:03,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:03,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 31 states and 37 transitions. [2025-02-08 14:20:03,110 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2025-02-08 14:20:03,110 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2025-02-08 14:20:03,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2025-02-08 14:20:03,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:03,110 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 37 transitions. [2025-02-08 14:20:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2025-02-08 14:20:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2025-02-08 14:20:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-08 14:20:03,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2025-02-08 14:20:03,112 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29 states and 33 transitions. [2025-02-08 14:20:03,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:20:03,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 14:20:03,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 14:20:03,113 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 2 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) [2025-02-08 14:20:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 14:20:03,140 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2025-02-08 14:20:03,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 23 transitions. [2025-02-08 14:20:03,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:03,141 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 20 states and 20 transitions. [2025-02-08 14:20:03,141 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2025-02-08 14:20:03,141 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2025-02-08 14:20:03,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 20 transitions. [2025-02-08 14:20:03,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-08 14:20:03,141 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 20 transitions. [2025-02-08 14:20:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 20 transitions. [2025-02-08 14:20:03,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-08 14:20:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 14:20:03,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2025-02-08 14:20:03,142 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 20 transitions. [2025-02-08 14:20:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 14:20:03,143 INFO L432 stractBuchiCegarLoop]: Abstraction has 20 states and 20 transitions. [2025-02-08 14:20:03,143 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-08 14:20:03,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 20 transitions. [2025-02-08 14:20:03,143 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:03,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:03,143 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:03,144 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 14:20:03,144 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-08 14:20:03,144 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~ret7#1, main_#t~ret8#1, main_#t~post9#1, main_~k~0#1, main_#t~post10#1, main_~n~0#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_#t~nondet4#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "assume !(main_~x~0#1 < 0);havoc main_#t~nondet5#1;main_~y~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;" "assume !(main_~y~0#1 < 0);havoc main_#t~nondet6#1;main_~z~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;main_~n~0#1 := 0;" "assume main_~n~0#1 <= main_~x~0#1;main_~k~0#1 := 0;" "assume main_~k~0#1 <= main_~x~0#1;" "assume main_~k~0#1 <= main_~n~0#1;assume { :begin_inline_binomialCoefficient } true;binomialCoefficient_#in~n#1, binomialCoefficient_#in~k#1 := main_~n~0#1, main_~k~0#1;havoc binomialCoefficient_#res#1;havoc binomialCoefficient_#t~ret1#1, binomialCoefficient_#t~ret2#1, binomialCoefficient_#t~ret3#1, binomialCoefficient_~n#1, binomialCoefficient_~k#1;binomialCoefficient_~n#1 := binomialCoefficient_#in~n#1;binomialCoefficient_~k#1 := binomialCoefficient_#in~k#1;" "call binomialCoefficient_#t~ret1#1 := fact(binomialCoefficient_~n#1);"< "~n := #in~n;" "assume ~n <= 0;#res := 1;" "assume true;" >"#44#return;" "call binomialCoefficient_#t~ret2#1 := fact(binomialCoefficient_~k#1);"< "~n := #in~n;" "assume ~n <= 0;#res := 1;" "assume true;" >"#42#return;" "call binomialCoefficient_#t~ret3#1 := fact(binomialCoefficient_~n#1 - binomialCoefficient_~k#1);"< [2025-02-08 14:20:03,144 INFO L754 eck$LassoCheckResult]: Loop: "~n := #in~n;" "assume !(~n <= 0);" "call #t~ret0 := fact(~n - 1);"< [2025-02-08 14:20:03,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:03,144 INFO L85 PathProgramCache]: Analyzing trace with hash 901114936, now seen corresponding path program 1 times [2025-02-08 14:20:03,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:03,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710121489] [2025-02-08 14:20:03,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:03,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:20:03,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:20:03,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:03,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:03,151 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:03,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:20:03,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:20:03,158 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:03,158 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:03,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:03,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash 33765, now seen corresponding path program 4 times [2025-02-08 14:20:03,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:03,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911501104] [2025-02-08 14:20:03,160 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 14:20:03,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:03,164 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 3 statements into 2 equivalence classes. [2025-02-08 14:20:03,165 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:03,165 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 14:20:03,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:03,165 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:03,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:03,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:03,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:03,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:03,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:03,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1569462350, now seen corresponding path program 1 times [2025-02-08 14:20:03,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:03,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955363922] [2025-02-08 14:20:03,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:03,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:03,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 14:20:03,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 14:20:03,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:03,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:03,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-08 14:20:03,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2025-02-08 14:20:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 14:20:03,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:20:03,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955363922] [2025-02-08 14:20:03,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955363922] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:20:03,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:20:03,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-08 14:20:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128433176] [2025-02-08 14:20:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:20:03,315 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:03,315 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:03,315 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:03,315 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:03,315 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:03,315 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:03,315 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:03,315 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:03,315 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration5_Loop [2025-02-08 14:20:03,315 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:03,315 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:03,315 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:03,318 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:03,323 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:03,325 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:03,343 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:03,343 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:03,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:03,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:03,347 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) [2025-02-08 14:20:03,351 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 [2025-02-08 14:20:03,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:03,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:03,365 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:03,365 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fact_#res=0} Honda state: {fact_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:20:03,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:03,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:03,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:03,374 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) [2025-02-08 14:20:03,375 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 [2025-02-08 14:20:03,380 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:03,380 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:03,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:03,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:03,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:03,401 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) [2025-02-08 14:20:03,406 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 [2025-02-08 14:20:03,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:03,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:03,447 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:03,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:03,456 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:03,456 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:03,456 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:03,456 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:03,456 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:03,456 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:03,456 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:03,456 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:03,456 INFO L132 ssoRankerPreferences]: Filename of dumped script: Binomial.c_Iteration5_Loop [2025-02-08 14:20:03,456 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:03,456 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:03,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:03,459 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:03,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:03,464 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:03,483 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:03,484 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:03,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:03,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:03,489 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) [2025-02-08 14:20:03,490 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 [2025-02-08 14:20:03,491 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 [2025-02-08 14:20:03,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:03,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:03,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:03,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:03,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:03,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:03,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:03,505 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:03,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:03,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:03,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:03,515 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) [2025-02-08 14:20:03,517 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 [2025-02-08 14:20:03,518 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 [2025-02-08 14:20:03,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:03,528 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:03,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:03,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:03,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:03,529 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:03,529 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:03,530 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:03,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-02-08 14:20:03,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:03,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:03,539 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) [2025-02-08 14:20:03,540 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 [2025-02-08 14:20:03,541 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 [2025-02-08 14:20:03,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:03,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:03,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:03,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:03,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:03,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:03,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:03,559 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:03,560 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-02-08 14:20:03,560 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-08 14:20:03,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:03,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:03,566 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) [2025-02-08 14:20:03,567 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 [2025-02-08 14:20:03,567 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:03,568 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:03,568 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:03,568 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fact_#in~n) = 1*fact_#in~n Supporting invariants [] [2025-02-08 14:20:03,574 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 [2025-02-08 14:20:03,574 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:03,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:03,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 14:20:03,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 14:20:03,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:03,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:03,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 14:20:03,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:03,669 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:03,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:03,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:03,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:03,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 14:20:03,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:03,694 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2025-02-08 14:20:03,694 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 20 transitions. cyclomatic complexity: 1 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 14:20:03,761 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 20 transitions. cyclomatic complexity: 1. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Result 27 states and 27 transitions. Complement of second has 12 states. [2025-02-08 14:20:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 14:20:03,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2025-02-08 14:20:03,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 17 letters. Loop has 3 letters. [2025-02-08 14:20:03,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:03,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 20 letters. Loop has 3 letters. [2025-02-08 14:20:03,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:03,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 17 letters. Loop has 6 letters. [2025-02-08 14:20:03,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:03,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 27 transitions. [2025-02-08 14:20:03,763 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-08 14:20:03,763 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-08 14:20:03,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-08 14:20:03,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-08 14:20:03,764 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:20:03,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 14:20:03,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-08 14:20:03,764 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-08 14:20:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 14:20:03,764 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-08 14:20:03,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-08 14:20:03,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-08 14:20:03,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-08 14:20:03,764 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 14:20:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-08 14:20:03,765 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 14:20:03,765 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-08 14:20:03,765 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-08 14:20:03,765 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-08 14:20:03,765 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-08 14:20:03,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.02 02:20:03 BoogieIcfgContainer [2025-02-08 14:20:03,770 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-08 14:20:03,771 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:20:03,771 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:20:03,771 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:20:03,771 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:20:00" (3/4) ... [2025-02-08 14:20:03,772 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 14:20:03,773 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:20:03,773 INFO L158 Benchmark]: Toolchain (without parser) took 3236.03ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 91.3MB in the end (delta: 31.7MB). Peak memory consumption was 27.9MB. Max. memory is 16.1GB. [2025-02-08 14:20:03,773 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 209.7MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:20:03,774 INFO L158 Benchmark]: CACSL2BoogieTranslator took 135.19ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 112.7MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:20:03,774 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.69ms. Allocated memory is still 167.8MB. Free memory was 112.7MB in the beginning and 111.8MB in the end (delta: 865.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:20:03,774 INFO L158 Benchmark]: Boogie Preprocessor took 20.71ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 110.6MB in the end (delta: 826.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:20:03,774 INFO L158 Benchmark]: IcfgBuilder took 232.99ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 98.5MB in the end (delta: 12.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 14:20:03,774 INFO L158 Benchmark]: BuchiAutomizer took 2822.08ms. Allocated memory is still 167.8MB. Free memory was 98.5MB in the beginning and 92.2MB in the end (delta: 6.2MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. [2025-02-08 14:20:03,774 INFO L158 Benchmark]: Witness Printer took 2.22ms. Allocated memory is still 167.8MB. Free memory was 92.2MB in the beginning and 91.3MB in the end (delta: 926.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:20:03,775 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 209.7MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 135.19ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 112.7MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.69ms. Allocated memory is still 167.8MB. Free memory was 112.7MB in the beginning and 111.8MB in the end (delta: 865.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.71ms. Allocated memory is still 167.8MB. Free memory was 111.4MB in the beginning and 110.6MB in the end (delta: 826.7kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 232.99ms. Allocated memory is still 167.8MB. Free memory was 110.6MB in the beginning and 98.5MB in the end (delta: 12.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 2822.08ms. Allocated memory is still 167.8MB. Free memory was 98.5MB in the beginning and 92.2MB in the end (delta: 6.2MB). Peak memory consumption was 2.7MB. Max. memory is 16.1GB. * Witness Printer took 2.22ms. Allocated memory is still 167.8MB. Free memory was 92.2MB in the beginning and 91.3MB in the end (delta: 926.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function ((long) -1 * n) and consists of 4 locations. One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function \old(n) and consists of 6 locations. One deterministic module has affine ranking function \old(n) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 1.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 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 [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 83 mSDsluCounter, 295 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 169 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 148 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 126 mSDtfsCounter, 148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT4 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf94 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-08 14:20:03,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:03,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE