./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Pure2Phase-1.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-crafted/Pure2Phase-1.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 2a633be8572429ac13238ea7bd46ff22a6a657dc142a1db237c08b8a68a6d4e8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 14:18:29,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:18:29,751 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-02-08 14:18:29,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:18:29,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:18:29,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-02-08 14:18:29,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:18:29,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:18:29,779 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:18:29,779 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:18:29,779 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:18:29,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:18:29,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:18:29,780 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:18:29,780 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-08 14:18:29,780 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-08 14:18:29,780 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-08 14:18:29,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:18:29,781 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-08 14:18:29,782 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:18:29,782 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:18:29,782 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:18:29,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:18:29,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:18:29,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:18:29,782 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-08 14:18:29,782 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 -> 2a633be8572429ac13238ea7bd46ff22a6a657dc142a1db237c08b8a68a6d4e8 [2025-02-08 14:18:29,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:18:29,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:18:29,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:18:29,999 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:18:29,999 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:18:30,000 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2025-02-08 14:18:31,129 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/054046059/3d6c23fa512b4b3b82be5905a335c6d6/FLAGa57493618 [2025-02-08 14:18:31,322 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:18:31,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2025-02-08 14:18:31,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/054046059/3d6c23fa512b4b3b82be5905a335c6d6/FLAGa57493618 [2025-02-08 14:18:31,695 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/054046059/3d6c23fa512b4b3b82be5905a335c6d6 [2025-02-08 14:18:31,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:18:31,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:18:31,699 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:18:31,699 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:18:31,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:18:31,704 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cb3b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31, skipping insertion in model container [2025-02-08 14:18:31,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,715 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:18:31,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:18:31,810 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:18:31,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:18:31,828 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:18:31,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31 WrapperNode [2025-02-08 14:18:31,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:18:31,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:18:31,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:18:31,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:18:31,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,847 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2025-02-08 14:18:31,847 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:18:31,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:18:31,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:18:31,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:18:31,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,857 INFO L175 MemorySlicer]: No memory access in input program. [2025-02-08 14:18:31,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,859 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,860 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,861 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,862 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:18:31,863 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:18:31,864 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:18:31,864 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:18:31,864 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (1/1) ... [2025-02-08 14:18:31,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:31,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:31,891 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 14:18:31,897 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 14:18:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:18:31,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:18:31,955 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:18:31,956 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:18:32,018 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-02-08 14:18:32,019 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:18:32,024 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:18:32,024 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:18:32,025 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:18:32 BoogieIcfgContainer [2025-02-08 14:18:32,025 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:18:32,025 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-08 14:18:32,025 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-08 14:18:32,029 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-08 14:18:32,030 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-08 14:18:32,030 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.02 02:18:31" (1/3) ... [2025-02-08 14:18:32,031 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5aa4a152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.02 02:18:32, skipping insertion in model container [2025-02-08 14:18:32,031 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-08 14:18:32,031 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:18:31" (2/3) ... [2025-02-08 14:18:32,031 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5aa4a152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.02 02:18:32, skipping insertion in model container [2025-02-08 14:18:32,031 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-08 14:18:32,031 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:18:32" (3/3) ... [2025-02-08 14:18:32,032 INFO L363 chiAutomizerObserver]: Analyzing ICFG Pure2Phase-1.c [2025-02-08 14:18:32,062 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-08 14:18:32,062 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-08 14:18:32,062 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-08 14:18:32,062 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-08 14:18:32,062 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-08 14:18:32,062 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-08 14:18:32,062 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-08 14:18:32,062 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-08 14:18:32,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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 14:18:32,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:18:32,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:18:32,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:18:32,077 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-08 14:18:32,077 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-08 14:18:32,078 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-08 14:18:32,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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 14:18:32,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:18:32,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:18:32,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:18:32,079 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-08 14:18:32,079 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-08 14:18:32,083 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~y~0#1, main_~z~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823);" "assume !!(main_~z~0#1 <= 1073741823);" [2025-02-08 14:18:32,083 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume !(main_~y~0#1 >= 0);main_~z~0#1 := main_~z~0#1 - 1;" [2025-02-08 14:18:32,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:32,086 INFO L85 PathProgramCache]: Analyzing trace with hash 42665, now seen corresponding path program 1 times [2025-02-08 14:18:32,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:32,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733393869] [2025-02-08 14:18:32,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:18:32,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:32,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:18:32,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:18:32,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,137 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:32,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:18:32,139 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:18:32,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:32,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:32,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1152, now seen corresponding path program 1 times [2025-02-08 14:18:32,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:32,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029205737] [2025-02-08 14:18:32,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:18:32,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:32,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:32,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:32,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,157 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:32,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:32,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:32,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,160 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:32,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash 41001256, now seen corresponding path program 1 times [2025-02-08 14:18:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:32,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964416893] [2025-02-08 14:18:32,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:18:32,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:32,166 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:18:32,171 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:18:32,172 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,173 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:32,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:18:32,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:18:32,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:32,268 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:18:32,268 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:18:32,269 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:18:32,269 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:18:32,269 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:18:32,269 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,269 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:18:32,270 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:18:32,270 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2025-02-08 14:18:32,270 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:18:32,270 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:18:32,281 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,297 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,302 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,305 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,383 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:18:32,384 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:18:32,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,387 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 14:18:32,390 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 14:18:32,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:32,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:32,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:32,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,411 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 14:18:32,413 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 14:18:32,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:18:32,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:32,438 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:18:32,442 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 14:18:32,442 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:18:32,442 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:18:32,442 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:18:32,442 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:18:32,442 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:18:32,443 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,443 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:18:32,443 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:18:32,443 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2025-02-08 14:18:32,443 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:18:32,443 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:18:32,446 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,453 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,461 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,507 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:18:32,509 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:18:32,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,512 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 14:18:32,513 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 14:18:32,515 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 14:18:32,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:32,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:18:32,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:32,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:32,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:32,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:18:32,531 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:18:32,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:18:32,538 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-08 14:18:32,540 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-08 14:18:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,544 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 14:18:32,547 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 14:18:32,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:18:32,548 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:18:32,548 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:18:32,549 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 2*ULTIMATE.start_main_~z~0#1 + 1 Supporting invariants [] [2025-02-08 14:18:32,555 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 14:18:32,560 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:18:32,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:32,598 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:18:32,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:18:32,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:32,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:18:32,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:32,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:32,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:32,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:32,616 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:18:32,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:32,635 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 14:18:32,656 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 14:18:32,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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) 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 14:18:32,694 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 states have internal predecessors, (12), 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). 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 15 states and 21 transitions. Complement of second has 5 states. [2025-02-08 14:18:32,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-08 14:18:32,699 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 14:18:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2025-02-08 14:18:32,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-08 14:18:32,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:32,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2025-02-08 14:18:32,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:32,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 4 letters. [2025-02-08 14:18:32,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:32,708 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 21 transitions. [2025-02-08 14:18:32,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:18:32,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 10 states and 13 transitions. [2025-02-08 14:18:32,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2025-02-08 14:18:32,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2025-02-08 14:18:32,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2025-02-08 14:18:32,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:18:32,713 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2025-02-08 14:18:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2025-02-08 14:18:32,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2025-02-08 14:18:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 14:18:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2025-02-08 14:18:32,731 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2025-02-08 14:18:32,731 INFO L432 stractBuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2025-02-08 14:18:32,731 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-08 14:18:32,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2025-02-08 14:18:32,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:18:32,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:18:32,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:18:32,731 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2025-02-08 14:18:32,731 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-08 14:18:32,732 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~y~0#1, main_~z~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823);" "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" [2025-02-08 14:18:32,732 INFO L754 eck$LassoCheckResult]: Loop: "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" [2025-02-08 14:18:32,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash 41001255, now seen corresponding path program 1 times [2025-02-08 14:18:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:32,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466633843] [2025-02-08 14:18:32,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:18:32,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:32,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:18:32,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:18:32,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,742 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:32,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:18:32,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:18:32,745 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,745 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:32,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash 32864, now seen corresponding path program 1 times [2025-02-08 14:18:32,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:32,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958688022] [2025-02-08 14:18:32,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:18:32,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:32,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:18:32,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:18:32,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,750 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:32,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:18:32,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:18:32,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:32,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:32,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1697678714, now seen corresponding path program 1 times [2025-02-08 14:18:32,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:32,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133904716] [2025-02-08 14:18:32,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:18:32,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:32,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:18:32,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:18:32,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,759 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:32,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:18:32,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:18:32,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:32,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:32,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:32,791 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:18:32,791 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:18:32,791 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:18:32,791 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:18:32,791 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:18:32,791 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,791 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:18:32,791 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:18:32,791 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2025-02-08 14:18:32,791 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:18:32,791 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:18:32,792 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,796 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,800 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,802 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:32,852 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:18:32,852 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:18:32,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,855 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 14:18:32,856 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 14:18:32,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:32,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:32,878 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:18:32,879 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:18:32,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-08 14:18:32,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,887 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 14:18:32,888 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 14:18:32,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:32,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:32,909 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:18:32,909 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:18:32,915 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 14:18:32,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,918 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 14:18:32,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:32,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:32,931 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 14:18:32,939 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 14:18:32,941 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:18:32,941 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:18:32,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:32,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,948 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 14:18:32,949 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 14:18:32,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:32,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:32,961 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:18:32,961 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0#1=0} Honda state: {ULTIMATE.start_main_~z~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:18:32,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-02-08 14:18:32,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,969 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 14:18:32,969 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 14:18:32,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:32,974 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:32,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-08 14:18:32,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:32,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:32,992 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 14:18:32,993 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 14:18:32,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:18:32,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:33,036 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:18:33,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:33,040 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:18:33,040 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:18:33,040 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:18:33,040 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:18:33,040 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:18:33,040 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,040 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:18:33,040 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:18:33,040 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2025-02-08 14:18:33,040 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:18:33,040 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:18:33,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,048 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,050 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,052 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,056 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,094 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:18:33,094 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:18:33,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,096 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 14:18:33,097 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 14:18:33,098 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:18:33,109 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:33,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:33,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:33,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:33,113 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-08 14:18:33,113 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-08 14:18:33,117 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:18:33,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:33,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,124 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 14:18:33,127 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 14:18:33,127 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 14:18:33,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:33,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:33,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:33,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:33,141 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-08 14:18:33,141 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-08 14:18:33,144 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:18:33,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:33,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,152 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 14:18:33,153 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 14:18:33,154 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 14:18:33,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:33,164 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:18:33,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:33,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:33,165 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:33,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:18:33,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:18:33,166 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:18:33,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:33,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,174 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 14:18:33,175 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 14:18:33,176 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 14:18:33,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:33,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:18:33,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:33,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:33,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:33,187 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:18:33,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:18:33,188 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:18:33,193 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 14:18:33,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,195 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 14:18:33,196 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 14:18:33,197 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 14:18:33,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:33,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:18:33,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:33,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:33,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:33,209 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:18:33,209 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:18:33,211 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:18:33,213 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-02-08 14:18:33,213 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-08 14:18:33,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,215 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 14:18:33,215 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 14:18:33,216 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:18:33,216 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:18:33,216 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:18:33,216 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2025-02-08 14:18:33,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-08 14:18:33,222 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:18:33,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:33,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:18:33,243 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:18:33,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:33,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:18:33,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:33,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:18:33,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:18:33,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:33,253 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:18:33,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:33,280 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 14:18:33,282 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 14:18:33,282 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 14:18:33,300 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 15 states and 20 transitions. Complement of second has 6 states. [2025-02-08 14:18:33,301 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 14:18:33,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 14:18:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2025-02-08 14:18:33,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-08 14:18:33,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:33,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2025-02-08 14:18:33,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:33,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 6 letters. [2025-02-08 14:18:33,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:33,302 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2025-02-08 14:18:33,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-02-08 14:18:33,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 15 states and 20 transitions. [2025-02-08 14:18:33,303 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-02-08 14:18:33,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2025-02-08 14:18:33,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 20 transitions. [2025-02-08 14:18:33,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:18:33,303 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 20 transitions. [2025-02-08 14:18:33,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 20 transitions. [2025-02-08 14:18:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2025-02-08 14:18:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 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 14:18:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2025-02-08 14:18:33,304 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2025-02-08 14:18:33,304 INFO L432 stractBuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2025-02-08 14:18:33,304 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-08 14:18:33,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2025-02-08 14:18:33,304 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-02-08 14:18:33,304 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:18:33,304 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:18:33,306 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-08 14:18:33,306 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-08 14:18:33,306 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~y~0#1, main_~z~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823);" "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume !!(main_~z~0#1 <= 1073741823);" [2025-02-08 14:18:33,306 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume !(main_~y~0#1 >= 0);main_~z~0#1 := main_~z~0#1 - 1;" [2025-02-08 14:18:33,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:33,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1271038908, now seen corresponding path program 2 times [2025-02-08 14:18:33,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:33,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501592545] [2025-02-08 14:18:33,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:18:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:33,312 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:18:33,314 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:18:33,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:18:33,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,314 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:33,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:18:33,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:18:33,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:33,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1152, now seen corresponding path program 2 times [2025-02-08 14:18:33,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:33,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272039288] [2025-02-08 14:18:33,319 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:18:33,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:33,320 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:33,325 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:33,326 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:18:33,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,326 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:33,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:33,329 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:33,329 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,329 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:33,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:33,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1697678715, now seen corresponding path program 1 times [2025-02-08 14:18:33,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:33,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921833436] [2025-02-08 14:18:33,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:18:33,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:33,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:18:33,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:18:33,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,339 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:33,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:18:33,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:18:33,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:33,375 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:18:33,375 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:18:33,375 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:18:33,376 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:18:33,376 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:18:33,376 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,376 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:18:33,376 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:18:33,376 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2025-02-08 14:18:33,376 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:18:33,376 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:18:33,377 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,380 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,384 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,388 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,420 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:18:33,420 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:18:33,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,422 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 14:18:33,425 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 14:18:33,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:33,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:33,443 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:18:33,443 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:18:33,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:33,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,452 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 14:18:33,454 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 14:18:33,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:33,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:33,472 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 14:18:33,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,474 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 14:18:33,475 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 14:18:33,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:18:33,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:33,502 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:18:33,502 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-8} Honda state: {ULTIMATE.start_main_~y~0#1=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=-1}, {ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=0}] Lambdas: [1, 4, 2] Nus: [0, 1] [2025-02-08 14:18:33,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:33,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,510 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 14:18:33,512 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 14:18:33,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:33,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:33,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2025-02-08 14:18:33,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,531 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 14:18:33,533 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 14:18:33,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:18:33,534 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:33,555 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:18:33,558 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 14:18:33,558 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:18:33,558 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:18:33,558 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:18:33,558 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:18:33,558 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:18:33,558 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,558 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:18:33,558 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:18:33,558 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2025-02-08 14:18:33,558 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:18:33,558 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:18:33,559 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,566 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,607 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:18:33,607 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:18:33,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,611 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 14:18:33,612 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 14:18:33,613 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 14:18:33,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:33,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:18:33,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:33,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:33,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:33,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:18:33,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:18:33,626 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:18:33,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:33,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,634 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 14:18:33,636 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 14:18:33,637 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 14:18:33,647 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:33,647 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:33,647 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:33,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:33,648 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-08 14:18:33,648 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-08 14:18:33,651 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:18:33,657 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 14:18:33,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,659 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 14:18:33,659 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 14:18:33,661 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 14:18:33,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:33,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:18:33,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:33,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:33,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:33,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:18:33,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:18:33,673 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:18:33,674 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-08 14:18:33,674 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-08 14:18:33,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,676 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 14:18:33,677 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 14:18:33,678 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:18:33,678 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:18:33,678 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:18:33,679 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 2*ULTIMATE.start_main_~z~0#1 + 1 Supporting invariants [] [2025-02-08 14:18:33,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2025-02-08 14:18:33,685 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:18:33,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:33,697 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:18:33,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:18:33,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:33,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:18:33,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:33,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:33,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:33,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:33,707 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:18:33,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:33,718 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 14:18:33,719 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 14:18:33,719 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 14:18:33,730 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 20 states and 27 transitions. Complement of second has 5 states. [2025-02-08 14:18:33,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-08 14:18:33,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 14:18:33,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2025-02-08 14:18:33,731 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-08 14:18:33,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:33,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-08 14:18:33,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:33,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-08 14:18:33,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:33,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 27 transitions. [2025-02-08 14:18:33,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-02-08 14:18:33,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 16 states and 21 transitions. [2025-02-08 14:18:33,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-02-08 14:18:33,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2025-02-08 14:18:33,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2025-02-08 14:18:33,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:18:33,733 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 21 transitions. [2025-02-08 14:18:33,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2025-02-08 14:18:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-08 14:18:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 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 14:18:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2025-02-08 14:18:33,734 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 21 transitions. [2025-02-08 14:18:33,734 INFO L432 stractBuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2025-02-08 14:18:33,734 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-08 14:18:33,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2025-02-08 14:18:33,735 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-02-08 14:18:33,735 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:18:33,735 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:18:33,735 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1] [2025-02-08 14:18:33,735 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-08 14:18:33,735 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~y~0#1, main_~z~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823);" "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume !!(main_~z~0#1 <= 1073741823);" [2025-02-08 14:18:33,735 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume !(main_~y~0#1 >= 0);main_~z~0#1 := main_~z~0#1 - 1;" [2025-02-08 14:18:33,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:33,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1088432585, now seen corresponding path program 3 times [2025-02-08 14:18:33,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:33,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272026519] [2025-02-08 14:18:33,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:18:33,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:33,741 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 9 statements into 2 equivalence classes. [2025-02-08 14:18:33,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:18:33,747 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 14:18:33,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,747 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:33,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:18:33,752 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:18:33,752 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,752 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:33,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1152, now seen corresponding path program 3 times [2025-02-08 14:18:33,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:33,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151967307] [2025-02-08 14:18:33,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 14:18:33,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:33,757 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:33,762 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:33,762 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-08 14:18:33,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,762 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:33,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:33,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:33,764 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,764 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:33,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:33,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1988305848, now seen corresponding path program 2 times [2025-02-08 14:18:33,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:18:33,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672435620] [2025-02-08 14:18:33,765 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:18:33,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:18:33,770 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-02-08 14:18:33,772 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:18:33,772 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:18:33,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,773 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:18:33,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 14:18:33,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 14:18:33,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:33,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:18:33,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:18:33,806 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:18:33,806 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:18:33,806 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:18:33,806 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:18:33,806 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:18:33,807 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,807 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:18:33,807 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:18:33,807 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2025-02-08 14:18:33,807 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:18:33,807 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:18:33,807 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,812 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,814 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,819 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,861 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:18:33,861 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:18:33,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,863 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 14:18:33,864 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 14:18:33,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:18:33,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:33,882 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 14:18:33,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,884 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 14:18:33,885 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 14:18:33,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:18:33,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:18:33,909 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:18:33,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-02-08 14:18:33,913 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:18:33,913 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:18:33,913 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:18:33,913 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:18:33,913 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:18:33,913 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,913 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:18:33,913 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:18:33,913 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2025-02-08 14:18:33,913 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:18:33,913 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:18:33,914 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,923 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,928 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:18:33,962 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:18:33,962 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:18:33,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,966 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 14:18:33,967 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 14:18:33,968 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 14:18:33,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:18:33,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:18:33,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:18:33,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:18:33,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:18:33,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:18:33,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:18:33,981 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:18:33,982 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-08 14:18:33,982 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-08 14:18:33,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:18:33,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:18:33,984 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 14:18:33,985 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 14:18:33,986 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:18:33,986 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:18:33,986 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:18:33,986 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 2*ULTIMATE.start_main_~z~0#1 + 1 Supporting invariants [] [2025-02-08 14:18:33,992 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 14:18:33,993 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:18:34,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:34,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:18:34,011 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:18:34,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:34,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:34,011 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:18:34,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:34,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:34,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:34,026 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:34,026 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:34,027 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:18:34,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:34,042 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 14:18:34,044 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 14:18:34,044 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 14:18:34,062 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 18 states and 23 transitions. Complement of second has 5 states. [2025-02-08 14:18:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-08 14:18:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 14:18:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2025-02-08 14:18:34,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2025-02-08 14:18:34,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:34,063 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-08 14:18:34,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:34,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:18:34,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:18:34,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:34,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:34,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:18:34,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:34,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:34,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:34,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:34,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:34,092 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:18:34,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:34,102 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 14:18:34,102 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-08 14:18:34,102 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 14:18:34,116 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 18 states and 23 transitions. Complement of second has 5 states. [2025-02-08 14:18:34,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-08 14:18:34,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 14:18:34,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2025-02-08 14:18:34,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2025-02-08 14:18:34,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:34,126 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-08 14:18:34,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:34,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-08 14:18:34,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:18:34,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-02-08 14:18:34,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 14:18:34,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 14:18:34,148 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:34,148 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:34,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:18:34,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:34,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:18:34,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:18:34,163 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:18:34,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:18:34,163 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:18:34,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:18:34,176 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 14:18:34,177 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-08 14:18:34,177 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 14:18:34,189 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 21 states and 27 transitions. Complement of second has 4 states. [2025-02-08 14:18:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-08 14:18:34,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 14:18:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2025-02-08 14:18:34,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2025-02-08 14:18:34,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:34,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 2 letters. [2025-02-08 14:18:34,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:34,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 4 letters. [2025-02-08 14:18:34,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:18:34,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 27 transitions. [2025-02-08 14:18:34,191 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-08 14:18:34,191 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2025-02-08 14:18:34,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-08 14:18:34,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-08 14:18:34,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-08 14:18:34,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-08 14:18:34,192 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 14:18:34,192 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 14:18:34,192 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 14:18:34,192 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-08 14:18:34,192 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-08 14:18:34,192 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-08 14:18:34,192 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-08 14:18:34,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.02 02:18:34 BoogieIcfgContainer [2025-02-08 14:18:34,197 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-08 14:18:34,198 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:18:34,198 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:18:34,198 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:18:34,198 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:18:32" (3/4) ... [2025-02-08 14:18:34,200 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-08 14:18:34,200 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:18:34,201 INFO L158 Benchmark]: Toolchain (without parser) took 2502.91ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 104.0MB in the end (delta: 7.4MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2025-02-08 14:18:34,201 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:18:34,201 INFO L158 Benchmark]: CACSL2BoogieTranslator took 130.07ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 101.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:18:34,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.44ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:18:34,201 INFO L158 Benchmark]: Boogie Preprocessor took 14.94ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 99.5MB in the end (delta: 989.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:18:34,201 INFO L158 Benchmark]: IcfgBuilder took 161.88ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 89.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:18:34,201 INFO L158 Benchmark]: BuchiAutomizer took 2171.91ms. Allocated memory is still 142.6MB. Free memory was 89.9MB in the beginning and 104.1MB in the end (delta: -14.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:18:34,202 INFO L158 Benchmark]: Witness Printer took 2.48ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 104.0MB in the end (delta: 37.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:18:34,202 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 130.07ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 101.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.44ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 100.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.94ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 99.5MB in the end (delta: 989.3kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 161.88ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 89.9MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2171.91ms. Allocated memory is still 142.6MB. Free memory was 89.9MB in the beginning and 104.1MB in the end (delta: -14.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.48ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 104.0MB in the end (delta: 37.0kB). 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (((long) 2 * z) + 1) and consists of 3 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function (((long) 2 * z) + 1) and consists of 3 locations. One nondeterministic module has affine ranking function (((long) 2 * z) + 1) and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 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 [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36 IncrementalHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 45 mSDtfsCounter, 36 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s 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 14:18:34,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE