./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Flip2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/Flip2.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 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 19:00:54,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 19:00:54,682 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-02-06 19:00:54,686 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 19:00:54,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 19:00:54,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-02-06 19:00:54,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 19:00:54,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 19:00:54,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 19:00:54,712 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 19:00:54,712 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 19:00:54,712 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 19:00:54,713 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 19:00:54,713 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 19:00:54,713 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-06 19:00:54,713 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-06 19:00:54,713 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-06 19:00:54,713 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-06 19:00:54,713 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-06 19:00:54,713 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-06 19:00:54,714 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 19:00:54,714 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-06 19:00:54,714 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 19:00:54,714 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 19:00:54,714 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-06 19:00:54,714 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-06 19:00:54,714 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-06 19:00:54,714 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 19:00:54,714 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 19:00:54,714 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-06 19:00:54,715 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 19:00:54,715 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 19:00:54,715 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 19:00:54,715 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 19:00:54,715 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 19:00:54,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 19:00:54,715 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-06 19:00:54,715 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 -> 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac [2025-02-06 19:00:54,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 19:00:54,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 19:00:54,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 19:00:54,938 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 19:00:54,939 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 19:00:54,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Flip2.c [2025-02-06 19:00:56,142 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e40747c56/7562480a95e7462cb561a1684c0db8aa/FLAG8f45b7c01 [2025-02-06 19:00:56,313 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 19:00:56,314 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Flip2.c [2025-02-06 19:00:56,322 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e40747c56/7562480a95e7462cb561a1684c0db8aa/FLAG8f45b7c01 [2025-02-06 19:00:56,365 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e40747c56/7562480a95e7462cb561a1684c0db8aa [2025-02-06 19:00:56,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 19:00:56,368 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 19:00:56,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 19:00:56,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 19:00:56,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 19:00:56,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46165b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56, skipping insertion in model container [2025-02-06 19:00:56,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,386 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 19:00:56,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 19:00:56,482 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 19:00:56,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 19:00:56,501 INFO L204 MainTranslator]: Completed translation [2025-02-06 19:00:56,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56 WrapperNode [2025-02-06 19:00:56,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 19:00:56,502 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 19:00:56,503 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 19:00:56,503 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 19:00:56,508 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,519 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2025-02-06 19:00:56,520 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 19:00:56,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 19:00:56,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 19:00:56,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 19:00:56,526 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,527 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,531 INFO L175 MemorySlicer]: No memory access in input program. [2025-02-06 19:00:56,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,532 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,533 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 19:00:56,534 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 19:00:56,534 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 19:00:56,534 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 19:00:56,536 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (1/1) ... [2025-02-06 19:00:56,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:56,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:56,563 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:56,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-06 19:00:56,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 19:00:56,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 19:00:56,632 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 19:00:56,634 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 19:00:56,696 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-02-06 19:00:56,697 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 19:00:56,703 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 19:00:56,703 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 19:00:56,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:00:56 BoogieIcfgContainer [2025-02-06 19:00:56,704 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 19:00:56,705 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-06 19:00:56,705 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-06 19:00:56,709 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-06 19:00:56,709 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:00:56,710 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.02 07:00:56" (1/3) ... [2025-02-06 19:00:56,710 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55037de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 07:00:56, skipping insertion in model container [2025-02-06 19:00:56,711 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:00:56,711 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:00:56" (2/3) ... [2025-02-06 19:00:56,711 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55037de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 07:00:56, skipping insertion in model container [2025-02-06 19:00:56,711 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:00:56,711 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:00:56" (3/3) ... [2025-02-06 19:00:56,712 INFO L363 chiAutomizerObserver]: Analyzing ICFG Flip2.c [2025-02-06 19:00:56,754 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-06 19:00:56,754 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-06 19:00:56,754 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-06 19:00:56,754 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-06 19:00:56,754 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-06 19:00:56,755 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-06 19:00:56,755 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-06 19:00:56,755 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-06 19:00:56,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2025-02-06 19:00:56,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-06 19:00:56,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:00:56,769 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:00:56,773 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 19:00:56,773 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-06 19:00:56,774 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-06 19:00:56,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2025-02-06 19:00:56,775 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-06 19:00:56,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:00:56,775 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:00:56,775 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-06 19:00:56,775 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-06 19:00:56,781 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" [2025-02-06 19:00:56,781 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1;" [2025-02-06 19:00:56,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1248, now seen corresponding path program 1 times [2025-02-06 19:00:56,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:56,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967761377] [2025-02-06 19:00:56,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:56,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:56,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:00:56,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:00:56,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:56,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:56,842 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:56,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:00:56,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:00:56,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:56,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:56,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:56,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:56,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1181, now seen corresponding path program 1 times [2025-02-06 19:00:56,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:56,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485613809] [2025-02-06 19:00:56,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:56,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:56,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:00:56,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:00:56,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:56,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:56,875 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:56,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:00:56,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:00:56,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:56,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:56,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:56,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:56,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1199548, now seen corresponding path program 1 times [2025-02-06 19:00:56,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:56,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831773326] [2025-02-06 19:00:56,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:56,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:56,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:00:56,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:00:56,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:56,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:56,898 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:56,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:00:56,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:00:56,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:56,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:56,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:57,008 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:57,008 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:57,008 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:57,009 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:57,009 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:00:57,009 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,009 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:57,009 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:57,009 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2025-02-06 19:00:57,009 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:57,009 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:57,018 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,026 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,094 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:57,095 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:00:57,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-06 19:00:57,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:57,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:57,126 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:00:57,126 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:00:57,132 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 [2025-02-06 19:00:57,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,136 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-06 19:00:57,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:57,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:57,157 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:00:57,157 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:00:57,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-06 19:00:57,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,165 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-06 19:00:57,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:57,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:57,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-06 19:00:57,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,204 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-06 19:00:57,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:00:57,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:57,248 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:00:57,252 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-06 19:00:57,252 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:57,252 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:57,252 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:57,252 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:57,252 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:00:57,252 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,252 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:57,252 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:57,252 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2025-02-06 19:00:57,252 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:57,253 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:57,254 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,259 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,275 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,322 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:57,324 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:00:57,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,327 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-06 19:00:57,331 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:57,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:57,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:57,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:57,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:57,349 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 19:00:57,350 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 19:00:57,354 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:00:57,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2025-02-06 19:00:57,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,362 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-06 19:00:57,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:57,379 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:57,379 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:00:57,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:57,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:57,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:57,382 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:00:57,382 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:00:57,388 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:00:57,391 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-02-06 19:00:57,394 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-06 19:00:57,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-06 19:00:57,403 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:00:57,404 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:00:57,404 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:00:57,404 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2025-02-06 19:00:57,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-02-06 19:00:57,412 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:00:57,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:57,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:00:57,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:00:57,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:57,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 19:00:57,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:57,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:00:57,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:00:57,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:57,455 WARN L254 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 19:00:57,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:00:57,491 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 [2025-02-06 19:00:57,492 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-02-06 19:00:57,530 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 27 transitions. Complement of second has 7 states. [2025-02-06 19:00:57,532 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 [2025-02-06 19:00:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2025-02-06 19:00:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2025-02-06 19:00:57,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 2 letters. [2025-02-06 19:00:57,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:57,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-06 19:00:57,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:57,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 4 letters. [2025-02-06 19:00:57,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:57,544 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 27 transitions. [2025-02-06 19:00:57,545 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2025-02-06 19:00:57,549 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 20 transitions. [2025-02-06 19:00:57,550 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2025-02-06 19:00:57,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2025-02-06 19:00:57,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2025-02-06 19:00:57,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:00:57,550 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2025-02-06 19:00:57,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2025-02-06 19:00:57,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2025-02-06 19:00:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 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) [2025-02-06 19:00:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2025-02-06 19:00:57,571 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2025-02-06 19:00:57,571 INFO L432 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2025-02-06 19:00:57,572 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-06 19:00:57,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2025-02-06 19:00:57,572 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2025-02-06 19:00:57,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:00:57,572 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:00:57,573 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-06 19:00:57,573 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 19:00:57,573 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" [2025-02-06 19:00:57,573 INFO L754 eck$LassoCheckResult]: Loop: "assume !(main_~i~0#1 < main_~j~0#1);" "assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" [2025-02-06 19:00:57,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:57,574 INFO L85 PathProgramCache]: Analyzing trace with hash 38695, now seen corresponding path program 1 times [2025-02-06 19:00:57,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:57,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840013005] [2025-02-06 19:00:57,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:57,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:57,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:57,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:57,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:57,581 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:57,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:57,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:57,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:57,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:57,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 35719, now seen corresponding path program 1 times [2025-02-06 19:00:57,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:57,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488561596] [2025-02-06 19:00:57,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:57,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:57,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:57,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:57,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:57,592 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:57,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:57,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:57,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:57,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:57,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:57,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1152768673, now seen corresponding path program 1 times [2025-02-06 19:00:57,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:57,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259100436] [2025-02-06 19:00:57,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:57,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:57,605 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 19:00:57,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 19:00:57,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:57,609 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:57,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 19:00:57,611 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 19:00:57,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:57,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:57,646 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:57,646 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:57,646 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:57,646 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:57,646 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:00:57,646 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,646 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:57,646 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:57,646 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2025-02-06 19:00:57,646 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:57,646 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:57,647 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,696 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:57,697 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:00:57,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,698 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-06 19:00:57,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:57,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:57,717 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:00:57,717 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: [] [2025-02-06 19:00:57,722 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 [2025-02-06 19:00:57,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,724 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-06 19:00:57,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:57,726 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:57,743 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:00:57,744 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: [] [2025-02-06 19:00:57,749 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 [2025-02-06 19:00:57,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,751 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-06 19:00:57,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:57,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:57,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-06 19:00:57,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,770 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-06 19:00:57,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:00:57,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:57,817 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:00:57,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-06 19:00:57,821 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:57,822 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:57,822 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:57,822 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:57,822 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:00:57,822 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,822 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:57,822 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:57,822 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2025-02-06 19:00:57,822 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:57,822 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:57,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:57,864 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:57,864 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:00:57,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,866 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-06 19:00:57,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:57,876 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:57,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:57,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:57,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:57,878 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 19:00:57,879 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 19:00:57,882 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:00:57,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-06 19:00:57,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,889 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-06 19:00:57,891 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:57,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:57,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:57,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:57,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:57,903 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 19:00:57,903 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 19:00:57,906 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:00:57,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-06 19:00:57,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,914 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:57,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-06 19:00:57,916 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:57,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:57,926 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:00:57,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:57,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:57,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:57,927 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:00:57,927 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:00:57,929 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:00:57,932 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2025-02-06 19:00:57,932 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2025-02-06 19:00:57,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:57,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:57,934 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) [2025-02-06 19:00:57,935 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 [2025-02-06 19:00:57,935 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:00:57,935 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:00:57,935 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:00:57,935 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2025-02-06 19:00:57,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-06 19:00:57,942 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:00:57,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:57,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:57,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:57,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:57,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 19:00:57,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:57,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:57,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:57,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:57,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:57,976 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 19:00:57,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:57,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:00:57,995 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 [2025-02-06 19:00:57,995 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2025-02-06 19:00:58,016 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 [2025-02-06 19:00:58,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-06 19:00:58,038 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 35 states and 50 transitions. Complement of second has 7 states. [2025-02-06 19:00:58,040 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 [2025-02-06 19:00:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2025-02-06 19:00:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2025-02-06 19:00:58,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-06 19:00:58,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:58,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-06 19:00:58,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:58,041 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-06 19:00:58,041 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:58,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2025-02-06 19:00:58,042 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2025-02-06 19:00:58,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 31 states and 45 transitions. [2025-02-06 19:00:58,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2025-02-06 19:00:58,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2025-02-06 19:00:58,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 45 transitions. [2025-02-06 19:00:58,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:00:58,043 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 45 transitions. [2025-02-06 19:00:58,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 45 transitions. [2025-02-06 19:00:58,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2025-02-06 19:00:58,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 states have internal predecessors, (38), 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) [2025-02-06 19:00:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2025-02-06 19:00:58,045 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 38 transitions. [2025-02-06 19:00:58,045 INFO L432 stractBuchiCegarLoop]: Abstraction has 25 states and 38 transitions. [2025-02-06 19:00:58,045 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-06 19:00:58,045 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 38 transitions. [2025-02-06 19:00:58,045 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2025-02-06 19:00:58,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:00:58,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:00:58,045 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-06 19:00:58,045 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 19:00:58,046 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" [2025-02-06 19:00:58,046 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" [2025-02-06 19:00:58,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1199551, now seen corresponding path program 1 times [2025-02-06 19:00:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770967095] [2025-02-06 19:00:58,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:58,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:58,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:00:58,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:00:58,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,049 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:58,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:00:58,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:00:58,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:58,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash 33858, now seen corresponding path program 1 times [2025-02-06 19:00:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121229800] [2025-02-06 19:00:58,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:58,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:58,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:58,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,056 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:58,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:58,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:58,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:58,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1376089540, now seen corresponding path program 1 times [2025-02-06 19:00:58,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:58,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831365230] [2025-02-06 19:00:58,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:58,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:58,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 19:00:58,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:58,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,063 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:58,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 19:00:58,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:58,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:58,093 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:58,093 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:58,093 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:58,093 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:58,093 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:00:58,093 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,093 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:58,093 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:58,093 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2025-02-06 19:00:58,093 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:58,093 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:58,094 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,099 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,106 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,131 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:58,131 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:00:58,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,134 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-06 19:00:58,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:58,137 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:58,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2025-02-06 19:00:58,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,161 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-06 19:00:58,162 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:00:58,162 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:58,293 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:00:58,301 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 [2025-02-06 19:00:58,301 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:58,301 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:58,301 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:58,301 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:58,301 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:00:58,301 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,301 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:58,301 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:58,301 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2025-02-06 19:00:58,301 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:58,301 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:58,302 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,308 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,312 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,339 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:58,339 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:00:58,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,341 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-06 19:00:58,344 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:58,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:58,354 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:00:58,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:58,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:58,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:58,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:00:58,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:00:58,357 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:00:58,366 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 19:00:58,367 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-06 19:00:58,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,369 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-06 19:00:58,371 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:00:58,371 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:00:58,371 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:00:58,371 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2025-02-06 19:00:58,377 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 [2025-02-06 19:00:58,378 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:00:58,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:58,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 19:00:58,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 19:00:58,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:58,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 19:00:58,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:58,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:58,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:58,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:58,403 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 19:00:58,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:00:58,428 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 [2025-02-06 19:00:58,428 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-02-06 19:00:58,449 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 63 states and 92 transitions. Complement of second has 5 states. [2025-02-06 19:00:58,451 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 [2025-02-06 19:00:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-02-06 19:00:58,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2025-02-06 19:00:58,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2025-02-06 19:00:58,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:58,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-06 19:00:58,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:58,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2025-02-06 19:00:58,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:58,452 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 92 transitions. [2025-02-06 19:00:58,453 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2025-02-06 19:00:58,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 56 states and 81 transitions. [2025-02-06 19:00:58,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2025-02-06 19:00:58,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2025-02-06 19:00:58,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2025-02-06 19:00:58,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:00:58,454 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 81 transitions. [2025-02-06 19:00:58,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2025-02-06 19:00:58,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2025-02-06 19:00:58,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 41 states have internal predecessors, (61), 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) [2025-02-06 19:00:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 61 transitions. [2025-02-06 19:00:58,456 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 61 transitions. [2025-02-06 19:00:58,456 INFO L432 stractBuchiCegarLoop]: Abstraction has 42 states and 61 transitions. [2025-02-06 19:00:58,456 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-06 19:00:58,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 61 transitions. [2025-02-06 19:00:58,458 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2025-02-06 19:00:58,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:00:58,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:00:58,458 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2025-02-06 19:00:58,458 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-06 19:00:58,459 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" "assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1;" [2025-02-06 19:00:58,459 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1;" [2025-02-06 19:00:58,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1376089537, now seen corresponding path program 1 times [2025-02-06 19:00:58,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:58,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624328948] [2025-02-06 19:00:58,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:58,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:58,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 19:00:58,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:58,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:00:58,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:00:58,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624328948] [2025-02-06 19:00:58,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624328948] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 19:00:58,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 19:00:58,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 19:00:58,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50232953] [2025-02-06 19:00:58,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 19:00:58,504 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-06 19:00:58,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:58,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1181, now seen corresponding path program 2 times [2025-02-06 19:00:58,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:58,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660088551] [2025-02-06 19:00:58,504 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 19:00:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:58,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:00:58,508 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:00:58,508 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 19:00:58,508 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,508 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:58,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:00:58,510 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:00:58,510 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:58,536 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:58,536 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:58,536 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:58,536 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:58,536 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:00:58,536 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,536 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:58,536 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:58,537 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2025-02-06 19:00:58,537 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:58,537 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:58,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,543 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,546 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,577 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:58,577 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:00:58,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,579 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-06 19:00:58,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:58,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:58,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-02-06 19:00:58,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,606 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-06 19:00:58,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:00:58,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:58,641 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:00:58,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2025-02-06 19:00:58,645 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:58,646 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:58,646 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:58,646 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:58,646 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:00:58,646 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,646 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:58,646 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:58,646 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2025-02-06 19:00:58,646 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:58,646 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:58,646 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,661 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,666 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,695 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:58,695 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:00:58,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,697 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-06 19:00:58,699 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:58,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:58,709 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:00:58,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:58,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:58,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:58,710 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:00:58,710 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:00:58,712 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:00:58,716 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 19:00:58,716 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-06 19:00:58,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,718 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-06 19:00:58,720 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:00:58,720 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:00:58,720 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:00:58,720 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2025-02-06 19:00:58,726 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 [2025-02-06 19:00:58,727 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:00:58,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:58,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 19:00:58,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:58,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:58,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 19:00:58,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:58,754 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 19:00:58,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 19:00:58,755 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:58,755 WARN L254 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 19:00:58,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:00:58,771 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 [2025-02-06 19:00:58,771 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29 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) [2025-02-06 19:00:58,787 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29. 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 74 states and 105 transitions. Complement of second has 7 states. [2025-02-06 19:00:58,789 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 [2025-02-06 19:00:58,789 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) [2025-02-06 19:00:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2025-02-06 19:00:58,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-06 19:00:58,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:58,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2025-02-06 19:00:58,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:58,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2025-02-06 19:00:58,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:58,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 105 transitions. [2025-02-06 19:00:58,791 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2025-02-06 19:00:58,792 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 58 states and 84 transitions. [2025-02-06 19:00:58,792 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2025-02-06 19:00:58,792 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2025-02-06 19:00:58,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 84 transitions. [2025-02-06 19:00:58,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:00:58,792 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 84 transitions. [2025-02-06 19:00:58,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 84 transitions. [2025-02-06 19:00:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2025-02-06 19:00:58,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 42 states have internal predecessors, (63), 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) [2025-02-06 19:00:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2025-02-06 19:00:58,794 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43 states and 63 transitions. [2025-02-06 19:00:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:00:58,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 19:00:58,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 19:00:58,796 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-02-06 19:00:58,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:00:58,809 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2025-02-06 19:00:58,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 69 transitions. [2025-02-06 19:00:58,810 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2025-02-06 19:00:58,810 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 45 states and 62 transitions. [2025-02-06 19:00:58,810 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2025-02-06 19:00:58,810 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2025-02-06 19:00:58,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 62 transitions. [2025-02-06 19:00:58,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:00:58,811 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 62 transitions. [2025-02-06 19:00:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 62 transitions. [2025-02-06 19:00:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2025-02-06 19:00:58,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 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) [2025-02-06 19:00:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2025-02-06 19:00:58,816 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 58 transitions. [2025-02-06 19:00:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 19:00:58,817 INFO L432 stractBuchiCegarLoop]: Abstraction has 41 states and 58 transitions. [2025-02-06 19:00:58,817 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-06 19:00:58,817 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 58 transitions. [2025-02-06 19:00:58,818 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2025-02-06 19:00:58,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:00:58,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:00:58,819 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2025-02-06 19:00:58,819 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 19:00:58,819 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_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" "assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1;" [2025-02-06 19:00:58,819 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" "assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1;" [2025-02-06 19:00:58,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1376003018, now seen corresponding path program 1 times [2025-02-06 19:00:58,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:58,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151026396] [2025-02-06 19:00:58,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:58,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:58,822 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 19:00:58,826 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:58,826 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:00:58,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:00:58,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151026396] [2025-02-06 19:00:58,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151026396] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 19:00:58,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 19:00:58,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 19:00:58,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341303471] [2025-02-06 19:00:58,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 19:00:58,850 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-06 19:00:58,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash 36709, now seen corresponding path program 2 times [2025-02-06 19:00:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:58,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939357081] [2025-02-06 19:00:58,850 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 19:00:58,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:58,852 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:58,853 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:58,853 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 19:00:58,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,853 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:58,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:58,854 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:58,854 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:58,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:58,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:58,881 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:58,881 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:58,881 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:58,881 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:58,882 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:00:58,882 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,882 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:58,882 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:58,882 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2025-02-06 19:00:58,882 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:58,882 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:58,882 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,887 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:58,922 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:58,922 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:00:58,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,924 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-06 19:00:58,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:58,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:58,944 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:00:58,944 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:00:58,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-02-06 19:00:58,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,952 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-06 19:00:58,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:58,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:58,970 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:00:58,970 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:00:58,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-06 19:00:58,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,977 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-02-06 19:00:58,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:00:58,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:58,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2025-02-06 19:00:58,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:58,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:58,996 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:58,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-02-06 19:00:58,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:00:58,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:00:59,039 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:00:59,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-02-06 19:00:59,043 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:00:59,043 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:00:59,043 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:00:59,043 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:00:59,043 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:00:59,043 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:59,043 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:00:59,043 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:00:59,043 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2025-02-06 19:00:59,043 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:00:59,043 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:00:59,044 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:59,047 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:59,049 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:00:59,080 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:00:59,080 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:00:59,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:59,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:59,082 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:59,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-02-06 19:00:59,084 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:59,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:59,093 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:59,093 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:59,093 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:59,094 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 19:00:59,094 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 19:00:59,096 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:00:59,102 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 [2025-02-06 19:00:59,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:59,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:59,104 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:59,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-02-06 19:00:59,106 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:59,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:59,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:59,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:59,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:59,117 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 19:00:59,117 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 19:00:59,119 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:00:59,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-02-06 19:00:59,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:59,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:59,126 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:59,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-02-06 19:00:59,128 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:00:59,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:00:59,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:00:59,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:00:59,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:00:59,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:00:59,138 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:00:59,138 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:00:59,140 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:00:59,143 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2025-02-06 19:00:59,143 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2025-02-06 19:00:59,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:00:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:00:59,145 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:00:59,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2025-02-06 19:00:59,147 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:00:59,147 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:00:59,147 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:00:59,147 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2025-02-06 19:00:59,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2025-02-06 19:00:59,153 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:00:59,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:59,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 19:00:59,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:59,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:59,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:59,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 19:00:59,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:59,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:00:59,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:00:59,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:59,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:00:59,186 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 19:00:59,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:00:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:00:59,203 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 [2025-02-06 19:00:59,203 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25 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) [2025-02-06 19:00:59,224 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25. 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 74 states and 102 transitions. Complement of second has 5 states. [2025-02-06 19:00:59,226 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 [2025-02-06 19:00:59,226 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) [2025-02-06 19:00:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2025-02-06 19:00:59,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2025-02-06 19:00:59,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:59,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2025-02-06 19:00:59,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:59,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 6 letters. [2025-02-06 19:00:59,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:00:59,227 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 102 transitions. [2025-02-06 19:00:59,228 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-02-06 19:00:59,228 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 57 states and 79 transitions. [2025-02-06 19:00:59,228 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2025-02-06 19:00:59,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2025-02-06 19:00:59,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 79 transitions. [2025-02-06 19:00:59,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:00:59,229 INFO L218 hiAutomatonCegarLoop]: Abstraction has 57 states and 79 transitions. [2025-02-06 19:00:59,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 79 transitions. [2025-02-06 19:00:59,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2025-02-06 19:00:59,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 48 states have internal predecessors, (69), 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) [2025-02-06 19:00:59,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2025-02-06 19:00:59,231 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 69 transitions. [2025-02-06 19:00:59,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:00:59,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 19:00:59,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 19:00:59,231 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-02-06 19:00:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:00:59,244 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2025-02-06 19:00:59,244 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 66 transitions. [2025-02-06 19:00:59,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-02-06 19:00:59,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 47 states and 61 transitions. [2025-02-06 19:00:59,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2025-02-06 19:00:59,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2025-02-06 19:00:59,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 61 transitions. [2025-02-06 19:00:59,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 19:00:59,246 INFO L218 hiAutomatonCegarLoop]: Abstraction has 47 states and 61 transitions. [2025-02-06 19:00:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 61 transitions. [2025-02-06 19:00:59,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2025-02-06 19:00:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 34 states have internal predecessors, (47), 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) [2025-02-06 19:00:59,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2025-02-06 19:00:59,247 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 47 transitions. [2025-02-06 19:00:59,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 19:00:59,249 INFO L432 stractBuchiCegarLoop]: Abstraction has 35 states and 47 transitions. [2025-02-06 19:00:59,249 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-06 19:00:59,249 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 47 transitions. [2025-02-06 19:00:59,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-02-06 19:00:59,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:00:59,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:00:59,250 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2025-02-06 19:00:59,250 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1] [2025-02-06 19:00:59,250 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" "assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1;" [2025-02-06 19:00:59,250 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" "assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" "assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1;" [2025-02-06 19:00:59,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1376090498, now seen corresponding path program 2 times [2025-02-06 19:00:59,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:59,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41236915] [2025-02-06 19:00:59,250 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 19:00:59,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:59,253 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 7 statements into 2 equivalence classes. [2025-02-06 19:00:59,257 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:59,257 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 19:00:59,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:59,257 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:59,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 19:00:59,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:59,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:59,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:59,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:59,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1341464194, now seen corresponding path program 1 times [2025-02-06 19:00:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:59,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008004673] [2025-02-06 19:00:59,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:59,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:59,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:00:59,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:00:59,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:59,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:59,269 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:59,272 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 19:00:59,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 19:00:59,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:59,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:59,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:59,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:00:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1006848511, now seen corresponding path program 1 times [2025-02-06 19:00:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:00:59,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342900291] [2025-02-06 19:00:59,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:00:59,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:00:59,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 19:00:59,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 19:00:59,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:59,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:59,281 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:59,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 19:00:59,286 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 19:00:59,286 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:59,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:59,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:00:59,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2025-02-06 19:00:59,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-02-06 19:00:59,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-02-06 19:00:59,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 19:00:59,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:59,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:59,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:59,392 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:00:59,393 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 19:00:59,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 19:00:59,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:00:59,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:00:59,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.02 07:00:59 BoogieIcfgContainer [2025-02-06 19:00:59,415 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-06 19:00:59,416 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 19:00:59,416 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 19:00:59,416 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 19:00:59,416 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:00:56" (3/4) ... [2025-02-06 19:00:59,418 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-02-06 19:00:59,440 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 19:00:59,441 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 19:00:59,441 INFO L158 Benchmark]: Toolchain (without parser) took 3073.47ms. Allocated memory is still 167.8MB. Free memory was 125.2MB in the beginning and 120.9MB in the end (delta: 4.3MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2025-02-06 19:00:59,441 INFO L158 Benchmark]: CDTParser took 0.76ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:00:59,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132.27ms. Allocated memory is still 167.8MB. Free memory was 124.2MB in the beginning and 115.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 19:00:59,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.13ms. Allocated memory is still 167.8MB. Free memory was 115.4MB in the beginning and 114.4MB in the end (delta: 998.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:00:59,441 INFO L158 Benchmark]: Boogie Preprocessor took 12.64ms. Allocated memory is still 167.8MB. Free memory was 114.4MB in the beginning and 113.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:00:59,442 INFO L158 Benchmark]: IcfgBuilder took 170.21ms. Allocated memory is still 167.8MB. Free memory was 113.4MB in the beginning and 103.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 19:00:59,442 INFO L158 Benchmark]: BuchiAutomizer took 2710.63ms. Allocated memory is still 167.8MB. Free memory was 103.8MB in the beginning and 123.8MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:00:59,442 INFO L158 Benchmark]: Witness Printer took 24.77ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 120.9MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 19:00:59,443 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 132.27ms. Allocated memory is still 167.8MB. Free memory was 124.2MB in the beginning and 115.4MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.13ms. Allocated memory is still 167.8MB. Free memory was 115.4MB in the beginning and 114.4MB in the end (delta: 998.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.64ms. Allocated memory is still 167.8MB. Free memory was 114.4MB in the beginning and 113.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 170.21ms. Allocated memory is still 167.8MB. Free memory was 113.4MB in the beginning and 103.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2710.63ms. Allocated memory is still 167.8MB. Free memory was 103.8MB in the beginning and 123.8MB in the end (delta: -19.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 24.77ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 120.9MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function (((long) -1 * j) + i) and consists of 3 locations. One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 35 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 36 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq156 hnf92 smp100 dnf100 smp100 tf109 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2] [L14] COND FALSE !(i < j) VAL [i=2, j=2] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2] [L14] COND FALSE !(i < j) VAL [i=2, j=2] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-02-06 19:00:59,455 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)