./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 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-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-?-48c9605-m [2025-02-08 14:20:22,195 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 14:20:22,231 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-02-08 14:20:22,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 14:20:22,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 14:20:22,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-02-08 14:20:22,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 14:20:22,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 14:20:22,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 14:20:22,249 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 14:20:22,249 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 14:20:22,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 14:20:22,250 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-08 14:20:22,250 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-08 14:20:22,250 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 14:20:22,251 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 14:20:22,251 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-08 14:20:22,251 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 14:20:22,251 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 14:20:22,251 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 14:20:22,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 14:20:22,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 14:20:22,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 14:20:22,251 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-08 14:20:22,251 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 [2025-02-08 14:20:22,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 14:20:22,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 14:20:22,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 14:20:22,458 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 14:20:22,458 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 14:20:22,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Flip2.c [2025-02-08 14:20:23,615 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/46dbdfd4d/e09e74bfa8504052b4a134074b0699d3/FLAGdb4470442 [2025-02-08 14:20:23,866 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 14:20:23,867 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Flip2.c [2025-02-08 14:20:23,874 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/46dbdfd4d/e09e74bfa8504052b4a134074b0699d3/FLAGdb4470442 [2025-02-08 14:20:24,208 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/46dbdfd4d/e09e74bfa8504052b4a134074b0699d3 [2025-02-08 14:20:24,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 14:20:24,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 14:20:24,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 14:20:24,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 14:20:24,217 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 14:20:24,218 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a56942b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24, skipping insertion in model container [2025-02-08 14:20:24,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,227 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 14:20:24,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:20:24,318 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 14:20:24,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 14:20:24,336 INFO L204 MainTranslator]: Completed translation [2025-02-08 14:20:24,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24 WrapperNode [2025-02-08 14:20:24,337 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 14:20:24,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 14:20:24,338 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 14:20:24,338 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 14:20:24,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,355 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2025-02-08 14:20:24,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 14:20:24,356 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 14:20:24,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 14:20:24,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 14:20:24,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,362 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,365 INFO L175 MemorySlicer]: No memory access in input program. [2025-02-08 14:20:24,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,366 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,366 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,368 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 14:20:24,370 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 14:20:24,370 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 14:20:24,370 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 14:20:24,371 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (1/1) ... [2025-02-08 14:20:24,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:24,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:24,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:24,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-08 14:20:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 14:20:24,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 14:20:24,478 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 14:20:24,480 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 14:20:24,544 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2025-02-08 14:20:24,544 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 14:20:24,552 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 14:20:24,552 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 14:20:24,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:20:24 BoogieIcfgContainer [2025-02-08 14:20:24,554 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 14:20:24,555 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-08 14:20:24,555 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-08 14:20:24,559 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-08 14:20:24,559 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-08 14:20:24,560 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.02 02:20:24" (1/3) ... [2025-02-08 14:20:24,560 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5878f8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.02 02:20:24, skipping insertion in model container [2025-02-08 14:20:24,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-08 14:20:24,560 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 02:20:24" (2/3) ... [2025-02-08 14:20:24,561 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5878f8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.02 02:20:24, skipping insertion in model container [2025-02-08 14:20:24,561 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-08 14:20:24,561 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:20:24" (3/3) ... [2025-02-08 14:20:24,563 INFO L363 chiAutomizerObserver]: Analyzing ICFG Flip2.c [2025-02-08 14:20:24,603 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-08 14:20:24,604 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-08 14:20:24,604 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-08 14:20:24,604 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-08 14:20:24,604 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-08 14:20:24,604 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-08 14:20:24,605 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-08 14:20:24,605 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-08 14:20:24,609 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:24,627 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:24,628 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:24,628 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:24,636 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-08 14:20:24,636 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-08 14:20:24,637 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-08 14:20:24,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:24,637 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-08 14:20:24,638 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:24,638 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:24,638 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2025-02-08 14:20:24,641 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-08 14:20:24,647 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" [2025-02-08 14:20:24,648 INFO L754 eck$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;" [2025-02-08 14:20:24,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:24,652 INFO L85 PathProgramCache]: Analyzing trace with hash 37, now seen corresponding path program 1 times [2025-02-08 14:20:24,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:24,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784529803] [2025-02-08 14:20:24,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:24,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:24,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-08 14:20:24,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-08 14:20:24,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:24,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:24,707 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:24,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-08 14:20:24,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-08 14:20:24,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:24,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:24,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:24,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1117, now seen corresponding path program 1 times [2025-02-08 14:20:24,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:24,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202596135] [2025-02-08 14:20:24,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:24,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:24,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:24,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:24,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:24,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:24,733 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:24,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:24,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:24,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:24,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:24,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:24,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:24,742 INFO L85 PathProgramCache]: Analyzing trace with hash 35713, now seen corresponding path program 1 times [2025-02-08 14:20:24,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:24,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306392604] [2025-02-08 14:20:24,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:24,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:24,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:24,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:24,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:24,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:24,751 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:24,753 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:24,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:24,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:24,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:24,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:24,851 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:24,852 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:24,852 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:24,852 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:24,852 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:24,852 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:24,852 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:24,852 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:24,852 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2025-02-08 14:20:24,853 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:24,853 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:24,867 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:24,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:24,883 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:24,957 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:24,958 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:24,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:24,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:24,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:24,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-08 14:20:24,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:24,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:24,992 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:24,992 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: [] [2025-02-08 14:20:25,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-08 14:20:25,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-08 14:20:25,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:25,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:25,033 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:25,033 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: [] [2025-02-08 14:20:25,066 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 [2025-02-08 14:20:25,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,077 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-08 14:20:25,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:25,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:25,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:25,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-08 14:20:25,114 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:25,114 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:25,150 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:25,154 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 [2025-02-08 14:20:25,154 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:25,154 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:25,154 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:25,154 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:25,154 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:25,154 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,154 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:25,154 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:25,154 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2025-02-08 14:20:25,154 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:25,155 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:25,156 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:25,159 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:25,167 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:25,206 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:25,209 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:25,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-08 14:20:25,217 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:25,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:25,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:25,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:25,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:25,233 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-08 14:20:25,233 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-08 14:20:25,238 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:25,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-08 14:20:25,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-08 14:20:25,254 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:25,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:25,264 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:25,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:25,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:25,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:25,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:25,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:25,269 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:25,272 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-02-08 14:20:25,274 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-08 14:20:25,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,279 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-08 14:20:25,283 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:25,284 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:25,284 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:25,284 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 [] [2025-02-08 14:20:25,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:25,296 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:25,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:25,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-02-08 14:20:25,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-02-08 14:20:25,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:25,325 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:20:25,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:25,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:25,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:25,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:25,335 WARN L254 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:20:25,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:25,377 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-08 14:20:25,378 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:25,418 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 16 states and 25 transitions. Complement of second has 7 states. [2025-02-08 14:20:25,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2025-02-08 14:20:25,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 1 letters. Loop has 2 letters. [2025-02-08 14:20:25,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:25,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2025-02-08 14:20:25,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:25,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 1 letters. Loop has 4 letters. [2025-02-08 14:20:25,430 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:25,431 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 25 transitions. [2025-02-08 14:20:25,432 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2025-02-08 14:20:25,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 19 transitions. [2025-02-08 14:20:25,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-02-08 14:20:25,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2025-02-08 14:20:25,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2025-02-08 14:20:25,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:25,435 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2025-02-08 14:20:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2025-02-08 14:20:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2025-02-08 14:20:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2025-02-08 14:20:25,456 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 18 transitions. [2025-02-08 14:20:25,456 INFO L432 stractBuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2025-02-08 14:20:25,456 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-08 14:20:25,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2025-02-08 14:20:25,457 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2025-02-08 14:20:25,457 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:25,457 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:25,457 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2025-02-08 14:20:25,457 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-08 14:20:25,457 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" [2025-02-08 14:20:25,457 INFO L754 eck$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;" [2025-02-08 14:20:25,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:25,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1152, now seen corresponding path program 1 times [2025-02-08 14:20:25,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:25,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974271460] [2025-02-08 14:20:25,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:25,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:25,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:25,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:25,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:25,462 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:25,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:25,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:25,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:25,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:25,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash 33733, now seen corresponding path program 1 times [2025-02-08 14:20:25,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:25,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607596948] [2025-02-08 14:20:25,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:25,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:25,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:25,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:25,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:25,470 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:25,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:25,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:25,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:25,473 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:25,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:25,474 INFO L85 PathProgramCache]: Analyzing trace with hash 34323174, now seen corresponding path program 1 times [2025-02-08 14:20:25,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:25,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329529582] [2025-02-08 14:20:25,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:25,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:25,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:20:25,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:20:25,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:25,481 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:25,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 14:20:25,484 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 14:20:25,484 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,484 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:25,485 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:25,519 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:25,519 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:25,519 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:25,519 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:25,519 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:25,519 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,519 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:25,519 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:25,520 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2025-02-08 14:20:25,520 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:25,520 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:25,521 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:25,525 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:25,529 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:25,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-08 14:20:25,589 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:25,589 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:25,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,591 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-08 14:20:25,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:25,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:25,614 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:25,614 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:20:25,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:25,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,625 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-08 14:20:25,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:25,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:25,651 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:25,651 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-08 14:20:25,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2025-02-08 14:20:25,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-08 14:20:25,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:25,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:25,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:25,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,684 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-08 14:20:25,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:25,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:25,738 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:25,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-08 14:20:25,743 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:25,743 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:25,743 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:25,743 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:25,743 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:25,743 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,743 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:25,743 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:25,743 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2025-02-08 14:20:25,743 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:25,743 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:25,744 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:25,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:25,755 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:25,805 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:25,805 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:25,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,807 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-08 14:20:25,813 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:25,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:25,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:25,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:25,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:25,827 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-08 14:20:25,827 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-08 14:20:25,831 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:25,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:25,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,844 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-08 14:20:25,854 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:25,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:25,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:25,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:25,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:25,869 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-08 14:20:25,869 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-08 14:20:25,872 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:25,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2025-02-08 14:20:25,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,883 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-08 14:20:25,892 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:25,902 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:25,902 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:25,902 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:25,902 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:25,902 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:25,903 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:25,903 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:25,906 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:25,911 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2025-02-08 14:20:25,911 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2025-02-08 14:20:25,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:25,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:25,914 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:25,916 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:25,916 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:25,916 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:25,916 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 [] [2025-02-08 14:20:25,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-08 14:20:25,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-08 14:20:25,925 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:25,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:25,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:25,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:25,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:25,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:20:25,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:25,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:25,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:25,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:25,946 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:20:25,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:25,969 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-08 14:20:25,970 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:25,989 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 34 states and 49 transitions. Complement of second has 7 states. [2025-02-08 14:20:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2025-02-08 14:20:25,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 3 letters. [2025-02-08 14:20:25,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:25,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 5 letters. Loop has 3 letters. [2025-02-08 14:20:25,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:25,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 6 letters. [2025-02-08 14:20:25,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:25,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2025-02-08 14:20:25,992 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2025-02-08 14:20:25,992 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 30 states and 44 transitions. [2025-02-08 14:20:25,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2025-02-08 14:20:25,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2025-02-08 14:20:25,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 44 transitions. [2025-02-08 14:20:25,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:25,992 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 44 transitions. [2025-02-08 14:20:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 44 transitions. [2025-02-08 14:20:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2025-02-08 14:20:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 23 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 37 transitions. [2025-02-08 14:20:25,994 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 37 transitions. [2025-02-08 14:20:25,994 INFO L432 stractBuchiCegarLoop]: Abstraction has 24 states and 37 transitions. [2025-02-08 14:20:25,994 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-08 14:20:25,994 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 37 transitions. [2025-02-08 14:20:25,994 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2025-02-08 14:20:25,994 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:25,994 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:25,994 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-08 14:20:25,995 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-08 14:20:25,995 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" [2025-02-08 14:20:25,995 INFO L754 eck$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);" [2025-02-08 14:20:25,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash 35716, now seen corresponding path program 1 times [2025-02-08 14:20:25,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:25,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811846925] [2025-02-08 14:20:25,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:25,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:25,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:25,999 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:25,999 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:25,999 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:26,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:26,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:26,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:26,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:26,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash 31872, now seen corresponding path program 1 times [2025-02-08 14:20:26,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:26,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573860958] [2025-02-08 14:20:26,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:26,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:26,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:26,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:26,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:26,005 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:26,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:26,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:26,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:26,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:26,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1064017437, now seen corresponding path program 1 times [2025-02-08 14:20:26,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:26,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814900032] [2025-02-08 14:20:26,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:26,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:26,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:20:26,013 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:26,013 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,013 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:26,013 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:26,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:20:26,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:26,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:26,016 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:26,033 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:26,033 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:26,033 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:26,033 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:26,033 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:26,033 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,033 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:26,033 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:26,033 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2025-02-08 14:20:26,033 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:26,033 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:26,034 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,042 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,048 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,087 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:26,088 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:26,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:26,090 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:26,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-08 14:20:26,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:26,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:26,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2025-02-08 14:20:26,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:26,126 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:26,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-08 14:20:26,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:26,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:26,290 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:26,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:26,297 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:26,299 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:26,299 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:26,299 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:26,299 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:26,299 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,299 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:26,299 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:26,299 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2025-02-08 14:20:26,299 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:26,299 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:26,301 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,308 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,311 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,355 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:26,355 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:26,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:26,357 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:26,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-08 14:20:26,363 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:26,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:26,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:26,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:26,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:26,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:26,376 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:26,376 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:26,378 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:26,383 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-08 14:20:26,383 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-08 14:20:26,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:26,386 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:26,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-08 14:20:26,389 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:26,389 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:26,389 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:26,389 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 [] [2025-02-08 14:20:26,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:26,398 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:26,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:26,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:26,416 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:26,416 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,416 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:26,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:20:26,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:26,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:26,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:26,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:26,423 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:20:26,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:26,442 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-08 14:20:26,442 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 37 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2025-02-08 14:20:26,455 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 37 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 62 states and 91 transitions. Complement of second has 5 states. [2025-02-08 14:20:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:26,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2025-02-08 14:20:26,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2025-02-08 14:20:26,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2025-02-08 14:20:26,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:26,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-08 14:20:26,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:26,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-08 14:20:26,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:26,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 91 transitions. [2025-02-08 14:20:26,459 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2025-02-08 14:20:26,459 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 55 states and 80 transitions. [2025-02-08 14:20:26,459 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2025-02-08 14:20:26,459 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2025-02-08 14:20:26,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 80 transitions. [2025-02-08 14:20:26,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:26,459 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 80 transitions. [2025-02-08 14:20:26,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 80 transitions. [2025-02-08 14:20:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2025-02-08 14:20:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 40 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:26,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 60 transitions. [2025-02-08 14:20:26,466 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 60 transitions. [2025-02-08 14:20:26,466 INFO L432 stractBuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2025-02-08 14:20:26,466 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-08 14:20:26,466 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 60 transitions. [2025-02-08 14:20:26,466 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2025-02-08 14:20:26,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:26,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:26,469 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2025-02-08 14:20:26,469 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-08 14:20:26,469 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" "assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1;" [2025-02-08 14:20:26,469 INFO L754 eck$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;" [2025-02-08 14:20:26,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1064017434, now seen corresponding path program 1 times [2025-02-08 14:20:26,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:26,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318151174] [2025-02-08 14:20:26,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:26,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:26,472 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:20:26,474 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:26,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:20:26,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318151174] [2025-02-08 14:20:26,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318151174] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:20:26,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:20:26,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:20:26,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865159342] [2025-02-08 14:20:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:20:26,512 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-08 14:20:26,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1117, now seen corresponding path program 2 times [2025-02-08 14:20:26,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:26,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792823349] [2025-02-08 14:20:26,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:20:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:26,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:26,516 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:26,516 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:20:26,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:26,516 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:26,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:26,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:26,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:26,522 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:26,560 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:26,560 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:26,560 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:26,560 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:26,560 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:26,560 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,560 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:26,560 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:26,560 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2025-02-08 14:20:26,560 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:26,560 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:26,560 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,570 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,575 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,621 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:26,622 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:26,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:26,623 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:26,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-08 14:20:26,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:26,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:26,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:26,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:26,661 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:26,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-08 14:20:26,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:26,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:26,723 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:26,729 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 [2025-02-08 14:20:26,729 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:26,729 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:26,729 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:26,729 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:26,729 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:26,729 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,729 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:26,729 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:26,729 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2025-02-08 14:20:26,729 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:26,729 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:26,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,736 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,770 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:26,770 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:26,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:26,772 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:26,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-08 14:20:26,774 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:26,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:26,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:26,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:26,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:26,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:26,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:26,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:26,787 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:26,791 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-08 14:20:26,791 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2025-02-08 14:20:26,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:26,793 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:26,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-08 14:20:26,795 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:26,795 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:26,795 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:26,795 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 [] [2025-02-08 14:20:26,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:26,802 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:26,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:26,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:20:26,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:26,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:26,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:20:26,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:26,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-08 14:20:26,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-08 14:20:26,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:26,834 WARN L254 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-08 14:20:26,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:26,848 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-08 14:20:26,848 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 60 transitions. cyclomatic complexity: 29 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) [2025-02-08 14:20:26,870 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 60 transitions. cyclomatic complexity: 29. 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 73 states and 104 transitions. Complement of second has 7 states. [2025-02-08 14:20:26,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:26,871 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) [2025-02-08 14:20:26,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2025-02-08 14:20:26,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-08 14:20:26,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:26,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2025-02-08 14:20:26,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:26,871 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2025-02-08 14:20:26,871 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:26,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 104 transitions. [2025-02-08 14:20:26,873 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2025-02-08 14:20:26,873 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 57 states and 83 transitions. [2025-02-08 14:20:26,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2025-02-08 14:20:26,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2025-02-08 14:20:26,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 83 transitions. [2025-02-08 14:20:26,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:26,874 INFO L218 hiAutomatonCegarLoop]: Abstraction has 57 states and 83 transitions. [2025-02-08 14:20:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 83 transitions. [2025-02-08 14:20:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2025-02-08 14:20:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 41 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 62 transitions. [2025-02-08 14:20:26,876 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 62 transitions. [2025-02-08 14:20:26,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:20:26,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:20:26,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:20:26,878 INFO L87 Difference]: Start difference. First operand 42 states and 62 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2025-02-08 14:20:26,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 14:20:26,891 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2025-02-08 14:20:26,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 68 transitions. [2025-02-08 14:20:26,892 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2025-02-08 14:20:26,892 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 44 states and 61 transitions. [2025-02-08 14:20:26,892 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2025-02-08 14:20:26,892 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2025-02-08 14:20:26,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 61 transitions. [2025-02-08 14:20:26,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:26,892 INFO L218 hiAutomatonCegarLoop]: Abstraction has 44 states and 61 transitions. [2025-02-08 14:20:26,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 61 transitions. [2025-02-08 14:20:26,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2025-02-08 14:20:26,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.425) internal successors, (57), 39 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 57 transitions. [2025-02-08 14:20:26,894 INFO L240 hiAutomatonCegarLoop]: Abstraction has 40 states and 57 transitions. [2025-02-08 14:20:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:20:26,895 INFO L432 stractBuchiCegarLoop]: Abstraction has 40 states and 57 transitions. [2025-02-08 14:20:26,895 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-08 14:20:26,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 57 transitions. [2025-02-08 14:20:26,895 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2025-02-08 14:20:26,895 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:26,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:26,895 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2025-02-08 14:20:26,895 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-08 14:20:26,896 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;" [2025-02-08 14:20:26,896 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;" [2025-02-08 14:20:26,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:26,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1063930915, now seen corresponding path program 1 times [2025-02-08 14:20:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:26,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199725508] [2025-02-08 14:20:26,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:26,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:26,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:20:26,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:26,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:26,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:26,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 14:20:26,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199725508] [2025-02-08 14:20:26,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199725508] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 14:20:26,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 14:20:26,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 14:20:26,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933246226] [2025-02-08 14:20:26,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 14:20:26,935 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-02-08 14:20:26,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash 34723, now seen corresponding path program 2 times [2025-02-08 14:20:26,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:26,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851502619] [2025-02-08 14:20:26,936 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:20:26,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:26,938 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:26,939 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:26,939 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 14:20:26,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:26,939 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:26,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:26,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:26,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:26,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:26,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:26,964 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:26,964 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:26,964 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:26,964 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:26,964 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-08 14:20:26,964 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:26,964 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:26,964 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:26,964 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2025-02-08 14:20:26,964 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:26,964 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:26,965 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,967 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:26,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:27,002 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:27,003 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-08 14:20:27,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:27,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:27,004 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:27,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-08 14:20:27,007 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:27,007 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:27,023 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:27,023 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: [] [2025-02-08 14:20:27,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:27,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:27,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:27,061 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 [2025-02-08 14:20:27,065 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:27,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2025-02-08 14:20:27,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-08 14:20:27,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:27,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:27,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2025-02-08 14:20:27,088 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-08 14:20:27,088 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: [] [2025-02-08 14:20:27,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-08 14:20:27,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:27,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:27,098 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:27,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-02-08 14:20:27,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-08 14:20:27,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:27,118 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 [2025-02-08 14:20:27,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:27,120 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:27,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-02-08 14:20:27,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-08 14:20:27,123 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-08 14:20:27,165 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-08 14:20:27,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-02-08 14:20:27,170 INFO L204 LassoAnalysis]: Preferences: [2025-02-08 14:20:27,170 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-08 14:20:27,173 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-08 14:20:27,173 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-08 14:20:27,173 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-08 14:20:27,173 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:27,173 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-08 14:20:27,173 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-08 14:20:27,174 INFO L132 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2025-02-08 14:20:27,174 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-08 14:20:27,174 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-08 14:20:27,175 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:27,181 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:27,193 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-08 14:20:27,268 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-08 14:20:27,268 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-08 14:20:27,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:27,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:27,274 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:27,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-02-08 14:20:27,276 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:27,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:27,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:27,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:27,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:27,287 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-08 14:20:27,287 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-08 14:20:27,290 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:27,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2025-02-08 14:20:27,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:27,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:27,299 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:27,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-02-08 14:20:27,301 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:27,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:27,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:27,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:27,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:27,313 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-08 14:20:27,313 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-08 14:20:27,316 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-08 14:20:27,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:27,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:27,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:27,324 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-08 14:20:27,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2025-02-08 14:20:27,325 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-08 14:20:27,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-08 14:20:27,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-08 14:20:27,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-08 14:20:27,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-08 14:20:27,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-08 14:20:27,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-08 14:20:27,339 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-08 14:20:27,345 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-08 14:20:27,352 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2025-02-08 14:20:27,352 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2025-02-08 14:20:27,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-08 14:20:27,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 14:20:27,354 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) [2025-02-08 14:20:27,355 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 [2025-02-08 14:20:27,356 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-08 14:20:27,356 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-08 14:20:27,356 INFO L474 LassoAnalysis]: Proved termination. [2025-02-08 14:20:27,356 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 [] [2025-02-08 14:20:27,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2025-02-08 14:20:27,362 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-08 14:20:27,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:27,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:20:27,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:27,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:27,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:27,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-08 14:20:27,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:27,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 14:20:27,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 14:20:27,397 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:27,397 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 14:20:27,397 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-08 14:20:27,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 14:20:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 14:20:27,413 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-08 14:20:27,413 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 57 transitions. cyclomatic complexity: 25 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:27,439 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 57 transitions. cyclomatic complexity: 25. 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 73 states and 101 transitions. Complement of second has 5 states. [2025-02-08 14:20:27,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-08 14:20:27,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2025-02-08 14:20:27,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-08 14:20:27,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:27,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2025-02-08 14:20:27,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:27,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2025-02-08 14:20:27,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-08 14:20:27,440 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 101 transitions. [2025-02-08 14:20:27,441 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2025-02-08 14:20:27,441 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 56 states and 78 transitions. [2025-02-08 14:20:27,441 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2025-02-08 14:20:27,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2025-02-08 14:20:27,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 78 transitions. [2025-02-08 14:20:27,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:27,441 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 78 transitions. [2025-02-08 14:20:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 78 transitions. [2025-02-08 14:20:27,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2025-02-08 14:20:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 47 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 68 transitions. [2025-02-08 14:20:27,444 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 68 transitions. [2025-02-08 14:20:27,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 14:20:27,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 14:20:27,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 14:20:27,444 INFO L87 Difference]: Start difference. First operand 48 states and 68 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2025-02-08 14:20:27,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 14:20:27,454 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2025-02-08 14:20:27,454 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 65 transitions. [2025-02-08 14:20:27,454 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-02-08 14:20:27,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 46 states and 60 transitions. [2025-02-08 14:20:27,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2025-02-08 14:20:27,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2025-02-08 14:20:27,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 60 transitions. [2025-02-08 14:20:27,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-08 14:20:27,455 INFO L218 hiAutomatonCegarLoop]: Abstraction has 46 states and 60 transitions. [2025-02-08 14:20:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 60 transitions. [2025-02-08 14:20:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2025-02-08 14:20:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 14:20:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2025-02-08 14:20:27,458 INFO L240 hiAutomatonCegarLoop]: Abstraction has 34 states and 46 transitions. [2025-02-08 14:20:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 14:20:27,461 INFO L432 stractBuchiCegarLoop]: Abstraction has 34 states and 46 transitions. [2025-02-08 14:20:27,461 INFO L338 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2025-02-08 14:20:27,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 46 transitions. [2025-02-08 14:20:27,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-02-08 14:20:27,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-08 14:20:27,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-08 14:20:27,462 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2025-02-08 14:20:27,462 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1] [2025-02-08 14:20:27,462 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume !(main_~i~0#1 < main_~j~0#1);" "assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1;" "assume main_~i~0#1 > 0 && main_~j~0#1 > 0;" "assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1;" [2025-02-08 14:20:27,462 INFO L754 eck$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;" [2025-02-08 14:20:27,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:27,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1064018395, now seen corresponding path program 2 times [2025-02-08 14:20:27,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:27,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169913367] [2025-02-08 14:20:27,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 14:20:27,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:27,468 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 6 statements into 2 equivalence classes. [2025-02-08 14:20:27,469 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:27,469 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 14:20:27,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:27,469 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:27,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:20:27,472 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:27,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:27,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:27,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:27,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:27,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1928675454, now seen corresponding path program 1 times [2025-02-08 14:20:27,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:27,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061705189] [2025-02-08 14:20:27,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:27,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:27,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:20:27,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:20:27,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:27,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:27,477 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:27,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 14:20:27,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 14:20:27,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:27,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:27,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:27,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 14:20:27,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1668704344, now seen corresponding path program 1 times [2025-02-08 14:20:27,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 14:20:27,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790202603] [2025-02-08 14:20:27,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 14:20:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 14:20:27,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:20:27,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:20:27,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:27,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:27,487 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:27,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 14:20:27,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 14:20:27,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:27,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:27,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 14:20:27,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:20:27,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:27,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:27,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:27,571 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 14:20:27,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 14:20:27,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 14:20:27,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 14:20:27,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 14:20:27,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.02 02:20:27 BoogieIcfgContainer [2025-02-08 14:20:27,588 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-08 14:20:27,588 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 14:20:27,588 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 14:20:27,588 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 14:20:27,589 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 02:20:24" (3/4) ... [2025-02-08 14:20:27,590 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-02-08 14:20:27,612 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 14:20:27,612 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 14:20:27,613 INFO L158 Benchmark]: Toolchain (without parser) took 3400.01ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 79.0MB in the end (delta: 32.4MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2025-02-08 14:20:27,613 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:20:27,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 123.19ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 100.7MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:20:27,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.45ms. Allocated memory is still 142.6MB. Free memory was 100.7MB in the beginning and 99.9MB in the end (delta: 842.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:20:27,613 INFO L158 Benchmark]: Boogie Preprocessor took 12.68ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 99.1MB in the end (delta: 827.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:20:27,613 INFO L158 Benchmark]: IcfgBuilder took 184.46ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 89.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 14:20:27,614 INFO L158 Benchmark]: BuchiAutomizer took 3032.87ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 82.8MB in the end (delta: 6.2MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2025-02-08 14:20:27,614 INFO L158 Benchmark]: Witness Printer took 24.17ms. Allocated memory is still 142.6MB. Free memory was 82.8MB in the beginning and 79.0MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 14:20:27,615 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 123.19ms. Allocated memory is still 142.6MB. Free memory was 110.6MB in the beginning and 100.7MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.45ms. Allocated memory is still 142.6MB. Free memory was 100.7MB in the beginning and 99.9MB in the end (delta: 842.9kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.68ms. Allocated memory is still 142.6MB. Free memory was 99.9MB in the beginning and 99.1MB in the end (delta: 827.2kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 184.46ms. Allocated memory is still 142.6MB. Free memory was 99.1MB in the beginning and 89.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3032.87ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 82.8MB in the end (delta: 6.2MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Witness Printer took 24.17ms. Allocated memory is still 142.6MB. Free memory was 82.8MB in the beginning and 79.0MB in the end (delta: 3.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 34 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.9s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 2.4s. 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, 29 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 29 mSDtfsCounter, 80 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: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s 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! [2025-02-08 14:20:27,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2025-02-08 14:20:27,825 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)