./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2a633be8572429ac13238ea7bd46ff22a6a657dc142a1db237c08b8a68a6d4e8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:59:01,009 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:59:01,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-02-06 18:59:01,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:59:01,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:59:01,063 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-02-06 18:59:01,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:59:01,077 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:59:01,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:59:01,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:59:01,078 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:59:01,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:59:01,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:59:01,078 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:59:01,078 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-06 18:59:01,078 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-06 18:59:01,078 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-06 18:59:01,078 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-06 18:59:01,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:59:01,079 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-06 18:59:01,080 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:59:01,080 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:59:01,080 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:59:01,080 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:59:01,080 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:59:01,080 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:59:01,080 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-06 18:59:01,080 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a633be8572429ac13238ea7bd46ff22a6a657dc142a1db237c08b8a68a6d4e8 [2025-02-06 18:59:01,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:59:01,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:59:01,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:59:01,270 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:59:01,270 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:59:01,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2025-02-06 18:59:02,359 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/22cb9aecb/7a513b3c17274c2b824ae8f5266996d7/FLAG98b0ab2dc [2025-02-06 18:59:02,615 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:59:02,615 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-crafted/Pure2Phase-1.c [2025-02-06 18:59:02,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/22cb9aecb/7a513b3c17274c2b824ae8f5266996d7/FLAG98b0ab2dc [2025-02-06 18:59:02,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/22cb9aecb/7a513b3c17274c2b824ae8f5266996d7 [2025-02-06 18:59:02,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:59:02,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:59:02,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:59:02,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:59:02,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:59:02,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a8cc25d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02, skipping insertion in model container [2025-02-06 18:59:02,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:59:02,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:59:02,754 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:59:02,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:59:02,771 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:59:02,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02 WrapperNode [2025-02-06 18:59:02,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:59:02,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:59:02,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:59:02,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:59:02,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,780 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,789 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2025-02-06 18:59:02,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:59:02,790 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:59:02,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:59:02,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:59:02,795 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,796 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,799 INFO L175 MemorySlicer]: No memory access in input program. [2025-02-06 18:59:02,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,800 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,801 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:59:02,804 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:59:02,804 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:59:02,805 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:59:02,805 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (1/1) ... [2025-02-06 18:59:02,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:02,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:02,839 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:02,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-06 18:59:02,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:59:02,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:59:02,905 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:59:02,907 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:59:02,960 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-02-06 18:59:02,960 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:59:02,965 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:59:02,965 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:59:02,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:59:02 BoogieIcfgContainer [2025-02-06 18:59:02,966 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:59:02,967 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-06 18:59:02,967 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-06 18:59:02,970 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-06 18:59:02,971 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 18:59:02,971 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.02 06:59:02" (1/3) ... [2025-02-06 18:59:02,971 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@681d534b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 06:59:02, skipping insertion in model container [2025-02-06 18:59:02,972 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 18:59:02,972 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:59:02" (2/3) ... [2025-02-06 18:59:02,972 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@681d534b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 06:59:02, skipping insertion in model container [2025-02-06 18:59:02,972 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 18:59:02,972 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:59:02" (3/3) ... [2025-02-06 18:59:02,973 INFO L363 chiAutomizerObserver]: Analyzing ICFG Pure2Phase-1.c [2025-02-06 18:59:03,003 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-06 18:59:03,003 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-06 18:59:03,003 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-06 18:59:03,003 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-06 18:59:03,004 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-06 18:59:03,004 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-06 18:59:03,004 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-06 18:59:03,004 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-06 18:59:03,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:03,015 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-06 18:59:03,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 18:59:03,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 18:59:03,017 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-06 18:59:03,018 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-06 18:59:03,018 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-06 18:59:03,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:03,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-06 18:59:03,018 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 18:59:03,018 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 18:59:03,019 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2025-02-06 18:59:03,019 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-06 18:59:03,023 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~y~0#1, main_~z~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823);" "assume !!(main_~z~0#1 <= 1073741823);" [2025-02-06 18:59:03,023 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume !(main_~y~0#1 >= 0);main_~z~0#1 := main_~z~0#1 - 1;" [2025-02-06 18:59:03,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1415037, now seen corresponding path program 1 times [2025-02-06 18:59:03,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:03,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399114062] [2025-02-06 18:59:03,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:59:03,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:03,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:59:03,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:59:03,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,077 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:03,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:59:03,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:59:03,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,092 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:03,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1216, now seen corresponding path program 1 times [2025-02-06 18:59:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:03,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333327740] [2025-02-06 18:59:03,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:59:03,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:03,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:03,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:03,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,101 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:03,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:03,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:03,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:03,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:03,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1359850812, now seen corresponding path program 1 times [2025-02-06 18:59:03,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:03,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891130681] [2025-02-06 18:59:03,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:59:03,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:03,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:59:03,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:59:03,111 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,111 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:03,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:59:03,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:59:03,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:03,167 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:59:03,167 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:59:03,167 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:59:03,168 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:59:03,168 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 18:59:03,168 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,168 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:59:03,168 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:59:03,168 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2025-02-06 18:59:03,168 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:59:03,168 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:59:03,178 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,188 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,191 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,194 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,245 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:59:03,246 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 18:59:03,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-06 18:59:03,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:03,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:03,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:03,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-06 18:59:03,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 18:59:03,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:03,296 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 18:59:03,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:03,300 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:59:03,300 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:59:03,300 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:59:03,300 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:59:03,300 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 18:59:03,300 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,301 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:59:03,301 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:59:03,301 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration1_Loop [2025-02-06 18:59:03,301 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:59:03,301 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:59:03,302 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,309 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,311 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,314 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,359 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:59:03,362 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 18:59:03,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-06 18:59:03,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:03,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:03,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 18:59:03,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:03,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:03,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:03,386 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 18:59:03,386 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 18:59:03,389 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 18:59:03,394 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 18:59:03,396 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-06 18:59:03,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,399 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-06 18:59:03,405 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 18:59:03,405 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 18:59:03,406 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 18:59:03,407 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 2*ULTIMATE.start_main_~z~0#1 + 1 Supporting invariants [] [2025-02-06 18:59:03,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:03,415 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 18:59:03,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:03,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-06 18:59:03,452 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-06 18:59:03,452 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,453 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:03,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 18:59:03,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:03,468 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:03,469 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:03,469 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:03,470 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:59:03,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:59:03,515 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-06 18:59:03,517 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 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) [2025-02-06 18:59:03,556 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 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 18 states and 25 transitions. Complement of second has 5 states. [2025-02-06 18:59:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-06 18:59:03,562 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) [2025-02-06 18:59:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2025-02-06 18:59:03,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2025-02-06 18:59:03,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:03,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2025-02-06 18:59:03,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:03,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 4 letters. [2025-02-06 18:59:03,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:03,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 25 transitions. [2025-02-06 18:59:03,574 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-06 18:59:03,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 11 states and 14 transitions. [2025-02-06 18:59:03,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2025-02-06 18:59:03,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2025-02-06 18:59:03,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2025-02-06 18:59:03,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 18:59:03,582 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2025-02-06 18:59:03,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2025-02-06 18:59:03,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2025-02-06 18:59:03,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:03,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2025-02-06 18:59:03,601 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2025-02-06 18:59:03,601 INFO L432 stractBuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2025-02-06 18:59:03,601 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-06 18:59:03,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2025-02-06 18:59:03,602 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2025-02-06 18:59:03,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 18:59:03,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 18:59:03,602 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2025-02-06 18:59:03,602 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2025-02-06 18:59:03,602 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~y~0#1, main_~z~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823);" "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" [2025-02-06 18:59:03,602 INFO L754 eck$LassoCheckResult]: Loop: "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" [2025-02-06 18:59:03,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1359850811, now seen corresponding path program 1 times [2025-02-06 18:59:03,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:03,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744260249] [2025-02-06 18:59:03,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:59:03,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:03,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:59:03,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:59:03,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,610 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:03,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:59:03,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:59:03,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,615 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:03,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:03,616 INFO L85 PathProgramCache]: Analyzing trace with hash 34850, now seen corresponding path program 1 times [2025-02-06 18:59:03,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:03,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975102974] [2025-02-06 18:59:03,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:59:03,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:03,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:59:03,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:59:03,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,620 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:03,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:59:03,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:59:03,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:03,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1183979688, now seen corresponding path program 1 times [2025-02-06 18:59:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:03,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427443796] [2025-02-06 18:59:03,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:59:03,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:03,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:59:03,628 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:59:03,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,629 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:03,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:59:03,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:59:03,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:03,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:03,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:03,655 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:59:03,655 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:59:03,656 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:59:03,656 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:59:03,656 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 18:59:03,656 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,656 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:59:03,656 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:59:03,656 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2025-02-06 18:59:03,656 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:59:03,656 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:59:03,658 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,668 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,670 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,678 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,738 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:59:03,738 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 18:59:03,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,742 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:03,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:03,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-06 18:59:03,768 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 18:59:03,768 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 18:59:03,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-06 18:59:03,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,781 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-06 18:59:03,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:03,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:03,802 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 18:59:03,803 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 18:59:03,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-06 18:59:03,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,812 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-06 18:59:03,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:03,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:03,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:03,845 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 18:59:03,845 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 18:59:03,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-02-06 18:59:03,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,856 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-02-06 18:59:03,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:03,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:03,874 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 18:59:03,874 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~z~0#1=0} Honda state: {ULTIMATE.start_main_~z~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 18:59:03,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:03,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,885 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-02-06 18:59:03,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:03,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:03,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:03,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:03,907 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:03,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-02-06 18:59:03,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 18:59:03,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:03,953 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 18:59:03,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2025-02-06 18:59:03,958 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:59:03,958 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:59:03,958 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:59:03,958 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:59:03,958 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 18:59:03,958 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:03,958 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:59:03,958 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:59:03,958 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration2_Loop [2025-02-06 18:59:03,958 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:59:03,958 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:59:03,960 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,964 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:03,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,018 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:59:04,018 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 18:59:04,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,020 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-02-06 18:59:04,022 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:04,032 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:04,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:04,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:04,033 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:04,036 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 18:59:04,036 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 18:59:04,039 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 18:59:04,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2025-02-06 18:59:04,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-02-06 18:59:04,052 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:04,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:04,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:04,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:04,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:04,064 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 18:59:04,064 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 18:59:04,067 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 18:59:04,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2025-02-06 18:59:04,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,076 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-02-06 18:59:04,081 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:04,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:04,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 18:59:04,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:04,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:04,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:04,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 18:59:04,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 18:59:04,094 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 18:59:04,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,102 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-02-06 18:59:04,104 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:04,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:04,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 18:59:04,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:04,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:04,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:04,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 18:59:04,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 18:59:04,116 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 18:59:04,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-02-06 18:59:04,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,124 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2025-02-06 18:59:04,127 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:04,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:04,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 18:59:04,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:04,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:04,137 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:04,138 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 18:59:04,138 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 18:59:04,140 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 18:59:04,142 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-02-06 18:59:04,142 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-06 18:59:04,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,145 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2025-02-06 18:59:04,147 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 18:59:04,147 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 18:59:04,147 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 18:59:04,147 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2025-02-06 18:59:04,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,154 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 18:59:04,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 18:59:04,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 18:59:04,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:04,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 18:59:04,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:04,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 18:59:04,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 18:59:04,179 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:04,180 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:59:04,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:59:04,198 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-06 18:59:04,198 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:04,211 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 14 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 21 transitions. Complement of second has 6 states. [2025-02-06 18:59:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2025-02-06 18:59:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2025-02-06 18:59:04,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2025-02-06 18:59:04,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:04,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2025-02-06 18:59:04,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:04,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 6 letters. [2025-02-06 18:59:04,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:04,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 21 transitions. [2025-02-06 18:59:04,213 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-02-06 18:59:04,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 21 transitions. [2025-02-06 18:59:04,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2025-02-06 18:59:04,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2025-02-06 18:59:04,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 21 transitions. [2025-02-06 18:59:04,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 18:59:04,214 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 21 transitions. [2025-02-06 18:59:04,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 21 transitions. [2025-02-06 18:59:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2025-02-06 18:59:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:04,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2025-02-06 18:59:04,215 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 19 transitions. [2025-02-06 18:59:04,215 INFO L432 stractBuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2025-02-06 18:59:04,215 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-02-06 18:59:04,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 19 transitions. [2025-02-06 18:59:04,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-02-06 18:59:04,215 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 18:59:04,215 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 18:59:04,215 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:59:04,215 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-06 18:59:04,215 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~y~0#1, main_~z~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823);" "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume !!(main_~z~0#1 <= 1073741823);" [2025-02-06 18:59:04,215 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume !(main_~y~0#1 >= 0);main_~z~0#1 := main_~z~0#1 - 1;" [2025-02-06 18:59:04,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,216 INFO L85 PathProgramCache]: Analyzing trace with hash -794297814, now seen corresponding path program 2 times [2025-02-06 18:59:04,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:04,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797817272] [2025-02-06 18:59:04,216 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:59:04,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:04,219 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:59:04,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:59:04,220 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:59:04,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,220 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:04,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:59:04,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:59:04,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:04,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1216, now seen corresponding path program 2 times [2025-02-06 18:59:04,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:04,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101912278] [2025-02-06 18:59:04,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:59:04,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:04,225 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:04,226 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:04,226 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 18:59:04,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,226 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:04,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:04,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:04,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:04,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1183979689, now seen corresponding path program 1 times [2025-02-06 18:59:04,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:04,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817548684] [2025-02-06 18:59:04,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:59:04,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:04,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:59:04,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:59:04,232 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,232 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,232 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:04,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:59:04,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:59:04,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:04,255 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:59:04,256 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:59:04,256 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:59:04,256 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:59:04,256 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 18:59:04,256 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,256 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:59:04,256 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:59:04,256 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2025-02-06 18:59:04,256 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:59:04,256 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:59:04,257 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,259 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,266 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,272 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,306 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:59:04,306 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 18:59:04,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,311 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2025-02-06 18:59:04,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:04,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:04,332 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 18:59:04,332 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 18:59:04,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2025-02-06 18:59:04,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,340 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2025-02-06 18:59:04,343 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:04,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:04,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,362 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2025-02-06 18:59:04,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 18:59:04,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:04,393 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 18:59:04,393 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-8} Honda state: {ULTIMATE.start_main_~y~0#1=-8} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=-1}, {ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=0}] Lambdas: [1, 4, 2] Nus: [0, 1] [2025-02-06 18:59:04,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,403 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2025-02-06 18:59:04,405 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:04,405 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:04,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,423 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2025-02-06 18:59:04,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 18:59:04,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:04,447 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 18:59:04,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,451 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:59:04,451 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:59:04,451 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:59:04,451 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:59:04,451 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 18:59:04,451 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,451 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:59:04,451 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:59:04,451 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration3_Loop [2025-02-06 18:59:04,451 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:59:04,451 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:59:04,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,458 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,465 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,501 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:59:04,501 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 18:59:04,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,504 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2025-02-06 18:59:04,507 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:04,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:04,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 18:59:04,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:04,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:04,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:04,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 18:59:04,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 18:59:04,521 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 18:59:04,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,528 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2025-02-06 18:59:04,530 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:04,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:04,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:04,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:04,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:04,542 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2025-02-06 18:59:04,542 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2025-02-06 18:59:04,545 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 18:59:04,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,552 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2025-02-06 18:59:04,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:04,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:04,565 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 18:59:04,565 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:04,565 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:04,565 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:04,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 18:59:04,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 18:59:04,567 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 18:59:04,569 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 18:59:04,569 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-06 18:59:04,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,572 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2025-02-06 18:59:04,574 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 18:59:04,574 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 18:59:04,574 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 18:59:04,574 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 2*ULTIMATE.start_main_~z~0#1 + 1 Supporting invariants [] [2025-02-06 18:59:04,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,581 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 18:59:04,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 18:59:04,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 18:59:04,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:04,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 18:59:04,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:04,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:04,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:04,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:04,605 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:59:04,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:59:04,616 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-06 18:59:04,616 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 19 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:04,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 19 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 5 states. [2025-02-06 18:59:04,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-06 18:59:04,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:04,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2025-02-06 18:59:04,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2025-02-06 18:59:04,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:04,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2025-02-06 18:59:04,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:04,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2025-02-06 18:59:04,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:04,629 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2025-02-06 18:59:04,630 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-02-06 18:59:04,630 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 17 states and 22 transitions. [2025-02-06 18:59:04,630 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2025-02-06 18:59:04,630 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2025-02-06 18:59:04,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2025-02-06 18:59:04,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-02-06 18:59:04,631 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2025-02-06 18:59:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2025-02-06 18:59:04,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-02-06 18:59:04,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2025-02-06 18:59:04,632 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 22 transitions. [2025-02-06 18:59:04,632 INFO L432 stractBuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2025-02-06 18:59:04,632 INFO L338 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2025-02-06 18:59:04,632 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 22 transitions. [2025-02-06 18:59:04,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2025-02-06 18:59:04,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 18:59:04,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 18:59:04,633 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2025-02-06 18:59:04,633 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2025-02-06 18:59:04,633 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~y~0#1, main_~z~0#1;havoc main_~y~0#1;havoc main_~z~0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume !!(-1073741823 <= main_~y~0#1 && main_~y~0#1 <= 1073741823);" "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume !!(main_~z~0#1 <= 1073741823);" "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume main_~y~0#1 >= 0;havoc main_#t~nondet2#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;" "assume !!(main_~z~0#1 <= 1073741823);" [2025-02-06 18:59:04,633 INFO L754 eck$LassoCheckResult]: Loop: "assume main_~z~0#1 >= 0;main_~y~0#1 := main_~y~0#1 - 1;" "assume !(main_~y~0#1 >= 0);main_~z~0#1 := main_~z~0#1 - 1;" [2025-02-06 18:59:04,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1951335331, now seen corresponding path program 3 times [2025-02-06 18:59:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:04,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035006208] [2025-02-06 18:59:04,633 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:59:04,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:04,636 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 10 statements into 2 equivalence classes. [2025-02-06 18:59:04,639 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:59:04,639 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 18:59:04,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,639 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:04,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:59:04,642 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:59:04,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:04,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1216, now seen corresponding path program 3 times [2025-02-06 18:59:04,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:04,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821505031] [2025-02-06 18:59:04,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 18:59:04,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:04,645 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:04,646 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:04,646 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 18:59:04,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,646 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:04,646 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:04,647 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:04,647 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:04,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1667455516, now seen corresponding path program 2 times [2025-02-06 18:59:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:59:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234852719] [2025-02-06 18:59:04,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 18:59:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:59:04,651 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 12 statements into 2 equivalence classes. [2025-02-06 18:59:04,653 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:59:04,653 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 18:59:04,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,653 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 18:59:04,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:59:04,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:59:04,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 18:59:04,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 18:59:04,676 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:59:04,676 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:59:04,676 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:59:04,676 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:59:04,677 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 18:59:04,677 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,677 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:59:04,677 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:59:04,677 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2025-02-06 18:59:04,677 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:59:04,677 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:59:04,677 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,681 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,684 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,688 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,719 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:59:04,720 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 18:59:04,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,723 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2025-02-06 18:59:04,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 18:59:04,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:04,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,750 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2025-02-06 18:59:04,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 18:59:04,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 18:59:04,774 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 18:59:04,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2025-02-06 18:59:04,779 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 18:59:04,779 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 18:59:04,779 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 18:59:04,779 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 18:59:04,779 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 18:59:04,779 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,779 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 18:59:04,779 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 18:59:04,779 INFO L132 ssoRankerPreferences]: Filename of dumped script: Pure2Phase-1.c_Iteration4_Loop [2025-02-06 18:59:04,779 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 18:59:04,779 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 18:59:04,779 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,793 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,805 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,807 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 18:59:04,841 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 18:59:04,841 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 18:59:04,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,843 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2025-02-06 18:59:04,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 18:59:04,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 18:59:04,855 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 18:59:04,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 18:59:04,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 18:59:04,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 18:59:04,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 18:59:04,856 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 18:59:04,858 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 18:59:04,860 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2025-02-06 18:59:04,860 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-06 18:59:04,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 18:59:04,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:59:04,863 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 18:59:04,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2025-02-06 18:59:04,868 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 18:59:04,868 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 18:59:04,868 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 18:59:04,868 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 2*ULTIMATE.start_main_~z~0#1 + 1 Supporting invariants [] [2025-02-06 18:59:04,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2025-02-06 18:59:04,876 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 18:59:04,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,899 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:59:04,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:59:04,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:04,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 18:59:04,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:04,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:04,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:04,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:04,920 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:59:04,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:59:04,939 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-06 18:59:04,939 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:04,954 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 19 states and 24 transitions. Complement of second has 5 states. [2025-02-06 18:59:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-06 18:59:04,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2025-02-06 18:59:04,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 2 letters. [2025-02-06 18:59:04,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:04,955 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-06 18:59:04,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:04,966 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:59:04,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:59:04,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:04,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 18:59:04,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:04,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:04,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:04,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:04,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:04,980 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:59:04,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:59:04,991 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-06 18:59:04,991 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:05,002 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 19 states and 24 transitions. Complement of second has 5 states. [2025-02-06 18:59:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-06 18:59:05,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2025-02-06 18:59:05,003 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 2 letters. [2025-02-06 18:59:05,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:05,003 INFO L689 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2025-02-06 18:59:05,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:59:05,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:59:05,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:59:05,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:05,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:05,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-06 18:59:05,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:05,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2025-02-06 18:59:05,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2025-02-06 18:59:05,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2 statements into 1 equivalence classes. [2025-02-06 18:59:05,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2 of 2 statements. [2025-02-06 18:59:05,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:59:05,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:59:05,050 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 [2025-02-06 18:59:05,051 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 18:59:05,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 18:59:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:59:05,061 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2025-02-06 18:59:05,062 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:05,073 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 22 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 22 states and 28 transitions. Complement of second has 4 states. [2025-02-06 18:59:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2025-02-06 18:59:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 18:59:05,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2025-02-06 18:59:05,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 10 letters. Loop has 2 letters. [2025-02-06 18:59:05,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:05,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 12 letters. Loop has 2 letters. [2025-02-06 18:59:05,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:05,075 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 10 letters. Loop has 4 letters. [2025-02-06 18:59:05,075 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 18:59:05,075 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2025-02-06 18:59:05,076 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 18:59:05,076 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2025-02-06 18:59:05,077 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-06 18:59:05,077 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-06 18:59:05,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-06 18:59:05,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 18:59:05,077 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 18:59:05,077 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 18:59:05,077 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 18:59:05,077 INFO L338 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2025-02-06 18:59:05,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-06 18:59:05,077 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 18:59:05,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-06 18:59:05,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.02 06:59:05 BoogieIcfgContainer [2025-02-06 18:59:05,084 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-06 18:59:05,085 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 18:59:05,085 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 18:59:05,085 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 18:59:05,086 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:59:02" (3/4) ... [2025-02-06 18:59:05,091 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 18:59:05,092 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 18:59:05,092 INFO L158 Benchmark]: Toolchain (without parser) took 2453.91ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 100.7MB in the end (delta: 5.5MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2025-02-06 18:59:05,092 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory was 126.5MB in the beginning and 126.2MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:59:05,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 132.89ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 95.4MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 18:59:05,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.35ms. Allocated memory is still 142.6MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:59:05,093 INFO L158 Benchmark]: Boogie Preprocessor took 13.87ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 94.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:59:05,093 INFO L158 Benchmark]: IcfgBuilder took 161.49ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 84.2MB in the end (delta: 10.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 18:59:05,093 INFO L158 Benchmark]: BuchiAutomizer took 2117.61ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 101.5MB in the end (delta: -17.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:59:05,093 INFO L158 Benchmark]: Witness Printer took 6.84ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 100.7MB in the end (delta: 37.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 18:59:05,094 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory was 126.5MB in the beginning and 126.2MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 132.89ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 95.4MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.35ms. Allocated memory is still 142.6MB. Free memory is still 95.4MB. There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.87ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 94.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 161.49ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 84.2MB in the end (delta: 10.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 2117.61ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 101.5MB in the end (delta: -17.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.84ms. Allocated memory is still 142.6MB. Free memory was 100.8MB in the beginning and 100.7MB in the end (delta: 37.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (((long) 2 * z) + 1) and consists of 3 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function (((long) 2 * z) + 1) and consists of 3 locations. One nondeterministic module has affine ranking function (((long) 2 * z) + 1) and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 53 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-06 18:59:05,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE