./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 02:04:57,582 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 02:04:57,646 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-23 02:04:57,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 02:04:57,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 02:04:57,675 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 02:04:57,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 02:04:57,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 02:04:57,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 02:04:57,677 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 02:04:57,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 02:04:57,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 02:04:57,677 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 02:04:57,678 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-23 02:04:57,678 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-23 02:04:57,678 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-23 02:04:57,678 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-23 02:04:57,679 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-23 02:04:57,682 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-23 02:04:57,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 02:04:57,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-23 02:04:57,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 02:04:57,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 02:04:57,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-23 02:04:57,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-23 02:04:57,684 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-23 02:04:57,684 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 02:04:57,684 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 02:04:57,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 02:04:57,685 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-23 02:04:57,685 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 02:04:57,685 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 02:04:57,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 02:04:57,686 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 02:04:57,686 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 02:04:57,687 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-23 02:04:57,687 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5c626d5135dc189cbc332c41f07b76804a58f47ee910790099695b0d83f1587 [2024-11-23 02:04:57,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 02:04:57,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 02:04:57,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 02:04:57,936 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 02:04:57,937 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 02:04:57,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2024-11-23 02:04:59,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 02:04:59,369 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 02:04:59,371 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1c.c [2024-11-23 02:04:59,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f71810fa1/9106fb3804c1477fafb65c052ba6d24e/FLAG0507716f0 [2024-11-23 02:04:59,769 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f71810fa1/9106fb3804c1477fafb65c052ba6d24e [2024-11-23 02:04:59,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 02:04:59,772 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 02:04:59,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 02:04:59,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 02:04:59,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 02:04:59,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:04:59,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ad63c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59, skipping insertion in model container [2024-11-23 02:04:59,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:04:59,795 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 02:04:59,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:04:59,942 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 02:04:59,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 02:04:59,969 INFO L204 MainTranslator]: Completed translation [2024-11-23 02:04:59,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59 WrapperNode [2024-11-23 02:04:59,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 02:04:59,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 02:04:59,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 02:04:59,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 02:04:59,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:04:59,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:04:59,993 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7 [2024-11-23 02:04:59,994 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 02:04:59,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 02:04:59,995 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 02:04:59,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 02:05:00,004 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,011 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-23 02:05:00,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 02:05:00,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 02:05:00,026 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 02:05:00,026 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 02:05:00,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (1/1) ... [2024-11-23 02:05:00,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:00,062 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:00,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-23 02:05:00,101 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2024-11-23 02:05:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2024-11-23 02:05:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2024-11-23 02:05:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2024-11-23 02:05:00,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 02:05:00,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 02:05:00,148 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 02:05:00,150 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 02:05:00,242 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-23 02:05:00,243 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 02:05:00,254 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 02:05:00,254 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 02:05:00,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:00 BoogieIcfgContainer [2024-11-23 02:05:00,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 02:05:00,255 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-23 02:05:00,255 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-23 02:05:00,258 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-23 02:05:00,258 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:05:00,259 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:04:59" (1/3) ... [2024-11-23 02:05:00,259 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a63ac18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:05:00, skipping insertion in model container [2024-11-23 02:05:00,259 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:05:00,259 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:04:59" (2/3) ... [2024-11-23 02:05:00,260 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a63ac18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:05:00, skipping insertion in model container [2024-11-23 02:05:00,260 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-23 02:05:00,260 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:00" (3/3) ... [2024-11-23 02:05:00,261 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1c.c [2024-11-23 02:05:00,303 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-23 02:05:00,304 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-23 02:05:00,304 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-23 02:05:00,304 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-23 02:05:00,304 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-23 02:05:00,304 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-23 02:05:00,304 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-23 02:05:00,304 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-23 02:05:00,307 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-23 02:05:00,322 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-23 02:05:00,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:05:00,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:05:00,327 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:05:00,327 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-23 02:05:00,327 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-23 02:05:00,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-23 02:05:00,330 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-11-23 02:05:00,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:05:00,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:05:00,330 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-23 02:05:00,330 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-23 02:05:00,336 INFO L745 eck$LassoCheckResult]: Stem: 21#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 10#L25true call main_#t~ret6#1 := rec2(main_~x~0#1);< 7#$Ultimate##0true [2024-11-23 02:05:00,336 INFO L747 eck$LassoCheckResult]: Loop: 7#$Ultimate##0true ~j := #in~j; 17#L18true assume !(~j <= 0); 20#L20true call #t~ret3 := rec2(~j - 1);< 7#$Ultimate##0true [2024-11-23 02:05:00,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:00,340 INFO L85 PathProgramCache]: Analyzing trace with hash 48738, now seen corresponding path program 1 times [2024-11-23 02:05:00,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:00,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647193038] [2024-11-23 02:05:00,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:00,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:00,418 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:00,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:00,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash 39868, now seen corresponding path program 1 times [2024-11-23 02:05:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:00,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277671109] [2024-11-23 02:05:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:00,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:00,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:00,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:00,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:00,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1451963835, now seen corresponding path program 1 times [2024-11-23 02:05:00,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:00,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413156647] [2024-11-23 02:05:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:00,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:00,483 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:00,490 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:00,575 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:00,576 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:00,576 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:00,576 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:00,576 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:05:00,577 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,577 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:00,577 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:00,577 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration1_Loop [2024-11-23 02:05:00,577 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:00,577 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:00,591 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,599 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,603 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,618 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,625 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,679 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:00,680 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:05:00,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:00,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:00,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-23 02:05:00,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:00,691 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:00,707 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:00,708 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_~j=0} Honda state: {rec2_~j=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:00,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-23 02:05:00,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:00,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:00,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-23 02:05:00,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:00,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:00,733 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:00,734 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:00,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-23 02:05:00,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:00,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:00,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-23 02:05:00,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:00,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:00,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-23 02:05:00,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:00,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:00,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-23 02:05:00,773 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:05:00,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:00,819 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:05:00,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:00,825 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:00,825 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:00,825 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:00,825 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:00,825 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:05:00,825 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,825 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:00,826 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:00,826 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration1_Loop [2024-11-23 02:05:00,826 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:00,826 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:00,827 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,832 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,835 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,846 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:00,876 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:00,880 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:05:00,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:00,884 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:00,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-23 02:05:00,888 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 [2024-11-23 02:05:00,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:00,899 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:00,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:00,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:00,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:00,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:00,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:00,904 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:00,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-23 02:05:00,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:00,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:00,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-23 02:05:00,914 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 [2024-11-23 02:05:00,925 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:00,925 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:00,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:00,925 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:00,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:00,926 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:00,926 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:00,931 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:00,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:00,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:00,941 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:00,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-23 02:05:00,946 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 [2024-11-23 02:05:00,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:00,957 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:00,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:00,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:00,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:00,958 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:00,958 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:00,960 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:05:00,963 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-23 02:05:00,963 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-23 02:05:00,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:00,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:00,985 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:00,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-23 02:05:00,988 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:05:00,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:05:00,988 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:05:00,989 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2024-11-23 02:05:00,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:00,998 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:05:01,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:01,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 02:05:01,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:01,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:05:01,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:01,124 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-23 02:05:01,136 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:01,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-23 02:05:01,256 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6). Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 37 states and 45 transitions. Complement of second has 16 states. [2024-11-23 02:05:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-23 02:05:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 02:05:01,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2024-11-23 02:05:01,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 3 letters. [2024-11-23 02:05:01,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:01,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 6 letters. Loop has 3 letters. [2024-11-23 02:05:01,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:01,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 8 transitions. Stem has 3 letters. Loop has 6 letters. [2024-11-23 02:05:01,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:01,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 45 transitions. [2024-11-23 02:05:01,269 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:05:01,273 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 24 states and 31 transitions. [2024-11-23 02:05:01,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2024-11-23 02:05:01,274 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2024-11-23 02:05:01,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 31 transitions. [2024-11-23 02:05:01,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:05:01,275 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-11-23 02:05:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 31 transitions. [2024-11-23 02:05:01,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-11-23 02:05:01,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-23 02:05:01,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-23 02:05:01,295 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-23 02:05:01,295 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-23 02:05:01,295 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-23 02:05:01,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 25 transitions. [2024-11-23 02:05:01,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:05:01,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:05:01,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:05:01,296 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:05:01,296 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-23 02:05:01,297 INFO L745 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 133#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 118#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 126#$Ultimate##0 ~j := #in~j; 127#L18 assume !(~j <= 0); 117#L20 call #t~ret3 := rec2(~j - 1);< 128#$Ultimate##0 ~j := #in~j; 129#L18 assume ~j <= 0;#res := 0; 124#rec2FINAL assume true; 125#rec2EXIT >#34#return; 116#L20-1 call #t~ret4 := rec1(#t~ret3);< 119#$Ultimate##0 [2024-11-23 02:05:01,297 INFO L747 eck$LassoCheckResult]: Loop: 119#$Ultimate##0 ~i := #in~i; 123#L12 assume !(~i <= 0); 122#L14 call #t~ret0 := rec1(~i - 2);< 119#$Ultimate##0 [2024-11-23 02:05:01,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:01,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1193590059, now seen corresponding path program 1 times [2024-11-23 02:05:01,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:01,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462026430] [2024-11-23 02:05:01,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:01,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:01,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:01,318 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:01,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:01,319 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 1 times [2024-11-23 02:05:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:01,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610003366] [2024-11-23 02:05:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:01,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:01,326 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:01,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:01,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:01,331 INFO L85 PathProgramCache]: Analyzing trace with hash -207203934, now seen corresponding path program 1 times [2024-11-23 02:05:01,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:01,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733227520] [2024-11-23 02:05:01,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:01,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 02:05:01,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:05:01,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733227520] [2024-11-23 02:05:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733227520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:05:01,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:05:01,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 02:05:01,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667277855] [2024-11-23 02:05:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:05:01,474 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:01,474 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:01,474 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:01,475 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:01,475 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:05:01,475 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:01,475 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:01,475 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:01,475 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration2_Loop [2024-11-23 02:05:01,475 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:01,475 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:01,476 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,478 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,484 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,486 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,488 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,514 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:01,515 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:05:01,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:01,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:01,517 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:01,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-23 02:05:01,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:01,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:01,532 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:01,532 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:01,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-23 02:05:01,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:01,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:01,544 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:01,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-23 02:05:01,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:01,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:01,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-23 02:05:01,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:01,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:01,570 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:01,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-23 02:05:01,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:05:01,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:01,616 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:05:01,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-23 02:05:01,620 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:01,620 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:01,620 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:01,621 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:01,621 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:05:01,621 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:01,621 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:01,621 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:01,621 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration2_Loop [2024-11-23 02:05:01,621 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:01,621 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:01,622 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,628 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,630 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,633 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,638 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:01,665 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:01,665 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:05:01,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:01,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:01,668 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:01,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-23 02:05:01,671 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 [2024-11-23 02:05:01,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:01,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:01,682 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:01,682 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:01,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:01,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:01,683 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:01,684 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:05:01,686 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-23 02:05:01,686 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-23 02:05:01,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:01,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:01,688 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:01,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-23 02:05:01,690 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:05:01,690 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:05:01,690 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:05:01,690 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-11-23 02:05:01,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:01,697 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:05:01,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:01,740 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 02:05:01,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:01,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:05:01,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:01,849 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-23 02:05:01,849 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 25 transitions. cyclomatic complexity: 7 Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:05:01,921 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 25 transitions. cyclomatic complexity: 7. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 44 states and 59 transitions. Complement of second has 18 states. [2024-11-23 02:05:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-23 02:05:01,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:05:01,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 15 transitions. [2024-11-23 02:05:01,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 15 transitions. Stem has 11 letters. Loop has 3 letters. [2024-11-23 02:05:01,925 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:01,925 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 15 transitions. Stem has 14 letters. Loop has 3 letters. [2024-11-23 02:05:01,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:01,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 15 transitions. Stem has 11 letters. Loop has 6 letters. [2024-11-23 02:05:01,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:01,926 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 59 transitions. [2024-11-23 02:05:01,929 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:05:01,931 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 38 states and 51 transitions. [2024-11-23 02:05:01,931 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-11-23 02:05:01,931 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2024-11-23 02:05:01,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 51 transitions. [2024-11-23 02:05:01,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:05:01,931 INFO L218 hiAutomatonCegarLoop]: Abstraction has 38 states and 51 transitions. [2024-11-23 02:05:01,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 51 transitions. [2024-11-23 02:05:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2024-11-23 02:05:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-23 02:05:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2024-11-23 02:05:01,941 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 47 transitions. [2024-11-23 02:05:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:05:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 02:05:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 02:05:01,944 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-23 02:05:01,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:05:01,973 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2024-11-23 02:05:01,973 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2024-11-23 02:05:01,974 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:05:01,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 30 states and 36 transitions. [2024-11-23 02:05:01,975 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2024-11-23 02:05:01,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2024-11-23 02:05:01,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2024-11-23 02:05:01,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:05:01,976 INFO L218 hiAutomatonCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-23 02:05:01,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2024-11-23 02:05:01,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-23 02:05:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-23 02:05:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-23 02:05:01,978 INFO L240 hiAutomatonCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-23 02:05:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 02:05:01,979 INFO L425 stractBuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-23 02:05:01,979 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-23 02:05:01,979 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2024-11-23 02:05:01,980 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:05:01,980 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-23 02:05:01,980 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-23 02:05:01,980 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 02:05:01,980 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-23 02:05:01,981 INFO L745 eck$LassoCheckResult]: Stem: 363#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 359#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 343#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 346#$Ultimate##0 ~j := #in~j; 347#L18 assume !(~j <= 0); 338#L20 call #t~ret3 := rec2(~j - 1);< 348#$Ultimate##0 ~j := #in~j; 350#L18 assume !(~j <= 0); 339#L20 call #t~ret3 := rec2(~j - 1);< 348#$Ultimate##0 ~j := #in~j; 349#L18 assume ~j <= 0;#res := 0; 362#rec2FINAL assume true; 345#rec2EXIT >#34#return; 337#L20-1 call #t~ret4 := rec1(#t~ret3);< 340#$Ultimate##0 ~i := #in~i; 341#L12 assume ~i <= 0;#res := 0; 360#rec1FINAL assume true; 361#rec1EXIT >#36#return; 351#L20-2 #res := #t~ret4 - 1;havoc #t~ret3;havoc #t~ret4; 342#rec2FINAL assume true; 344#rec2EXIT >#34#return; 355#L20-1 call #t~ret4 := rec1(#t~ret3);< 358#$Ultimate##0 [2024-11-23 02:05:01,981 INFO L747 eck$LassoCheckResult]: Loop: 358#$Ultimate##0 ~i := #in~i; 365#L12 assume !(~i <= 0); 353#L14 call #t~ret0 := rec1(~i - 2);< 358#$Ultimate##0 [2024-11-23 02:05:01,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:01,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1665524430, now seen corresponding path program 1 times [2024-11-23 02:05:01,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:01,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928820377] [2024-11-23 02:05:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:02,001 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:02,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:02,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:02,015 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 2 times [2024-11-23 02:05:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:02,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627975542] [2024-11-23 02:05:02,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 02:05:02,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:02,019 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 02:05:02,019 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-23 02:05:02,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-23 02:05:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-23 02:05:02,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-23 02:05:02,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:02,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2118876407, now seen corresponding path program 1 times [2024-11-23 02:05:02,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 02:05:02,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946396658] [2024-11-23 02:05:02,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 02:05:02,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 02:05:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 02:05:02,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 02:05:02,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946396658] [2024-11-23 02:05:02,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946396658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 02:05:02,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 02:05:02,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-23 02:05:02,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402008769] [2024-11-23 02:05:02,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 02:05:02,148 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:02,148 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:02,148 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:02,148 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:02,148 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-23 02:05:02,148 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,148 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:02,148 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:02,148 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration3_Loop [2024-11-23 02:05:02,149 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:02,149 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:02,149 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,151 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,152 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,154 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,156 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,157 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,189 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:02,190 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-23 02:05:02,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-23 02:05:02,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:02,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:02,206 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:02,206 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:02,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:02,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,213 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-23 02:05:02,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:02,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:02,225 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:02,225 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:02,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-23 02:05:02,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,233 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-23 02:05:02,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:02,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:02,245 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:02,246 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:02,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-23 02:05:02,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,253 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-23 02:05:02,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:02,255 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:02,267 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:02,267 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:02,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:02,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,275 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-23 02:05:02,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:02,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:02,289 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-23 02:05:02,290 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-23 02:05:02,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:02,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,297 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-23 02:05:02,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-23 02:05:02,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:02,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-23 02:05:02,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,317 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-23 02:05:02,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-23 02:05:02,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-23 02:05:02,362 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-23 02:05:02,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-23 02:05:02,368 INFO L204 LassoAnalysis]: Preferences: [2024-11-23 02:05:02,368 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-23 02:05:02,368 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-23 02:05:02,368 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-23 02:05:02,369 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-23 02:05:02,369 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,369 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-23 02:05:02,369 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-23 02:05:02,369 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1c.c_Iteration3_Loop [2024-11-23 02:05:02,369 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-23 02:05:02,369 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-23 02:05:02,370 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,372 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,373 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,375 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,377 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,387 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-23 02:05:02,415 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-23 02:05:02,416 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-23 02:05:02,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,418 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-23 02:05:02,420 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 [2024-11-23 02:05:02,430 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:02,430 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:02,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:02,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:02,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:02,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:02,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:02,432 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:02,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:02,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,440 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-23 02:05:02,441 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 [2024-11-23 02:05:02,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:02,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:02,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:02,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:02,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:02,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:02,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:02,453 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:02,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:02,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,460 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-23 02:05:02,461 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 [2024-11-23 02:05:02,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:02,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:02,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:02,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:02,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:02,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:02,472 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:02,473 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:02,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-11-23 02:05:02,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,480 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-23 02:05:02,482 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 [2024-11-23 02:05:02,492 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:02,492 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:02,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:02,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:02,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:02,493 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:02,493 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:02,494 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-23 02:05:02,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:02,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,502 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-23 02:05:02,503 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 [2024-11-23 02:05:02,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-23 02:05:02,513 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-23 02:05:02,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-23 02:05:02,513 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-23 02:05:02,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-23 02:05:02,514 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-23 02:05:02,514 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-23 02:05:02,516 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-23 02:05:02,518 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-23 02:05:02,518 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-23 02:05:02,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-23 02:05:02,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 02:05:02,520 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-23 02:05:02,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-23 02:05:02,522 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-23 02:05:02,522 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-23 02:05:02,522 INFO L474 LassoAnalysis]: Proved termination. [2024-11-23 02:05:02,522 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-11-23 02:05:02,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-23 02:05:02,528 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-23 02:05:02,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:02,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 02:05:02,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:02,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-11-23 02:05:02,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-23 02:05:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:02,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:05:02,805 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:02,824 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-23 02:05:02,825 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 02:05:02,872 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 32 states and 38 transitions. Complement of second has 9 states. [2024-11-23 02:05:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-23 02:05:02,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 02:05:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2024-11-23 02:05:02,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 22 letters. Loop has 3 letters. [2024-11-23 02:05:02,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:02,875 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:05:02,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:02,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 02:05:02,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:03,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:05:03,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:03,072 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-23 02:05:03,072 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 02:05:03,110 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 32 states and 38 transitions. Complement of second has 9 states. [2024-11-23 02:05:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-23 02:05:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 02:05:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2024-11-23 02:05:03,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 22 letters. Loop has 3 letters. [2024-11-23 02:05:03,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:03,111 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-23 02:05:03,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 02:05:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:03,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-23 02:05:03,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 02:05:03,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 02:05:03,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 02:05:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 02:05:03,280 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-23 02:05:03,280 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 02:05:03,357 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 54 states and 66 transitions. Complement of second has 17 states. [2024-11-23 02:05:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-23 02:05:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-23 02:05:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 29 transitions. [2024-11-23 02:05:03,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 22 letters. Loop has 3 letters. [2024-11-23 02:05:03,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:03,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 25 letters. Loop has 3 letters. [2024-11-23 02:05:03,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:03,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 29 transitions. Stem has 22 letters. Loop has 6 letters. [2024-11-23 02:05:03,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-23 02:05:03,359 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 66 transitions. [2024-11-23 02:05:03,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-23 02:05:03,361 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 42 states and 53 transitions. [2024-11-23 02:05:03,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2024-11-23 02:05:03,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2024-11-23 02:05:03,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 53 transitions. [2024-11-23 02:05:03,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-23 02:05:03,362 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 53 transitions. [2024-11-23 02:05:03,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 53 transitions. [2024-11-23 02:05:03,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2024-11-23 02:05:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 26 states have internal predecessors, (28), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2024-11-23 02:05:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2024-11-23 02:05:03,365 INFO L240 hiAutomatonCegarLoop]: Abstraction has 40 states and 49 transitions. [2024-11-23 02:05:03,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 02:05:03,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 02:05:03,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-23 02:05:03,365 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 8 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-23 02:05:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 02:05:03,416 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-11-23 02:05:03,416 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 30 transitions. [2024-11-23 02:05:03,417 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:05:03,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 0 states and 0 transitions. [2024-11-23 02:05:03,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-23 02:05:03,417 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-23 02:05:03,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-23 02:05:03,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-23 02:05:03,417 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:05:03,417 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:05:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 02:05:03,418 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-23 02:05:03,419 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-23 02:05:03,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-23 02:05:03,419 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-23 02:05:03,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-23 02:05:03,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:05:03 BoogieIcfgContainer [2024-11-23 02:05:03,426 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-23 02:05:03,427 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-23 02:05:03,427 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-23 02:05:03,427 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-23 02:05:03,427 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:05:00" (3/4) ... [2024-11-23 02:05:03,429 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-23 02:05:03,430 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-23 02:05:03,430 INFO L158 Benchmark]: Toolchain (without parser) took 3658.34ms. Allocated memory is still 184.5MB. Free memory was 153.2MB in the beginning and 57.7MB in the end (delta: 95.5MB). Peak memory consumption was 91.9MB. Max. memory is 16.1GB. [2024-11-23 02:05:03,430 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 121.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:05:03,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.63ms. Allocated memory is still 184.5MB. Free memory was 153.2MB in the beginning and 141.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-23 02:05:03,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.81ms. Allocated memory is still 184.5MB. Free memory was 141.2MB in the beginning and 140.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-23 02:05:03,431 INFO L158 Benchmark]: Boogie Preprocessor took 27.23ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 139.1MB in the end (delta: 975.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:05:03,431 INFO L158 Benchmark]: RCFGBuilder took 231.63ms. Allocated memory is still 184.5MB. Free memory was 139.1MB in the beginning and 127.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-23 02:05:03,431 INFO L158 Benchmark]: BuchiAutomizer took 3171.37ms. Allocated memory is still 184.5MB. Free memory was 127.6MB in the beginning and 57.7MB in the end (delta: 69.9MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. [2024-11-23 02:05:03,432 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 184.5MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 02:05:03,433 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 121.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.63ms. Allocated memory is still 184.5MB. Free memory was 153.2MB in the beginning and 141.2MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.81ms. Allocated memory is still 184.5MB. Free memory was 141.2MB in the beginning and 140.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.23ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 139.1MB in the end (delta: 975.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 231.63ms. Allocated memory is still 184.5MB. Free memory was 139.1MB in the beginning and 127.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 3171.37ms. Allocated memory is still 184.5MB. Free memory was 127.6MB in the beginning and 57.7MB in the end (delta: 69.9MB). Peak memory consumption was 66.8MB. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 184.5MB. Free memory is still 57.7MB. 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 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(j) and consists of 5 locations. One deterministic module has affine ranking function \old(i) and consists of 6 locations. One nondeterministic module has affine ranking function \old(i) and consists of 6 locations. 2 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.1s and 4 iterations. TraceHistogramMax:3. Analysis of lassos took 1.6s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 4 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 [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 84 mSDsluCounter, 281 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 187 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128 IncrementalHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 94 mSDtfsCounter, 128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT2 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-23 02:05:03,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/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