./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:12:02,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:12:02,923 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-12 00:12:02,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:12:02,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:12:02,955 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:12:02,956 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:12:02,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:12:02,957 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:12:02,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:12:02,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:12:02,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:12:02,959 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:12:02,960 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-12 00:12:02,961 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-12 00:12:02,961 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-12 00:12:02,961 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-12 00:12:02,961 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-12 00:12:02,962 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-12 00:12:02,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:12:02,962 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-12 00:12:02,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:12:02,965 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:12:02,965 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-12 00:12:02,965 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-12 00:12:02,965 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-12 00:12:02,966 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:12:02,966 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:12:02,966 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:12:02,966 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-12 00:12:02,966 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:12:02,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:12:02,967 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:12:02,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:12:02,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:12:02,968 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-12 00:12:02,968 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c [2024-10-12 00:12:03,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:12:03,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:12:03,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:12:03,258 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:12:03,259 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:12:03,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2024-10-12 00:12:04,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:12:04,634 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-10-12 00:12:04,777 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:12:04,777 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2024-10-12 00:12:04,783 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cf62cb96c/bbaaa58d1e91434bbe7ca2a83a267f9c/FLAG14274d5d2 [2024-10-12 00:12:04,798 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/cf62cb96c/bbaaa58d1e91434bbe7ca2a83a267f9c [2024-10-12 00:12:04,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:12:04,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:12:04,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:12:04,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:12:04,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:12:04,810 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:12:04" (1/1) ... [2024-10-12 00:12:04,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d51ef2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:04, skipping insertion in model container [2024-10-12 00:12:04,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:12:04" (1/1) ... [2024-10-12 00:12:04,828 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:12:04,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:12:04,981 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:12:04,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:12:05,009 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:12:05,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05 WrapperNode [2024-10-12 00:12:05,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:12:05,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:12:05,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:12:05,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:12:05,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,031 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7 [2024-10-12 00:12:05,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:12:05,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:12:05,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:12:05,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:12:05,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,041 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,046 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-12 00:12:05,046 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,049 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:12:05,059 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:12:05,059 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:12:05,059 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:12:05,060 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (1/1) ... [2024-10-12 00:12:05,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:05,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:05,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:05,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-12 00:12:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2024-10-12 00:12:05,137 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2024-10-12 00:12:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2024-10-12 00:12:05,137 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2024-10-12 00:12:05,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:12:05,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:12:05,183 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:12:05,185 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:12:05,356 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-12 00:12:05,356 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:12:05,369 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:12:05,373 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 00:12:05,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:12:05 BoogieIcfgContainer [2024-10-12 00:12:05,374 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:12:05,375 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-12 00:12:05,375 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-12 00:12:05,381 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-12 00:12:05,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:12:05,383 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.10 12:12:04" (1/3) ... [2024-10-12 00:12:05,384 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a75493e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:12:05, skipping insertion in model container [2024-10-12 00:12:05,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:12:05,384 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:05" (2/3) ... [2024-10-12 00:12:05,385 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a75493e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:12:05, skipping insertion in model container [2024-10-12 00:12:05,386 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:12:05,386 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:12:05" (3/3) ... [2024-10-12 00:12:05,387 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1b.c [2024-10-12 00:12:05,440 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-12 00:12:05,441 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-12 00:12:05,441 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-12 00:12:05,441 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-12 00:12:05,441 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-12 00:12:05,441 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-12 00:12:05,442 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-12 00:12:05,443 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-12 00:12:05,447 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) [2024-10-12 00:12:05,463 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-12 00:12:05,464 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:05,464 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:05,469 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 00:12:05,470 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:05,470 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-12 00:12:05,470 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) [2024-10-12 00:12:05,472 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-12 00:12:05,473 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:05,473 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:05,474 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 00:12:05,474 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:05,479 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 [2024-10-12 00:12:05,480 INFO L747 eck$LassoCheckResult]: Loop: 7#$Ultimate##0true ~j := #in~j; 17#L18true assume !(~j <= 0); 20#L20true call #t~ret3 := rec1(~j - 1);< 4#$Ultimate##0true ~i := #in~i; 18#L12true assume ~i <= 0;#res := 0; 15#rec1FINALtrue assume true; 16#rec1EXITtrue >#34#return; 3#L20-1true call #t~ret4 := rec2(#t~ret3);< 7#$Ultimate##0true [2024-10-12 00:12:05,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:05,487 INFO L85 PathProgramCache]: Analyzing trace with hash 48738, now seen corresponding path program 1 times [2024-10-12 00:12:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:05,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510004576] [2024-10-12 00:12:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:05,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:05,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:05,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1074209557, now seen corresponding path program 1 times [2024-10-12 00:12:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:05,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494294741] [2024-10-12 00:12:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:05,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:05,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:05,609 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:05,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1203131828, now seen corresponding path program 1 times [2024-10-12 00:12:05,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:05,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27298108] [2024-10-12 00:12:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:05,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:05,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:05,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:05,752 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:05,752 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:05,753 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:05,753 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:05,753 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:05,753 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:05,753 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:05,753 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:05,753 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration1_Loop [2024-10-12 00:12:05,753 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:05,754 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:05,764 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:05,773 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:05,776 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:05,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:05,789 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:05,832 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:05,833 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:05,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:05,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:05,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-12 00:12:05,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:05,838 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:05,856 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:05,856 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_~j=0} Honda state: {rec2_~j=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:05,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-12 00:12:05,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:05,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:05,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:05,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-12 00:12:05,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:05,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:05,884 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:05,884 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:05,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-12 00:12:05,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:05,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:05,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:05,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-12 00:12:05,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:05,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:05,911 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:05,911 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret4=0} Honda state: {rec2_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:05,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:05,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:05,924 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:05,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-12 00:12:05,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:05,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:05,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-12 00:12:05,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:05,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:05,951 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:05,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-12 00:12:05,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:05,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:05,967 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:12:05,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:05,978 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:05,978 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:05,979 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:05,979 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:05,979 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:12:05,979 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:05,979 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:05,979 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:05,979 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration1_Loop [2024-10-12 00:12:05,979 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:05,979 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:05,980 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:05,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:05,984 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:05,986 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:05,991 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:06,016 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:06,019 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:12:06,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:06,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:06,022 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:06,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-12 00:12:06,024 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 [2024-10-12 00:12:06,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:06,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:06,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:06,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:06,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:06,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:06,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:06,044 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:06,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-12 00:12:06,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:06,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:06,057 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:06,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-12 00:12:06,060 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 [2024-10-12 00:12:06,070 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:06,070 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:06,070 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:06,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:06,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:06,072 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:06,072 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:06,075 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:06,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-12 00:12:06,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:06,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:06,087 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:06,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-12 00:12:06,088 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 [2024-10-12 00:12:06,099 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:06,099 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:06,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:06,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:06,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:06,099 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:06,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:06,101 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:06,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-12 00:12:06,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:06,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:06,114 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:06,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-12 00:12:06,117 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 [2024-10-12 00:12:06,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:06,127 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:06,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:06,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:06,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:06,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:06,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:06,131 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:12:06,135 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:12:06,136 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 00:12:06,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:06,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:06,157 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:06,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-12 00:12:06,159 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:12:06,160 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:12:06,160 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:12:06,160 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2024-10-12 00:12:06,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:06,174 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:12:06,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:06,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:12:06,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:06,248 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 00:12:06,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:06,375 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2024-10-12 00:12:06,377 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 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:12:06,754 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 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 187 states and 266 transitions. Complement of second has 63 states. [2024-10-12 00:12:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 1 stem states 9 non-accepting loop states 1 accepting loop states [2024-10-12 00:12:06,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:12:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 55 transitions. [2024-10-12 00:12:06,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 55 transitions. Stem has 3 letters. Loop has 8 letters. [2024-10-12 00:12:06,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:06,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 55 transitions. Stem has 11 letters. Loop has 8 letters. [2024-10-12 00:12:06,767 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:06,767 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 55 transitions. Stem has 3 letters. Loop has 16 letters. [2024-10-12 00:12:06,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:06,768 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 187 states and 266 transitions. [2024-10-12 00:12:06,787 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-12 00:12:06,795 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 187 states to 83 states and 121 transitions. [2024-10-12 00:12:06,796 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2024-10-12 00:12:06,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2024-10-12 00:12:06,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 121 transitions. [2024-10-12 00:12:06,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:06,799 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83 states and 121 transitions. [2024-10-12 00:12:06,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:06,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 121 transitions. [2024-10-12 00:12:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2024-10-12 00:12:06,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 32 states have internal predecessors, (34), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (30), 15 states have call predecessors, (30), 16 states have call successors, (30) [2024-10-12 00:12:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 84 transitions. [2024-10-12 00:12:06,829 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 84 transitions. [2024-10-12 00:12:06,829 INFO L425 stractBuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2024-10-12 00:12:06,829 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-12 00:12:06,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 84 transitions. [2024-10-12 00:12:06,831 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-12 00:12:06,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:06,831 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:06,831 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:06,831 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:12:06,832 INFO L745 eck$LassoCheckResult]: Stem: 384#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 377#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; 344#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 353#$Ultimate##0 ~j := #in~j; 355#L18 assume !(~j <= 0); 348#L20 call #t~ret3 := rec1(~j - 1);< 347#$Ultimate##0 ~i := #in~i; 349#L12 assume !(~i <= 0); 358#L14 call #t~ret0 := rec1(~i - 2);< 375#$Ultimate##0 [2024-10-12 00:12:06,832 INFO L747 eck$LassoCheckResult]: Loop: 375#$Ultimate##0 ~i := #in~i; 390#L12 assume !(~i <= 0); 362#L14 call #t~ret0 := rec1(~i - 2);< 375#$Ultimate##0 [2024-10-12 00:12:06,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:06,832 INFO L85 PathProgramCache]: Analyzing trace with hash 838970620, now seen corresponding path program 1 times [2024-10-12 00:12:06,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:06,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368751603] [2024-10-12 00:12:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:06,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:06,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:06,846 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:06,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 1 times [2024-10-12 00:12:06,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:06,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371005443] [2024-10-12 00:12:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:06,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:06,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:06,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:06,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1359045147, now seen corresponding path program 2 times [2024-10-12 00:12:06,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:06,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572656254] [2024-10-12 00:12:06,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:06,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:06,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:06,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:06,921 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:06,921 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:06,921 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:06,922 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:06,922 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:06,922 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:06,922 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:06,922 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:06,922 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration2_Loop [2024-10-12 00:12:06,922 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:06,922 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:06,923 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:06,925 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:06,927 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:06,928 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:06,930 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:06,931 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:06,957 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:06,958 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:06,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:06,961 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:06,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-12 00:12:06,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:06,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:06,979 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:06,979 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:06,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-12 00:12:06,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:06,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:06,998 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:06,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-12 00:12:07,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:07,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:07,014 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:07,014 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:07,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:07,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-12 00:12:07,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:07,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:07,040 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:07,040 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:07,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:07,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,052 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-12 00:12:07,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:07,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:07,065 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:07,065 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:07,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-12 00:12:07,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-12 00:12:07,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:07,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:07,093 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:07,093 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:07,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-12 00:12:07,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,106 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-12 00:12:07,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:07,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:07,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:07,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,131 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-12 00:12:07,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:07,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:07,177 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:12:07,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-12 00:12:07,182 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:07,182 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:07,182 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:07,182 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:07,182 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:12:07,182 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,182 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:07,182 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:07,183 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration2_Loop [2024-10-12 00:12:07,183 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:07,183 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:07,184 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,185 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,188 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,191 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,194 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,202 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,228 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:07,228 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:12:07,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,233 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-12 00:12:07,240 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 [2024-10-12 00:12:07,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:07,251 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:07,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:07,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:07,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:07,252 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:07,252 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:07,253 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:07,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-12 00:12:07,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,266 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-12 00:12:07,269 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 [2024-10-12 00:12:07,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:07,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:07,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:07,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:07,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:07,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:07,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:07,284 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:07,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:07,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,298 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-12 00:12:07,300 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 [2024-10-12 00:12:07,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:07,311 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:07,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:07,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:07,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:07,312 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:07,312 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:07,317 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:07,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-10-12 00:12:07,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,331 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-12 00:12:07,333 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 [2024-10-12 00:12:07,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:07,344 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:07,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:07,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:07,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:07,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:07,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:07,345 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:07,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-10-12 00:12:07,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,358 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-12 00:12:07,359 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 [2024-10-12 00:12:07,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:07,369 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:07,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:07,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:07,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:07,370 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:07,370 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:07,373 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:12:07,375 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-12 00:12:07,375 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:12:07,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,376 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-12 00:12:07,378 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:12:07,378 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:12:07,378 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:12:07,378 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-12 00:12:07,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:07,389 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:12:07,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:07,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:12:07,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:07,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:12:07,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:07,463 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 [2024-10-12 00:12:07,464 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 32 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:12:07,501 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 32. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 106 states and 150 transitions. Complement of second has 17 states. [2024-10-12 00:12:07,501 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 [2024-10-12 00:12:07,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:12:07,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2024-10-12 00:12:07,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 9 letters. Loop has 3 letters. [2024-10-12 00:12:07,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:07,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2024-10-12 00:12:07,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:07,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 9 letters. Loop has 6 letters. [2024-10-12 00:12:07,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:07,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 150 transitions. [2024-10-12 00:12:07,505 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-12 00:12:07,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 94 states and 138 transitions. [2024-10-12 00:12:07,507 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2024-10-12 00:12:07,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2024-10-12 00:12:07,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 138 transitions. [2024-10-12 00:12:07,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:07,508 INFO L218 hiAutomatonCegarLoop]: Abstraction has 94 states and 138 transitions. [2024-10-12 00:12:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 138 transitions. [2024-10-12 00:12:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2024-10-12 00:12:07,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 58 states have internal predecessors, (62), 27 states have call successors, (27), 15 states have call predecessors, (27), 12 states have return successors, (41), 16 states have call predecessors, (41), 22 states have call successors, (41) [2024-10-12 00:12:07,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 130 transitions. [2024-10-12 00:12:07,523 INFO L240 hiAutomatonCegarLoop]: Abstraction has 90 states and 130 transitions. [2024-10-12 00:12:07,523 INFO L425 stractBuchiCegarLoop]: Abstraction has 90 states and 130 transitions. [2024-10-12 00:12:07,523 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-12 00:12:07,524 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 130 transitions. [2024-10-12 00:12:07,525 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-12 00:12:07,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:07,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:07,527 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:07,527 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:12:07,528 INFO L745 eck$LassoCheckResult]: Stem: 623#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 611#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; 577#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 590#$Ultimate##0 ~j := #in~j; 592#L18 assume !(~j <= 0); 584#L20 call #t~ret3 := rec1(~j - 1);< 583#$Ultimate##0 ~i := #in~i; 585#L12 assume !(~i <= 0); 613#L14 call #t~ret0 := rec1(~i - 2);< 619#$Ultimate##0 ~i := #in~i; 645#L12 assume ~i <= 0;#res := 0; 612#rec1FINAL assume true; 614#rec1EXIT >#28#return; 610#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 608#$Ultimate##0 [2024-10-12 00:12:07,528 INFO L747 eck$LassoCheckResult]: Loop: 608#$Ultimate##0 ~i := #in~i; 638#L12 assume !(~i <= 0); 630#L14 call #t~ret0 := rec1(~i - 2);< 608#$Ultimate##0 [2024-10-12 00:12:07,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:07,528 INFO L85 PathProgramCache]: Analyzing trace with hash 372282091, now seen corresponding path program 1 times [2024-10-12 00:12:07,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:07,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367614548] [2024-10-12 00:12:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:07,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:07,542 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:07,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:07,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 2 times [2024-10-12 00:12:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:07,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052269673] [2024-10-12 00:12:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:07,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:07,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:07,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:07,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1050214860, now seen corresponding path program 2 times [2024-10-12 00:12:07,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:07,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829713500] [2024-10-12 00:12:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:07,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:07,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 00:12:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:12:07,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:12:07,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829713500] [2024-10-12 00:12:07,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829713500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:12:07,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:12:07,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 00:12:07,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928210662] [2024-10-12 00:12:07,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:12:07,710 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:07,710 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:07,710 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:07,710 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:07,710 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:07,710 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,710 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:07,710 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:07,710 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration3_Loop [2024-10-12 00:12:07,710 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:07,710 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:07,711 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,717 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,726 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,727 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,729 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,763 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:07,763 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:07,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,765 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-12 00:12:07,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:07,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:07,779 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:07,779 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:07,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:07,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,792 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-12 00:12:07,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:07,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:07,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:07,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,817 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-12 00:12:07,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:07,819 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:07,865 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:12:07,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:07,870 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:07,870 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:07,870 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:07,870 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:07,870 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:12:07,870 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,870 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:07,870 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:07,870 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration3_Loop [2024-10-12 00:12:07,870 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:07,870 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:07,872 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,880 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,881 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,884 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,888 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:07,910 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:07,912 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:12:07,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,914 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-12 00:12:07,917 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 [2024-10-12 00:12:07,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:07,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:07,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:07,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:07,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:07,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:07,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:07,930 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:12:07,931 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-12 00:12:07,931 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:12:07,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,933 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-12 00:12:07,935 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:12:07,935 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:12:07,935 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:12:07,935 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-12 00:12:07,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-10-12 00:12:07,947 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:12:07,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:07,979 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:12:07,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:12:08,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:08,073 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 [2024-10-12 00:12:08,073 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 90 states and 130 transitions. cyclomatic complexity: 47 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:12:08,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-10-12 00:12:08,121 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-10-12 00:12:08,164 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 90 states and 130 transitions. cyclomatic complexity: 47. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 135 states and 194 transitions. Complement of second has 18 states. [2024-10-12 00:12:08,168 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 [2024-10-12 00:12:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:12:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2024-10-12 00:12:08,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 14 letters. Loop has 3 letters. [2024-10-12 00:12:08,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:08,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 17 letters. Loop has 3 letters. [2024-10-12 00:12:08,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:08,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 14 letters. Loop has 6 letters. [2024-10-12 00:12:08,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:08,170 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 194 transitions. [2024-10-12 00:12:08,174 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-12 00:12:08,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 123 states and 182 transitions. [2024-10-12 00:12:08,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2024-10-12 00:12:08,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2024-10-12 00:12:08,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 182 transitions. [2024-10-12 00:12:08,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:08,179 INFO L218 hiAutomatonCegarLoop]: Abstraction has 123 states and 182 transitions. [2024-10-12 00:12:08,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 182 transitions. [2024-10-12 00:12:08,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2024-10-12 00:12:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 65 states have (on average 1.2307692307692308) internal successors, (80), 74 states have internal predecessors, (80), 33 states have call successors, (33), 19 states have call predecessors, (33), 16 states have return successors, (53), 20 states have call predecessors, (53), 28 states have call successors, (53) [2024-10-12 00:12:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 166 transitions. [2024-10-12 00:12:08,187 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 166 transitions. [2024-10-12 00:12:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:12:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:12:08,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:12:08,191 INFO L87 Difference]: Start difference. First operand 114 states and 166 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:12:08,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:12:08,224 INFO L93 Difference]: Finished difference Result 124 states and 176 transitions. [2024-10-12 00:12:08,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 176 transitions. [2024-10-12 00:12:08,227 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-10-12 00:12:08,229 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 122 states and 174 transitions. [2024-10-12 00:12:08,229 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2024-10-12 00:12:08,229 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2024-10-12 00:12:08,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 174 transitions. [2024-10-12 00:12:08,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:08,229 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 174 transitions. [2024-10-12 00:12:08,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 174 transitions. [2024-10-12 00:12:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2024-10-12 00:12:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 64 states have internal predecessors, (68), 31 states have call successors, (31), 17 states have call predecessors, (31), 14 states have return successors, (45), 20 states have call predecessors, (45), 26 states have call successors, (45) [2024-10-12 00:12:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 144 transitions. [2024-10-12 00:12:08,236 INFO L240 hiAutomatonCegarLoop]: Abstraction has 102 states and 144 transitions. [2024-10-12 00:12:08,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:12:08,237 INFO L425 stractBuchiCegarLoop]: Abstraction has 102 states and 144 transitions. [2024-10-12 00:12:08,237 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-12 00:12:08,237 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 144 transitions. [2024-10-12 00:12:08,238 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 00:12:08,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:08,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:08,239 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:08,239 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:08,239 INFO L745 eck$LassoCheckResult]: Stem: 1199#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1189#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1144#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1175#$Ultimate##0 ~j := #in~j; 1209#L18 assume !(~j <= 0); 1161#L20 call #t~ret3 := rec1(~j - 1);< 1208#$Ultimate##0 ~i := #in~i; 1207#L12 assume !(~i <= 0); 1178#L14 call #t~ret0 := rec1(~i - 2);< 1205#$Ultimate##0 ~i := #in~i; 1204#L12 assume !(~i <= 0); 1184#L14 call #t~ret0 := rec1(~i - 2);< 1203#$Ultimate##0 ~i := #in~i; 1195#L12 assume ~i <= 0;#res := 0; 1190#rec1FINAL assume true; 1191#rec1EXIT >#28#return; 1152#L14-1 [2024-10-12 00:12:08,240 INFO L747 eck$LassoCheckResult]: Loop: 1152#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1150#$Ultimate##0 ~i := #in~i; 1153#L12 assume ~i <= 0;#res := 0; 1237#rec1FINAL assume true; 1232#rec1EXIT >#30#return; 1176#L14-2 call #t~ret2 := rec1(#t~ret1);< 1185#$Ultimate##0 ~i := #in~i; 1233#L12 assume !(~i <= 0); 1179#L14 call #t~ret0 := rec1(~i - 2);< 1185#$Ultimate##0 ~i := #in~i; 1233#L12 assume ~i <= 0;#res := 0; 1236#rec1FINAL assume true; 1230#rec1EXIT >#28#return; 1152#L14-1 [2024-10-12 00:12:08,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1325197585, now seen corresponding path program 1 times [2024-10-12 00:12:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:08,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564457193] [2024-10-12 00:12:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,246 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:08,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:08,256 INFO L85 PathProgramCache]: Analyzing trace with hash 949089090, now seen corresponding path program 1 times [2024-10-12 00:12:08,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354112095] [2024-10-12 00:12:08,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-12 00:12:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 00:12:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:12:08,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:12:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354112095] [2024-10-12 00:12:08,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354112095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:12:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849144155] [2024-10-12 00:12:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:12:08,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:08,323 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:12:08,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-12 00:12:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:12:08,349 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:08,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:12:08,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849144155] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:12:08,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:12:08,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-10-12 00:12:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785030155] [2024-10-12 00:12:08,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:12:08,360 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-12 00:12:08,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:12:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:12:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:12:08,360 INFO L87 Difference]: Start difference. First operand 102 states and 144 transitions. cyclomatic complexity: 49 Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 00:12:08,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:12:08,390 INFO L93 Difference]: Finished difference Result 118 states and 162 transitions. [2024-10-12 00:12:08,390 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 162 transitions. [2024-10-12 00:12:08,392 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-12 00:12:08,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 118 states and 162 transitions. [2024-10-12 00:12:08,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2024-10-12 00:12:08,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2024-10-12 00:12:08,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 162 transitions. [2024-10-12 00:12:08,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:08,394 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 162 transitions. [2024-10-12 00:12:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 162 transitions. [2024-10-12 00:12:08,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2024-10-12 00:12:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 70 states have internal predecessors, (74), 35 states have call successors, (35), 19 states have call predecessors, (35), 16 states have return successors, (49), 24 states have call predecessors, (49), 30 states have call successors, (49) [2024-10-12 00:12:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2024-10-12 00:12:08,400 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-10-12 00:12:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:12:08,401 INFO L425 stractBuchiCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-10-12 00:12:08,401 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-12 00:12:08,401 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 158 transitions. [2024-10-12 00:12:08,402 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-12 00:12:08,402 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:08,402 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:08,403 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:08,403 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:08,403 INFO L745 eck$LassoCheckResult]: Stem: 1481#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1468#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; 1422#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1445#$Ultimate##0 ~j := #in~j; 1491#L18 assume !(~j <= 0); 1438#L20 call #t~ret3 := rec1(~j - 1);< 1490#$Ultimate##0 ~i := #in~i; 1489#L12 assume !(~i <= 0); 1453#L14 call #t~ret0 := rec1(~i - 2);< 1486#$Ultimate##0 ~i := #in~i; 1487#L12 assume ~i <= 0;#res := 0; 1533#rec1FINAL assume true; 1529#rec1EXIT >#28#return; 1514#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1456#$Ultimate##0 ~i := #in~i; 1518#L12 assume ~i <= 0;#res := 0; 1516#rec1FINAL assume true; 1513#rec1EXIT >#30#return; 1428#L14-2 call #t~ret2 := rec1(#t~ret1);< 1427#$Ultimate##0 ~i := #in~i; 1430#L12 assume ~i <= 0;#res := 0; 1469#rec1FINAL assume true; 1470#rec1EXIT >#32#return; 1437#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1440#rec1FINAL assume true; 1483#rec1EXIT >#34#return; 1420#L20-1 [2024-10-12 00:12:08,403 INFO L747 eck$LassoCheckResult]: Loop: 1420#L20-1 call #t~ret4 := rec2(#t~ret3);< 1424#$Ultimate##0 ~j := #in~j; 1435#L18 assume !(~j <= 0); 1454#L20 call #t~ret3 := rec1(~j - 1);< 1478#$Ultimate##0 ~i := #in~i; 1519#L12 assume !(~i <= 0); 1448#L14 call #t~ret0 := rec1(~i - 2);< 1478#$Ultimate##0 ~i := #in~i; 1519#L12 assume ~i <= 0;#res := 0; 1517#rec1FINAL assume true; 1515#rec1EXIT >#28#return; 1446#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1456#$Ultimate##0 ~i := #in~i; 1518#L12 assume ~i <= 0;#res := 0; 1516#rec1FINAL assume true; 1513#rec1EXIT >#30#return; 1429#L14-2 call #t~ret2 := rec1(#t~ret1);< 1427#$Ultimate##0 ~i := #in~i; 1430#L12 assume ~i <= 0;#res := 0; 1469#rec1FINAL assume true; 1470#rec1EXIT >#32#return; 1473#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1495#rec1FINAL assume true; 1482#rec1EXIT >#34#return; 1420#L20-1 [2024-10-12 00:12:08,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:08,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1231361643, now seen corresponding path program 1 times [2024-10-12 00:12:08,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:08,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795972944] [2024-10-12 00:12:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:08,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:08,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1591101301, now seen corresponding path program 1 times [2024-10-12 00:12:08,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:08,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64287491] [2024-10-12 00:12:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:08,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 774680821, now seen corresponding path program 1 times [2024-10-12 00:12:08,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:08,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306827131] [2024-10-12 00:12:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 00:12:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 00:12:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 00:12:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 00:12:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-12 00:12:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 00:12:08,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 00:12:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 00:12:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,661 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-12 00:12:08,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:12:08,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306827131] [2024-10-12 00:12:08,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306827131] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:12:08,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397595077] [2024-10-12 00:12:08,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:12:08,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:08,665 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:12:08,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-12 00:12:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:08,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:12:08,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-12 00:12:08,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:12:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-12 00:12:08,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397595077] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:12:08,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:12:08,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 12 [2024-10-12 00:12:08,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475456552] [2024-10-12 00:12:08,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:12:09,200 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:09,201 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:09,201 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:09,201 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:09,201 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:09,201 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,201 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:09,201 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:09,201 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration5_Loop [2024-10-12 00:12:09,201 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:09,201 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:09,202 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,209 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,211 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,237 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:09,238 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:09,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,240 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-12 00:12:09,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:09,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:09,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:09,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,270 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-10-12 00:12:09,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:09,272 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:10,361 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:12:10,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:10,366 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:10,366 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:10,366 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:10,366 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:10,366 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:12:10,367 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:10,367 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:10,367 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:10,367 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration5_Loop [2024-10-12 00:12:10,367 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:10,367 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:10,367 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:10,375 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:10,376 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:10,404 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:10,404 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:12:10,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:10,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:10,405 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:10,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-10-12 00:12:10,407 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 [2024-10-12 00:12:10,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:10,417 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:10,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:10,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:10,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:10,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:10,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:10,420 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:12:10,424 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:12:10,424 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 00:12:10,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:10,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:10,426 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:10,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-10-12 00:12:10,428 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:12:10,428 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:12:10,428 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:12:10,428 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#t~ret3) = 1*rec2_#t~ret3 Supporting invariants [] [2024-10-12 00:12:10,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2024-10-12 00:12:10,440 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:12:10,443 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret3 [2024-10-12 00:12:10,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:10,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:12:10,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:10,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 00:12:10,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 00:12:10,842 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2024-10-12 00:12:10,842 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 114 states and 158 transitions. cyclomatic complexity: 51 Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:11,099 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 114 states and 158 transitions. cyclomatic complexity: 51. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Result 585 states and 904 transitions. Complement of second has 45 states. [2024-10-12 00:12:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2024-10-12 00:12:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 5 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:11,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 53 transitions. [2024-10-12 00:12:11,102 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 26 letters. Loop has 24 letters. [2024-10-12 00:12:11,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:11,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 50 letters. Loop has 24 letters. [2024-10-12 00:12:11,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:11,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 26 letters. Loop has 48 letters. [2024-10-12 00:12:11,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:11,105 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 585 states and 904 transitions. [2024-10-12 00:12:11,114 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2024-10-12 00:12:11,124 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 585 states to 433 states and 650 transitions. [2024-10-12 00:12:11,124 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2024-10-12 00:12:11,125 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 142 [2024-10-12 00:12:11,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 433 states and 650 transitions. [2024-10-12 00:12:11,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:11,126 INFO L218 hiAutomatonCegarLoop]: Abstraction has 433 states and 650 transitions. [2024-10-12 00:12:11,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states and 650 transitions. [2024-10-12 00:12:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 384. [2024-10-12 00:12:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 203 states have (on average 1.1428571428571428) internal successors, (232), 226 states have internal predecessors, (232), 125 states have call successors, (129), 57 states have call predecessors, (129), 56 states have return successors, (174), 100 states have call predecessors, (174), 116 states have call successors, (174) [2024-10-12 00:12:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 535 transitions. [2024-10-12 00:12:11,157 INFO L240 hiAutomatonCegarLoop]: Abstraction has 384 states and 535 transitions. [2024-10-12 00:12:11,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:12:11,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 00:12:11,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-12 00:12:11,158 INFO L87 Difference]: Start difference. First operand 384 states and 535 transitions. Second operand has 13 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-12 00:12:11,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:12:11,293 INFO L93 Difference]: Finished difference Result 443 states and 646 transitions. [2024-10-12 00:12:11,293 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 443 states and 646 transitions. [2024-10-12 00:12:11,298 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2024-10-12 00:12:11,302 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 443 states to 350 states and 496 transitions. [2024-10-12 00:12:11,302 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 132 [2024-10-12 00:12:11,303 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 136 [2024-10-12 00:12:11,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 350 states and 496 transitions. [2024-10-12 00:12:11,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:11,303 INFO L218 hiAutomatonCegarLoop]: Abstraction has 350 states and 496 transitions. [2024-10-12 00:12:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states and 496 transitions. [2024-10-12 00:12:11,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 315. [2024-10-12 00:12:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 169 states have (on average 1.1005917159763314) internal successors, (186), 183 states have internal predecessors, (186), 100 states have call successors, (102), 49 states have call predecessors, (102), 46 states have return successors, (128), 82 states have call predecessors, (128), 84 states have call successors, (128) [2024-10-12 00:12:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 416 transitions. [2024-10-12 00:12:11,314 INFO L240 hiAutomatonCegarLoop]: Abstraction has 315 states and 416 transitions. [2024-10-12 00:12:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:12:11,314 INFO L425 stractBuchiCegarLoop]: Abstraction has 315 states and 416 transitions. [2024-10-12 00:12:11,314 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-12 00:12:11,315 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 315 states and 416 transitions. [2024-10-12 00:12:11,316 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2024-10-12 00:12:11,316 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:11,316 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:11,317 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:11,317 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:12:11,317 INFO L745 eck$LassoCheckResult]: Stem: 3624#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3606#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 3559#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 3587#$Ultimate##0 ~j := #in~j; 3643#L18 assume !(~j <= 0); 3574#L20 call #t~ret3 := rec1(~j - 1);< 3641#$Ultimate##0 ~i := #in~i; 3650#L12 assume !(~i <= 0); 3593#L14 call #t~ret0 := rec1(~i - 2);< 3649#$Ultimate##0 ~i := #in~i; 3654#L12 assume ~i <= 0;#res := 0; 3756#rec1FINAL assume true; 3754#rec1EXIT >#28#return; 3564#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 3563#$Ultimate##0 ~i := #in~i; 3566#L12 assume ~i <= 0;#res := 0; 3763#rec1FINAL assume true; 3751#rec1EXIT >#30#return; 3750#L14-2 call #t~ret2 := rec1(#t~ret1);< 3596#$Ultimate##0 ~i := #in~i; 3755#L12 assume ~i <= 0;#res := 0; 3753#rec1FINAL assume true; 3752#rec1EXIT >#32#return; 3573#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 3575#rec1FINAL assume true; 3625#rec1EXIT >#34#return; 3556#L20-1 call #t~ret4 := rec2(#t~ret3);< 3558#$Ultimate##0 ~j := #in~j; 3571#L18 assume !(~j <= 0); 3612#L20 call #t~ret3 := rec1(~j - 1);< 3622#$Ultimate##0 ~i := #in~i; 3741#L12 assume !(~i <= 0); 3618#L14 call #t~ret0 := rec1(~i - 2);< 3620#$Ultimate##0 [2024-10-12 00:12:11,317 INFO L747 eck$LassoCheckResult]: Loop: 3620#$Ultimate##0 ~i := #in~i; 3711#L12 assume !(~i <= 0); 3696#L14 call #t~ret0 := rec1(~i - 2);< 3620#$Ultimate##0 [2024-10-12 00:12:11,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1565705522, now seen corresponding path program 2 times [2024-10-12 00:12:11,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:11,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230217693] [2024-10-12 00:12:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:11,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:11,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-10-12 00:12:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:11,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-12 00:12:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:11,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 00:12:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:11,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 00:12:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:11,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 00:12:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:12:11,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:12:11,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230217693] [2024-10-12 00:12:11,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230217693] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:12:11,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736368205] [2024-10-12 00:12:11,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:12:11,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:12:11,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,418 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-12 00:12:11,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:12:11,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:12:11,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:12:11,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:12:11,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:12:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 00:12:11,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736368205] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:12:11,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:12:11,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-10-12 00:12:11,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957125703] [2024-10-12 00:12:11,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:12:11,566 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 00:12:11,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 3 times [2024-10-12 00:12:11,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:11,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501460701] [2024-10-12 00:12:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:11,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:11,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:11,598 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:11,598 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:11,598 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:11,598 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:11,598 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:11,598 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,598 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:11,598 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:11,598 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration6_Loop [2024-10-12 00:12:11,598 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:11,598 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:11,599 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,600 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,601 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,602 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,606 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,607 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,622 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:11,622 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:11,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,624 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-10-12 00:12:11,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:11,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,638 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:11,638 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:11,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-10-12 00:12:11,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,650 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-10-12 00:12:11,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:11,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,662 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:11,663 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:11,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2024-10-12 00:12:11,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,674 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-10-12 00:12:11,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:11,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,687 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:11,687 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:11,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2024-10-12 00:12:11,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,700 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-10-12 00:12:11,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:11,705 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:11,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,727 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-10-12 00:12:11,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:11,729 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,755 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:12:11,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2024-10-12 00:12:11,760 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:11,760 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:11,760 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:11,760 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:11,760 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:12:11,760 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,760 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:11,760 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:11,760 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration6_Loop [2024-10-12 00:12:11,760 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:11,760 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:11,762 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,764 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,766 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,767 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,772 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,774 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,800 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:11,800 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:12:11,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,802 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-10-12 00:12:11,803 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 [2024-10-12 00:12:11,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:11,814 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:11,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:11,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:11,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:11,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:11,814 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:11,815 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:11,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:11,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,828 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-10-12 00:12:11,829 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 [2024-10-12 00:12:11,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:11,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:11,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:11,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:11,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:11,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:11,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:11,842 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:11,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:11,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,854 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-10-12 00:12:11,856 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 [2024-10-12 00:12:11,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:11,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:11,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:11,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:11,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:11,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:11,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:11,868 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:11,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:11,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,880 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-10-12 00:12:11,882 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 [2024-10-12 00:12:11,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:11,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:11,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:11,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:11,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:11,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:11,893 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:11,895 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:12:11,896 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-12 00:12:11,896 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:12:11,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,898 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2024-10-12 00:12:11,899 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:12:11,899 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:12:11,900 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:12:11,900 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-12 00:12:11,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2024-10-12 00:12:11,911 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:12:11,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:11,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 00:12:11,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:12,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:12:12,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:12,140 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 [2024-10-12 00:12:12,141 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 00:12:12,197 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 349 states and 456 transitions. Complement of second has 18 states. [2024-10-12 00:12:12,198 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 [2024-10-12 00:12:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 00:12:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2024-10-12 00:12:12,199 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 33 letters. Loop has 3 letters. [2024-10-12 00:12:12,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:12,199 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:12:12,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:12,244 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2024-10-12 00:12:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:12,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 00:12:12,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:12,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:12:12,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:12,441 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 [2024-10-12 00:12:12,442 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 00:12:12,497 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 349 states and 456 transitions. Complement of second has 18 states. [2024-10-12 00:12:12,498 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 [2024-10-12 00:12:12,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 00:12:12,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2024-10-12 00:12:12,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 33 letters. Loop has 3 letters. [2024-10-12 00:12:12,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:12,499 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:12:12,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:12,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-12 00:12:12,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:12,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:12:12,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:12,723 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 [2024-10-12 00:12:12,723 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 00:12:12,790 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 315 states and 416 transitions. cyclomatic complexity: 114. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 486 states and 617 transitions. Complement of second has 19 states. [2024-10-12 00:12:12,791 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 [2024-10-12 00:12:12,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-12 00:12:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2024-10-12 00:12:12,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 33 letters. Loop has 3 letters. [2024-10-12 00:12:12,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:12,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 36 letters. Loop has 3 letters. [2024-10-12 00:12:12,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:12,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 33 letters. Loop has 6 letters. [2024-10-12 00:12:12,792 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:12,793 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 486 states and 617 transitions. [2024-10-12 00:12:12,797 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 26 [2024-10-12 00:12:12,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 486 states to 396 states and 527 transitions. [2024-10-12 00:12:12,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 130 [2024-10-12 00:12:12,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 137 [2024-10-12 00:12:12,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 396 states and 527 transitions. [2024-10-12 00:12:12,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:12,801 INFO L218 hiAutomatonCegarLoop]: Abstraction has 396 states and 527 transitions. [2024-10-12 00:12:12,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states and 527 transitions. [2024-10-12 00:12:12,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 352. [2024-10-12 00:12:12,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 196 states have (on average 1.1275510204081634) internal successors, (221), 212 states have internal predecessors, (221), 102 states have call successors, (104), 57 states have call predecessors, (104), 54 states have return successors, (132), 82 states have call predecessors, (132), 86 states have call successors, (132) [2024-10-12 00:12:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 457 transitions. [2024-10-12 00:12:12,809 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 457 transitions. [2024-10-12 00:12:12,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:12:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:12:12,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:12:12,810 INFO L87 Difference]: Start difference. First operand 352 states and 457 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 6 states have internal predecessors, (16), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-12 00:12:12,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:12:12,868 INFO L93 Difference]: Finished difference Result 379 states and 514 transitions. [2024-10-12 00:12:12,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 379 states and 514 transitions. [2024-10-12 00:12:12,871 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-10-12 00:12:12,872 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 379 states to 105 states and 143 transitions. [2024-10-12 00:12:12,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2024-10-12 00:12:12,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 99 [2024-10-12 00:12:12,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 143 transitions. [2024-10-12 00:12:12,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:12,873 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 143 transitions. [2024-10-12 00:12:12,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 143 transitions. [2024-10-12 00:12:12,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2024-10-12 00:12:12,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 54 states have internal predecessors, (57), 22 states have call successors, (22), 15 states have call predecessors, (22), 14 states have return successors, (28), 17 states have call predecessors, (28), 20 states have call successors, (28) [2024-10-12 00:12:12,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2024-10-12 00:12:12,875 INFO L240 hiAutomatonCegarLoop]: Abstraction has 87 states and 107 transitions. [2024-10-12 00:12:12,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 00:12:12,876 INFO L425 stractBuchiCegarLoop]: Abstraction has 87 states and 107 transitions. [2024-10-12 00:12:12,876 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-12 00:12:12,876 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 107 transitions. [2024-10-12 00:12:12,876 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-10-12 00:12:12,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:12,876 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:12,877 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:12,877 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:12:12,877 INFO L745 eck$LassoCheckResult]: Stem: 6480#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 6465#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 6444#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 6462#$Ultimate##0 ~j := #in~j; 6507#L18 assume !(~j <= 0); 6482#L20 call #t~ret3 := rec1(~j - 1);< 6506#$Ultimate##0 ~i := #in~i; 6505#L12 assume !(~i <= 0); 6456#L14 call #t~ret0 := rec1(~i - 2);< 6483#$Ultimate##0 ~i := #in~i; 6471#L12 assume !(~i <= 0); 6459#L14 [2024-10-12 00:12:12,877 INFO L747 eck$LassoCheckResult]: Loop: 6459#L14 call #t~ret0 := rec1(~i - 2);< 6513#$Ultimate##0 ~i := #in~i; 6471#L12 assume !(~i <= 0); 6459#L14 [2024-10-12 00:12:12,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:12,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1203085824, now seen corresponding path program 3 times [2024-10-12 00:12:12,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:12,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655154124] [2024-10-12 00:12:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:12,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:12,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:12,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:12,882 INFO L85 PathProgramCache]: Analyzing trace with hash 55742, now seen corresponding path program 4 times [2024-10-12 00:12:12,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:12,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013666605] [2024-10-12 00:12:12,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:12,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:12,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:12,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash 372328287, now seen corresponding path program 4 times [2024-10-12 00:12:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:12,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444101788] [2024-10-12 00:12:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:12,917 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:12,917 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:12,917 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:12,917 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:12,918 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:12,918 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:12,918 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:12,918 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:12,918 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration7_Loop [2024-10-12 00:12:12,918 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:12,918 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:12,918 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:12,920 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:12,921 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:12,926 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:12,927 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:12,960 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:12,961 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:12,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:12,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:12,962 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:12,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2024-10-12 00:12:12,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:12,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:12,976 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:12,976 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:12,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2024-10-12 00:12:12,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:12,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:12,987 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:12,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2024-10-12 00:12:12,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:12,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:13,001 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:13,001 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:13,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:13,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:13,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:13,013 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:13,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2024-10-12 00:12:13,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:13,015 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:13,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2024-10-12 00:12:13,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:13,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:13,045 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:13,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2024-10-12 00:12:13,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:13,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:14,067 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:12:14,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2024-10-12 00:12:14,072 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:14,072 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:14,072 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:14,073 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:14,073 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:12:14,073 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,073 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:14,073 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:14,073 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration7_Loop [2024-10-12 00:12:14,073 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:14,073 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:14,073 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,079 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,081 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,082 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,083 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,103 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:14,104 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:12:14,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,105 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2024-10-12 00:12:14,107 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 [2024-10-12 00:12:14,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:14,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:14,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:14,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:14,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:14,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:14,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:14,120 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:12:14,122 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:12:14,122 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 00:12:14,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,124 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2024-10-12 00:12:14,125 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:12:14,125 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:12:14,125 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:12:14,125 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_~i) = 1*rec1_~i Supporting invariants [] [2024-10-12 00:12:14,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:14,136 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:12:14,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:12:14,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:12:14,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:14,215 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 [2024-10-12 00:12:14,215 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 107 transitions. cyclomatic complexity: 23 Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:12:14,249 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 107 transitions. cyclomatic complexity: 23. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 125 transitions. Complement of second has 11 states. [2024-10-12 00:12:14,249 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 [2024-10-12 00:12:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:12:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2024-10-12 00:12:14,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 3 letters. [2024-10-12 00:12:14,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:14,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 14 letters. Loop has 3 letters. [2024-10-12 00:12:14,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:14,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 6 letters. [2024-10-12 00:12:14,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:14,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 125 transitions. [2024-10-12 00:12:14,252 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-10-12 00:12:14,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 95 states and 118 transitions. [2024-10-12 00:12:14,252 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2024-10-12 00:12:14,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2024-10-12 00:12:14,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 118 transitions. [2024-10-12 00:12:14,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:14,253 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 118 transitions. [2024-10-12 00:12:14,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 118 transitions. [2024-10-12 00:12:14,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-10-12 00:12:14,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 59 states have internal predecessors, (61), 23 states have call successors, (24), 16 states have call predecessors, (24), 15 states have return successors, (30), 17 states have call predecessors, (30), 21 states have call successors, (30) [2024-10-12 00:12:14,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2024-10-12 00:12:14,256 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 115 transitions. [2024-10-12 00:12:14,256 INFO L425 stractBuchiCegarLoop]: Abstraction has 93 states and 115 transitions. [2024-10-12 00:12:14,256 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-10-12 00:12:14,256 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 115 transitions. [2024-10-12 00:12:14,257 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-10-12 00:12:14,257 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:14,257 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:14,257 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:14,258 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-12 00:12:14,258 INFO L745 eck$LassoCheckResult]: Stem: 6742#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 6733#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; 6703#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 6712#$Ultimate##0 ~j := #in~j; 6713#L18 assume !(~j <= 0); 6737#L20 call #t~ret3 := rec1(~j - 1);< 6769#$Ultimate##0 ~i := #in~i; 6768#L12 assume !(~i <= 0); 6732#L14 call #t~ret0 := rec1(~i - 2);< 6760#$Ultimate##0 ~i := #in~i; 6767#L12 assume !(~i <= 0); 6706#L14 call #t~ret0 := rec1(~i - 2);< 6705#$Ultimate##0 ~i := #in~i; 6707#L12 assume ~i <= 0;#res := 0; 6793#rec1FINAL assume true; 6792#rec1EXIT >#28#return; 6725#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 6731#$Ultimate##0 ~i := #in~i; 6787#L12 assume ~i <= 0;#res := 0; 6786#rec1FINAL assume true; 6752#rec1EXIT >#30#return; 6753#L14-2 call #t~ret2 := rec1(#t~ret1);< 6778#$Ultimate##0 ~i := #in~i; 6782#L12 assume ~i <= 0;#res := 0; 6781#rec1FINAL assume true; 6776#rec1EXIT >#32#return; 6747#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 6749#rec1FINAL assume true; 6746#rec1EXIT >#28#return; 6728#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 6748#$Ultimate##0 [2024-10-12 00:12:14,258 INFO L747 eck$LassoCheckResult]: Loop: 6748#$Ultimate##0 ~i := #in~i; 6780#L12 assume !(~i <= 0); 6727#L14 call #t~ret0 := rec1(~i - 2);< 6739#$Ultimate##0 ~i := #in~i; 6711#L12 assume !(~i <= 0); 6709#L14 call #t~ret0 := rec1(~i - 2);< 6708#$Ultimate##0 ~i := #in~i; 6710#L12 assume ~i <= 0;#res := 0; 6794#rec1FINAL assume true; 6736#rec1EXIT >#28#return; 6725#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 6731#$Ultimate##0 ~i := #in~i; 6787#L12 assume ~i <= 0;#res := 0; 6786#rec1FINAL assume true; 6752#rec1EXIT >#30#return; 6753#L14-2 call #t~ret2 := rec1(#t~ret1);< 6778#$Ultimate##0 ~i := #in~i; 6782#L12 assume ~i <= 0;#res := 0; 6781#rec1FINAL assume true; 6776#rec1EXIT >#32#return; 6747#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 6749#rec1FINAL assume true; 6746#rec1EXIT >#28#return; 6729#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 6748#$Ultimate##0 [2024-10-12 00:12:14,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1060897207, now seen corresponding path program 1 times [2024-10-12 00:12:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784225094] [2024-10-12 00:12:14,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:14,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:14,263 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:14,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:14,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:14,267 INFO L85 PathProgramCache]: Analyzing trace with hash 245881341, now seen corresponding path program 1 times [2024-10-12 00:12:14,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:14,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787337741] [2024-10-12 00:12:14,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:14,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:14,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:14,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2071488077, now seen corresponding path program 2 times [2024-10-12 00:12:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700334250] [2024-10-12 00:12:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:14,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-12 00:12:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 00:12:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 00:12:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 00:12:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-12 00:12:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-12 00:12:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-12 00:12:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-12 00:12:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-10-12 00:12:14,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:12:14,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700334250] [2024-10-12 00:12:14,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700334250] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:12:14,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349754611] [2024-10-12 00:12:14,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:12:14,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:12:14,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,384 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-12 00:12:14,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:12:14,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:12:14,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:12:14,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-12 00:12:14,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:12:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-10-12 00:12:14,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349754611] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:12:14,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:12:14,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-10-12 00:12:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779882122] [2024-10-12 00:12:14,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:12:14,675 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:14,676 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:14,676 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:14,676 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:14,676 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:14,676 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,676 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:14,676 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:14,676 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration8_Loop [2024-10-12 00:12:14,676 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:14,676 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:14,677 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,679 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,680 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,682 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,683 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,685 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,707 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:14,708 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:14,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,710 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2024-10-12 00:12:14,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:14,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:14,723 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:14,724 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:14,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2024-10-12 00:12:14,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,747 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2024-10-12 00:12:14,749 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:14,749 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:14,760 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:14,760 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:14,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2024-10-12 00:12:14,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,773 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2024-10-12 00:12:14,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:14,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:14,787 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:14,787 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:14,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:14,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,799 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2024-10-12 00:12:14,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:14,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:14,813 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:14,813 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:14,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2024-10-12 00:12:14,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,826 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2024-10-12 00:12:14,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:14,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:14,839 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:14,840 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:14,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:14,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,852 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2024-10-12 00:12:14,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:14,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:14,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,876 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2024-10-12 00:12:14,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:14,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:14,890 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:12:14,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2024-10-12 00:12:14,901 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:14,901 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:14,901 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:14,901 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:14,901 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:12:14,901 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,901 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:14,901 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:14,901 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration8_Loop [2024-10-12 00:12:14,901 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:14,902 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:14,902 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,905 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,906 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,907 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,908 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:14,931 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:14,931 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:12:14,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,934 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2024-10-12 00:12:14,935 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 [2024-10-12 00:12:14,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:14,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:14,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:14,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:14,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:14,946 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:14,946 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:14,948 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:14,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:14,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,960 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2024-10-12 00:12:14,962 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 [2024-10-12 00:12:14,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:14,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:14,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:14,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:14,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:14,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:14,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:14,974 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:14,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2024-10-12 00:12:14,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:14,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:14,986 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:14,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2024-10-12 00:12:14,989 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 [2024-10-12 00:12:15,000 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:15,000 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:15,000 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:15,000 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:15,000 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:15,000 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:15,000 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:15,002 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:15,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:15,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:15,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:15,014 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:15,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2024-10-12 00:12:15,016 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 [2024-10-12 00:12:15,025 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:15,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:15,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:15,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:15,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:15,026 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:15,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:15,027 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:15,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2024-10-12 00:12:15,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:15,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:15,040 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:15,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2024-10-12 00:12:15,041 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 [2024-10-12 00:12:15,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:15,051 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:15,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:15,051 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:15,051 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:15,052 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:15,052 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:15,053 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:15,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:15,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:15,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:15,064 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:15,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2024-10-12 00:12:15,067 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 [2024-10-12 00:12:15,077 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:15,077 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:15,077 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:15,077 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:15,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:15,078 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:15,078 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:15,079 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:12:15,082 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:12:15,082 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 00:12:15,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:15,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:15,084 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:15,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2024-10-12 00:12:15,085 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:12:15,085 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:12:15,085 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:12:15,085 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-12 00:12:15,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2024-10-12 00:12:15,097 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:12:15,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:15,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 00:12:15,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:15,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:15,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2024-10-12 00:12:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:15,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 00:12:15,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 00:12:15,448 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 9 loop predicates [2024-10-12 00:12:15,448 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26 Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:15,491 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Result 101 states and 123 transitions. Complement of second has 9 states. [2024-10-12 00:12:15,491 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 [2024-10-12 00:12:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:15,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2024-10-12 00:12:15,492 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 30 letters. Loop has 24 letters. [2024-10-12 00:12:15,492 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:15,492 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:12:15,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:15,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:15,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 00:12:15,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:15,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 00:12:15,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:15,816 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 00:12:15,817 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 9 loop predicates [2024-10-12 00:12:15,817 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26 Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:15,862 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Result 101 states and 123 transitions. Complement of second has 9 states. [2024-10-12 00:12:15,863 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 [2024-10-12 00:12:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2024-10-12 00:12:15,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 30 letters. Loop has 24 letters. [2024-10-12 00:12:15,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:15,864 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:12:15,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:15,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 00:12:15,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:16,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 00:12:16,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 00:12:16,204 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 9 loop predicates [2024-10-12 00:12:16,205 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26 Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:16,390 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Result 258 states and 304 transitions. Complement of second has 35 states. [2024-10-12 00:12:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2024-10-12 00:12:16,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 40 transitions. [2024-10-12 00:12:16,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 40 transitions. Stem has 30 letters. Loop has 24 letters. [2024-10-12 00:12:16,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:16,391 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:12:16,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:16,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-12 00:12:16,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:16,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-12 00:12:16,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-12 00:12:16,705 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 9 loop predicates [2024-10-12 00:12:16,705 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26 Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:17,021 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 115 transitions. cyclomatic complexity: 26. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Result 410 states and 516 transitions. Complement of second has 88 states. [2024-10-12 00:12:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 2 stem states 13 non-accepting loop states 1 accepting loop states [2024-10-12 00:12:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-10-12 00:12:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 51 transitions. [2024-10-12 00:12:17,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 51 transitions. Stem has 30 letters. Loop has 24 letters. [2024-10-12 00:12:17,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:17,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 51 transitions. Stem has 54 letters. Loop has 24 letters. [2024-10-12 00:12:17,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:17,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 51 transitions. Stem has 30 letters. Loop has 48 letters. [2024-10-12 00:12:17,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:17,023 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 410 states and 516 transitions. [2024-10-12 00:12:17,027 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 62 [2024-10-12 00:12:17,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 410 states to 254 states and 346 transitions. [2024-10-12 00:12:17,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2024-10-12 00:12:17,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 165 [2024-10-12 00:12:17,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 254 states and 346 transitions. [2024-10-12 00:12:17,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:17,029 INFO L218 hiAutomatonCegarLoop]: Abstraction has 254 states and 346 transitions. [2024-10-12 00:12:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states and 346 transitions. [2024-10-12 00:12:17,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 217. [2024-10-12 00:12:17,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 127 states have (on average 1.125984251968504) internal successors, (143), 139 states have internal predecessors, (143), 51 states have call successors, (52), 34 states have call predecessors, (52), 39 states have return successors, (76), 43 states have call predecessors, (76), 49 states have call successors, (76) [2024-10-12 00:12:17,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 271 transitions. [2024-10-12 00:12:17,035 INFO L240 hiAutomatonCegarLoop]: Abstraction has 217 states and 271 transitions. [2024-10-12 00:12:17,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:12:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-12 00:12:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:12:17,035 INFO L87 Difference]: Start difference. First operand 217 states and 271 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-12 00:12:17,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:12:17,066 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-10-12 00:12:17,066 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 38 transitions. [2024-10-12 00:12:17,066 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 00:12:17,066 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2024-10-12 00:12:17,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-12 00:12:17,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-12 00:12:17,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-12 00:12:17,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 00:12:17,066 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:12:17,066 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:12:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 00:12:17,067 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:12:17,067 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-10-12 00:12:17,067 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-12 00:12:17,067 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 00:12:17,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-12 00:12:17,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 12:12:17 BoogieIcfgContainer [2024-10-12 00:12:17,073 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-12 00:12:17,073 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 00:12:17,073 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 00:12:17,073 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 00:12:17,074 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:12:05" (3/4) ... [2024-10-12 00:12:17,075 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 00:12:17,076 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 00:12:17,076 INFO L158 Benchmark]: Toolchain (without parser) took 12273.41ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 105.9MB in the beginning and 80.1MB in the end (delta: 25.8MB). Peak memory consumption was 97.5MB. Max. memory is 16.1GB. [2024-10-12 00:12:17,076 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 96.5MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:12:17,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.98ms. Allocated memory is still 159.4MB. Free memory was 105.4MB in the beginning and 94.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 00:12:17,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.79ms. Allocated memory is still 159.4MB. Free memory was 94.5MB in the beginning and 93.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:12:17,077 INFO L158 Benchmark]: Boogie Preprocessor took 18.17ms. Allocated memory is still 159.4MB. Free memory was 93.3MB in the beginning and 91.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:12:17,077 INFO L158 Benchmark]: RCFGBuilder took 314.99ms. Allocated memory is still 159.4MB. Free memory was 91.9MB in the beginning and 127.3MB in the end (delta: -35.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-12 00:12:17,077 INFO L158 Benchmark]: BuchiAutomizer took 11698.37ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 126.4MB in the beginning and 81.1MB in the end (delta: 45.3MB). Peak memory consumption was 120.5MB. Max. memory is 16.1GB. [2024-10-12 00:12:17,077 INFO L158 Benchmark]: Witness Printer took 2.47ms. Allocated memory is still 232.8MB. Free memory was 81.1MB in the beginning and 80.1MB in the end (delta: 988.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:12:17,078 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 96.5MB. Free memory is still 58.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.98ms. Allocated memory is still 159.4MB. Free memory was 105.4MB in the beginning and 94.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.79ms. Allocated memory is still 159.4MB. Free memory was 94.5MB in the beginning and 93.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.17ms. Allocated memory is still 159.4MB. Free memory was 93.3MB in the beginning and 91.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 314.99ms. Allocated memory is still 159.4MB. Free memory was 91.9MB in the beginning and 127.3MB in the end (delta: -35.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 11698.37ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 126.4MB in the beginning and 81.1MB in the end (delta: 45.3MB). Peak memory consumption was 120.5MB. Max. memory is 16.1GB. * Witness Printer took 2.47ms. Allocated memory is still 232.8MB. Free memory was 81.1MB in the beginning and 80.1MB in the end (delta: 988.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret3 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (5 trivial, 5 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(j) and consists of 11 locations. One deterministic module has affine ranking function \old(i) and consists of 5 locations. One deterministic module has affine ranking function \old(i) and consists of 6 locations. One deterministic module has affine ranking function null and consists of 11 locations. One deterministic module has affine ranking function i and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 6 locations. One nondeterministic module has affine ranking function \old(i) and consists of 16 locations. 5 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.6s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 6.5s. Construction of modules took 0.7s. Büchi inclusion checks took 4.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 249 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 1, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 38/58 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 339 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 911 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 602 mSDsCounter, 287 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 984 IncrementalHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 287 mSolverCounterUnsat, 309 mSDtfsCounter, 984 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT3 conc0 concLT3 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf92 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-12 00:12:17,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:17,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-10-12 00:12:17,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-10-12 00:12:17,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-10-12 00:12:17,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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