./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 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 23:47:36,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 23:47:36,055 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-24 23:47:36,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 23:47:36,061 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 23:47:36,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 23:47:36,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 23:47:36,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 23:47:36,088 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 23:47:36,089 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 23:47:36,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 23:47:36,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 23:47:36,091 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 23:47:36,091 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-24 23:47:36,093 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-24 23:47:36,093 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-24 23:47:36,093 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-24 23:47:36,093 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-24 23:47:36,094 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-24 23:47:36,094 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 23:47:36,094 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-24 23:47:36,095 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 23:47:36,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 23:47:36,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-24 23:47:36,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-24 23:47:36,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-24 23:47:36,098 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 23:47:36,098 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 23:47:36,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 23:47:36,099 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-24 23:47:36,099 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 23:47:36,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 23:47:36,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 23:47:36,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 23:47:36,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 23:47:36,101 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-24 23:47:36,101 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c [2024-10-24 23:47:36,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 23:47:36,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 23:47:36,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 23:47:36,424 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 23:47:36,424 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 23:47:36,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2024-10-24 23:47:37,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 23:47:37,881 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 23:47:37,882 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2024-10-24 23:47:37,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abe884296/f5f051cb2a4e4814ac6c38976419a40a/FLAGdbd69e7ec [2024-10-24 23:47:38,296 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abe884296/f5f051cb2a4e4814ac6c38976419a40a [2024-10-24 23:47:38,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 23:47:38,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 23:47:38,301 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 23:47:38,301 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 23:47:38,306 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 23:47:38,307 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eee2dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38, skipping insertion in model container [2024-10-24 23:47:38,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,322 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 23:47:38,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:47:38,448 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 23:47:38,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 23:47:38,471 INFO L204 MainTranslator]: Completed translation [2024-10-24 23:47:38,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38 WrapperNode [2024-10-24 23:47:38,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 23:47:38,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 23:47:38,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 23:47:38,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 23:47:38,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,494 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7 [2024-10-24 23:47:38,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 23:47:38,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 23:47:38,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 23:47:38,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 23:47:38,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,504 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,509 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-24 23:47:38,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,514 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 23:47:38,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 23:47:38,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 23:47:38,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 23:47:38,515 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (1/1) ... [2024-10-24 23:47:38,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:38,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:38,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:38,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-24 23:47:38,627 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2024-10-24 23:47:38,628 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2024-10-24 23:47:38,628 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2024-10-24 23:47:38,629 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2024-10-24 23:47:38,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 23:47:38,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 23:47:38,696 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 23:47:38,698 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 23:47:38,837 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-24 23:47:38,838 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 23:47:38,848 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 23:47:38,848 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 23:47:38,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:47:38 BoogieIcfgContainer [2024-10-24 23:47:38,849 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 23:47:38,849 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-24 23:47:38,850 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-24 23:47:38,853 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-24 23:47:38,854 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:47:38,854 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 24.10 11:47:38" (1/3) ... [2024-10-24 23:47:38,855 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56627345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:47:38, skipping insertion in model container [2024-10-24 23:47:38,855 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:47:38,855 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:47:38" (2/3) ... [2024-10-24 23:47:38,856 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56627345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 24.10 11:47:38, skipping insertion in model container [2024-10-24 23:47:38,856 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-24 23:47:38,856 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:47:38" (3/3) ... [2024-10-24 23:47:38,857 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1b.c [2024-10-24 23:47:38,913 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-24 23:47:38,913 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-24 23:47:38,914 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-24 23:47:38,914 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-24 23:47:38,914 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-24 23:47:38,914 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-24 23:47:38,914 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-24 23:47:38,914 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-24 23:47:38,918 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) [2024-10-24 23:47:38,935 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-24 23:47:38,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:38,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:38,940 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-24 23:47:38,940 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:38,940 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-24 23:47:38,940 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) [2024-10-24 23:47:38,942 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-24 23:47:38,942 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:38,942 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:38,943 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-24 23:47:38,943 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:38,950 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 [2024-10-24 23:47:38,952 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 [2024-10-24 23:47:38,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:38,957 INFO L85 PathProgramCache]: Analyzing trace with hash 48738, now seen corresponding path program 1 times [2024-10-24 23:47:38,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:38,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134863215] [2024-10-24 23:47:38,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:38,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:39,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:39,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:39,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:39,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1074209557, now seen corresponding path program 1 times [2024-10-24 23:47:39,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:39,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234765385] [2024-10-24 23:47:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:39,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:39,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:39,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:39,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:39,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1203131828, now seen corresponding path program 1 times [2024-10-24 23:47:39,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:39,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399910241] [2024-10-24 23:47:39,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:39,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:39,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:39,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:39,202 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:39,202 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:39,202 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:39,202 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:39,203 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:39,203 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,203 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:39,203 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:39,203 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration1_Loop [2024-10-24 23:47:39,203 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:39,203 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:39,214 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,221 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,224 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,228 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,237 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,289 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:39,290 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:39,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,298 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-24 23:47:39,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:39,301 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:39,316 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:39,317 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_~j=0} Honda state: {rec2_~j=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:39,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-24 23:47:39,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-24 23:47:39,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:39,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:39,343 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:39,343 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:39,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-24 23:47:39,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,357 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-24 23:47:39,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:39,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:39,375 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:39,375 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret4=0} Honda state: {rec2_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:39,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-24 23:47:39,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,406 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-24 23:47:39,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:39,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:39,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-24 23:47:39,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,442 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-24 23:47:39,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:39,444 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:39,458 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:47:39,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:39,470 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:39,470 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:39,470 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:39,470 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:39,471 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:39,471 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,471 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:39,471 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:39,471 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration1_Loop [2024-10-24 23:47:39,471 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:39,471 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:39,472 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,475 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,478 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,480 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,485 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:39,511 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:39,515 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:39,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-24 23:47:39,522 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 [2024-10-24 23:47:39,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:39,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:39,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:39,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:39,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:39,536 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:39,536 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:39,538 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:39,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-24 23:47:39,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,558 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-24 23:47:39,561 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 [2024-10-24 23:47:39,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:39,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:39,572 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:39,572 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:39,572 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:39,573 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:39,573 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:39,574 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:39,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-24 23:47:39,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,588 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-24 23:47:39,592 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 [2024-10-24 23:47:39,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:39,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:39,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:39,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:39,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:39,603 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:39,604 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:39,605 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:39,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:39,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,621 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-24 23:47:39,622 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 [2024-10-24 23:47:39,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:39,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:39,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:39,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:39,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:39,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:39,634 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:39,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:39,638 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:47:39,639 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-24 23:47:39,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:39,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:39,661 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:39,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-24 23:47:39,664 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:39,664 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:39,664 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:39,665 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2024-10-24 23:47:39,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-10-24 23:47:39,678 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:39,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:39,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 23:47:39,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:39,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-24 23:47:39,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:39,867 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 [2024-10-24 23:47:39,869 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) [2024-10-24 23:47:40,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-24 23:47:40,449 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. [2024-10-24 23:47:40,453 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 [2024-10-24 23:47:40,458 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) [2024-10-24 23:47:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 55 transitions. [2024-10-24 23:47:40,463 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 55 transitions. Stem has 3 letters. Loop has 8 letters. [2024-10-24 23:47:40,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:40,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 55 transitions. Stem has 11 letters. Loop has 8 letters. [2024-10-24 23:47:40,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:40,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 55 transitions. Stem has 3 letters. Loop has 16 letters. [2024-10-24 23:47:40,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:40,467 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 187 states and 266 transitions. [2024-10-24 23:47:40,484 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-24 23:47:40,491 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 187 states to 83 states and 121 transitions. [2024-10-24 23:47:40,492 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2024-10-24 23:47:40,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2024-10-24 23:47:40,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 121 transitions. [2024-10-24 23:47:40,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:40,494 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83 states and 121 transitions. [2024-10-24 23:47:40,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 121 transitions. [2024-10-24 23:47:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2024-10-24 23:47:40,520 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) [2024-10-24 23:47:40,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 84 transitions. [2024-10-24 23:47:40,522 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 84 transitions. [2024-10-24 23:47:40,522 INFO L425 stractBuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2024-10-24 23:47:40,522 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-24 23:47:40,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 84 transitions. [2024-10-24 23:47:40,523 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-24 23:47:40,524 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:40,524 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:40,524 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:40,524 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:47:40,524 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#$Ultimate##0 [2024-10-24 23:47:40,525 INFO L747 eck$LassoCheckResult]: Loop: 375#$Ultimate##0 ~i := #in~i; 390#L12 assume !(~i <= 0); 362#L14 call #t~ret0 := rec1(~i - 2);< 375#$Ultimate##0 [2024-10-24 23:47:40,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:40,525 INFO L85 PathProgramCache]: Analyzing trace with hash 838970620, now seen corresponding path program 1 times [2024-10-24 23:47:40,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772373540] [2024-10-24 23:47:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:40,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:40,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:40,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:40,538 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 1 times [2024-10-24 23:47:40,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:40,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935878043] [2024-10-24 23:47:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:40,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:40,541 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:40,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:40,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1359045147, now seen corresponding path program 2 times [2024-10-24 23:47:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613884817] [2024-10-24 23:47:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:40,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:40,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:40,590 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:40,591 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:40,591 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:40,591 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:40,591 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:40,591 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,591 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:40,591 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:40,591 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration2_Loop [2024-10-24 23:47:40,591 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:40,591 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:40,592 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,596 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,598 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,600 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,602 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,627 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:40,628 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:40,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,631 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-24 23:47:40,633 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:40,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:40,645 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:40,646 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:40,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-24 23:47:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,658 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-24 23:47:40,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:40,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:40,672 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:40,672 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:40,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-24 23:47:40,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,692 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-24 23:47:40,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:40,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:40,706 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:40,706 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:40,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-24 23:47:40,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,719 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-24 23:47:40,721 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:40,721 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:40,733 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:40,733 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:40,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-24 23:47:40,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,746 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-24 23:47:40,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:40,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:40,759 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:40,759 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:40,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-24 23:47:40,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,773 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-24 23:47:40,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:40,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:40,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-10-24 23:47:40,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,800 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-24 23:47:40,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:40,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:40,851 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:47:40,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-24 23:47:40,857 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:40,857 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:40,857 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:40,857 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:40,857 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:40,857 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,857 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:40,857 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:40,857 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration2_Loop [2024-10-24 23:47:40,857 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:40,857 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:40,858 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,875 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,880 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,882 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,884 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,889 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:40,912 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:40,912 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:40,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,917 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-24 23:47:40,918 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 [2024-10-24 23:47:40,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:40,930 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:40,930 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:40,930 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:40,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:40,931 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:40,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:40,932 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:40,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-24 23:47:40,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,947 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-24 23:47:40,950 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 [2024-10-24 23:47:40,961 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:40,961 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:40,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:40,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:40,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:40,962 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:40,962 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:40,968 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:40,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:40,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:40,982 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:40,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-24 23:47:40,984 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 [2024-10-24 23:47:40,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:40,995 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:40,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:40,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:40,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:40,996 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:40,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:40,997 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:41,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:41,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:41,010 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:41,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-24 23:47:41,012 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 [2024-10-24 23:47:41,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:41,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:41,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:41,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:41,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:41,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:41,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:41,024 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:41,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-10-24 23:47:41,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:41,043 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:41,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-24 23:47:41,046 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 [2024-10-24 23:47:41,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:41,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:41,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:41,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:41,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:41,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:41,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:41,061 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:41,062 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-24 23:47:41,063 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:47:41,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:41,064 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:41,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-24 23:47:41,066 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:41,066 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:41,066 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:41,066 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-24 23:47:41,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:41,078 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:41,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:41,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:41,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:47:41,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:41,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:41,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:41,259 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 [2024-10-24 23:47:41,262 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) [2024-10-24 23:47:41,349 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. [2024-10-24 23:47:41,354 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 [2024-10-24 23:47:41,355 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) [2024-10-24 23:47:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2024-10-24 23:47:41,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 9 letters. Loop has 3 letters. [2024-10-24 23:47:41,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:41,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2024-10-24 23:47:41,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:41,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 9 letters. Loop has 6 letters. [2024-10-24 23:47:41,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:41,360 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 150 transitions. [2024-10-24 23:47:41,362 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-24 23:47:41,367 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 94 states and 138 transitions. [2024-10-24 23:47:41,371 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2024-10-24 23:47:41,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2024-10-24 23:47:41,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 138 transitions. [2024-10-24 23:47:41,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:41,377 INFO L218 hiAutomatonCegarLoop]: Abstraction has 94 states and 138 transitions. [2024-10-24 23:47:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 138 transitions. [2024-10-24 23:47:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2024-10-24 23:47:41,391 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) [2024-10-24 23:47:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 130 transitions. [2024-10-24 23:47:41,396 INFO L240 hiAutomatonCegarLoop]: Abstraction has 90 states and 130 transitions. [2024-10-24 23:47:41,396 INFO L425 stractBuchiCegarLoop]: Abstraction has 90 states and 130 transitions. [2024-10-24 23:47:41,396 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-24 23:47:41,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 130 transitions. [2024-10-24 23:47:41,397 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-24 23:47:41,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:41,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:41,398 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:41,398 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:47:41,398 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 [2024-10-24 23:47:41,398 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 [2024-10-24 23:47:41,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:41,401 INFO L85 PathProgramCache]: Analyzing trace with hash 372282091, now seen corresponding path program 1 times [2024-10-24 23:47:41,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:41,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703410685] [2024-10-24 23:47:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:41,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:41,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:41,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:41,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:41,438 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 2 times [2024-10-24 23:47:41,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:41,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312018529] [2024-10-24 23:47:41,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:41,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:41,445 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:41,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:41,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:41,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1050214860, now seen corresponding path program 2 times [2024-10-24 23:47:41,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:41,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479060461] [2024-10-24 23:47:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:41,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:41,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 23:47:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:41,611 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:47:41,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:47:41,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479060461] [2024-10-24 23:47:41,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479060461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:47:41,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 23:47:41,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 23:47:41,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357329490] [2024-10-24 23:47:41,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:47:41,647 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:41,647 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:41,647 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:41,647 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:41,647 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:41,648 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,648 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:41,648 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:41,648 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration3_Loop [2024-10-24 23:47:41,648 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:41,648 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:41,648 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,659 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,661 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,663 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,686 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:41,686 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:41,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:41,688 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:41,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-24 23:47:41,690 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:41,690 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:41,701 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:41,702 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:41,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-10-24 23:47:41,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:41,715 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:41,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-24 23:47:41,717 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:41,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:41,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:41,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:41,742 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:41,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-24 23:47:41,745 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:41,745 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:41,797 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:47:41,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:41,802 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:41,802 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:41,802 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:41,802 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:41,802 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:41,802 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,802 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:41,802 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:41,802 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration3_Loop [2024-10-24 23:47:41,802 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:41,802 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:41,803 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,811 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,813 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,819 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:41,845 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:41,845 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:41,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:41,847 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:41,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-24 23:47:41,849 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 [2024-10-24 23:47:41,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:41,858 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:41,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:41,859 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:41,859 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:41,859 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:41,859 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:41,862 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:41,864 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-24 23:47:41,864 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:47:41,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:41,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:41,868 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:41,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-24 23:47:41,873 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:41,874 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:41,874 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:41,874 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-24 23:47:41,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-10-24 23:47:41,887 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:41,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:41,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 23:47:41,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:41,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:41,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-10-24 23:47:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:42,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:42,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:42,029 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 [2024-10-24 23:47:42,029 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) [2024-10-24 23:47:42,102 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. [2024-10-24 23:47:42,103 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 [2024-10-24 23:47:42,103 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) [2024-10-24 23:47:42,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2024-10-24 23:47:42,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 14 letters. Loop has 3 letters. [2024-10-24 23:47:42,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:42,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 17 letters. Loop has 3 letters. [2024-10-24 23:47:42,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:42,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 14 letters. Loop has 6 letters. [2024-10-24 23:47:42,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:42,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 194 transitions. [2024-10-24 23:47:42,116 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-24 23:47:42,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 123 states and 182 transitions. [2024-10-24 23:47:42,122 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2024-10-24 23:47:42,122 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2024-10-24 23:47:42,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 182 transitions. [2024-10-24 23:47:42,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:42,123 INFO L218 hiAutomatonCegarLoop]: Abstraction has 123 states and 182 transitions. [2024-10-24 23:47:42,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 182 transitions. [2024-10-24 23:47:42,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2024-10-24 23:47:42,139 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) [2024-10-24 23:47:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 166 transitions. [2024-10-24 23:47:42,140 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 166 transitions. [2024-10-24 23:47:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:47:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:47:42,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:47:42,143 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) [2024-10-24 23:47:42,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:47:42,204 INFO L93 Difference]: Finished difference Result 124 states and 176 transitions. [2024-10-24 23:47:42,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 176 transitions. [2024-10-24 23:47:42,205 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-10-24 23:47:42,213 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 122 states and 174 transitions. [2024-10-24 23:47:42,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2024-10-24 23:47:42,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2024-10-24 23:47:42,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 174 transitions. [2024-10-24 23:47:42,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:42,214 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 174 transitions. [2024-10-24 23:47:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 174 transitions. [2024-10-24 23:47:42,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2024-10-24 23:47:42,226 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) [2024-10-24 23:47:42,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 144 transitions. [2024-10-24 23:47:42,232 INFO L240 hiAutomatonCegarLoop]: Abstraction has 102 states and 144 transitions. [2024-10-24 23:47:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:47:42,233 INFO L425 stractBuchiCegarLoop]: Abstraction has 102 states and 144 transitions. [2024-10-24 23:47:42,233 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-24 23:47:42,233 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 144 transitions. [2024-10-24 23:47:42,234 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-24 23:47:42,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:42,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:42,235 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:42,235 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:42,235 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#$Ultimate##0 ~i := #in~i; 1195#L12 assume ~i <= 0;#res := 0; 1190#rec1FINAL assume true; 1191#rec1EXIT >#28#return; 1152#L14-1 [2024-10-24 23:47:42,235 INFO L747 eck$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 [2024-10-24 23:47:42,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:42,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1325197585, now seen corresponding path program 1 times [2024-10-24 23:47:42,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:42,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041705795] [2024-10-24 23:47:42,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:42,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:42,255 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:42,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:42,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 949089090, now seen corresponding path program 1 times [2024-10-24 23:47:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397498300] [2024-10-24 23:47:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-24 23:47:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 23:47:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-24 23:47:42,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:47:42,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397498300] [2024-10-24 23:47:42,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397498300] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:47:42,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049531318] [2024-10-24 23:47:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:42,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:47:42,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:42,363 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:47:42,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-24 23:47:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 23:47:42,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:42,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 23:47:42,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049531318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 23:47:42,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 23:47:42,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-10-24 23:47:42,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18504985] [2024-10-24 23:47:42,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 23:47:42,404 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-24 23:47:42,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:47:42,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 23:47:42,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 23:47:42,405 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) [2024-10-24 23:47:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:47:42,429 INFO L93 Difference]: Finished difference Result 118 states and 162 transitions. [2024-10-24 23:47:42,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 162 transitions. [2024-10-24 23:47:42,431 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-24 23:47:42,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 118 states and 162 transitions. [2024-10-24 23:47:42,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2024-10-24 23:47:42,433 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2024-10-24 23:47:42,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 162 transitions. [2024-10-24 23:47:42,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:42,433 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 162 transitions. [2024-10-24 23:47:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 162 transitions. [2024-10-24 23:47:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2024-10-24 23:47:42,438 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) [2024-10-24 23:47:42,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2024-10-24 23:47:42,439 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-10-24 23:47:42,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 23:47:42,440 INFO L425 stractBuchiCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-10-24 23:47:42,440 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-24 23:47:42,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 158 transitions. [2024-10-24 23:47:42,441 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-10-24 23:47:42,441 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:42,441 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:42,442 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:42,442 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:42,442 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#$Ultimate##0 ~i := #in~i; 1430#L12 assume ~i <= 0;#res := 0; 1469#rec1FINAL assume true; 1470#rec1EXIT >#32#return; 1437#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1440#rec1FINAL assume true; 1483#rec1EXIT >#34#return; 1420#L20-1 [2024-10-24 23:47:42,442 INFO L747 eck$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 [2024-10-24 23:47:42,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:42,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1231361643, now seen corresponding path program 1 times [2024-10-24 23:47:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:42,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631057633] [2024-10-24 23:47:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:42,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:42,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:42,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:42,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:42,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1591101301, now seen corresponding path program 1 times [2024-10-24 23:47:42,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:42,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646379864] [2024-10-24 23:47:42,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:42,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:42,460 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:42,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:42,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:42,465 INFO L85 PathProgramCache]: Analyzing trace with hash 774680821, now seen corresponding path program 1 times [2024-10-24 23:47:42,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:42,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182565618] [2024-10-24 23:47:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 23:47:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 23:47:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 23:47:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 23:47:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 23:47:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 23:47:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 23:47:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 23:47:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 23:47:42,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:47:42,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182565618] [2024-10-24 23:47:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182565618] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:47:42,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693710140] [2024-10-24 23:47:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:42,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:47:42,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:42,688 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:47:42,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-24 23:47:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:42,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:47:42,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 23:47:42,760 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:47:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-10-24 23:47:42,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693710140] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:47:42,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:47:42,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 12 [2024-10-24 23:47:42,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450363010] [2024-10-24 23:47:42,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:47:43,148 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:43,149 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:43,149 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:43,149 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:43,149 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:43,149 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:43,149 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:43,149 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:43,149 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration5_Loop [2024-10-24 23:47:43,149 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:43,149 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:43,150 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:43,156 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:43,158 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:43,182 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:43,183 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:43,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:43,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:43,184 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:43,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-24 23:47:43,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:43,186 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:43,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:43,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:43,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:43,217 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:43,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-10-24 23:47:43,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:43,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:44,298 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:47:44,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:44,304 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:44,304 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:44,304 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:44,304 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:44,304 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:44,304 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:44,304 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:44,304 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:44,304 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration5_Loop [2024-10-24 23:47:44,304 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:44,304 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:44,305 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:44,312 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:44,314 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:44,338 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:44,338 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:44,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:44,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:44,340 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:44,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-10-24 23:47:44,342 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 [2024-10-24 23:47:44,352 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:44,352 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:44,352 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:44,352 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:44,352 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:44,353 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:44,353 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:44,357 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:44,360 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:47:44,360 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-24 23:47:44,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:44,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:44,361 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:44,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-10-24 23:47:44,363 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:44,363 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:44,363 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:44,363 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#t~ret3) = 1*rec2_#t~ret3 Supporting invariants [] [2024-10-24 23:47:44,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2024-10-24 23:47:44,374 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:44,375 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret3 [2024-10-24 23:47:44,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:44,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 23:47:44,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:44,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 23:47:44,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:44,752 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 23:47:44,753 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 [2024-10-24 23:47:44,756 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) [2024-10-24 23:47:45,067 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. [2024-10-24 23:47:45,068 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 [2024-10-24 23:47:45,068 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) [2024-10-24 23:47:45,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 53 transitions. [2024-10-24 23:47:45,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 26 letters. Loop has 24 letters. [2024-10-24 23:47:45,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:45,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 50 letters. Loop has 24 letters. [2024-10-24 23:47:45,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:45,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 26 letters. Loop has 48 letters. [2024-10-24 23:47:45,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:45,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 585 states and 904 transitions. [2024-10-24 23:47:45,079 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2024-10-24 23:47:45,085 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 585 states to 433 states and 650 transitions. [2024-10-24 23:47:45,085 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2024-10-24 23:47:45,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 142 [2024-10-24 23:47:45,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 433 states and 650 transitions. [2024-10-24 23:47:45,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:45,086 INFO L218 hiAutomatonCegarLoop]: Abstraction has 433 states and 650 transitions. [2024-10-24 23:47:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states and 650 transitions. [2024-10-24 23:47:45,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 384. [2024-10-24 23:47:45,103 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) [2024-10-24 23:47:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 535 transitions. [2024-10-24 23:47:45,106 INFO L240 hiAutomatonCegarLoop]: Abstraction has 384 states and 535 transitions. [2024-10-24 23:47:45,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:47:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 23:47:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-24 23:47:45,107 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) [2024-10-24 23:47:45,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:47:45,207 INFO L93 Difference]: Finished difference Result 443 states and 646 transitions. [2024-10-24 23:47:45,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 443 states and 646 transitions. [2024-10-24 23:47:45,211 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2024-10-24 23:47:45,215 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 443 states to 350 states and 496 transitions. [2024-10-24 23:47:45,215 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 132 [2024-10-24 23:47:45,215 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 136 [2024-10-24 23:47:45,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 350 states and 496 transitions. [2024-10-24 23:47:45,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:45,215 INFO L218 hiAutomatonCegarLoop]: Abstraction has 350 states and 496 transitions. [2024-10-24 23:47:45,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states and 496 transitions. [2024-10-24 23:47:45,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 315. [2024-10-24 23:47:45,225 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) [2024-10-24 23:47:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 416 transitions. [2024-10-24 23:47:45,251 INFO L240 hiAutomatonCegarLoop]: Abstraction has 315 states and 416 transitions. [2024-10-24 23:47:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 23:47:45,255 INFO L425 stractBuchiCegarLoop]: Abstraction has 315 states and 416 transitions. [2024-10-24 23:47:45,255 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-24 23:47:45,255 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 315 states and 416 transitions. [2024-10-24 23:47:45,257 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2024-10-24 23:47:45,257 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:45,257 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:45,257 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] [2024-10-24 23:47:45,257 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:47:45,258 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#$Ultimate##0 [2024-10-24 23:47:45,258 INFO L747 eck$LassoCheckResult]: Loop: 3620#$Ultimate##0 ~i := #in~i; 3711#L12 assume !(~i <= 0); 3696#L14 call #t~ret0 := rec1(~i - 2);< 3620#$Ultimate##0 [2024-10-24 23:47:45,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1565705522, now seen corresponding path program 2 times [2024-10-24 23:47:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988395459] [2024-10-24 23:47:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:45,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:45,274 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-10-24 23:47:45,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-10-24 23:47:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:45,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 23:47:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:45,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 23:47:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:45,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 23:47:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 23:47:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:47:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988395459] [2024-10-24 23:47:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988395459] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:47:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341717715] [2024-10-24 23:47:45,348 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:47:45,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:47:45,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,350 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-24 23:47:45,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:47:45,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:47:45,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 23:47:45,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 23:47:45,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:47:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 23:47:45,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341717715] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:47:45,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:47:45,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-10-24 23:47:45,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349897895] [2024-10-24 23:47:45,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:47:45,483 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-24 23:47:45,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:45,483 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 3 times [2024-10-24 23:47:45,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:45,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592680608] [2024-10-24 23:47:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:45,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:45,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:45,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:45,507 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:45,507 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:45,507 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:45,507 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:45,508 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:45,508 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,508 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:45,508 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:45,508 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration6_Loop [2024-10-24 23:47:45,508 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:45,508 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:45,508 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,510 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,511 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,513 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,518 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,536 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:45,537 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:45,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,538 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-10-24 23:47:45,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:45,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:45,555 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:45,555 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:45,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-10-24 23:47:45,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,573 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-10-24 23:47:45,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:45,575 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:45,586 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:45,587 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:45,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2024-10-24 23:47:45,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,600 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-10-24 23:47:45,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:45,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:45,613 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:45,614 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:45,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:45,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,625 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-10-24 23:47:45,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:45,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:45,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2024-10-24 23:47:45,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,659 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-10-24 23:47:45,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:45,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:45,687 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:47:45,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:45,692 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:45,692 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:45,692 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:45,692 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:45,692 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:45,692 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,693 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:45,693 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:45,693 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration6_Loop [2024-10-24 23:47:45,693 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:45,693 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:45,693 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,697 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,698 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,702 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,704 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:45,724 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:45,724 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:45,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,726 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-10-24 23:47:45,730 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 [2024-10-24 23:47:45,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:45,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:45,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:45,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:45,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:45,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:45,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:45,742 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:45,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2024-10-24 23:47:45,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,762 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-10-24 23:47:45,764 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 [2024-10-24 23:47:45,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:45,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:45,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:45,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:45,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:45,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:45,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:45,776 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:45,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2024-10-24 23:47:45,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,789 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-10-24 23:47:45,792 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 [2024-10-24 23:47:45,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:45,802 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:45,802 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:45,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:45,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:45,803 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:45,803 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:45,806 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:45,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2024-10-24 23:47:45,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,819 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-10-24 23:47:45,821 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 [2024-10-24 23:47:45,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:45,831 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:45,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:45,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:45,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:45,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:45,832 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:45,833 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:45,835 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-24 23:47:45,835 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-24 23:47:45,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:45,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:45,841 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:45,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2024-10-24 23:47:45,842 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:45,843 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:45,843 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:45,843 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-24 23:47:45,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2024-10-24 23:47:45,854 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:45,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:45,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 23:47:45,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:46,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:46,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:46,215 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 [2024-10-24 23:47:46,215 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) [2024-10-24 23:47:46,309 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. [2024-10-24 23:47:46,312 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 [2024-10-24 23:47:46,313 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) [2024-10-24 23:47:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2024-10-24 23:47:46,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 33 letters. Loop has 3 letters. [2024-10-24 23:47:46,313 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:46,313 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:47:46,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:46,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 23:47:46,390 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:46,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:46,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:46,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:46,715 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 [2024-10-24 23:47:46,716 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) [2024-10-24 23:47:46,807 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. [2024-10-24 23:47:46,808 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 [2024-10-24 23:47:46,809 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) [2024-10-24 23:47:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2024-10-24 23:47:46,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 33 letters. Loop has 3 letters. [2024-10-24 23:47:46,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:46,810 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:47:46,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:46,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-24 23:47:46,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:47,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:47,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:47,150 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 [2024-10-24 23:47:47,150 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) [2024-10-24 23:47:47,222 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. [2024-10-24 23:47:47,226 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 [2024-10-24 23:47:47,226 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) [2024-10-24 23:47:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2024-10-24 23:47:47,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 33 letters. Loop has 3 letters. [2024-10-24 23:47:47,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:47,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 36 letters. Loop has 3 letters. [2024-10-24 23:47:47,228 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:47,229 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 33 letters. Loop has 6 letters. [2024-10-24 23:47:47,229 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:47,229 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 486 states and 617 transitions. [2024-10-24 23:47:47,233 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 26 [2024-10-24 23:47:47,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 486 states to 396 states and 527 transitions. [2024-10-24 23:47:47,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 130 [2024-10-24 23:47:47,237 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 137 [2024-10-24 23:47:47,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 396 states and 527 transitions. [2024-10-24 23:47:47,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:47,237 INFO L218 hiAutomatonCegarLoop]: Abstraction has 396 states and 527 transitions. [2024-10-24 23:47:47,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states and 527 transitions. [2024-10-24 23:47:47,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 352. [2024-10-24 23:47:47,244 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) [2024-10-24 23:47:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 457 transitions. [2024-10-24 23:47:47,246 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 457 transitions. [2024-10-24 23:47:47,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:47:47,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 23:47:47,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-10-24 23:47:47,247 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) [2024-10-24 23:47:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:47:47,318 INFO L93 Difference]: Finished difference Result 379 states and 514 transitions. [2024-10-24 23:47:47,318 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 379 states and 514 transitions. [2024-10-24 23:47:47,321 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-10-24 23:47:47,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 379 states to 105 states and 143 transitions. [2024-10-24 23:47:47,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2024-10-24 23:47:47,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 99 [2024-10-24 23:47:47,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 143 transitions. [2024-10-24 23:47:47,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:47,323 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 143 transitions. [2024-10-24 23:47:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 143 transitions. [2024-10-24 23:47:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2024-10-24 23:47:47,325 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) [2024-10-24 23:47:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2024-10-24 23:47:47,326 INFO L240 hiAutomatonCegarLoop]: Abstraction has 87 states and 107 transitions. [2024-10-24 23:47:47,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 23:47:47,327 INFO L425 stractBuchiCegarLoop]: Abstraction has 87 states and 107 transitions. [2024-10-24 23:47:47,327 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-24 23:47:47,327 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 107 transitions. [2024-10-24 23:47:47,327 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-10-24 23:47:47,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:47,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:47,328 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:47,328 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-24 23:47:47,328 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 [2024-10-24 23:47:47,328 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 [2024-10-24 23:47:47,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:47,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1203085824, now seen corresponding path program 3 times [2024-10-24 23:47:47,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:47,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205644732] [2024-10-24 23:47:47,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:47,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:47,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:47,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:47,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash 55742, now seen corresponding path program 4 times [2024-10-24 23:47:47,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:47,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360876188] [2024-10-24 23:47:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:47,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:47,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:47,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:47,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:47,344 INFO L85 PathProgramCache]: Analyzing trace with hash 372328287, now seen corresponding path program 4 times [2024-10-24 23:47:47,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:47,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666188682] [2024-10-24 23:47:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:47,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:47,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:47,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:47,409 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:47,409 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:47,409 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:47,409 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:47,409 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:47,409 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:47,409 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:47,409 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:47,409 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration7_Loop [2024-10-24 23:47:47,410 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:47,410 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:47,410 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:47,412 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:47,414 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:47,419 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:47,421 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:47,445 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:47,445 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:47,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:47,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:47,447 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:47,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:47,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2024-10-24 23:47:47,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:47,463 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:47,463 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:47,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:47,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:47,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:47,479 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:47,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2024-10-24 23:47:47,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:47,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:47,494 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:47,494 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:47,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:47,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:47,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:47,508 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:47,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2024-10-24 23:47:47,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:47,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:47,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:47,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:47,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:47,542 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:47,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2024-10-24 23:47:47,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:47,547 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:48,555 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:47:48,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:48,560 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:48,560 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:48,560 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:48,560 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:48,561 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:48,561 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:48,561 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:48,561 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:48,561 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration7_Loop [2024-10-24 23:47:48,561 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:48,561 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:48,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:48,568 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:48,571 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:48,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:48,574 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:48,597 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:48,597 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:48,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:48,598 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:48,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2024-10-24 23:47:48,600 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 [2024-10-24 23:47:48,610 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:48,610 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:48,610 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:48,610 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:48,610 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:48,611 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:48,611 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:48,613 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:48,616 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:47:48,617 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-24 23:47:48,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:48,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:48,619 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:48,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2024-10-24 23:47:48,621 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:48,621 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:48,621 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:48,621 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_~i) = 1*rec1_~i Supporting invariants [] [2024-10-24 23:47:48,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:48,632 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:48,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 23:47:48,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:48,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 23:47:48,701 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 [2024-10-24 23:47:48,701 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) [2024-10-24 23:47:48,729 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. [2024-10-24 23:47:48,731 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 [2024-10-24 23:47:48,731 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) [2024-10-24 23:47:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2024-10-24 23:47:48,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 3 letters. [2024-10-24 23:47:48,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:48,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 14 letters. Loop has 3 letters. [2024-10-24 23:47:48,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:48,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 6 letters. [2024-10-24 23:47:48,732 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:48,732 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 125 transitions. [2024-10-24 23:47:48,733 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-10-24 23:47:48,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 95 states and 118 transitions. [2024-10-24 23:47:48,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2024-10-24 23:47:48,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2024-10-24 23:47:48,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 118 transitions. [2024-10-24 23:47:48,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:48,739 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 118 transitions. [2024-10-24 23:47:48,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 118 transitions. [2024-10-24 23:47:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-10-24 23:47:48,744 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) [2024-10-24 23:47:48,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2024-10-24 23:47:48,744 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 115 transitions. [2024-10-24 23:47:48,744 INFO L425 stractBuchiCegarLoop]: Abstraction has 93 states and 115 transitions. [2024-10-24 23:47:48,745 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-10-24 23:47:48,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 115 transitions. [2024-10-24 23:47:48,745 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-10-24 23:47:48,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-24 23:47:48,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-24 23:47:48,747 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 23:47:48,747 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-24 23:47:48,747 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#$Ultimate##0 [2024-10-24 23:47:48,747 INFO L747 eck$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 [2024-10-24 23:47:48,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1060897207, now seen corresponding path program 1 times [2024-10-24 23:47:48,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:48,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041767746] [2024-10-24 23:47:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:48,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:48,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:48,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash 245881341, now seen corresponding path program 1 times [2024-10-24 23:47:48,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:48,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561875286] [2024-10-24 23:47:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:48,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:48,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 23:47:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 23:47:48,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 23:47:48,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2071488077, now seen corresponding path program 2 times [2024-10-24 23:47:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 23:47:48,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745196001] [2024-10-24 23:47:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 23:47:48,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 23:47:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2024-10-24 23:47:48,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 23:47:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 23:47:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 23:47:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 23:47:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-24 23:47:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-24 23:47:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 23:47:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 23:47:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-10-24 23:47:48,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 23:47:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745196001] [2024-10-24 23:47:48,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745196001] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 23:47:48,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225834393] [2024-10-24 23:47:48,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 23:47:48,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 23:47:48,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:48,897 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 23:47:48,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-24 23:47:48,930 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 23:47:48,930 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 23:47:48,931 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 23:47:48,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 23:47:48,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 23:47:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-10-24 23:47:49,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225834393] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 23:47:49,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 23:47:49,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-10-24 23:47:49,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861360026] [2024-10-24 23:47:49,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 23:47:49,168 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:49,169 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:49,169 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:49,169 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:49,169 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-24 23:47:49,169 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,169 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:49,169 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:49,169 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration8_Loop [2024-10-24 23:47:49,169 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:49,169 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:49,169 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,171 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,173 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,175 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,177 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,199 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:49,200 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-24 23:47:49,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,201 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2024-10-24 23:47:49,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:49,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:49,218 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:49,218 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:49,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2024-10-24 23:47:49,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,233 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2024-10-24 23:47:49,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:49,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:49,246 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:49,246 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:49,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:49,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,258 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2024-10-24 23:47:49,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:49,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:49,274 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:49,274 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:49,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:49,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,286 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2024-10-24 23:47:49,287 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:49,287 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:49,298 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:49,298 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:49,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:49,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,310 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2024-10-24 23:47:49,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:49,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:49,323 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-24 23:47:49,323 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-24 23:47:49,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:49,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,335 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2024-10-24 23:47:49,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-24 23:47:49,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:49,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2024-10-24 23:47:49,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,359 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2024-10-24 23:47:49,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-24 23:47:49,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-24 23:47:49,372 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-24 23:47:49,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:49,382 INFO L204 LassoAnalysis]: Preferences: [2024-10-24 23:47:49,383 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-24 23:47:49,383 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-24 23:47:49,383 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-24 23:47:49,383 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-24 23:47:49,383 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,383 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-24 23:47:49,383 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-24 23:47:49,383 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration8_Loop [2024-10-24 23:47:49,383 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-24 23:47:49,383 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-24 23:47:49,383 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,385 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,387 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,388 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,389 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,391 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-24 23:47:49,416 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-24 23:47:49,416 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-24 23:47:49,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,420 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2024-10-24 23:47:49,422 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 [2024-10-24 23:47:49,432 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:49,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:49,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:49,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:49,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:49,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:49,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:49,434 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:49,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:49,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,445 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2024-10-24 23:47:49,447 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 [2024-10-24 23:47:49,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:49,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:49,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:49,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:49,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:49,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:49,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:49,458 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:49,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:49,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,470 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2024-10-24 23:47:49,472 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 [2024-10-24 23:47:49,482 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:49,482 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:49,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:49,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:49,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:49,483 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:49,483 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:49,484 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:49,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2024-10-24 23:47:49,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,496 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2024-10-24 23:47:49,498 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 [2024-10-24 23:47:49,507 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:49,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:49,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:49,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:49,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:49,508 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:49,508 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:49,512 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:49,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:49,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,524 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2024-10-24 23:47:49,525 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 [2024-10-24 23:47:49,535 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:49,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:49,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:49,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:49,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:49,536 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:49,536 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:49,537 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-24 23:47:49,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2024-10-24 23:47:49,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,549 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2024-10-24 23:47:49,550 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 [2024-10-24 23:47:49,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-24 23:47:49,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-24 23:47:49,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-24 23:47:49,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-24 23:47:49,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-24 23:47:49,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-24 23:47:49,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-24 23:47:49,562 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-24 23:47:49,564 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-24 23:47:49,564 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-24 23:47:49,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-24 23:47:49,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 23:47:49,566 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-24 23:47:49,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2024-10-24 23:47:49,568 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-24 23:47:49,568 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-24 23:47:49,568 INFO L474 LassoAnalysis]: Proved termination. [2024-10-24 23:47:49,568 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-10-24 23:47:49,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2024-10-24 23:47:49,579 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-24 23:47:49,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:49,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:47:49,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:49,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 23:47:49,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 23:47:49,892 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 [2024-10-24 23:47:49,893 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) [2024-10-24 23:47:49,936 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. [2024-10-24 23:47:49,936 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 [2024-10-24 23:47:49,937 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) [2024-10-24 23:47:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2024-10-24 23:47:49,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 30 letters. Loop has 24 letters. [2024-10-24 23:47:49,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:49,937 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:47:49,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:49,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:47:49,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:50,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:50,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 23:47:50,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 23:47:50,258 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 [2024-10-24 23:47:50,258 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) [2024-10-24 23:47:50,298 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. [2024-10-24 23:47:50,299 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 [2024-10-24 23:47:50,299 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) [2024-10-24 23:47:50,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2024-10-24 23:47:50,300 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 30 letters. Loop has 24 letters. [2024-10-24 23:47:50,300 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:50,300 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:47:50,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:50,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:47:50,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:50,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 23:47:50,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 23:47:50,593 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 [2024-10-24 23:47:50,593 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) [2024-10-24 23:47:50,774 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. [2024-10-24 23:47:50,774 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 [2024-10-24 23:47:50,775 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) [2024-10-24 23:47:50,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 40 transitions. [2024-10-24 23:47:50,775 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 40 transitions. Stem has 30 letters. Loop has 24 letters. [2024-10-24 23:47:50,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:50,775 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-24 23:47:50,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 23:47:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:50,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 23:47:50,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 23:47:51,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-24 23:47:51,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 23:47:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 23:47:51,145 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 [2024-10-24 23:47:51,145 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) [2024-10-24 23:47:51,503 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. [2024-10-24 23:47:51,503 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 [2024-10-24 23:47:51,504 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) [2024-10-24 23:47:51,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 51 transitions. [2024-10-24 23:47:51,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 51 transitions. Stem has 30 letters. Loop has 24 letters. [2024-10-24 23:47:51,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:51,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 51 transitions. Stem has 54 letters. Loop has 24 letters. [2024-10-24 23:47:51,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:51,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 51 transitions. Stem has 30 letters. Loop has 48 letters. [2024-10-24 23:47:51,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-24 23:47:51,505 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 410 states and 516 transitions. [2024-10-24 23:47:51,509 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 62 [2024-10-24 23:47:51,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 410 states to 254 states and 346 transitions. [2024-10-24 23:47:51,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2024-10-24 23:47:51,511 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 165 [2024-10-24 23:47:51,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 254 states and 346 transitions. [2024-10-24 23:47:51,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-24 23:47:51,511 INFO L218 hiAutomatonCegarLoop]: Abstraction has 254 states and 346 transitions. [2024-10-24 23:47:51,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states and 346 transitions. [2024-10-24 23:47:51,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 217. [2024-10-24 23:47:51,516 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) [2024-10-24 23:47:51,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 271 transitions. [2024-10-24 23:47:51,517 INFO L240 hiAutomatonCegarLoop]: Abstraction has 217 states and 271 transitions. [2024-10-24 23:47:51,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 23:47:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 23:47:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 23:47:51,517 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) [2024-10-24 23:47:51,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 23:47:51,546 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-10-24 23:47:51,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 38 transitions. [2024-10-24 23:47:51,546 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-24 23:47:51,546 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2024-10-24 23:47:51,546 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-24 23:47:51,546 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-24 23:47:51,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-24 23:47:51,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-24 23:47:51,547 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:47:51,547 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:47:51,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 23:47:51,547 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-24 23:47:51,547 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-10-24 23:47:51,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-24 23:47:51,548 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-24 23:47:51,548 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-24 23:47:51,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 24.10 11:47:51 BoogieIcfgContainer [2024-10-24 23:47:51,553 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-24 23:47:51,554 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 23:47:51,554 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 23:47:51,554 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 23:47:51,555 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:47:38" (3/4) ... [2024-10-24 23:47:51,556 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 23:47:51,557 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 23:47:51,557 INFO L158 Benchmark]: Toolchain (without parser) took 13257.66ms. Allocated memory was 163.6MB in the beginning and 245.4MB in the end (delta: 81.8MB). Free memory was 87.8MB in the beginning and 155.4MB in the end (delta: -67.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2024-10-24 23:47:51,557 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 163.6MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:47:51,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.90ms. Allocated memory is still 163.6MB. Free memory was 87.5MB in the beginning and 76.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-24 23:47:51,558 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.65ms. Allocated memory is still 163.6MB. Free memory was 76.4MB in the beginning and 75.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:47:51,558 INFO L158 Benchmark]: Boogie Preprocessor took 18.49ms. Allocated memory is still 163.6MB. Free memory was 75.2MB in the beginning and 73.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 23:47:51,558 INFO L158 Benchmark]: RCFGBuilder took 334.30ms. Allocated memory is still 163.6MB. Free memory was 73.7MB in the beginning and 131.0MB in the end (delta: -57.4MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-10-24 23:47:51,558 INFO L158 Benchmark]: BuchiAutomizer took 12704.08ms. Allocated memory was 163.6MB in the beginning and 245.4MB in the end (delta: 81.8MB). Free memory was 131.0MB in the beginning and 155.4MB in the end (delta: -24.4MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. [2024-10-24 23:47:51,558 INFO L158 Benchmark]: Witness Printer took 2.88ms. Allocated memory is still 245.4MB. Free memory is still 155.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 23:47:51,559 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 163.6MB. Free memory is still 132.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.90ms. Allocated memory is still 163.6MB. Free memory was 87.5MB in the beginning and 76.4MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.65ms. Allocated memory is still 163.6MB. Free memory was 76.4MB in the beginning and 75.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.49ms. Allocated memory is still 163.6MB. Free memory was 75.2MB in the beginning and 73.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.30ms. Allocated memory is still 163.6MB. Free memory was 73.7MB in the beginning and 131.0MB in the end (delta: -57.4MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 12704.08ms. Allocated memory was 163.6MB in the beginning and 245.4MB in the end (delta: 81.8MB). Free memory was 131.0MB in the beginning and 155.4MB in the end (delta: -24.4MB). Peak memory consumption was 58.3MB. Max. memory is 16.1GB. * Witness Printer took 2.88ms. Allocated memory is still 245.4MB. Free memory is still 155.4MB. 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 12.6s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 6.6s. Construction of modules took 0.9s. Büchi inclusion checks took 4.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 249 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.1s 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, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 911 SdHoareTripleChecker+Invalid, 0.9s 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: 22ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-24 23:47:51,578 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-10-24 23:47:51,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:51,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:52,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-24 23:47:52,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE