./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/NestedRecursion_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-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 08:01:15,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 08:01:15,313 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-17 08:01:15,317 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 08:01:15,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 08:01:15,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-17 08:01:15,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 08:01:15,335 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 08:01:15,335 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 08:01:15,336 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 08:01:15,336 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 08:01:15,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 08:01:15,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 08:01:15,337 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 08:01:15,337 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-17 08:01:15,337 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-17 08:01:15,337 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-17 08:01:15,337 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-17 08:01:15,338 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-17 08:01:15,338 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-17 08:01:15,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 08:01:15,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-17 08:01:15,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 08:01:15,342 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 08:01:15,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-17 08:01:15,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-17 08:01:15,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-17 08:01:15,345 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 08:01:15,345 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 08:01:15,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 08:01:15,345 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-17 08:01:15,345 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 08:01:15,345 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 08:01:15,345 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 08:01:15,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 08:01:15,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 08:01:15,346 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-17 08:01:15,346 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c [2024-11-17 08:01:15,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 08:01:15,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 08:01:15,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 08:01:15,562 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 08:01:15,562 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 08:01:15,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2024-11-17 08:01:16,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 08:01:16,903 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 08:01:16,904 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2024-11-17 08:01:16,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68fe16fd0/b5b41cdf728f4697a167f97b4061b32e/FLAGbf63792c9 [2024-11-17 08:01:16,928 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68fe16fd0/b5b41cdf728f4697a167f97b4061b32e [2024-11-17 08:01:16,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 08:01:16,932 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 08:01:16,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 08:01:16,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 08:01:16,939 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 08:01:16,940 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:01:16" (1/1) ... [2024-11-17 08:01:16,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee6b644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:16, skipping insertion in model container [2024-11-17 08:01:16,941 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:01:16" (1/1) ... [2024-11-17 08:01:16,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 08:01:17,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:01:17,084 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 08:01:17,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:01:17,105 INFO L204 MainTranslator]: Completed translation [2024-11-17 08:01:17,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17 WrapperNode [2024-11-17 08:01:17,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 08:01:17,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 08:01:17,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 08:01:17,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 08:01:17,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,123 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7 [2024-11-17 08:01:17,124 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 08:01:17,124 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 08:01:17,124 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 08:01:17,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 08:01:17,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,135 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-17 08:01:17,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,136 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,137 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,138 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 08:01:17,139 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 08:01:17,139 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 08:01:17,139 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 08:01:17,140 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (1/1) ... [2024-11-17 08:01:17,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:17,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:17,166 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:17,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-17 08:01:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2024-11-17 08:01:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2024-11-17 08:01:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2024-11-17 08:01:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2024-11-17 08:01:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 08:01:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 08:01:17,251 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 08:01:17,253 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 08:01:17,302 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L14: havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; [2024-11-17 08:01:17,314 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L20: havoc #t~ret3;havoc #t~ret4; [2024-11-17 08:01:17,351 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-17 08:01:17,351 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 08:01:17,363 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 08:01:17,367 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 08:01:17,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:01:17 BoogieIcfgContainer [2024-11-17 08:01:17,368 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 08:01:17,368 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-17 08:01:17,369 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-17 08:01:17,375 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-17 08:01:17,375 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:01:17,375 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.11 08:01:16" (1/3) ... [2024-11-17 08:01:17,376 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a3ea895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:01:17, skipping insertion in model container [2024-11-17 08:01:17,376 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:01:17,376 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:01:17" (2/3) ... [2024-11-17 08:01:17,377 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6a3ea895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:01:17, skipping insertion in model container [2024-11-17 08:01:17,377 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:01:17,377 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:01:17" (3/3) ... [2024-11-17 08:01:17,378 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1b.c [2024-11-17 08:01:17,425 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-17 08:01:17,426 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-17 08:01:17,426 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-17 08:01:17,426 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-17 08:01:17,427 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-17 08:01:17,427 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-17 08:01:17,427 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-17 08:01:17,427 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-17 08:01:17,431 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 08:01:17,445 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-11-17 08:01:17,445 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:01:17,445 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:01:17,450 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-17 08:01:17,450 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:17,450 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-17 08:01:17,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-17 08:01:17,454 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-11-17 08:01:17,455 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:01:17,455 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:01:17,455 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-17 08:01:17,455 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:17,459 INFO L745 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 18#ULTIMATE.init_returnLabel#1true assume true;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#L25-1true call main_#t~ret6#1 := rec2(main_~x~0#1);< 16#rec2ENTRYtrue [2024-11-17 08:01:17,459 INFO L747 eck$LassoCheckResult]: Loop: 16#rec2ENTRYtrue ~j := #in~j; 17#L18true assume !(~j <= 0); 13#L20-3true call #t~ret3 := rec1(~j - 1);< 22#rec1ENTRYtrue ~i := #in~i; 20#L12true assume ~i <= 0;#res := 0; 14#rec1FINALtrue assume true; 15#rec1EXITtrue >#32#return; 7#L20-2true call #t~ret4 := rec2(#t~ret3);< 16#rec2ENTRYtrue [2024-11-17 08:01:17,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:17,463 INFO L85 PathProgramCache]: Analyzing trace with hash 50625, now seen corresponding path program 1 times [2024-11-17 08:01:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:17,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851771995] [2024-11-17 08:01:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:17,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:17,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:17,597 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:17,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1000827576, now seen corresponding path program 1 times [2024-11-17 08:01:17,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:17,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025998891] [2024-11-17 08:01:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:17,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:17,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:17,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:17,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1592288504, now seen corresponding path program 1 times [2024-11-17 08:01:17,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:17,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443036704] [2024-11-17 08:01:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:17,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:17,635 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:17,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:17,766 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:17,767 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:17,767 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:17,767 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:17,767 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:01:17,767 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:17,767 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:17,768 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:17,768 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration1_Loop [2024-11-17 08:01:17,768 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:17,768 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:17,778 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:17,784 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:17,786 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:17,793 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:17,798 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:17,843 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:17,844 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:01:17,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:17,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:17,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:17,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-17 08:01:17,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:17,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:17,865 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:17,865 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret3=0} Honda state: {rec2_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:17,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:17,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:17,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:17,879 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:17,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-17 08:01:17,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:17,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:17,893 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:17,893 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_~j=0} Honda state: {rec2_~j=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:17,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-17 08:01:17,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:17,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:17,906 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:17,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-17 08:01:17,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:17,907 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:17,918 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:17,919 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:17,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:17,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:17,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:17,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:17,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-17 08:01:17,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:17,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:17,959 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 [2024-11-17 08:01:17,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:17,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:17,960 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:17,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-17 08:01:17,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:01:17,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:17,975 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:01:17,985 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 [2024-11-17 08:01:17,985 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:17,986 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:17,986 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:17,986 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:17,986 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:01:17,986 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:17,986 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:17,986 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:17,986 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration1_Loop [2024-11-17 08:01:17,986 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:17,987 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:17,987 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:17,992 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:17,997 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:17,999 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,005 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,037 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:18,040 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:01:18,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,042 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-17 08:01:18,044 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:18,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:18,054 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:18,055 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:18,055 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:18,055 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:18,056 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:18,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:18,058 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:18,068 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 [2024-11-17 08:01:18,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,069 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-17 08:01:18,071 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:18,080 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:18,081 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:18,081 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:18,081 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:18,081 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:18,081 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:18,082 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:18,083 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:18,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:18,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-17 08:01:18,095 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:18,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:18,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:18,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:18,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:18,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:18,106 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:18,106 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:18,110 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:18,120 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 [2024-11-17 08:01:18,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,121 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-17 08:01:18,123 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:18,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:18,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:18,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:18,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:18,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:18,135 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:18,135 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:18,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:01:18,141 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:01:18,141 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:01:18,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,144 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-17 08:01:18,148 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:01:18,148 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:01:18,148 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:01:18,148 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2024-11-17 08:01:18,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-17 08:01:18,161 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:01:18,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:18,195 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 08:01:18,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:18,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 08:01:18,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:18,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:01:18,313 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 [2024-11-17 08:01:18,315 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) [2024-11-17 08:01:18,605 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. [2024-11-17 08:01:18,608 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 [2024-11-17 08:01:18,611 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) [2024-11-17 08:01:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 55 transitions. [2024-11-17 08:01:18,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 55 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-17 08:01:18,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:18,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 55 transitions. Stem has 11 letters. Loop has 8 letters. [2024-11-17 08:01:18,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:18,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 55 transitions. Stem has 3 letters. Loop has 16 letters. [2024-11-17 08:01:18,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:18,616 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 187 states and 266 transitions. [2024-11-17 08:01:18,625 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-11-17 08:01:18,630 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 187 states to 83 states and 121 transitions. [2024-11-17 08:01:18,631 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2024-11-17 08:01:18,631 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2024-11-17 08:01:18,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 121 transitions. [2024-11-17 08:01:18,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:18,632 INFO L218 hiAutomatonCegarLoop]: Abstraction has 83 states and 121 transitions. [2024-11-17 08:01:18,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 121 transitions. [2024-11-17 08:01:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 56. [2024-11-17 08:01:18,654 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) [2024-11-17 08:01:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 84 transitions. [2024-11-17 08:01:18,655 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 84 transitions. [2024-11-17 08:01:18,655 INFO L425 stractBuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2024-11-17 08:01:18,655 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-17 08:01:18,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 84 transitions. [2024-11-17 08:01:18,656 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-11-17 08:01:18,657 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:01:18,657 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:01:18,657 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:18,657 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-17 08:01:18,657 INFO L745 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 342#ULTIMATE.init_returnLabel#1 assume true;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; 346#L25-1 call main_#t~ret6#1 := rec2(main_~x~0#1);< 367#rec2ENTRY ~j := #in~j; 378#L18 assume !(~j <= 0); 350#L20-3 call #t~ret3 := rec1(~j - 1);< 372#rec1ENTRY ~i := #in~i; 379#L12 assume !(~i <= 0); 356#L14-4 call #t~ret0 := rec1(~i - 2);< 351#rec1ENTRY [2024-11-17 08:01:18,657 INFO L747 eck$LassoCheckResult]: Loop: 351#rec1ENTRY ~i := #in~i; 387#L12 assume !(~i <= 0); 360#L14-4 call #t~ret0 := rec1(~i - 2);< 351#rec1ENTRY [2024-11-17 08:01:18,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:18,658 INFO L85 PathProgramCache]: Analyzing trace with hash 664264189, now seen corresponding path program 1 times [2024-11-17 08:01:18,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:18,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547619323] [2024-11-17 08:01:18,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:18,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:18,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:18,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:18,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash 36731, now seen corresponding path program 1 times [2024-11-17 08:01:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:18,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086969558] [2024-11-17 08:01:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:18,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:18,681 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:18,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:18,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2114838529, now seen corresponding path program 2 times [2024-11-17 08:01:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:18,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171106227] [2024-11-17 08:01:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:18,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:18,705 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:18,748 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:18,748 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:18,748 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:18,749 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:18,749 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:01:18,749 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,749 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:18,749 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:18,749 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration2_Loop [2024-11-17 08:01:18,749 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:18,749 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:18,750 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,753 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,756 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,761 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,763 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,786 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:18,786 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:01:18,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,789 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-17 08:01:18,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:18,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:18,803 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:18,804 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:18,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:18,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,815 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-17 08:01:18,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:18,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:18,827 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:18,828 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:18,837 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 [2024-11-17 08:01:18,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,839 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-17 08:01:18,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:18,840 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:18,851 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:18,851 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:18,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:18,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,862 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-17 08:01:18,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:18,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:18,884 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 [2024-11-17 08:01:18,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:18,886 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:18,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-17 08:01:18,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:01:18,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:18,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-17 08:01:18,953 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:01:18,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:18,957 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:18,957 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:18,957 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:18,957 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:18,957 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:01:18,957 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:18,957 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:18,957 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:18,957 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration2_Loop [2024-11-17 08:01:18,957 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:18,957 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:18,958 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,962 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,964 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,965 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:18,975 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,002 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:19,002 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:01:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,004 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-17 08:01:19,007 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:19,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:19,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:19,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:19,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:19,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:19,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:19,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:19,019 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:19,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:19,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,030 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-17 08:01:19,032 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:19,041 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:19,042 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:19,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:19,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:19,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:19,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:19,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:19,044 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:19,054 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 [2024-11-17 08:01:19,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,055 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-17 08:01:19,057 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:19,066 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:19,066 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:19,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:19,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:19,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:19,067 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:19,067 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:19,068 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:19,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:19,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,079 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-17 08:01:19,081 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:19,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:19,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:19,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:19,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:19,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:19,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:19,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:19,092 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:19,102 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 [2024-11-17 08:01:19,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,103 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-17 08:01:19,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:19,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:19,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:19,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:19,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:19,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:19,115 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:19,116 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:19,117 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:01:19,118 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-17 08:01:19,118 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-17 08:01:19,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,120 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-17 08:01:19,121 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:01:19,121 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:01:19,121 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:01:19,121 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-11-17 08:01:19,131 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 [2024-11-17 08:01:19,132 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:01:19,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 08:01:19,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 08:01:19,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:19,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:01:19,196 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-17 08:01:19,196 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) [2024-11-17 08:01:19,241 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. [2024-11-17 08:01:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-17 08:01:19,243 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) [2024-11-17 08:01:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2024-11-17 08:01:19,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 9 letters. Loop has 3 letters. [2024-11-17 08:01:19,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:19,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2024-11-17 08:01:19,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:19,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 9 letters. Loop has 6 letters. [2024-11-17 08:01:19,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:19,244 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 106 states and 150 transitions. [2024-11-17 08:01:19,246 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-11-17 08:01:19,248 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 106 states to 94 states and 138 transitions. [2024-11-17 08:01:19,248 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2024-11-17 08:01:19,248 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2024-11-17 08:01:19,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 138 transitions. [2024-11-17 08:01:19,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:19,249 INFO L218 hiAutomatonCegarLoop]: Abstraction has 94 states and 138 transitions. [2024-11-17 08:01:19,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 138 transitions. [2024-11-17 08:01:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2024-11-17 08:01:19,258 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) [2024-11-17 08:01:19,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 130 transitions. [2024-11-17 08:01:19,259 INFO L240 hiAutomatonCegarLoop]: Abstraction has 90 states and 130 transitions. [2024-11-17 08:01:19,259 INFO L425 stractBuchiCegarLoop]: Abstraction has 90 states and 130 transitions. [2024-11-17 08:01:19,259 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-17 08:01:19,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 130 transitions. [2024-11-17 08:01:19,261 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-11-17 08:01:19,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:01:19,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:01:19,263 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:19,263 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-17 08:01:19,264 INFO L745 eck$LassoCheckResult]: Stem: 576#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 577#ULTIMATE.init_returnLabel#1 assume true;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; 579#L25-1 call main_#t~ret6#1 := rec2(main_~x~0#1);< 602#rec2ENTRY ~j := #in~j; 613#L18 assume !(~j <= 0); 600#L20-3 call #t~ret3 := rec1(~j - 1);< 621#rec1ENTRY ~i := #in~i; 616#L12 assume !(~i <= 0); 593#L14-4 call #t~ret0 := rec1(~i - 2);< 632#rec1ENTRY ~i := #in~i; 633#L12 assume ~i <= 0;#res := 0; 634#rec1FINAL assume true; 624#rec1EXIT >#28#return; 592#L14-3 call #t~ret1 := rec1(#t~ret0 - 1);< 594#rec1ENTRY [2024-11-17 08:01:19,264 INFO L747 eck$LassoCheckResult]: Loop: 594#rec1ENTRY ~i := #in~i; 637#L12 assume !(~i <= 0); 587#L14-4 call #t~ret0 := rec1(~i - 2);< 594#rec1ENTRY [2024-11-17 08:01:19,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash -840342518, now seen corresponding path program 1 times [2024-11-17 08:01:19,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:19,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117887665] [2024-11-17 08:01:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:19,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:19,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:19,279 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:19,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash 36731, now seen corresponding path program 2 times [2024-11-17 08:01:19,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:19,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910816073] [2024-11-17 08:01:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:19,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:19,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:19,284 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:19,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:19,284 INFO L85 PathProgramCache]: Analyzing trace with hash 720421586, now seen corresponding path program 2 times [2024-11-17 08:01:19,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:19,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81604108] [2024-11-17 08:01:19,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:19,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-17 08:01:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 08:01:19,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:01:19,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81604108] [2024-11-17 08:01:19,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81604108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:01:19,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 08:01:19,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-17 08:01:19,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909623383] [2024-11-17 08:01:19,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:01:19,407 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:19,407 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:19,407 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:19,407 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:19,407 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:01:19,408 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,408 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:19,408 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:19,408 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration3_Loop [2024-11-17 08:01:19,408 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:19,408 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:19,408 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,417 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,419 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,420 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,422 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,441 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:19,441 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:01:19,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,443 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-17 08:01:19,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:19,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:19,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:19,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,466 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-17 08:01:19,467 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:01:19,467 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:19,508 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:01:19,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:19,512 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:19,512 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:19,512 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:19,512 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:19,512 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:01:19,512 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,512 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:19,512 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:19,512 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration3_Loop [2024-11-17 08:01:19,512 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:19,512 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:19,513 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,519 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,520 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,521 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,525 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,527 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:19,547 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:19,547 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:01:19,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,548 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-17 08:01:19,550 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 [2024-11-17 08:01:19,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:19,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:19,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:19,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:19,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:19,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:19,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:19,562 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:01:19,564 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-17 08:01:19,564 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-17 08:01:19,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:19,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,565 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-17 08:01:19,567 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:01:19,567 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:01:19,567 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:01:19,567 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-11-17 08:01:19,577 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 [2024-11-17 08:01:19,578 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:01:19,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 08:01:19,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 08:01:19,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:01:19,685 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-17 08:01:19,685 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) [2024-11-17 08:01:19,753 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. [2024-11-17 08:01:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-17 08:01:19,757 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) [2024-11-17 08:01:19,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 20 transitions. [2024-11-17 08:01:19,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 14 letters. Loop has 3 letters. [2024-11-17 08:01:19,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:19,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 17 letters. Loop has 3 letters. [2024-11-17 08:01:19,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:19,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 20 transitions. Stem has 14 letters. Loop has 6 letters. [2024-11-17 08:01:19,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:19,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 194 transitions. [2024-11-17 08:01:19,761 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-11-17 08:01:19,763 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 123 states and 182 transitions. [2024-11-17 08:01:19,765 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2024-11-17 08:01:19,765 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2024-11-17 08:01:19,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 182 transitions. [2024-11-17 08:01:19,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:19,766 INFO L218 hiAutomatonCegarLoop]: Abstraction has 123 states and 182 transitions. [2024-11-17 08:01:19,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 182 transitions. [2024-11-17 08:01:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2024-11-17 08:01:19,773 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) [2024-11-17 08:01:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 166 transitions. [2024-11-17 08:01:19,775 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 166 transitions. [2024-11-17 08:01:19,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:01:19,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 08:01:19,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 08:01:19,779 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) [2024-11-17 08:01:19,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:01:19,816 INFO L93 Difference]: Finished difference Result 124 states and 176 transitions. [2024-11-17 08:01:19,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 176 transitions. [2024-11-17 08:01:19,818 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2024-11-17 08:01:19,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 122 states and 174 transitions. [2024-11-17 08:01:19,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2024-11-17 08:01:19,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2024-11-17 08:01:19,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 174 transitions. [2024-11-17 08:01:19,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:19,821 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 174 transitions. [2024-11-17 08:01:19,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 174 transitions. [2024-11-17 08:01:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2024-11-17 08:01:19,826 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) [2024-11-17 08:01:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 144 transitions. [2024-11-17 08:01:19,828 INFO L240 hiAutomatonCegarLoop]: Abstraction has 102 states and 144 transitions. [2024-11-17 08:01:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 08:01:19,829 INFO L425 stractBuchiCegarLoop]: Abstraction has 102 states and 144 transitions. [2024-11-17 08:01:19,829 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-17 08:01:19,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 144 transitions. [2024-11-17 08:01:19,831 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-17 08:01:19,831 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:01:19,833 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:01:19,834 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:19,834 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:19,834 INFO L745 eck$LassoCheckResult]: Stem: 1143#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1144#ULTIMATE.init_returnLabel#1 assume true;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; 1146#L25-1 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1170#rec2ENTRY ~j := #in~j; 1210#L18 assume !(~j <= 0); 1173#L20-3 call #t~ret3 := rec1(~j - 1);< 1209#rec1ENTRY ~i := #in~i; 1208#L12 assume !(~i <= 0); 1153#L14-4 call #t~ret0 := rec1(~i - 2);< 1206#rec1ENTRY ~i := #in~i; 1204#L12 assume !(~i <= 0); 1154#L14-4 call #t~ret0 := rec1(~i - 2);< 1203#rec1ENTRY ~i := #in~i; 1205#L12 assume ~i <= 0;#res := 0; 1185#rec1FINAL assume true; 1186#rec1EXIT >#28#return; 1152#L14-3 [2024-11-17 08:01:19,834 INFO L747 eck$LassoCheckResult]: Loop: 1152#L14-3 call #t~ret1 := rec1(#t~ret0 - 1);< 1155#rec1ENTRY ~i := #in~i; 1195#L12 assume ~i <= 0;#res := 0; 1196#rec1FINAL assume true; 1242#rec1EXIT >#26#return; 1156#L14-2 call #t~ret2 := rec1(#t~ret1);< 1167#rec1ENTRY ~i := #in~i; 1234#L12 assume !(~i <= 0); 1157#L14-4 call #t~ret0 := rec1(~i - 2);< 1167#rec1ENTRY ~i := #in~i; 1234#L12 assume ~i <= 0;#res := 0; 1233#rec1FINAL assume true; 1232#rec1EXIT >#28#return; 1152#L14-3 [2024-11-17 08:01:19,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash -69776655, now seen corresponding path program 1 times [2024-11-17 08:01:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:19,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684953241] [2024-11-17 08:01:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:19,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:19,842 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:19,845 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:19,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash -813779393, now seen corresponding path program 1 times [2024-11-17 08:01:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:19,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124724491] [2024-11-17 08:01:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:19,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-11-17 08:01:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-17 08:01:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 08:01:19,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:01:19,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124724491] [2024-11-17 08:01:19,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124724491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:01:19,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198803706] [2024-11-17 08:01:19,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:19,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:01:19,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:19,907 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:01:19,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-17 08:01:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:19,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 08:01:19,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:01:19,942 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 08:01:19,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198803706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:01:19,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 08:01:19,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2024-11-17 08:01:19,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984256254] [2024-11-17 08:01:19,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:01:19,943 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:01:19,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:01:19,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 08:01:19,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-17 08:01:19,943 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) [2024-11-17 08:01:19,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-17 08:01:19,985 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 [2024-11-17 08:01:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:01:19,991 INFO L93 Difference]: Finished difference Result 118 states and 162 transitions. [2024-11-17 08:01:19,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 162 transitions. [2024-11-17 08:01:19,993 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-11-17 08:01:19,998 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 118 states and 162 transitions. [2024-11-17 08:01:19,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 54 [2024-11-17 08:01:19,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2024-11-17 08:01:19,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 162 transitions. [2024-11-17 08:01:19,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:19,998 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 162 transitions. [2024-11-17 08:01:19,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 162 transitions. [2024-11-17 08:01:20,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2024-11-17 08:01:20,006 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) [2024-11-17 08:01:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 158 transitions. [2024-11-17 08:01:20,010 INFO L240 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-11-17 08:01:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 08:01:20,011 INFO L425 stractBuchiCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-11-17 08:01:20,011 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-17 08:01:20,011 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 158 transitions. [2024-11-17 08:01:20,012 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2024-11-17 08:01:20,012 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:01:20,012 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:01:20,013 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:20,013 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:20,013 INFO L745 eck$LassoCheckResult]: Stem: 1420#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1421#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1424#L25-1 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1444#rec2ENTRY ~j := #in~j; 1490#L18 assume !(~j <= 0); 1450#L20-3 call #t~ret3 := rec1(~j - 1);< 1489#rec1ENTRY ~i := #in~i; 1488#L12 assume !(~i <= 0); 1436#L14-4 call #t~ret0 := rec1(~i - 2);< 1485#rec1ENTRY ~i := #in~i; 1486#L12 assume ~i <= 0;#res := 0; 1512#rec1FINAL assume true; 1502#rec1EXIT >#28#return; 1503#L14-3 call #t~ret1 := rec1(#t~ret0 - 1);< 1439#rec1ENTRY ~i := #in~i; 1524#L12 assume ~i <= 0;#res := 0; 1523#rec1FINAL assume true; 1522#rec1EXIT >#26#return; 1467#L14-2 call #t~ret2 := rec1(#t~ret1);< 1446#rec1ENTRY ~i := #in~i; 1477#L12 assume ~i <= 0;#res := 0; 1466#rec1FINAL assume true; 1468#rec1EXIT >#24#return; 1449#L14-1 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1452#rec1FINAL assume true; 1482#rec1EXIT >#32#return; 1422#L20-2 [2024-11-17 08:01:20,013 INFO L747 eck$LassoCheckResult]: Loop: 1422#L20-2 call #t~ret4 := rec2(#t~ret3);< 1426#rec2ENTRY ~j := #in~j; 1475#L18 assume !(~j <= 0); 1437#L20-3 call #t~ret3 := rec1(~j - 1);< 1464#rec1ENTRY ~i := #in~i; 1515#L12 assume !(~i <= 0); 1432#L14-4 call #t~ret0 := rec1(~i - 2);< 1464#rec1ENTRY ~i := #in~i; 1515#L12 assume ~i <= 0;#res := 0; 1514#rec1FINAL assume true; 1504#rec1EXIT >#28#return; 1429#L14-3 call #t~ret1 := rec1(#t~ret0 - 1);< 1439#rec1ENTRY ~i := #in~i; 1524#L12 assume ~i <= 0;#res := 0; 1523#rec1FINAL assume true; 1522#rec1EXIT >#26#return; 1445#L14-2 call #t~ret2 := rec1(#t~ret1);< 1446#rec1ENTRY ~i := #in~i; 1477#L12 assume ~i <= 0;#res := 0; 1466#rec1FINAL assume true; 1468#rec1EXIT >#24#return; 1471#L14-1 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1494#rec1FINAL assume true; 1481#rec1EXIT >#32#return; 1422#L20-2 [2024-11-17 08:01:20,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1479410478, now seen corresponding path program 1 times [2024-11-17 08:01:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:20,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289524495] [2024-11-17 08:01:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:20,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:20,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:20,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:20,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:20,032 INFO L85 PathProgramCache]: Analyzing trace with hash 946679379, now seen corresponding path program 1 times [2024-11-17 08:01:20,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:20,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138397865] [2024-11-17 08:01:20,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:20,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:20,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:20,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:20,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:20,042 INFO L85 PathProgramCache]: Analyzing trace with hash 872397440, now seen corresponding path program 1 times [2024-11-17 08:01:20,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:20,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776294468] [2024-11-17 08:01:20,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:20,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,121 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-17 08:01:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 08:01:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-17 08:01:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 08:01:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-17 08:01:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 08:01:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-17 08:01:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 08:01:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-17 08:01:20,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:01:20,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776294468] [2024-11-17 08:01:20,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776294468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:01:20,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038871118] [2024-11-17 08:01:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:20,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:01:20,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:20,220 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:01:20,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-17 08:01:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:20,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 08:01:20,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-17 08:01:20,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:01:20,424 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 28 proven. 22 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-17 08:01:20,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038871118] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:01:20,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:01:20,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 12 [2024-11-17 08:01:20,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730292592] [2024-11-17 08:01:20,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:01:20,613 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:20,613 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:20,613 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:20,613 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:20,613 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:01:20,613 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:20,613 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:20,613 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:20,613 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration5_Loop [2024-11-17 08:01:20,613 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:20,613 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:20,614 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:20,620 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:20,622 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:20,649 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:20,649 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:01:20,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:20,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:20,650 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) [2024-11-17 08:01:20,651 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 [2024-11-17 08:01:20,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:20,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:20,673 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 [2024-11-17 08:01:20,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:20,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:20,675 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:20,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-17 08:01:20,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:01:20,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:21,689 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:01:21,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:21,694 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:21,694 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:21,694 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:21,694 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:21,695 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:01:21,695 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:21,695 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:21,695 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:21,695 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration5_Loop [2024-11-17 08:01:21,695 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:21,695 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:21,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:21,700 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:21,706 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:21,733 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:21,733 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:01:21,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:21,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:21,734 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:21,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-17 08:01:21,737 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:21,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:21,747 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:21,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:21,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:21,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:21,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:21,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:21,752 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:21,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:21,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:21,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:21,765 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) [2024-11-17 08:01:21,766 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 [2024-11-17 08:01:21,767 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:21,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:21,777 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:21,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:21,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:21,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:21,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:21,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:21,782 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:01:21,784 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:01:21,784 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:01:21,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:21,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:21,786 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) [2024-11-17 08:01:21,787 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 [2024-11-17 08:01:21,787 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:01:21,788 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:01:21,788 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:01:21,788 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#t~ret3) = 1*rec2_#t~ret3 Supporting invariants [] [2024-11-17 08:01:21,798 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 [2024-11-17 08:01:21,798 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:01:21,799 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret3 [2024-11-17 08:01:21,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:21,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2024-11-17 08:01:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:21,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 08:01:21,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:22,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 08:01:22,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:22,203 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 08:01:22,204 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 [2024-11-17 08:01:22,204 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) [2024-11-17 08:01:22,517 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. [2024-11-17 08:01:22,518 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 [2024-11-17 08:01:22,519 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) [2024-11-17 08:01:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 53 transitions. [2024-11-17 08:01:22,520 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 26 letters. Loop has 24 letters. [2024-11-17 08:01:22,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:22,521 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 50 letters. Loop has 24 letters. [2024-11-17 08:01:22,521 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:22,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 53 transitions. Stem has 26 letters. Loop has 48 letters. [2024-11-17 08:01:22,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:22,523 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 585 states and 904 transitions. [2024-11-17 08:01:22,533 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2024-11-17 08:01:22,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 585 states to 433 states and 650 transitions. [2024-11-17 08:01:22,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2024-11-17 08:01:22,542 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 142 [2024-11-17 08:01:22,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 433 states and 650 transitions. [2024-11-17 08:01:22,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:22,542 INFO L218 hiAutomatonCegarLoop]: Abstraction has 433 states and 650 transitions. [2024-11-17 08:01:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states and 650 transitions. [2024-11-17 08:01:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 384. [2024-11-17 08:01:22,567 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) [2024-11-17 08:01:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 535 transitions. [2024-11-17 08:01:22,572 INFO L240 hiAutomatonCegarLoop]: Abstraction has 384 states and 535 transitions. [2024-11-17 08:01:22,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:01:22,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 08:01:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-17 08:01:22,573 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) [2024-11-17 08:01:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:01:22,685 INFO L93 Difference]: Finished difference Result 443 states and 646 transitions. [2024-11-17 08:01:22,685 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 443 states and 646 transitions. [2024-11-17 08:01:22,689 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2024-11-17 08:01:22,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 443 states to 350 states and 496 transitions. [2024-11-17 08:01:22,692 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 132 [2024-11-17 08:01:22,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 136 [2024-11-17 08:01:22,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 350 states and 496 transitions. [2024-11-17 08:01:22,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:22,694 INFO L218 hiAutomatonCegarLoop]: Abstraction has 350 states and 496 transitions. [2024-11-17 08:01:22,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states and 496 transitions. [2024-11-17 08:01:22,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 315. [2024-11-17 08:01:22,703 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) [2024-11-17 08:01:22,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 416 transitions. [2024-11-17 08:01:22,704 INFO L240 hiAutomatonCegarLoop]: Abstraction has 315 states and 416 transitions. [2024-11-17 08:01:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 08:01:22,706 INFO L425 stractBuchiCegarLoop]: Abstraction has 315 states and 416 transitions. [2024-11-17 08:01:22,706 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-17 08:01:22,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 315 states and 416 transitions. [2024-11-17 08:01:22,708 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 14 [2024-11-17 08:01:22,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:01:22,708 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:01:22,709 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] [2024-11-17 08:01:22,709 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-17 08:01:22,709 INFO L745 eck$LassoCheckResult]: Stem: 3556#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3557#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;havoc main_#t~nondet5#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 3572#L25-1 call main_#t~ret6#1 := rec2(main_~x~0#1);< 3573#rec2ENTRY ~j := #in~j; 3646#L18 assume !(~j <= 0); 3643#L20-3 call #t~ret3 := rec1(~j - 1);< 3644#rec1ENTRY ~i := #in~i; 3660#L12 assume !(~i <= 0); 3656#L14-4 call #t~ret0 := rec1(~i - 2);< 3659#rec1ENTRY ~i := #in~i; 3666#L12 assume ~i <= 0;#res := 0; 3703#rec1FINAL assume true; 3701#rec1EXIT >#28#return; 3696#L14-3 call #t~ret1 := rec1(#t~ret0 - 1);< 3697#rec1ENTRY ~i := #in~i; 3700#L12 assume ~i <= 0;#res := 0; 3698#rec1FINAL assume true; 3695#rec1EXIT >#26#return; 3690#L14-2 call #t~ret2 := rec1(#t~ret1);< 3694#rec1ENTRY ~i := #in~i; 3705#L12 assume ~i <= 0;#res := 0; 3704#rec1FINAL assume true; 3693#rec1EXIT >#24#return; 3691#L14-1 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 3715#rec1FINAL assume true; 3712#rec1EXIT >#32#return; 3626#L20-2 call #t~ret4 := rec2(#t~ret3);< 3739#rec2ENTRY ~j := #in~j; 3738#L18 assume !(~j <= 0); 3709#L20-3 call #t~ret3 := rec1(~j - 1);< 3629#rec1ENTRY ~i := #in~i; 3728#L12 assume !(~i <= 0); 3588#L14-4 call #t~ret0 := rec1(~i - 2);< 3567#rec1ENTRY [2024-11-17 08:01:22,709 INFO L747 eck$LassoCheckResult]: Loop: 3567#rec1ENTRY ~i := #in~i; 3743#L12 assume !(~i <= 0); 3586#L14-4 call #t~ret0 := rec1(~i - 2);< 3567#rec1ENTRY [2024-11-17 08:01:22,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:22,711 INFO L85 PathProgramCache]: Analyzing trace with hash 512725099, now seen corresponding path program 2 times [2024-11-17 08:01:22,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:22,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201432123] [2024-11-17 08:01:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:22,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:22,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-17 08:01:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:22,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 08:01:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:22,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-17 08:01:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:22,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 08:01:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-17 08:01:22,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:01:22,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201432123] [2024-11-17 08:01:22,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201432123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:01:22,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911093272] [2024-11-17 08:01:22,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 08:01:22,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:01:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:22,820 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:01:22,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-17 08:01:22,857 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 08:01:22,858 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 08:01:22,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-17 08:01:22,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-17 08:01:22,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:01:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-17 08:01:22,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911093272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:01:22,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:01:22,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-17 08:01:22,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265653856] [2024-11-17 08:01:22,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:01:22,961 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-17 08:01:22,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash 36731, now seen corresponding path program 3 times [2024-11-17 08:01:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:22,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274114517] [2024-11-17 08:01:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:22,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:22,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:22,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:22,989 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:22,990 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:22,990 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:22,990 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:22,990 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:01:22,990 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:22,990 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:22,990 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:22,990 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration6_Loop [2024-11-17 08:01:22,990 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:22,990 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:22,991 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:22,993 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:22,994 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:22,996 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:23,000 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:23,001 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:23,020 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:23,021 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:01:23,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,023 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) [2024-11-17 08:01:23,024 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 [2024-11-17 08:01:23,025 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:23,025 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:23,037 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:23,037 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:23,047 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 [2024-11-17 08:01:23,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,049 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:23,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-11-17 08:01:23,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:23,052 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:23,062 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:23,062 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:23,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:23,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,074 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) [2024-11-17 08:01:23,074 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 [2024-11-17 08:01:23,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:23,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:23,085 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:23,086 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:23,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:23,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,096 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) [2024-11-17 08:01:23,097 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 [2024-11-17 08:01:23,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:23,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:23,119 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 [2024-11-17 08:01:23,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,120 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) [2024-11-17 08:01:23,120 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 [2024-11-17 08:01:23,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:01:23,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:23,147 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:01:23,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2024-11-17 08:01:23,151 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:23,151 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:23,151 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:23,151 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:23,151 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:01:23,151 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,151 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:23,151 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:23,151 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration6_Loop [2024-11-17 08:01:23,151 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:23,151 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:23,152 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:23,153 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:23,158 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:23,159 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:23,162 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:23,166 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:23,191 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:23,192 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:01:23,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,194 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) [2024-11-17 08:01:23,196 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 [2024-11-17 08:01:23,196 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:23,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:23,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:23,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:23,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:23,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:23,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:23,207 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:23,211 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:23,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:23,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,223 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) [2024-11-17 08:01:23,224 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 [2024-11-17 08:01:23,225 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:23,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:23,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:23,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:23,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:23,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:23,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:23,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:23,237 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:23,248 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 [2024-11-17 08:01:23,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,249 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) [2024-11-17 08:01:23,252 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 [2024-11-17 08:01:23,253 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:23,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:23,264 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:23,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:23,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:23,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:23,264 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:23,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:23,265 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:23,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:23,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,279 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) [2024-11-17 08:01:23,280 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 [2024-11-17 08:01:23,281 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:23,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:23,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:23,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:23,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:23,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:23,293 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:23,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:23,294 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:23,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:23,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,305 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) [2024-11-17 08:01:23,305 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 [2024-11-17 08:01:23,306 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:23,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:23,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:23,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:23,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:23,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:23,317 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:23,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:23,318 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:01:23,320 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-17 08:01:23,320 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-17 08:01:23,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:23,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:23,321 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) [2024-11-17 08:01:23,322 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 [2024-11-17 08:01:23,323 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:01:23,323 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:01:23,323 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:01:23,323 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-11-17 08:01:23,333 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 [2024-11-17 08:01:23,335 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:01:23,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:23,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 08:01:23,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:23,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 08:01:23,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:01:23,538 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-17 08:01:23,538 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) [2024-11-17 08:01:23,590 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. [2024-11-17 08:01:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-17 08:01:23,591 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) [2024-11-17 08:01:23,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2024-11-17 08:01:23,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 33 letters. Loop has 3 letters. [2024-11-17 08:01:23,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:23,593 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:01:23,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:23,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 08:01:23,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:23,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 08:01:23,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:01:23,792 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-17 08:01:23,793 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) [2024-11-17 08:01:23,850 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 [2024-11-17 08:01:23,865 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. [2024-11-17 08:01:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-17 08:01:23,866 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) [2024-11-17 08:01:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2024-11-17 08:01:23,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 33 letters. Loop has 3 letters. [2024-11-17 08:01:23,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:23,867 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:01:23,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:23,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-17 08:01:23,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:24,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 08:01:24,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:01:24,065 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-17 08:01:24,065 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) [2024-11-17 08:01:24,134 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. [2024-11-17 08:01:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-17 08:01:24,135 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) [2024-11-17 08:01:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2024-11-17 08:01:24,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 33 letters. Loop has 3 letters. [2024-11-17 08:01:24,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:24,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 36 letters. Loop has 3 letters. [2024-11-17 08:01:24,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:24,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 33 letters. Loop has 6 letters. [2024-11-17 08:01:24,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:24,136 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 486 states and 617 transitions. [2024-11-17 08:01:24,140 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 26 [2024-11-17 08:01:24,143 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 486 states to 396 states and 527 transitions. [2024-11-17 08:01:24,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 130 [2024-11-17 08:01:24,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 137 [2024-11-17 08:01:24,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 396 states and 527 transitions. [2024-11-17 08:01:24,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:24,143 INFO L218 hiAutomatonCegarLoop]: Abstraction has 396 states and 527 transitions. [2024-11-17 08:01:24,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states and 527 transitions. [2024-11-17 08:01:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 352. [2024-11-17 08:01:24,150 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) [2024-11-17 08:01:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 457 transitions. [2024-11-17 08:01:24,151 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 457 transitions. [2024-11-17 08:01:24,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:01:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 08:01:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-17 08:01:24,152 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) [2024-11-17 08:01:24,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:01:24,216 INFO L93 Difference]: Finished difference Result 379 states and 514 transitions. [2024-11-17 08:01:24,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 379 states and 514 transitions. [2024-11-17 08:01:24,218 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-11-17 08:01:24,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 379 states to 105 states and 143 transitions. [2024-11-17 08:01:24,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2024-11-17 08:01:24,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 99 [2024-11-17 08:01:24,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 143 transitions. [2024-11-17 08:01:24,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:24,220 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 143 transitions. [2024-11-17 08:01:24,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 143 transitions. [2024-11-17 08:01:24,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2024-11-17 08:01:24,222 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) [2024-11-17 08:01:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2024-11-17 08:01:24,222 INFO L240 hiAutomatonCegarLoop]: Abstraction has 87 states and 107 transitions. [2024-11-17 08:01:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-17 08:01:24,223 INFO L425 stractBuchiCegarLoop]: Abstraction has 87 states and 107 transitions. [2024-11-17 08:01:24,223 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-17 08:01:24,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 107 transitions. [2024-11-17 08:01:24,224 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-11-17 08:01:24,224 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:01:24,224 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:01:24,224 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:24,224 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-11-17 08:01:24,224 INFO L745 eck$LassoCheckResult]: Stem: 6442#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 6443#ULTIMATE.init_returnLabel#1 assume true;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; 6446#L25-1 call main_#t~ret6#1 := rec2(main_~x~0#1);< 6458#rec2ENTRY ~j := #in~j; 6510#L18 assume !(~j <= 0); 6507#L20-3 call #t~ret3 := rec1(~j - 1);< 6509#rec1ENTRY ~i := #in~i; 6508#L12 assume !(~i <= 0); 6450#L14-4 call #t~ret0 := rec1(~i - 2);< 6481#rec1ENTRY ~i := #in~i; 6478#L12 assume !(~i <= 0); 6453#L14-4 [2024-11-17 08:01:24,224 INFO L747 eck$LassoCheckResult]: Loop: 6453#L14-4 call #t~ret0 := rec1(~i - 2);< 6475#rec1ENTRY ~i := #in~i; 6478#L12 assume !(~i <= 0); 6453#L14-4 [2024-11-17 08:01:24,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1592241252, now seen corresponding path program 3 times [2024-11-17 08:01:24,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:24,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644147923] [2024-11-17 08:01:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:24,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:24,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:24,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:24,229 INFO L85 PathProgramCache]: Analyzing trace with hash 55961, now seen corresponding path program 4 times [2024-11-17 08:01:24,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:24,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839023138] [2024-11-17 08:01:24,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:24,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:24,231 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:24,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:24,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:24,232 INFO L85 PathProgramCache]: Analyzing trace with hash -840295138, now seen corresponding path program 4 times [2024-11-17 08:01:24,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:24,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645633654] [2024-11-17 08:01:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:24,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:24,234 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:24,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:24,269 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:24,270 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:24,270 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:24,270 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:24,270 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:01:24,270 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:24,270 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:24,270 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:24,270 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration7_Loop [2024-11-17 08:01:24,270 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:24,270 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:24,271 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:24,276 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:24,277 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:24,279 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:24,280 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:24,299 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:24,299 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:01:24,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:24,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:24,300 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) [2024-11-17 08:01:24,301 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 [2024-11-17 08:01:24,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:24,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:24,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2024-11-17 08:01:24,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:24,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:24,331 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) [2024-11-17 08:01:24,332 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 [2024-11-17 08:01:24,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:01:24,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:25,303 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:01:25,307 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 [2024-11-17 08:01:25,308 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:25,308 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:25,308 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:25,308 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:25,308 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:01:25,308 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,308 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:25,308 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:25,308 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration7_Loop [2024-11-17 08:01:25,308 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:25,308 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:25,309 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,315 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,317 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,318 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,319 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,342 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:25,342 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:01:25,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:25,343 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) [2024-11-17 08:01:25,344 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 [2024-11-17 08:01:25,345 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:25,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:25,354 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:25,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:25,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:25,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:25,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:25,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:25,357 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:01:25,359 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:01:25,359 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:01:25,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:25,360 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) [2024-11-17 08:01:25,360 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 [2024-11-17 08:01:25,361 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:01:25,361 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:01:25,361 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:01:25,361 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_~i) = 1*rec1_~i Supporting invariants [] [2024-11-17 08:01:25,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2024-11-17 08:01:25,371 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:01:25,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 08:01:25,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 08:01:25,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:01:25,427 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-17 08:01:25,427 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) [2024-11-17 08:01:25,451 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. [2024-11-17 08:01:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-17 08:01:25,452 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) [2024-11-17 08:01:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2024-11-17 08:01:25,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 3 letters. [2024-11-17 08:01:25,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:25,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 14 letters. Loop has 3 letters. [2024-11-17 08:01:25,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:25,453 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 11 letters. Loop has 6 letters. [2024-11-17 08:01:25,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:25,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 125 transitions. [2024-11-17 08:01:25,454 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-11-17 08:01:25,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 95 states and 118 transitions. [2024-11-17 08:01:25,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2024-11-17 08:01:25,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2024-11-17 08:01:25,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 118 transitions. [2024-11-17 08:01:25,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:25,455 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 118 transitions. [2024-11-17 08:01:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 118 transitions. [2024-11-17 08:01:25,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-11-17 08:01:25,457 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) [2024-11-17 08:01:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2024-11-17 08:01:25,457 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 115 transitions. [2024-11-17 08:01:25,457 INFO L425 stractBuchiCegarLoop]: Abstraction has 93 states and 115 transitions. [2024-11-17 08:01:25,457 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-17 08:01:25,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 115 transitions. [2024-11-17 08:01:25,458 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2024-11-17 08:01:25,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:01:25,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:01:25,459 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:01:25,459 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 08:01:25,459 INFO L745 eck$LassoCheckResult]: Stem: 6702#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 6703#ULTIMATE.init_returnLabel#1 assume true;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; 6705#L25-1 call main_#t~ret6#1 := rec2(main_~x~0#1);< 6726#rec2ENTRY ~j := #in~j; 6734#L18 assume !(~j <= 0); 6735#L20-3 call #t~ret3 := rec1(~j - 1);< 6759#rec1ENTRY ~i := #in~i; 6760#L12 assume !(~i <= 0); 6715#L14-4 call #t~ret0 := rec1(~i - 2);< 6757#rec1ENTRY ~i := #in~i; 6767#L12 assume !(~i <= 0); 6716#L14-4 call #t~ret0 := rec1(~i - 2);< 6740#rec1ENTRY ~i := #in~i; 6741#L12 assume ~i <= 0;#res := 0; 6793#rec1FINAL assume true; 6791#rec1EXIT >#28#return; 6707#L14-3 call #t~ret1 := rec1(#t~ret0 - 1);< 6714#rec1ENTRY ~i := #in~i; 6764#L12 assume ~i <= 0;#res := 0; 6763#rec1FINAL assume true; 6761#rec1EXIT >#26#return; 6762#L14-2 call #t~ret2 := rec1(#t~ret1);< 6779#rec1ENTRY ~i := #in~i; 6781#L12 assume ~i <= 0;#res := 0; 6780#rec1FINAL assume true; 6777#rec1EXIT >#24#return; 6771#L14-1 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 6747#rec1FINAL assume true; 6748#rec1EXIT >#28#return; 6710#L14-3 call #t~ret1 := rec1(#t~ret0 - 1);< 6749#rec1ENTRY [2024-11-17 08:01:25,459 INFO L747 eck$LassoCheckResult]: Loop: 6749#rec1ENTRY ~i := #in~i; 6755#L12 assume !(~i <= 0); 6709#L14-4 call #t~ret0 := rec1(~i - 2);< 6738#rec1ENTRY ~i := #in~i; 6737#L12 assume !(~i <= 0); 6712#L14-4 call #t~ret0 := rec1(~i - 2);< 6739#rec1ENTRY ~i := #in~i; 6736#L12 assume ~i <= 0;#res := 0; 6729#rec1FINAL assume true; 6730#rec1EXIT >#28#return; 6707#L14-3 call #t~ret1 := rec1(#t~ret0 - 1);< 6714#rec1ENTRY ~i := #in~i; 6764#L12 assume ~i <= 0;#res := 0; 6763#rec1FINAL assume true; 6761#rec1EXIT >#26#return; 6762#L14-2 call #t~ret2 := rec1(#t~ret1);< 6779#rec1ENTRY ~i := #in~i; 6781#L12 assume ~i <= 0;#res := 0; 6780#rec1FINAL assume true; 6777#rec1EXIT >#24#return; 6771#L14-1 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 6747#rec1FINAL assume true; 6748#rec1EXIT >#28#return; 6711#L14-3 call #t~ret1 := rec1(#t~ret0 - 1);< 6749#rec1ENTRY [2024-11-17 08:01:25,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1844766641, now seen corresponding path program 1 times [2024-11-17 08:01:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:25,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059243087] [2024-11-17 08:01:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:25,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:25,463 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:25,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:25,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash 308719859, now seen corresponding path program 1 times [2024-11-17 08:01:25,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:25,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449656110] [2024-11-17 08:01:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:25,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:25,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:01:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:01:25,471 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:01:25,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:25,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1527482531, now seen corresponding path program 2 times [2024-11-17 08:01:25,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:01:25,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183365684] [2024-11-17 08:01:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:01:25,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:01:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-17 08:01:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 08:01:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-17 08:01:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 08:01:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-17 08:01:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-17 08:01:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-17 08:01:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-17 08:01:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-17 08:01:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:01:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183365684] [2024-11-17 08:01:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183365684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:01:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018055150] [2024-11-17 08:01:25,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 08:01:25,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:01:25,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:25,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2024-11-17 08:01:25,563 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:01:25,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-17 08:01:25,595 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 08:01:25,596 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 08:01:25,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 08:01:25,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-17 08:01:25,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:01:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 24 proven. 29 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-17 08:01:25,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018055150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:01:25,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:01:25,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2024-11-17 08:01:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618093398] [2024-11-17 08:01:25,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:01:25,839 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:25,840 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:25,840 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:25,840 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:25,840 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:01:25,840 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,840 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:25,840 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:25,840 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration8_Loop [2024-11-17 08:01:25,840 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:25,840 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:25,840 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,846 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,849 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,851 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,859 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:25,877 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:25,877 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:01:25,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:25,879 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) [2024-11-17 08:01:25,880 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 [2024-11-17 08:01:25,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:25,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:25,895 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:25,895 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:25,905 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 [2024-11-17 08:01:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:25,906 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) [2024-11-17 08:01:25,907 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 [2024-11-17 08:01:25,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:25,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:25,918 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:25,919 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:25,928 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 [2024-11-17 08:01:25,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:25,929 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:01:25,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2024-11-17 08:01:25,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:25,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:25,941 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:25,942 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:25,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2024-11-17 08:01:25,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:25,953 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) [2024-11-17 08:01:25,953 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 [2024-11-17 08:01:25,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:25,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:25,964 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:01:25,964 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:01:25,974 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 [2024-11-17 08:01:25,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:25,975 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) [2024-11-17 08:01:25,976 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 [2024-11-17 08:01:25,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:01:25,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:25,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2024-11-17 08:01:25,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:25,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:25,998 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) [2024-11-17 08:01:25,998 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 [2024-11-17 08:01:25,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:01:25,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:01:26,013 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:01:26,023 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 [2024-11-17 08:01:26,023 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:01:26,023 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:01:26,023 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:01:26,023 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:01:26,023 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:01:26,024 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:26,024 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:01:26,024 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:01:26,024 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1b.c_Iteration8_Loop [2024-11-17 08:01:26,024 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:01:26,024 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:01:26,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:26,028 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:26,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:26,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:26,031 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:26,035 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:01:26,054 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:01:26,054 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:01:26,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:26,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:26,056 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) [2024-11-17 08:01:26,057 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 [2024-11-17 08:01:26,057 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:26,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:26,067 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:26,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:26,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:26,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:26,068 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:26,068 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:26,069 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:26,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2024-11-17 08:01:26,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:26,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:26,080 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) [2024-11-17 08:01:26,081 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 [2024-11-17 08:01:26,082 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:26,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:26,092 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:26,092 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:26,092 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:26,092 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:26,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:26,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:26,093 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:26,103 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 [2024-11-17 08:01:26,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:26,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:26,105 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) [2024-11-17 08:01:26,106 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 [2024-11-17 08:01:26,106 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:26,116 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:26,116 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:26,116 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:26,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:26,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:26,116 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:26,116 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:26,117 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:26,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:26,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:26,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:26,129 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) [2024-11-17 08:01:26,129 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 [2024-11-17 08:01:26,130 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:26,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:26,140 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:26,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:26,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:26,140 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:26,141 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:26,141 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:26,142 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:01:26,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2024-11-17 08:01:26,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:26,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:26,153 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) [2024-11-17 08:01:26,154 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 [2024-11-17 08:01:26,155 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:01:26,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:01:26,165 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:01:26,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:01:26,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:01:26,165 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:01:26,165 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:01:26,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:01:26,170 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:01:26,171 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-17 08:01:26,172 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-17 08:01:26,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:01:26,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:01:26,173 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) [2024-11-17 08:01:26,174 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 [2024-11-17 08:01:26,174 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:01:26,175 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:01:26,175 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:01:26,175 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2024-11-17 08:01:26,184 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 [2024-11-17 08:01:26,185 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:01:26,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:26,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 08:01:26,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:26,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 08:01:26,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 08:01:26,508 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 [2024-11-17 08:01:26,508 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) [2024-11-17 08:01:26,546 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. [2024-11-17 08:01:26,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-17 08:01:26,547 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) [2024-11-17 08:01:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2024-11-17 08:01:26,547 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 30 letters. Loop has 24 letters. [2024-11-17 08:01:26,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:26,548 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:01:26,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:26,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2024-11-17 08:01:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:26,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 08:01:26,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:26,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 08:01:26,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 08:01:26,853 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 [2024-11-17 08:01:26,853 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) [2024-11-17 08:01:26,895 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. [2024-11-17 08:01:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2024-11-17 08:01:26,896 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) [2024-11-17 08:01:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2024-11-17 08:01:26,896 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 30 letters. Loop has 24 letters. [2024-11-17 08:01:26,896 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:26,897 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:01:26,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:26,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 08:01:26,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:27,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 08:01:27,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 08:01:27,187 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 [2024-11-17 08:01:27,187 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) [2024-11-17 08:01:27,364 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. [2024-11-17 08:01:27,364 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 [2024-11-17 08:01:27,365 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) [2024-11-17 08:01:27,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 40 transitions. [2024-11-17 08:01:27,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 40 transitions. Stem has 30 letters. Loop has 24 letters. [2024-11-17 08:01:27,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:27,365 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:01:27,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:01:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:27,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 08:01:27,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:01:27,533 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 08:01:27,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:01:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 08:01:27,643 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 [2024-11-17 08:01:27,644 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) [2024-11-17 08:01:27,953 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. [2024-11-17 08:01:27,953 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 [2024-11-17 08:01:27,954 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) [2024-11-17 08:01:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 51 transitions. [2024-11-17 08:01:27,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 51 transitions. Stem has 30 letters. Loop has 24 letters. [2024-11-17 08:01:27,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:27,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 51 transitions. Stem has 54 letters. Loop has 24 letters. [2024-11-17 08:01:27,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:27,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 51 transitions. Stem has 30 letters. Loop has 48 letters. [2024-11-17 08:01:27,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:01:27,955 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 410 states and 516 transitions. [2024-11-17 08:01:27,958 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 62 [2024-11-17 08:01:27,960 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 410 states to 254 states and 346 transitions. [2024-11-17 08:01:27,960 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2024-11-17 08:01:27,960 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 165 [2024-11-17 08:01:27,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 254 states and 346 transitions. [2024-11-17 08:01:27,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:01:27,960 INFO L218 hiAutomatonCegarLoop]: Abstraction has 254 states and 346 transitions. [2024-11-17 08:01:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states and 346 transitions. [2024-11-17 08:01:27,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 217. [2024-11-17 08:01:27,964 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) [2024-11-17 08:01:27,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 271 transitions. [2024-11-17 08:01:27,965 INFO L240 hiAutomatonCegarLoop]: Abstraction has 217 states and 271 transitions. [2024-11-17 08:01:27,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:01:27,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 08:01:27,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-17 08:01:27,966 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) [2024-11-17 08:01:27,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:01:27,990 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2024-11-17 08:01:27,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 38 transitions. [2024-11-17 08:01:27,991 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-17 08:01:27,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2024-11-17 08:01:27,991 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-17 08:01:27,991 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-17 08:01:27,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-17 08:01:27,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-17 08:01:27,991 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 08:01:27,991 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 08:01:27,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 08:01:27,992 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 08:01:27,992 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-11-17 08:01:27,992 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-17 08:01:27,992 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-17 08:01:27,992 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-17 08:01:27,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.11 08:01:27 BoogieIcfgContainer [2024-11-17 08:01:27,998 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-17 08:01:27,998 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 08:01:27,998 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 08:01:27,998 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 08:01:27,999 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:01:17" (3/4) ... [2024-11-17 08:01:28,000 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-17 08:01:28,001 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 08:01:28,001 INFO L158 Benchmark]: Toolchain (without parser) took 11068.90ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 95.8MB in the beginning and 75.8MB in the end (delta: 20.0MB). Peak memory consumption was 60.1MB. Max. memory is 16.1GB. [2024-11-17 08:01:28,001 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:01:28,002 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.30ms. Allocated memory is still 165.7MB. Free memory was 95.8MB in the beginning and 84.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-17 08:01:28,002 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.89ms. Allocated memory is still 165.7MB. Free memory was 84.8MB in the beginning and 83.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 08:01:28,002 INFO L158 Benchmark]: Boogie Preprocessor took 14.16ms. Allocated memory is still 165.7MB. Free memory was 83.3MB in the beginning and 82.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 08:01:28,002 INFO L158 Benchmark]: IcfgBuilder took 228.95ms. Allocated memory is still 165.7MB. Free memory was 82.0MB in the beginning and 71.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-17 08:01:28,002 INFO L158 Benchmark]: BuchiAutomizer took 10629.16ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 71.1MB in the beginning and 75.8MB in the end (delta: -4.7MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2024-11-17 08:01:28,002 INFO L158 Benchmark]: Witness Printer took 2.85ms. Allocated memory is still 203.4MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:01:28,003 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 82.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 170.30ms. Allocated memory is still 165.7MB. Free memory was 95.8MB in the beginning and 84.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.89ms. Allocated memory is still 165.7MB. Free memory was 84.8MB in the beginning and 83.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.16ms. Allocated memory is still 165.7MB. Free memory was 83.3MB in the beginning and 82.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 228.95ms. Allocated memory is still 165.7MB. Free memory was 82.0MB in the beginning and 71.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 10629.16ms. Allocated memory was 165.7MB in the beginning and 203.4MB in the end (delta: 37.7MB). Free memory was 71.1MB in the beginning and 75.8MB in the end (delta: -4.7MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * Witness Printer took 2.85ms. Allocated memory is still 203.4MB. Free memory is still 75.8MB. 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 10.5s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 5.8s. Construction of modules took 0.7s. Büchi inclusion checks took 3.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 249 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 1, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 38/58 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 339 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 312 mSDsluCounter, 911 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 602 mSDsCounter, 287 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 984 IncrementalHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 287 mSolverCounterUnsat, 309 mSDtfsCounter, 984 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT3 conc0 concLT3 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf92 smp100 dnf100 smp100 tf111 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-17 08:01:28,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-17 08:01:28,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-17 08:01:28,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-17 08:01:28,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-17 08:01:28,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE