./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b329d37fd8bf911c1223006468d56bb06a44739627ad380de3f708faf818709f --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 19:48:07,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 19:48:07,298 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-02-06 19:48:07,307 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 19:48:07,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 19:48:07,310 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-02-06 19:48:07,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 19:48:07,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 19:48:07,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 19:48:07,343 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 19:48:07,344 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 19:48:07,344 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 19:48:07,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 19:48:07,345 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 19:48:07,345 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * Use old map elimination=false [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-02-06 19:48:07,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 19:48:07,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 19:48:07,347 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 19:48:07,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 19:48:07,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 19:48:07,348 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-02-06 19:48:07,348 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b329d37fd8bf911c1223006468d56bb06a44739627ad380de3f708faf818709f [2025-02-06 19:48:07,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 19:48:07,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 19:48:07,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 19:48:07,675 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 19:48:07,675 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 19:48:07,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2025-02-06 19:48:08,933 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6d2f2a73e/dbeb24e248a34edbb9936a2e4fa4c75b/FLAGa8843d50b [2025-02-06 19:48:09,215 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 19:48:09,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2025-02-06 19:48:09,234 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6d2f2a73e/dbeb24e248a34edbb9936a2e4fa4c75b/FLAGa8843d50b [2025-02-06 19:48:09,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6d2f2a73e/dbeb24e248a34edbb9936a2e4fa4c75b [2025-02-06 19:48:09,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 19:48:09,264 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 19:48:09,266 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 19:48:09,266 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 19:48:09,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 19:48:09,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7575d929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09, skipping insertion in model container [2025-02-06 19:48:09,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 19:48:09,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 19:48:09,423 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 19:48:09,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 19:48:09,443 INFO L204 MainTranslator]: Completed translation [2025-02-06 19:48:09,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09 WrapperNode [2025-02-06 19:48:09,444 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 19:48:09,445 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 19:48:09,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 19:48:09,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 19:48:09,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,457 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,468 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2025-02-06 19:48:09,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 19:48:09,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 19:48:09,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 19:48:09,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 19:48:09,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,477 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,485 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 19:48:09,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,487 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,490 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,493 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 19:48:09,493 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 19:48:09,493 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 19:48:09,493 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 19:48:09,494 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (1/1) ... [2025-02-06 19:48:09,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:09,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:09,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:48:09,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-02-06 19:48:09,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 19:48:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-02-06 19:48:09,552 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-02-06 19:48:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 19:48:09,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 19:48:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 19:48:09,552 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-02-06 19:48:09,553 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-02-06 19:48:09,604 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 19:48:09,607 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 19:48:09,694 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2025-02-06 19:48:09,695 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 19:48:09,705 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 19:48:09,705 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 19:48:09,706 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:48:09 BoogieIcfgContainer [2025-02-06 19:48:09,706 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 19:48:09,707 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-02-06 19:48:09,707 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-02-06 19:48:09,711 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-02-06 19:48:09,712 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:48:09,712 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.02 07:48:09" (1/3) ... [2025-02-06 19:48:09,713 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fdcaa90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 07:48:09, skipping insertion in model container [2025-02-06 19:48:09,713 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:48:09,714 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 07:48:09" (2/3) ... [2025-02-06 19:48:09,714 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2fdcaa90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.02 07:48:09, skipping insertion in model container [2025-02-06 19:48:09,714 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-02-06 19:48:09,715 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:48:09" (3/3) ... [2025-02-06 19:48:09,715 INFO L363 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-2.c [2025-02-06 19:48:09,767 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-02-06 19:48:09,768 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-02-06 19:48:09,768 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-02-06 19:48:09,768 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-02-06 19:48:09,768 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-02-06 19:48:09,768 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-02-06 19:48:09,769 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-02-06 19:48:09,769 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-02-06 19:48:09,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 19:48:09,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2025-02-06 19:48:09,791 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:09,791 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:09,796 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-06 19:48:09,796 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2025-02-06 19:48:09,796 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-02-06 19:48:09,797 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 19:48:09,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2025-02-06 19:48:09,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-02-06 19:48:09,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-02-06 19:48:09,800 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-02-06 19:48:09,800 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2025-02-06 19:48:09,806 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(20, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;" "call f(2);"< [2025-02-06 19:48:09,807 INFO L754 eck$LassoCheckResult]: Loop: "~n#1 := #in~n#1;" "assume !(~n#1 < 3);#t~post6#1 := ~n#1;~n#1 := #t~post6#1 - 1;havoc #t~post6#1;" "call f2(~n#1);"< "~n#1 := #in~n#1;" "assume !(~n#1 < 3);#t~post7#1 := ~n#1;~n#1 := #t~post7#1 - 1;havoc #t~post7#1;" "call f(~n#1);"< [2025-02-06 19:48:09,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:09,813 INFO L85 PathProgramCache]: Analyzing trace with hash 41689, now seen corresponding path program 1 times [2025-02-06 19:48:09,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:09,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608279238] [2025-02-06 19:48:09,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:09,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:48:09,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:48:09,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:09,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:09,895 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:09,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:48:09,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:48:09,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:09,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:09,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:09,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:09,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1094154885, now seen corresponding path program 1 times [2025-02-06 19:48:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:09,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036302383] [2025-02-06 19:48:09,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:09,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:09,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 19:48:09,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 19:48:09,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:09,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:09,941 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-06 19:48:09,943 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 19:48:09,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 19:48:09,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:09,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-06 19:48:09,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-06 19:48:09,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1795646627, now seen corresponding path program 1 times [2025-02-06 19:48:09,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 19:48:09,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982989517] [2025-02-06 19:48:09,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 19:48:09,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 19:48:09,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 19:48:09,975 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 19:48:09,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:09,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:10,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 19:48:10,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982989517] [2025-02-06 19:48:10,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982989517] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 19:48:10,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 19:48:10,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 19:48:10,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484621760] [2025-02-06 19:48:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 19:48:10,264 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:10,265 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:10,265 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:10,265 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:10,265 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-02-06 19:48:10,265 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:10,265 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:10,266 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:10,266 INFO L132 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2025-02-06 19:48:10,266 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:10,266 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:10,279 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:10,290 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:10,299 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:10,302 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:10,336 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:10,337 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-02-06 19:48:10,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:10,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:10,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:48:10,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2025-02-06 19:48:10,345 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:10,345 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:10,361 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-02-06 19:48:10,362 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f2_#in~n#1=0} Honda state: {f2_#in~n#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-02-06 19:48:10,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-02-06 19:48:10,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:10,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:10,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:48:10,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2025-02-06 19:48:10,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-02-06 19:48:10,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:10,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2025-02-06 19:48:10,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:10,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:10,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:48:10,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2025-02-06 19:48:10,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-02-06 19:48:10,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-02-06 19:48:10,425 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-02-06 19:48:10,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2025-02-06 19:48:10,431 INFO L204 LassoAnalysis]: Preferences: [2025-02-06 19:48:10,432 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-02-06 19:48:10,432 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-02-06 19:48:10,432 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-02-06 19:48:10,432 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-02-06 19:48:10,432 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:10,432 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-02-06 19:48:10,432 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-02-06 19:48:10,432 INFO L132 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2025-02-06 19:48:10,432 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-02-06 19:48:10,432 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-02-06 19:48:10,433 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:10,437 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:10,440 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:10,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-02-06 19:48:10,478 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-02-06 19:48:10,482 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-02-06 19:48:10,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:10,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:10,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:48:10,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2025-02-06 19:48:10,489 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:48:10,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:10,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:10,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:10,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:10,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:10,512 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:10,512 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:10,515 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:10,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2025-02-06 19:48:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:10,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:10,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:48:10,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2025-02-06 19:48:10,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2025-02-06 19:48:10,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:10,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:10,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:10,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:10,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:10,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:10,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:10,539 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-02-06 19:48:10,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-02-06 19:48:10,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:10,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:10,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:48:10,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2025-02-06 19:48:10,550 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 [2025-02-06 19:48:10,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-02-06 19:48:10,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-02-06 19:48:10,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-02-06 19:48:10,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-02-06 19:48:10,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-02-06 19:48:10,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-02-06 19:48:10,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-02-06 19:48:10,564 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-02-06 19:48:10,566 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-02-06 19:48:10,569 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-02-06 19:48:10,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-02-06 19:48:10,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 19:48:10,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-02-06 19:48:10,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2025-02-06 19:48:10,577 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-02-06 19:48:10,577 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-02-06 19:48:10,577 INFO L474 LassoAnalysis]: Proved termination. [2025-02-06 19:48:10,578 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n#1) = 1*f_#in~n#1 Supporting invariants [] [2025-02-06 19:48:10,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2025-02-06 19:48:10,587 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-02-06 19:48:10,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 19:48:10,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-06 19:48:10,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-06 19:48:10,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:10,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:10,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 19:48:10,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:10,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 19:48:10,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 19:48:10,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 19:48:10,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 19:48:10,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 19:48:10,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 19:48:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 19:48:10,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2025-02-06 19:48:10,806 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 [2025-02-06 19:48:10,808 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:48:11,012 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 61 states and 67 transitions. Complement of second has 30 states. [2025-02-06 19:48:11,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2025-02-06 19:48:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:48:11,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 26 transitions. [2025-02-06 19:48:11,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2025-02-06 19:48:11,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:11,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 26 transitions. Stem has 9 letters. Loop has 6 letters. [2025-02-06 19:48:11,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:11,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 26 transitions. Stem has 3 letters. Loop has 12 letters. [2025-02-06 19:48:11,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-02-06 19:48:11,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 67 transitions. [2025-02-06 19:48:11,041 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 19:48:11,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2025-02-06 19:48:11,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-06 19:48:11,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-06 19:48:11,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-06 19:48:11,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 19:48:11,045 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:11,046 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:11,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 19:48:11,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 19:48:11,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 19:48:11,049 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 19:48:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 19:48:11,051 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-02-06 19:48:11,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-02-06 19:48:11,052 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 19:48:11,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-02-06 19:48:11,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-02-06 19:48:11,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-02-06 19:48:11,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-02-06 19:48:11,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-02-06 19:48:11,052 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:11,053 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 19:48:11,053 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-06 19:48:11,054 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-02-06 19:48:11,054 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-02-06 19:48:11,054 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-02-06 19:48:11,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-02-06 19:48:11,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.02 07:48:11 BoogieIcfgContainer [2025-02-06 19:48:11,062 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-02-06 19:48:11,063 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 19:48:11,063 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 19:48:11,063 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 19:48:11,064 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 07:48:09" (3/4) ... [2025-02-06 19:48:11,066 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-02-06 19:48:11,067 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 19:48:11,069 INFO L158 Benchmark]: Toolchain (without parser) took 1803.76ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 96.4MB in the end (delta: 15.4MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2025-02-06 19:48:11,070 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:48:11,070 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.09ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 101.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 19:48:11,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.15ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 100.3MB in the end (delta: 987.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:48:11,072 INFO L158 Benchmark]: Boogie Preprocessor took 24.03ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 99.3MB in the end (delta: 999.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:48:11,074 INFO L158 Benchmark]: IcfgBuilder took 212.92ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 90.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 19:48:11,074 INFO L158 Benchmark]: BuchiAutomizer took 1355.70ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 96.4MB in the end (delta: -6.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:48:11,074 INFO L158 Benchmark]: Witness Printer took 4.03ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 96.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 19:48:11,076 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 179.09ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 101.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.15ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 100.3MB in the end (delta: 987.2kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.03ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 99.3MB in the end (delta: 999.9kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 212.92ms. Allocated memory is still 142.6MB. Free memory was 99.3MB in the beginning and 90.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1355.70ms. Allocated memory is still 142.6MB. Free memory was 90.0MB in the beginning and 96.4MB in the end (delta: -6.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.03ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 96.4MB in the end (delta: 27.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 10 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization No data available. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49 IncrementalHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 7 mSDtfsCounter, 49 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 32ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2025-02-06 19:48:11,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE