./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/recursive-simple/afterrec_2calls-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-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 32bit --witnessprinter.graph.data.programhash b329d37fd8bf911c1223006468d56bb06a44739627ad380de3f708faf818709f --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 07:32:15,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 07:32:15,634 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2025-03-09 07:32:15,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 07:32:15,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 07:32:15,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2025-03-09 07:32:15,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 07:32:15,665 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 07:32:15,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 07:32:15,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 07:32:15,666 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 07:32:15,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 07:32:15,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 07:32:15,667 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Use old map elimination=false [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-03-09 07:32:15,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-03-09 07:32:15,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-03-09 07:32:15,668 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 07:32:15,669 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 07:32:15,669 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 07:32:15,669 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-03-09 07:32:15,669 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 07:32:15,669 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 07:32:15,669 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 07:32:15,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 07:32:15,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 07:32:15,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 07:32:15,670 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-03-09 07:32:15,671 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/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 [2025-03-09 07:32:15,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 07:32:15,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 07:32:15,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 07:32:15,953 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 07:32:15,953 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 07:32:15,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2025-03-09 07:32:17,176 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa9f4bab/007cdfeef94b4a2d8e68d522175dd7ed/FLAG7a1e133f4 [2025-03-09 07:32:17,386 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 07:32:17,388 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/afterrec_2calls-2.c [2025-03-09 07:32:17,395 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa9f4bab/007cdfeef94b4a2d8e68d522175dd7ed/FLAG7a1e133f4 [2025-03-09 07:32:17,436 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2aa9f4bab/007cdfeef94b4a2d8e68d522175dd7ed [2025-03-09 07:32:17,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 07:32:17,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 07:32:17,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 07:32:17,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 07:32:17,446 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 07:32:17,447 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ef64e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17, skipping insertion in model container [2025-03-09 07:32:17,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,460 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 07:32:17,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:32:17,567 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 07:32:17,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 07:32:17,590 INFO L204 MainTranslator]: Completed translation [2025-03-09 07:32:17,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17 WrapperNode [2025-03-09 07:32:17,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 07:32:17,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 07:32:17,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 07:32:17,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 07:32:17,596 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,601 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,610 INFO L138 Inliner]: procedures = 13, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2025-03-09 07:32:17,611 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 07:32:17,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 07:32:17,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 07:32:17,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 07:32:17,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,619 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,627 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]. [2025-03-09 07:32:17,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,631 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,635 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 07:32:17,637 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 07:32:17,638 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 07:32:17,638 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 07:32:17,639 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (1/1) ... [2025-03-09 07:32:17,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:17,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:32:17,665 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) [2025-03-09 07:32:17,672 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 [2025-03-09 07:32:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 07:32:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-03-09 07:32:17,688 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-03-09 07:32:17,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 07:32:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 07:32:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 07:32:17,689 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-09 07:32:17,689 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-09 07:32:17,733 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 07:32:17,734 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 07:32:17,800 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2025-03-09 07:32:17,801 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 07:32:17,807 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 07:32:17,808 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 07:32:17,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:32:17 BoogieIcfgContainer [2025-03-09 07:32:17,808 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 07:32:17,809 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-03-09 07:32:17,809 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-03-09 07:32:17,814 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-03-09 07:32:17,814 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:32:17,815 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.03 07:32:17" (1/3) ... [2025-03-09 07:32:17,817 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73cb0d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:32:17, skipping insertion in model container [2025-03-09 07:32:17,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:32:17,817 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 07:32:17" (2/3) ... [2025-03-09 07:32:17,817 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73cb0d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.03 07:32:17, skipping insertion in model container [2025-03-09 07:32:17,817 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-03-09 07:32:17,817 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:32:17" (3/3) ... [2025-03-09 07:32:17,818 INFO L363 chiAutomizerObserver]: Analyzing ICFG afterrec_2calls-2.c [2025-03-09 07:32:17,859 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-03-09 07:32:17,860 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-03-09 07:32:17,860 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-03-09 07:32:17,860 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-03-09 07:32:17,861 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-03-09 07:32:17,862 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-03-09 07:32:17,862 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-03-09 07:32:17,862 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-03-09 07:32:17,867 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) [2025-03-09 07:32:17,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2025-03-09 07:32:17,885 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:32:17,885 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:32:17,889 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-09 07:32:17,890 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2025-03-09 07:32:17,890 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-03-09 07:32:17,890 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) [2025-03-09 07:32:17,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2025-03-09 07:32:17,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-03-09 07:32:17,893 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-03-09 07:32:17,894 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-03-09 07:32:17,895 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2025-03-09 07:32:17,902 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(20, 2);call #Ultimate.allocInit(12, 3);" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;" "call f(2);"< [2025-03-09 07:32:17,903 INFO L754 eck$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);"< [2025-03-09 07:32:17,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:32:17,911 INFO L85 PathProgramCache]: Analyzing trace with hash 41689, now seen corresponding path program 1 times [2025-03-09 07:32:17,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:32:17,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103637898] [2025-03-09 07:32:17,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:32:17,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:32:17,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:32:17,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:32:17,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:32:17,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:32:17,997 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:32:18,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:32:18,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:32:18,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:32:18,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:32:18,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:32:18,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:32:18,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1094154885, now seen corresponding path program 1 times [2025-03-09 07:32:18,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:32:18,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192785236] [2025-03-09 07:32:18,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:32:18,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:32:18,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 07:32:18,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 07:32:18,043 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:32:18,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:32:18,044 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-09 07:32:18,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 07:32:18,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 07:32:18,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:32:18,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-09 07:32:18,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-09 07:32:18,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:32:18,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1795646627, now seen corresponding path program 1 times [2025-03-09 07:32:18,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 07:32:18,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327683463] [2025-03-09 07:32:18,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 07:32:18,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 07:32:18,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 07:32:18,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 07:32:18,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:32:18,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:32:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 07:32:18,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 07:32:18,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327683463] [2025-03-09 07:32:18,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327683463] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 07:32:18,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 07:32:18,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 07:32:18,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089600837] [2025-03-09 07:32:18,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 07:32:18,324 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 07:32:18,324 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 07:32:18,324 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 07:32:18,325 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 07:32:18,325 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-03-09 07:32:18,325 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:18,326 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 07:32:18,327 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 07:32:18,327 INFO L132 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2025-03-09 07:32:18,327 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 07:32:18,327 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 07:32:18,336 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:32:18,343 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:32:18,351 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:32:18,353 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:32:18,388 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 07:32:18,389 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-03-09 07:32:18,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:18,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:32:18,393 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) [2025-03-09 07:32:18,395 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 [2025-03-09 07:32:18,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 07:32:18,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:32:18,411 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-03-09 07:32:18,411 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: [] [2025-03-09 07:32:18,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2025-03-09 07:32:18,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:18,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:32:18,419 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) [2025-03-09 07:32:18,420 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 [2025-03-09 07:32:18,423 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-03-09 07:32:18,423 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:32:18,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2025-03-09 07:32:18,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:18,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:32:18,444 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) [2025-03-09 07:32:18,445 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 [2025-03-09 07:32:18,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-03-09 07:32:18,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-03-09 07:32:18,473 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-03-09 07:32:18,478 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 [2025-03-09 07:32:18,478 INFO L204 LassoAnalysis]: Preferences: [2025-03-09 07:32:18,478 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-03-09 07:32:18,478 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-03-09 07:32:18,478 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-03-09 07:32:18,478 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-03-09 07:32:18,478 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:18,478 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-03-09 07:32:18,479 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-03-09 07:32:18,479 INFO L132 ssoRankerPreferences]: Filename of dumped script: afterrec_2calls-2.c_Iteration1_Loop [2025-03-09 07:32:18,479 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-03-09 07:32:18,479 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-03-09 07:32:18,480 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:32:18,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:32:18,485 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:32:18,495 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-03-09 07:32:18,524 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-03-09 07:32:18,531 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-03-09 07:32:18,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:18,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:32:18,534 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) [2025-03-09 07:32:18,539 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 [2025-03-09 07:32:18,542 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 [2025-03-09 07:32:18,556 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 07:32:18,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 07:32:18,558 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 07:32:18,558 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 07:32:18,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 07:32:18,565 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 07:32:18,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 07:32:18,568 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 07:32:18,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2025-03-09 07:32:18,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:18,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:32:18,576 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) [2025-03-09 07:32:18,578 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 [2025-03-09 07:32:18,580 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 [2025-03-09 07:32:18,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 07:32:18,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 07:32:18,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 07:32:18,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 07:32:18,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 07:32:18,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 07:32:18,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 07:32:18,597 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-03-09 07:32:18,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2025-03-09 07:32:18,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:32:18,607 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) [2025-03-09 07:32:18,608 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 [2025-03-09 07:32:18,609 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 [2025-03-09 07:32:18,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-03-09 07:32:18,621 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-03-09 07:32:18,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-03-09 07:32:18,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-03-09 07:32:18,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-03-09 07:32:18,622 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-03-09 07:32:18,622 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-03-09 07:32:18,626 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-03-09 07:32:18,629 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-03-09 07:32:18,632 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-03-09 07:32:18,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-03-09 07:32:18,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 07:32:18,640 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) [2025-03-09 07:32:18,641 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 [2025-03-09 07:32:18,642 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-03-09 07:32:18,642 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-03-09 07:32:18,642 INFO L474 LassoAnalysis]: Proved termination. [2025-03-09 07:32:18,643 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n#1) = 1*f_#in~n#1 Supporting invariants [] [2025-03-09 07:32:18,652 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 [2025-03-09 07:32:18,657 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-03-09 07:32:18,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 07:32:18,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 07:32:18,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 07:32:18,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:32:18,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:32:18,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 07:32:18,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 07:32:18,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 07:32:18,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 07:32:18,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 07:32:18,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 07:32:18,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-09 07:32:18,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 07:32:18,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 07:32:18,843 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 [2025-03-09 07:32:18,845 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) [2025-03-09 07:32:19,016 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. [2025-03-09 07:32:19,018 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 [2025-03-09 07:32:19,022 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) [2025-03-09 07:32:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 26 transitions. [2025-03-09 07:32:19,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2025-03-09 07:32:19,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:32:19,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 26 transitions. Stem has 9 letters. Loop has 6 letters. [2025-03-09 07:32:19,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:32:19,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 26 transitions. Stem has 3 letters. Loop has 12 letters. [2025-03-09 07:32:19,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-03-09 07:32:19,031 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 67 transitions. [2025-03-09 07:32:19,034 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 07:32:19,035 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2025-03-09 07:32:19,036 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-09 07:32:19,036 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-09 07:32:19,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-09 07:32:19,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 07:32:19,037 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:32:19,037 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:32:19,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 07:32:19,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 07:32:19,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 07:32:19,040 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) [2025-03-09 07:32:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-09 07:32:19,042 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2025-03-09 07:32:19,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2025-03-09 07:32:19,043 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 07:32:19,043 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2025-03-09 07:32:19,043 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2025-03-09 07:32:19,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2025-03-09 07:32:19,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2025-03-09 07:32:19,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2025-03-09 07:32:19,043 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:32:19,043 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:32:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-09 07:32:19,044 INFO L432 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-09 07:32:19,044 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-03-09 07:32:19,044 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2025-03-09 07:32:19,044 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2025-03-09 07:32:19,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2025-03-09 07:32:19,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.03 07:32:19 BoogieIcfgContainer [2025-03-09 07:32:19,052 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-03-09 07:32:19,053 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 07:32:19,053 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 07:32:19,053 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 07:32:19,054 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 07:32:17" (3/4) ... [2025-03-09 07:32:19,056 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-09 07:32:19,056 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 07:32:19,057 INFO L158 Benchmark]: Toolchain (without parser) took 1615.34ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 40.3MB in the end (delta: 84.0MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2025-03-09 07:32:19,058 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:32:19,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.80ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 114.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 07:32:19,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.21ms. Allocated memory is still 167.8MB. Free memory was 114.4MB in the beginning and 113.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:32:19,058 INFO L158 Benchmark]: Boogie Preprocessor took 25.14ms. Allocated memory is still 167.8MB. Free memory was 113.0MB in the beginning and 112.2MB in the end (delta: 762.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:32:19,059 INFO L158 Benchmark]: IcfgBuilder took 171.42ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 102.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 07:32:19,059 INFO L158 Benchmark]: BuchiAutomizer took 1243.37ms. Allocated memory is still 167.8MB. Free memory was 102.8MB in the beginning and 41.0MB in the end (delta: 61.8MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-03-09 07:32:19,059 INFO L158 Benchmark]: Witness Printer took 3.64ms. Allocated memory is still 167.8MB. Free memory was 41.0MB in the beginning and 40.3MB in the end (delta: 698.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 07:32:19,061 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.80ms. Allocated memory is still 167.8MB. Free memory was 124.3MB in the beginning and 114.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.21ms. Allocated memory is still 167.8MB. Free memory was 114.4MB in the beginning and 113.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.14ms. Allocated memory is still 167.8MB. Free memory was 113.0MB in the beginning and 112.2MB in the end (delta: 762.1kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 171.42ms. Allocated memory is still 167.8MB. Free memory was 112.2MB in the beginning and 102.8MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1243.37ms. Allocated memory is still 167.8MB. Free memory was 102.8MB in the beginning and 41.0MB in the end (delta: 61.8MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Witness Printer took 3.64ms. Allocated memory is still 167.8MB. Free memory was 41.0MB in the beginning and 40.3MB in the end (delta: 698.4kB). 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 1.2s 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, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s 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: 35ms 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! [2025-03-09 07:32:19,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-03-09 07:32:19,277 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