./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 551b0097 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/termination-crafted/MutualRecursion_1a.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 06:59:50,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 06:59:50,405 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2025-01-10 06:59:50,414 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 06:59:50,415 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 06:59:50,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 06:59:50,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 06:59:50,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 06:59:50,445 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 06:59:50,445 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 06:59:50,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 06:59:50,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 06:59:50,446 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 06:59:50,447 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-01-10 06:59:50,447 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-01-10 06:59:50,447 INFO L153 SettingsManager]: * Use old map elimination=false [2025-01-10 06:59:50,447 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-01-10 06:59:50,447 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-01-10 06:59:50,447 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-01-10 06:59:50,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 06:59:50,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-01-10 06:59:50,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 06:59:50,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 06:59:50,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-01-10 06:59:50,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-01-10 06:59:50,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-01-10 06:59:50,448 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 06:59:50,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-10 06:59:50,448 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-01-10 06:59:50,448 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 06:59:50,448 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 06:59:50,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 06:59:50,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 06:59:50,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 06:59:50,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 06:59:50,449 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-01-10 06:59:50,449 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 [2025-01-10 06:59:50,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 06:59:50,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 06:59:50,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 06:59:50,700 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 06:59:50,700 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 06:59:50,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2025-01-10 06:59:51,893 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03a97cdda/171b3e7ad6104157ab7edc294b4d1cf1/FLAG229914195 [2025-01-10 06:59:52,098 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 06:59:52,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2025-01-10 06:59:52,105 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03a97cdda/171b3e7ad6104157ab7edc294b4d1cf1/FLAG229914195 [2025-01-10 06:59:52,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/03a97cdda/171b3e7ad6104157ab7edc294b4d1cf1 [2025-01-10 06:59:52,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 06:59:52,145 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 06:59:52,146 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 06:59:52,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 06:59:52,151 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 06:59:52,152 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b422134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52, skipping insertion in model container [2025-01-10 06:59:52,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,164 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 06:59:52,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:59:52,262 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 06:59:52,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 06:59:52,281 INFO L204 MainTranslator]: Completed translation [2025-01-10 06:59:52,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52 WrapperNode [2025-01-10 06:59:52,282 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 06:59:52,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 06:59:52,283 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 06:59:52,283 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 06:59:52,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,301 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 7 [2025-01-10 06:59:52,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 06:59:52,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 06:59:52,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 06:59:52,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 06:59:52,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,315 INFO L175 MemorySlicer]: No memory access in input program. [2025-01-10 06:59:52,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,317 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,319 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 06:59:52,321 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 06:59:52,321 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 06:59:52,321 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 06:59:52,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (1/1) ... [2025-01-10 06:59:52,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:52,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:52,354 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) [2025-01-10 06:59:52,359 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 [2025-01-10 06:59:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure f [2025-01-10 06:59:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2025-01-10 06:59:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure g [2025-01-10 06:59:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2025-01-10 06:59:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 06:59:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 06:59:52,419 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 06:59:52,420 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 06:59:52,507 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-01-10 06:59:52,508 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 06:59:52,516 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 06:59:52,517 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-10 06:59:52,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:59:52 BoogieIcfgContainer [2025-01-10 06:59:52,517 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 06:59:52,518 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-01-10 06:59:52,518 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-01-10 06:59:52,522 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-01-10 06:59:52,523 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 06:59:52,523 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.01 06:59:52" (1/3) ... [2025-01-10 06:59:52,524 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@121c0c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.01 06:59:52, skipping insertion in model container [2025-01-10 06:59:52,524 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 06:59:52,524 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:59:52" (2/3) ... [2025-01-10 06:59:52,524 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@121c0c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.01 06:59:52, skipping insertion in model container [2025-01-10 06:59:52,524 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-01-10 06:59:52,525 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:59:52" (3/3) ... [2025-01-10 06:59:52,525 INFO L363 chiAutomizerObserver]: Analyzing ICFG MutualRecursion_1a.c [2025-01-10 06:59:52,573 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-01-10 06:59:52,573 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-01-10 06:59:52,573 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-01-10 06:59:52,573 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-01-10 06:59:52,574 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-01-10 06:59:52,574 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-01-10 06:59:52,574 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-01-10 06:59:52,574 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-01-10 06:59:52,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-10 06:59:52,592 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-01-10 06:59:52,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 06:59:52,594 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 06:59:52,598 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-01-10 06:59:52,598 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2025-01-10 06:59:52,599 INFO L338 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-01-10 06:59:52,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-01-10 06:59:52,600 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-01-10 06:59:52,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 06:59:52,602 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 06:59:52,602 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2025-01-10 06:59:52,602 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2025-01-10 06:59:52,607 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;havoc main_#t~nondet4#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "call main_#t~ret5#1 := g(main_~x~0#1);"< [2025-01-10 06:59:52,608 INFO L754 eck$LassoCheckResult]: Loop: "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret2 := f(~x - 1);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret0 := g(~x);"< [2025-01-10 06:59:52,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:59:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash 47743, now seen corresponding path program 1 times [2025-01-10 06:59:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:59:52,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356237717] [2025-01-10 06:59:52,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:59:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:59:52,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:59:52,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:59:52,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:52,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:52,664 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:59:52,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:59:52,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:59:52,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:52,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:52,680 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:59:52,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:59:52,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1158065693, now seen corresponding path program 1 times [2025-01-10 06:59:52,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:59:52,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056488811] [2025-01-10 06:59:52,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:59:52,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:59:52,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:59:52,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:59:52,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:52,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:52,701 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:59:52,703 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:59:52,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:59:52,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:52,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:52,709 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:59:52,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:59:52,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1788538341, now seen corresponding path program 1 times [2025-01-10 06:59:52,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:59:52,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868371628] [2025-01-10 06:59:52,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:59:52,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:59:52,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:59:52,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:59:52,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:52,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:52,720 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:59:52,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 06:59:52,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 06:59:52,726 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:52,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:52,727 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:59:52,857 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 06:59:52,857 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 06:59:52,857 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 06:59:52,857 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 06:59:52,857 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2025-01-10 06:59:52,858 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:52,858 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 06:59:52,858 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 06:59:52,858 INFO L132 ssoRankerPreferences]: Filename of dumped script: MutualRecursion_1a.c_Iteration1_Loop [2025-01-10 06:59:52,858 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 06:59:52,858 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 06:59:52,867 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:52,873 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:52,876 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:52,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:52,881 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:52,887 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:52,889 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:52,891 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:52,947 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 06:59:52,948 INFO L365 LassoAnalysis]: Checking for nontermination... [2025-01-10 06:59:52,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:52,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:52,952 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) [2025-01-10 06:59:52,954 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 [2025-01-10 06:59:52,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 06:59:52,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 06:59:52,969 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 06:59:52,969 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f_#res=0} Honda state: {f_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 06:59:52,975 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 [2025-01-10 06:59:52,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:52,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:52,978 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) [2025-01-10 06:59:52,979 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 [2025-01-10 06:59:52,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 06:59:52,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 06:59:52,992 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 06:59:52,992 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret2=0} Honda state: {g_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 06:59:52,998 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 [2025-01-10 06:59:52,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:52,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,000 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) [2025-01-10 06:59:53,001 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 [2025-01-10 06:59:53,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 06:59:53,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 06:59:53,013 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 06:59:53,013 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret3=0} Honda state: {g_#t~ret3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 06:59:53,018 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 [2025-01-10 06:59:53,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,020 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) [2025-01-10 06:59:53,021 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 [2025-01-10 06:59:53,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 06:59:53,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 06:59:53,034 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2025-01-10 06:59:53,034 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2025-01-10 06:59:53,040 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 [2025-01-10 06:59:53,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,043 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) [2025-01-10 06:59:53,044 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 [2025-01-10 06:59:53,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2025-01-10 06:59:53,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 06:59:53,061 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 [2025-01-10 06:59:53,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,064 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) [2025-01-10 06:59:53,065 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 [2025-01-10 06:59:53,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2025-01-10 06:59:53,066 INFO L160 nArgumentSynthesizer]: Using integer mode. [2025-01-10 06:59:53,099 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2025-01-10 06:59:53,104 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 [2025-01-10 06:59:53,104 INFO L204 LassoAnalysis]: Preferences: [2025-01-10 06:59:53,104 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2025-01-10 06:59:53,104 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2025-01-10 06:59:53,104 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2025-01-10 06:59:53,104 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2025-01-10 06:59:53,104 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,104 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2025-01-10 06:59:53,104 INFO L131 ssoRankerPreferences]: Path of dumped script: [2025-01-10 06:59:53,104 INFO L132 ssoRankerPreferences]: Filename of dumped script: MutualRecursion_1a.c_Iteration1_Loop [2025-01-10 06:59:53,104 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2025-01-10 06:59:53,104 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2025-01-10 06:59:53,105 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:53,109 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:53,111 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:53,113 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:53,115 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:53,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:53,119 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:53,124 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2025-01-10 06:59:53,154 INFO L259 LassoAnalysis]: Preprocessing complete. [2025-01-10 06:59:53,156 INFO L451 LassoAnalysis]: Using template 'affine'. [2025-01-10 06:59:53,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,160 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) [2025-01-10 06:59:53,162 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 [2025-01-10 06:59:53,162 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 [2025-01-10 06:59:53,173 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 06:59:53,173 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 06:59:53,173 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 06:59:53,173 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 06:59:53,173 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 06:59:53,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 06:59:53,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 06:59:53,179 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 06:59:53,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2025-01-10 06:59:53,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,190 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2025-01-10 06:59:53,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2025-01-10 06:59:53,191 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 [2025-01-10 06:59:53,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 06:59:53,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 06:59:53,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 06:59:53,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 06:59:53,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 06:59:53,203 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 06:59:53,203 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 06:59:53,204 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 06:59:53,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2025-01-10 06:59:53,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,216 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2025-01-10 06:59:53,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2025-01-10 06:59:53,219 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 [2025-01-10 06:59:53,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 06:59:53,230 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 06:59:53,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 06:59:53,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 06:59:53,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 06:59:53,231 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 06:59:53,231 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 06:59:53,232 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 06:59:53,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2025-01-10 06:59:53,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,240 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2025-01-10 06:59:53,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2025-01-10 06:59:53,243 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 [2025-01-10 06:59:53,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 06:59:53,254 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 06:59:53,254 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 06:59:53,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 06:59:53,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 06:59:53,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 06:59:53,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 06:59:53,256 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 06:59:53,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2025-01-10 06:59:53,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,264 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2025-01-10 06:59:53,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2025-01-10 06:59:53,267 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 [2025-01-10 06:59:53,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 06:59:53,277 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 06:59:53,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 06:59:53,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 06:59:53,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 06:59:53,278 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 06:59:53,278 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 06:59:53,280 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 06:59:53,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2025-01-10 06:59:53,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,288 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2025-01-10 06:59:53,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2025-01-10 06:59:53,291 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 [2025-01-10 06:59:53,300 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 06:59:53,301 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 06:59:53,301 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 06:59:53,301 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 06:59:53,301 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 06:59:53,301 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 06:59:53,301 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 06:59:53,303 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2025-01-10 06:59:53,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2025-01-10 06:59:53,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,311 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2025-01-10 06:59:53,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2025-01-10 06:59:53,314 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 [2025-01-10 06:59:53,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2025-01-10 06:59:53,324 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2025-01-10 06:59:53,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2025-01-10 06:59:53,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2025-01-10 06:59:53,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2025-01-10 06:59:53,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2025-01-10 06:59:53,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2025-01-10 06:59:53,331 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2025-01-10 06:59:53,334 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2025-01-10 06:59:53,335 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2025-01-10 06:59:53,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-01-10 06:59:53,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 06:59:53,339 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2025-01-10 06:59:53,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2025-01-10 06:59:53,344 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2025-01-10 06:59:53,345 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2025-01-10 06:59:53,345 INFO L474 LassoAnalysis]: Proved termination. [2025-01-10 06:59:53,345 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [] [2025-01-10 06:59:53,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2025-01-10 06:59:53,353 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2025-01-10 06:59:53,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:59:53,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 06:59:53,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 06:59:53,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:59:53,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-10 06:59:53,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:59:53,402 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 06:59:53,411 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 06:59:53,411 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,411 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:59:53,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-10 06:59:53,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-10 06:59:53,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2025-01-10 06:59:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 06:59:53,508 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2025-01-10 06:59:53,509 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2025-01-10 06:59:53,636 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 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 63 states and 82 transitions. Complement of second has 28 states. [2025-01-10 06:59:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2025-01-10 06:59:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2025-01-10 06:59:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2025-01-10 06:59:53,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 3 letters. Loop has 6 letters. [2025-01-10 06:59:53,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 06:59:53,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 9 letters. Loop has 6 letters. [2025-01-10 06:59:53,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 06:59:53,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 3 letters. Loop has 12 letters. [2025-01-10 06:59:53,646 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2025-01-10 06:59:53,647 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 82 transitions. [2025-01-10 06:59:53,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-01-10 06:59:53,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 46 states and 60 transitions. [2025-01-10 06:59:53,659 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2025-01-10 06:59:53,659 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2025-01-10 06:59:53,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 60 transitions. [2025-01-10 06:59:53,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 06:59:53,661 INFO L218 hiAutomatonCegarLoop]: Abstraction has 46 states and 60 transitions. [2025-01-10 06:59:53,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states and 60 transitions. [2025-01-10 06:59:53,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2025-01-10 06:59:53,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 29 states have internal predecessors, (32), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2025-01-10 06:59:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2025-01-10 06:59:53,684 INFO L240 hiAutomatonCegarLoop]: Abstraction has 45 states and 57 transitions. [2025-01-10 06:59:53,684 INFO L432 stractBuchiCegarLoop]: Abstraction has 45 states and 57 transitions. [2025-01-10 06:59:53,684 INFO L338 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2025-01-10 06:59:53,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 57 transitions. [2025-01-10 06:59:53,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-01-10 06:59:53,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 06:59:53,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 06:59:53,687 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:59:53,687 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:59:53,687 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;havoc main_#t~nondet4#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "call main_#t~ret5#1 := g(main_~x~0#1);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret2 := f(~x - 1);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret0 := g(~x);"< "~x := #in~x;" "assume ~x <= 0;#res := 0;" "assume true;" >"#27#return;" [2025-01-10 06:59:53,687 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret1 := g(1 + ~x);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret2 := f(~x - 1);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret0 := g(~x);"< "~x := #in~x;" "assume ~x <= 0;#res := 0;" "assume true;" >"#27#return;" [2025-01-10 06:59:53,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:59:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1510789928, now seen corresponding path program 1 times [2025-01-10 06:59:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:59:53,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031175855] [2025-01-10 06:59:53,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:59:53,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:59:53,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-10 06:59:53,700 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-10 06:59:53,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:59:53,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:59:53,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:59:53,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031175855] [2025-01-10 06:59:53,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031175855] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:59:53,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:59:53,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:59:53,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873144621] [2025-01-10 06:59:53,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:59:53,775 INFO L757 eck$LassoCheckResult]: stem already infeasible [2025-01-10 06:59:53,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:59:53,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1553130012, now seen corresponding path program 1 times [2025-01-10 06:59:53,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:59:53,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155710292] [2025-01-10 06:59:53,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:59:53,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:59:53,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-01-10 06:59:53,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-01-10 06:59:53,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 06:59:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-10 06:59:53,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 06:59:53,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155710292] [2025-01-10 06:59:53,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155710292] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 06:59:53,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 06:59:53,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-10 06:59:53,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486873714] [2025-01-10 06:59:53,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 06:59:53,834 INFO L769 eck$LassoCheckResult]: loop already infeasible [2025-01-10 06:59:53,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 06:59:53,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-10 06:59:53,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-10 06:59:53,836 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. cyclomatic complexity: 14 Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-01-10 06:59:53,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-10 06:59:53,875 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2025-01-10 06:59:53,875 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 60 transitions. [2025-01-10 06:59:53,877 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-01-10 06:59:53,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 45 states and 56 transitions. [2025-01-10 06:59:53,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2025-01-10 06:59:53,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2025-01-10 06:59:53,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2025-01-10 06:59:53,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2025-01-10 06:59:53,878 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 56 transitions. [2025-01-10 06:59:53,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2025-01-10 06:59:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2025-01-10 06:59:53,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 29 states have internal predecessors, (30), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2025-01-10 06:59:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2025-01-10 06:59:53,881 INFO L240 hiAutomatonCegarLoop]: Abstraction has 45 states and 56 transitions. [2025-01-10 06:59:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 06:59:53,882 INFO L432 stractBuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2025-01-10 06:59:53,882 INFO L338 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2025-01-10 06:59:53,882 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 56 transitions. [2025-01-10 06:59:53,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2025-01-10 06:59:53,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-01-10 06:59:53,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2025-01-10 06:59:53,883 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:59:53,883 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 06:59:53,884 INFO L752 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~ret5#1, main_~x~0#1;havoc main_#t~nondet4#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;" "call main_#t~ret5#1 := g(main_~x~0#1);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret2 := f(~x - 1);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret0 := g(~x);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret2 := f(~x - 1);"< "~x := #in~x;" "assume ~x <= 0;#res := 0;" "assume true;" >"#31#return;" "call #t~ret3 := f(~x - 2);"< "~x := #in~x;" "assume ~x <= 0;#res := 0;" "assume true;" >"#33#return;" "#res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3;" "assume true;" >"#27#return;" [2025-01-10 06:59:53,884 INFO L754 eck$LassoCheckResult]: Loop: "call #t~ret1 := g(1 + ~x);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret2 := f(~x - 1);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret0 := g(~x);"< "~x := #in~x;" "assume !(~x <= 0);" "call #t~ret2 := f(~x - 1);"< "~x := #in~x;" "assume ~x <= 0;#res := 0;" "assume true;" >"#31#return;" "call #t~ret3 := f(~x - 2);"< "~x := #in~x;" "assume ~x <= 0;#res := 0;" "assume true;" >"#33#return;" "#res := #t~ret2 + #t~ret3;havoc #t~ret2;havoc #t~ret3;" "assume true;" >"#27#return;" [2025-01-10 06:59:53,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:59:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1263731607, now seen corresponding path program 1 times [2025-01-10 06:59:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:59:53,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004878983] [2025-01-10 06:59:53,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:59:53,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:59:53,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 06:59:53,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 06:59:53,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:53,894 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:59:53,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 06:59:53,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 06:59:53,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:53,910 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:59:53,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:59:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1714809691, now seen corresponding path program 1 times [2025-01-10 06:59:53,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:59:53,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605862127] [2025-01-10 06:59:53,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:59:53,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:59:53,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:59:53,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:59:53,928 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:53,928 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:59:53,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-10 06:59:53,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-10 06:59:53,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:53,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:59:53,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 06:59:53,935 INFO L85 PathProgramCache]: Analyzing trace with hash 790919793, now seen corresponding path program 1 times [2025-01-10 06:59:53,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 06:59:53,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336397529] [2025-01-10 06:59:53,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 06:59:53,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 06:59:53,940 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-10 06:59:53,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-10 06:59:53,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:53,953 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:59:53,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-10 06:59:53,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-10 06:59:53,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:53,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:53,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 06:59:54,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 06:59:54,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 06:59:54,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:54,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:54,495 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 06:59:54,499 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-10 06:59:54,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-10 06:59:54,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 06:59:54,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 06:59:54,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.01 06:59:54 BoogieIcfgContainer [2025-01-10 06:59:54,529 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2025-01-10 06:59:54,530 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-10 06:59:54,530 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-10 06:59:54,530 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-10 06:59:54,530 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:59:52" (3/4) ... [2025-01-10 06:59:54,532 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2025-01-10 06:59:54,565 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-10 06:59:54,565 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-10 06:59:54,568 INFO L158 Benchmark]: Toolchain (without parser) took 2421.84ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 105.0MB in the end (delta: 6.9MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2025-01-10 06:59:54,568 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 130.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:59:54,568 INFO L158 Benchmark]: CACSL2BoogieTranslator took 135.99ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 102.2MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:59:54,568 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.61ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 101.3MB in the end (delta: 861.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:59:54,569 INFO L158 Benchmark]: Boogie Preprocessor took 17.41ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 100.5MB in the end (delta: 869.9kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:59:54,569 INFO L158 Benchmark]: RCFGBuilder took 196.30ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 89.9MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:59:54,569 INFO L158 Benchmark]: BuchiAutomizer took 2011.16ms. Allocated memory is still 142.6MB. Free memory was 89.9MB in the beginning and 108.3MB in the end (delta: -18.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-10 06:59:54,569 INFO L158 Benchmark]: Witness Printer took 35.99ms. Allocated memory is still 142.6MB. Free memory was 108.3MB in the beginning and 105.0MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-10 06:59:54,571 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 130.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 135.99ms. Allocated memory is still 142.6MB. Free memory was 111.8MB in the beginning and 102.2MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.61ms. Allocated memory is still 142.6MB. Free memory was 102.2MB in the beginning and 101.3MB in the end (delta: 861.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.41ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 100.5MB in the end (delta: 869.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 196.30ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 89.9MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2011.16ms. Allocated memory is still 142.6MB. Free memory was 89.9MB in the beginning and 108.3MB in the end (delta: -18.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 35.99ms. Allocated memory is still 142.6MB. Free memory was 108.3MB in the beginning and 105.0MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. 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) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 8 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 45 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 3 iterations. TraceHistogramMax:3. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 29 mSDtfsCounter, 83 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 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: 21ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 14]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L25] int x = __VERIFIER_nondet_int(); [L26] CALL g(x) VAL [\old(x)=2] [L19] COND FALSE !(x <= 0) VAL [\old(x)=2, x=2] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=1] [L13] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L14] CALL g(x) VAL [\old(x)=1] [L19] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=0] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=0, \result=0] [L20] RET, EXPR f(x - 1) VAL [\old(x)=1, x=1] [L20] CALL, EXPR f(x - 2) VAL [\old(x)=-1] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=-1, \result=0] [L20] RET, EXPR f(x - 2) VAL [\old(x)=1, x=1] [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) VAL [\old(x)=1, x=1] Loop: [L14] CALL g(x + 1) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND FALSE !(x <= 0) [L14] CALL g(x) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 1) [L20] CALL, EXPR f(x - 2) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 2) [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L25] int x = __VERIFIER_nondet_int(); [L26] CALL g(x) VAL [\old(x)=2] [L19] COND FALSE !(x <= 0) VAL [\old(x)=2, x=2] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=1] [L13] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L14] CALL g(x) VAL [\old(x)=1] [L19] COND FALSE !(x <= 0) VAL [\old(x)=1, x=1] [L20] CALL, EXPR f(x - 1) VAL [\old(x)=0] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=0, \result=0] [L20] RET, EXPR f(x - 1) VAL [\old(x)=1, x=1] [L20] CALL, EXPR f(x - 2) VAL [\old(x)=-1] [L13] COND TRUE x <= 0 [L13] return 0; VAL [\old(x)=-1, \result=0] [L20] RET, EXPR f(x - 2) VAL [\old(x)=1, x=1] [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) VAL [\old(x)=1, x=1] Loop: [L14] CALL g(x + 1) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND FALSE !(x <= 0) [L14] CALL g(x) [L19] COND FALSE !(x <= 0) [L20] CALL, EXPR f(x - 1) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 1) [L20] CALL, EXPR f(x - 2) [L13] COND TRUE x <= 0 [L13] return 0; [L20] RET, EXPR f(x - 2) [L20] return f(x - 1) + f(x - 2); [L14] RET g(x) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2025-01-10 06:59:54,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)