./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:12:05,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:12:05,524 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-12 00:12:05,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:12:05,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:12:05,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:12:05,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:12:05,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:12:05,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:12:05,568 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:12:05,570 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:12:05,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:12:05,587 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:12:05,587 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-12 00:12:05,587 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-12 00:12:05,588 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-12 00:12:05,588 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-12 00:12:05,588 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-12 00:12:05,588 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-12 00:12:05,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:12:05,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-12 00:12:05,594 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:12:05,594 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:12:05,595 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-12 00:12:05,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-12 00:12:05,595 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-12 00:12:05,596 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:12:05,596 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:12:05,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:12:05,596 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-12 00:12:05,597 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:12:05,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:12:05,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:12:05,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:12:05,599 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:12:05,599 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-12 00:12:05,599 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 422ea435de955cc6e58e578076c5ef733a2456157ad413df035d109cb231427a [2024-10-12 00:12:05,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:12:05,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:12:05,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:12:05,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:12:05,948 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:12:05,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2024-10-12 00:12:07,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:12:07,644 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:12:07,645 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2024-10-12 00:12:07,652 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8e242e3a8/e2f9e82910a7492eaf28396af411fac3/FLAG555857a0e [2024-10-12 00:12:07,666 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8e242e3a8/e2f9e82910a7492eaf28396af411fac3 [2024-10-12 00:12:07,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:12:07,669 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:12:07,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:12:07,674 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:12:07,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:12:07,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733f200d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07, skipping insertion in model container [2024-10-12 00:12:07,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,699 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:12:07,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:12:07,864 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:12:07,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:12:07,891 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:12:07,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07 WrapperNode [2024-10-12 00:12:07,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:12:07,892 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:12:07,892 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:12:07,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:12:07,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,917 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 10 [2024-10-12 00:12:07,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:12:07,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:12:07,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:12:07,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:12:07,928 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,930 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,936 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-12 00:12:07,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,936 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,940 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,941 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:12:07,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:12:07,942 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:12:07,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:12:07,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (1/1) ... [2024-10-12 00:12:07,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:07,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:07,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:07,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-12 00:12:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure g [2024-10-12 00:12:08,029 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2024-10-12 00:12:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:12:08,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:12:08,077 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:12:08,079 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:12:08,218 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-12 00:12:08,219 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:12:08,235 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:12:08,235 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 00:12:08,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:12:08 BoogieIcfgContainer [2024-10-12 00:12:08,236 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:12:08,236 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-12 00:12:08,237 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-12 00:12:08,240 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-12 00:12:08,240 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:12:08,241 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.10 12:12:07" (1/3) ... [2024-10-12 00:12:08,242 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5873ad79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:12:08, skipping insertion in model container [2024-10-12 00:12:08,242 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:12:08,242 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:12:07" (2/3) ... [2024-10-12 00:12:08,242 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5873ad79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:12:08, skipping insertion in model container [2024-10-12 00:12:08,242 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:12:08,242 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:12:08" (3/3) ... [2024-10-12 00:12:08,244 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2024-10-12 00:12:08,301 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-12 00:12:08,302 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-12 00:12:08,302 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-12 00:12:08,303 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-12 00:12:08,303 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-12 00:12:08,303 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-12 00:12:08,303 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-12 00:12:08,303 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-12 00:12:08,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 00:12:08,334 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-12 00:12:08,334 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:08,334 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:08,341 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-12 00:12:08,341 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:12:08,341 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-12 00:12:08,342 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 00:12:08,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-12 00:12:08,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:08,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:08,344 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-12 00:12:08,344 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:12:08,352 INFO L745 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 11#L20true assume !(main_~x~0#1 < 0); 9#L21true call main_#t~ret3#1 := g(main_~x~0#1);< 12#$Ultimate##0true [2024-10-12 00:12:08,353 INFO L747 eck$LassoCheckResult]: Loop: 12#$Ultimate##0true ~x := #in~x; 6#L12true assume !(0 == ~x); 4#L15true call #t~ret0 := g(~x - 1);< 12#$Ultimate##0true [2024-10-12 00:12:08,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:08,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1202733, now seen corresponding path program 1 times [2024-10-12 00:12:08,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:08,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174029629] [2024-10-12 00:12:08,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:08,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:08,478 INFO L85 PathProgramCache]: Analyzing trace with hash 29937, now seen corresponding path program 1 times [2024-10-12 00:12:08,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:08,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879840983] [2024-10-12 00:12:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:08,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1470880581, now seen corresponding path program 1 times [2024-10-12 00:12:08,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:08,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859963396] [2024-10-12 00:12:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:08,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:08,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:08,606 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:08,607 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:08,607 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:08,607 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:08,607 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:08,607 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:08,608 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:08,608 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:08,608 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2024-10-12 00:12:08,608 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:08,608 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:08,622 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:08,632 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:08,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:08,639 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:08,642 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:08,713 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:08,714 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:08,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:08,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:08,720 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:08,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-12 00:12:08,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:08,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:08,742 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:08,742 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:08,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-12 00:12:08,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:08,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:08,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:08,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-12 00:12:08,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:08,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:08,775 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:08,775 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:08,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:08,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:08,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:08,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:08,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-12 00:12:08,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:08,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:08,814 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:08,814 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:08,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-12 00:12:08,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:08,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:08,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:08,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-12 00:12:08,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:08,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:08,845 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:08,845 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:08,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-12 00:12:08,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:08,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:08,865 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:08,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-12 00:12:08,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:08,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:08,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:08,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:08,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:08,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:08,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-12 00:12:08,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:08,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:08,939 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:08,939 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-8} Honda state: {g_#in~x=-8} Generalized eigenvectors: [{g_#in~x=0}, {g_#in~x=-1}, {g_#in~x=0}] Lambdas: [6, 1, 13] Nus: [0, 1] [2024-10-12 00:12:08,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-12 00:12:08,997 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:08,997 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:08,997 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:08,997 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:08,997 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:08,997 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:08,997 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:08,997 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:08,998 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2024-10-12 00:12:08,998 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:08,998 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:09,002 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,014 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,023 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,046 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,056 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,059 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,134 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:09,134 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:09,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,136 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-12 00:12:09,139 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:09,139 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:09,151 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:09,151 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:09,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-12 00:12:09,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-12 00:12:09,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:09,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:09,180 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:09,180 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:09,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-12 00:12:09,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,192 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-12 00:12:09,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:09,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:09,208 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:09,209 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:09,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:09,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-12 00:12:09,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:09,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:09,238 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:09,238 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~ret3#1=0} Honda state: {ULTIMATE.start_main_#t~ret3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:09,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-12 00:12:09,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-12 00:12:09,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:09,255 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:09,267 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:09,268 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res#1=0} Honda state: {ULTIMATE.start_main_#res#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:09,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-12 00:12:09,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,281 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-12 00:12:09,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:09,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:09,296 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:09,296 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:09,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:09,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,310 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-12 00:12:09,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:09,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:09,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:09,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,344 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-12 00:12:09,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:09,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:09,397 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:12:09,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-12 00:12:09,404 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:09,404 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:09,404 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:09,404 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:09,405 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:12:09,405 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,405 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:09,405 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:09,405 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2024-10-12 00:12:09,405 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:09,405 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:09,406 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,412 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,416 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,420 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,429 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,432 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,436 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,441 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,454 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:09,521 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:09,526 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:12:09,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,530 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-12 00:12:09,535 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:09,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:09,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:09,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:09,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:09,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:09,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:09,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:09,553 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:09,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:09,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,569 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-12 00:12:09,573 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:09,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:09,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:09,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:09,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:09,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:09,586 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:09,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:09,588 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:09,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:09,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,605 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-12 00:12:09,607 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:09,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:09,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:09,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:09,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:09,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:09,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:09,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:09,621 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:09,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-12 00:12:09,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,635 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-12 00:12:09,638 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:09,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:09,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:09,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:09,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:09,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:09,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:09,650 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:09,651 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:09,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:09,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,667 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-12 00:12:09,670 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:09,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:09,685 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:09,685 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:09,685 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:09,685 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:09,686 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:09,686 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:09,688 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:09,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:09,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,702 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-12 00:12:09,704 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:09,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:09,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:09,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:09,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:09,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:09,715 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:09,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:09,717 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:09,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-10-12 00:12:09,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,732 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-12 00:12:09,735 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:09,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:09,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:09,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:09,746 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:09,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:09,746 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:09,746 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:09,748 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:09,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-10-12 00:12:09,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,762 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-12 00:12:09,763 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:09,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:09,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:09,774 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2024-10-12 00:12:09,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:09,791 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2024-10-12 00:12:09,791 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2024-10-12 00:12:09,813 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:12:09,847 INFO L443 ModelExtractionUtils]: Simplification made 12 calls to the SMT solver. [2024-10-12 00:12:09,848 INFO L444 ModelExtractionUtils]: 2 out of 11 variables were initially zero. Simplification set additionally 6 variables to zero. [2024-10-12 00:12:09,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:09,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:09,874 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:09,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-12 00:12:09,876 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:12:09,891 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2024-10-12 00:12:09,891 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:12:09,892 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2024-10-12 00:12:09,907 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-10-12 00:12:09,914 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2024-10-12 00:12:09,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:09,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:12:09,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:10,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:12:10,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:10,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:10,139 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-12 00:12:10,141 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:12:10,280 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 43 transitions. Complement of second has 17 states. [2024-10-12 00:12:10,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 00:12:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:12:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 12 transitions. [2024-10-12 00:12:10,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2024-10-12 00:12:10,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:10,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2024-10-12 00:12:10,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:10,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2024-10-12 00:12:10,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:10,292 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 43 transitions. [2024-10-12 00:12:10,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-12 00:12:10,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 20 states and 26 transitions. [2024-10-12 00:12:10,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2024-10-12 00:12:10,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2024-10-12 00:12:10,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 26 transitions. [2024-10-12 00:12:10,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:10,303 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-12 00:12:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 26 transitions. [2024-10-12 00:12:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2024-10-12 00:12:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 00:12:10,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-12 00:12:10,331 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-12 00:12:10,331 INFO L425 stractBuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-12 00:12:10,332 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-12 00:12:10,332 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2024-10-12 00:12:10,332 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-12 00:12:10,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:10,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:10,334 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:10,334 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:10,334 INFO L745 eck$LassoCheckResult]: Stem: 132#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 133#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 134#L20 assume !(main_~x~0#1 < 0); 129#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 131#$Ultimate##0 ~x := #in~x; 135#L12 assume !(0 == ~x); 124#L15 call #t~ret0 := g(~x - 1);< 130#$Ultimate##0 ~x := #in~x; 136#L12 assume 0 == ~x;#res := 1; 123#gFINAL assume true; 125#gEXIT >#23#return; 127#L15-1 [2024-10-12 00:12:10,334 INFO L747 eck$LassoCheckResult]: Loop: 127#L15-1 call #t~ret1 := g(1 + #t~ret0);< 128#$Ultimate##0 ~x := #in~x; 139#L12 assume !(0 == ~x); 126#L15 call #t~ret0 := g(~x - 1);< 128#$Ultimate##0 ~x := #in~x; 139#L12 assume 0 == ~x;#res := 1; 138#gFINAL assume true; 140#gEXIT >#23#return; 127#L15-1 [2024-10-12 00:12:10,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:10,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 1 times [2024-10-12 00:12:10,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:10,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645015264] [2024-10-12 00:12:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:10,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:10,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:10,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:10,352 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:10,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:10,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1500125133, now seen corresponding path program 1 times [2024-10-12 00:12:10,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:10,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069986420] [2024-10-12 00:12:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:10,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:10,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:10,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:10,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:10,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:10,382 INFO L85 PathProgramCache]: Analyzing trace with hash 122773219, now seen corresponding path program 1 times [2024-10-12 00:12:10,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:10,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838667370] [2024-10-12 00:12:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:10,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:10,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:10,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 00:12:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:10,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 00:12:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 00:12:10,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:12:10,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838667370] [2024-10-12 00:12:10,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838667370] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:12:10,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578670785] [2024-10-12 00:12:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:10,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:12:10,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:10,704 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:12:10,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-12 00:12:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:10,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 00:12:10,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 00:12:10,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:12:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 00:12:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578670785] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:12:10,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:12:10,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-10-12 00:12:10,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557847057] [2024-10-12 00:12:10,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:12:11,070 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:11,071 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:11,071 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:11,071 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:11,071 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:11,072 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,075 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:11,075 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:11,075 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2024-10-12 00:12:11,075 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:11,075 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:11,076 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,083 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,086 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,090 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,095 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,140 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:11,140 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:11,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,142 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-12 00:12:11,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:11,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,163 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:11,163 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=1} Honda state: {g_#in~x=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:11,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-10-12 00:12:11,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,181 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-12 00:12:11,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:11,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,195 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:11,195 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:11,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-10-12 00:12:11,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,209 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-12 00:12:11,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:11,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,224 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:11,225 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=1} Honda state: {g_~x=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:11,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-10-12 00:12:11,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,237 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-12 00:12:11,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:11,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-10-12 00:12:11,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,262 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-12 00:12:11,266 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:11,266 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:11,280 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:12:11,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-10-12 00:12:11,296 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:11,296 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:11,296 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:11,296 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:11,296 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:12:11,296 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,296 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:11,296 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:11,296 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2024-10-12 00:12:11,296 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:11,296 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:11,298 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,304 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,306 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,309 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,311 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:11,354 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:11,354 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:12:11,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,357 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-12 00:12:11,360 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:11,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:11,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:11,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:11,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:11,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:11,374 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:11,374 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:11,377 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:11,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-10-12 00:12:11,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,395 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-12 00:12:11,397 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:11,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:11,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:11,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:11,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:11,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:11,411 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:11,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:11,415 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:11,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:11,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,433 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-10-12 00:12:11,435 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:11,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:11,448 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:11,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:11,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:11,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:11,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:11,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:11,451 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:11,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2024-10-12 00:12:11,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,469 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-10-12 00:12:11,471 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:11,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:11,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:11,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:11,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:11,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:11,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:11,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:11,487 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:12:11,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2024-10-12 00:12:11,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,499 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-10-12 00:12:11,501 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:12:11,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:12:11,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:12:11,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:12:11,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:12:11,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:12:11,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:12:11,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:12:11,516 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:12:11,518 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:12:11,518 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:12:11,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:11,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:11,521 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:11,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-10-12 00:12:11,524 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:12:11,524 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:12:11,524 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:12:11,524 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2024-10-12 00:12:11,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:11,543 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:12:11,548 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #t~ret0 [2024-10-12 00:12:11,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:11,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:12:11,580 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:11,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-12 00:12:11,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:12:11,753 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-10-12 00:12:11,753 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6 Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 00:12:12,015 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 6. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 83 states and 121 transitions. Complement of second has 31 states. [2024-10-12 00:12:12,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-10-12 00:12:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 00:12:12,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 37 transitions. [2024-10-12 00:12:12,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 8 letters. [2024-10-12 00:12:12,021 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:12,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 19 letters. Loop has 8 letters. [2024-10-12 00:12:12,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:12,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 11 letters. Loop has 16 letters. [2024-10-12 00:12:12,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:12:12,022 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 83 states and 121 transitions. [2024-10-12 00:12:12,030 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2024-10-12 00:12:12,034 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 83 states to 59 states and 82 transitions. [2024-10-12 00:12:12,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2024-10-12 00:12:12,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2024-10-12 00:12:12,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 82 transitions. [2024-10-12 00:12:12,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:12,036 INFO L218 hiAutomatonCegarLoop]: Abstraction has 59 states and 82 transitions. [2024-10-12 00:12:12,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 82 transitions. [2024-10-12 00:12:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2024-10-12 00:12:12,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 33 states have internal predecessors, (36), 15 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2024-10-12 00:12:12,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 72 transitions. [2024-10-12 00:12:12,044 INFO L240 hiAutomatonCegarLoop]: Abstraction has 53 states and 72 transitions. [2024-10-12 00:12:12,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:12:12,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 00:12:12,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-10-12 00:12:12,048 INFO L87 Difference]: Start difference. First operand 53 states and 72 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 00:12:12,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:12:12,141 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-10-12 00:12:12,141 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2024-10-12 00:12:12,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-12 00:12:12,143 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 31 states and 35 transitions. [2024-10-12 00:12:12,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2024-10-12 00:12:12,143 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2024-10-12 00:12:12,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 35 transitions. [2024-10-12 00:12:12,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:12,144 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-10-12 00:12:12,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 35 transitions. [2024-10-12 00:12:12,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2024-10-12 00:12:12,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 7 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 00:12:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-10-12 00:12:12,149 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-10-12 00:12:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-12 00:12:12,151 INFO L425 stractBuchiCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-10-12 00:12:12,152 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-12 00:12:12,152 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 28 transitions. [2024-10-12 00:12:12,152 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-12 00:12:12,152 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:12,152 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:12,153 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:12,153 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:12:12,153 INFO L745 eck$LassoCheckResult]: Stem: 581#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 582#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 583#L20 assume !(main_~x~0#1 < 0); 577#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 580#$Ultimate##0 ~x := #in~x; 586#L12 assume !(0 == ~x); 576#L15 call #t~ret0 := g(~x - 1);< 578#$Ultimate##0 ~x := #in~x; 585#L12 assume 0 == ~x;#res := 1; 594#gFINAL assume true; 579#gEXIT >#23#return; 574#L15-1 call #t~ret1 := g(1 + #t~ret0);< 587#$Ultimate##0 ~x := #in~x; 592#L12 assume !(0 == ~x); 573#L15 call #t~ret0 := g(~x - 1);< 575#$Ultimate##0 ~x := #in~x; 584#L12 assume !(0 == ~x); 570#L15 [2024-10-12 00:12:12,153 INFO L747 eck$LassoCheckResult]: Loop: 570#L15 call #t~ret0 := g(~x - 1);< 589#$Ultimate##0 ~x := #in~x; 588#L12 assume !(0 == ~x); 570#L15 [2024-10-12 00:12:12,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:12,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1443446059, now seen corresponding path program 2 times [2024-10-12 00:12:12,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:12,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060728322] [2024-10-12 00:12:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:12,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,166 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:12,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash 50937, now seen corresponding path program 2 times [2024-10-12 00:12:12,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:12,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811187746] [2024-10-12 00:12:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:12,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,187 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:12,192 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:12,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:12,192 INFO L85 PathProgramCache]: Analyzing trace with hash -488954971, now seen corresponding path program 3 times [2024-10-12 00:12:12,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:12,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992519580] [2024-10-12 00:12:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:12,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:12,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:12,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 00:12:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:12:12,381 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:12:12,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:12:12,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992519580] [2024-10-12 00:12:12,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992519580] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:12:12,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674015605] [2024-10-12 00:12:12,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 00:12:12,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:12:12,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:12,384 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:12:12,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-12 00:12:12,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-10-12 00:12:12,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:12:12,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 00:12:12,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:12:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:12:12,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:12:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:12:12,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674015605] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:12:12,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:12:12,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-10-12 00:12:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822227629] [2024-10-12 00:12:12,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:12:12,548 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:12:12,548 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:12:12,548 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:12:12,549 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:12:12,549 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:12:12,549 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:12,549 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:12:12,549 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:12:12,549 INFO L132 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2024-10-12 00:12:12,549 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:12:12,549 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:12:12,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:12,558 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:12,560 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:12,563 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:12:12,607 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:12:12,607 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:12:12,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:12,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:12,609 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:12,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-10-12 00:12:12,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:12,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:12,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:12,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:12,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:12,652 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:12,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-10-12 00:12:12,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:12:12,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:12,868 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:12,868 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=4, g_~x=-2} Honda state: {g_#in~x=4, g_~x=-2} Generalized eigenvectors: [{g_#in~x=-8, g_~x=0}, {g_#in~x=2, g_~x=0}, {g_#in~x=-1, g_~x=-1}] Lambdas: [0, 0, 1] Nus: [0, 0] [2024-10-12 00:12:12,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2024-10-12 00:12:12,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:12,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:12,881 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:12,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-10-12 00:12:12,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:12,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:12,895 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:12,895 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:12,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:12,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:12,908 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:12,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-10-12 00:12:12,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:12,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:12,921 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:12,921 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:12,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2024-10-12 00:12:12,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:12:12,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:12:12,935 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:12:12,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-10-12 00:12:12,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:12:12,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:12:12,954 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:12:12,954 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:12:12,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:12,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:12:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-12 00:12:12,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-12 00:12:12,972 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. cyclomatic complexity: 4 Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 6 states have internal predecessors, (13), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 00:12:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:12:13,077 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-10-12 00:12:13,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 29 transitions. [2024-10-12 00:12:13,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-12 00:12:13,079 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 29 transitions. [2024-10-12 00:12:13,079 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2024-10-12 00:12:13,079 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2024-10-12 00:12:13,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 29 transitions. [2024-10-12 00:12:13,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:12:13,079 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-10-12 00:12:13,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 29 transitions. [2024-10-12 00:12:13,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2024-10-12 00:12:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 00:12:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2024-10-12 00:12:13,084 INFO L240 hiAutomatonCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-10-12 00:12:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 00:12:13,087 INFO L425 stractBuchiCegarLoop]: Abstraction has 22 states and 23 transitions. [2024-10-12 00:12:13,087 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-12 00:12:13,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 23 transitions. [2024-10-12 00:12:13,088 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2024-10-12 00:12:13,088 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:12:13,088 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:12:13,090 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:12:13,090 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2024-10-12 00:12:13,090 INFO L745 eck$LassoCheckResult]: Stem: 777#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 778#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1;havoc main_#t~nondet2#1;main_~x~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 779#L20 assume !(main_~x~0#1 < 0); 773#L21 call main_#t~ret3#1 := g(main_~x~0#1);< 776#$Ultimate##0 ~x := #in~x; 782#L12 assume !(0 == ~x); 772#L15 call #t~ret0 := g(~x - 1);< 774#$Ultimate##0 ~x := #in~x; 781#L12 assume 0 == ~x;#res := 1; 786#gFINAL assume true; 775#gEXIT >#23#return; 770#L15-1 [2024-10-12 00:12:13,090 INFO L747 eck$LassoCheckResult]: Loop: 770#L15-1 call #t~ret1 := g(1 + #t~ret0);< 784#$Ultimate##0 ~x := #in~x; 783#L12 assume !(0 == ~x); 769#L15 call #t~ret0 := g(~x - 1);< 771#$Ultimate##0 ~x := #in~x; 780#L12 assume !(0 == ~x); 767#L15 call #t~ret0 := g(~x - 1);< 785#$Ultimate##0 ~x := #in~x; 787#L12 assume 0 == ~x;#res := 1; 766#gFINAL assume true; 768#gEXIT >#23#return; 770#L15-1 [2024-10-12 00:12:13,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:13,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1676493545, now seen corresponding path program 2 times [2024-10-12 00:12:13,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:13,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903818505] [2024-10-12 00:12:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:13,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:13,097 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:13,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:13,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:13,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1133998729, now seen corresponding path program 2 times [2024-10-12 00:12:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:13,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911401756] [2024-10-12 00:12:13,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:13,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:13,106 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:13,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:13,110 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:13,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:12:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1734292557, now seen corresponding path program 4 times [2024-10-12 00:12:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:12:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344257453] [2024-10-12 00:12:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:12:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:12:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:13,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:13,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:12:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:13,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:12:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:12:13,425 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-12 00:12:13,429 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-12 00:12:13,432 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-12 00:12:13,434 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-12 00:12:13,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 12:12:13 BoogieIcfgContainer [2024-10-12 00:12:13,436 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-12 00:12:13,437 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 00:12:13,437 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 00:12:13,437 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 00:12:13,438 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:12:08" (3/4) ... [2024-10-12 00:12:13,439 INFO L136 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-12 00:12:13,441 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-12 00:12:13,442 WARN L953 BoogieBacktranslator]: Unfinished Backtranslation: The program execution was not completely translated back. [2024-10-12 00:12:13,481 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-12 00:12:13,481 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 00:12:13,482 INFO L158 Benchmark]: Toolchain (without parser) took 5812.67ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 123.4MB in the beginning and 127.5MB in the end (delta: -4.1MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2024-10-12 00:12:13,482 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:12:13,482 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.37ms. Allocated memory is still 184.5MB. Free memory was 123.2MB in the beginning and 112.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 00:12:13,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.07ms. Allocated memory is still 184.5MB. Free memory was 112.5MB in the beginning and 111.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:12:13,483 INFO L158 Benchmark]: Boogie Preprocessor took 23.42ms. Allocated memory is still 184.5MB. Free memory was 111.2MB in the beginning and 109.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:12:13,483 INFO L158 Benchmark]: RCFGBuilder took 293.57ms. Allocated memory is still 184.5MB. Free memory was 109.7MB in the beginning and 150.1MB in the end (delta: -40.4MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2024-10-12 00:12:13,483 INFO L158 Benchmark]: BuchiAutomizer took 5199.80ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 150.1MB in the beginning and 129.6MB in the end (delta: 20.5MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2024-10-12 00:12:13,483 INFO L158 Benchmark]: Witness Printer took 44.54ms. Allocated memory is still 222.3MB. Free memory was 128.6MB in the beginning and 127.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:12:13,485 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 125.8MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.37ms. Allocated memory is still 184.5MB. Free memory was 123.2MB in the beginning and 112.5MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.07ms. Allocated memory is still 184.5MB. Free memory was 112.5MB in the beginning and 111.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.42ms. Allocated memory is still 184.5MB. Free memory was 111.2MB in the beginning and 109.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.57ms. Allocated memory is still 184.5MB. Free memory was 109.7MB in the beginning and 150.1MB in the end (delta: -40.4MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * BuchiAutomizer took 5199.80ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 150.1MB in the beginning and 129.6MB in the end (delta: 20.5MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. * Witness Printer took 44.54ms. Allocated memory is still 222.3MB. Free memory was 128.6MB in the beginning and 127.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #t~ret0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 6 locations. One deterministic module has affine ranking function null and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 11 locations. The remainder module has 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 3.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 55 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 181 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 129 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 261 IncrementalHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 52 mSDtfsCounter, 261 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq190 hnf92 smp100 dnf133 smp100 tf106 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 130ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1] [L15] RET g(x - 1) VAL [\old(x)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) VAL [x=1] [L21] CALL g(x) VAL [\old(x)=1] [L12] COND FALSE !(x == 0) VAL [\old(x)=1, x=1] [L15] CALL g(x - 1) VAL [\old(x)=0] [L12] COND TRUE x == 0 [L13] return 1; VAL [\old(x)=0, \result=1] [L15] RET g(x - 1) VAL [\old(x)=1, x=1] Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-12 00:12:13,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-10-12 00:12:13,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-12 00:12:13,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/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)