./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 22:54:55,553 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 22:54:55,629 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-20 22:54:55,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 22:54:55,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 22:54:55,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 22:54:55,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 22:54:55,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 22:54:55,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 22:54:55,657 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 22:54:55,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 22:54:55,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 22:54:55,658 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 22:54:55,658 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-20 22:54:55,658 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-20 22:54:55,658 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-20 22:54:55,658 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-20 22:54:55,659 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-20 22:54:55,659 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-20 22:54:55,659 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 22:54:55,660 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-20 22:54:55,660 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 22:54:55,660 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 22:54:55,660 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 22:54:55,661 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 22:54:55,661 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-20 22:54:55,661 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-20 22:54:55,661 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-20 22:54:55,661 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 22:54:55,662 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 22:54:55,662 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 22:54:55,662 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 22:54:55,662 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-20 22:54:55,662 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 22:54:55,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 22:54:55,663 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 22:54:55,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 22:54:55,663 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 22:54:55,664 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-20 22:54:55,664 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2024-11-20 22:54:55,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 22:54:55,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 22:54:55,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 22:54:55,910 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 22:54:55,911 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 22:54:55,912 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2024-11-20 22:54:57,237 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 22:54:57,388 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 22:54:57,388 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2024-11-20 22:54:57,394 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366e8c06c/d76ec1944ee2485f8f423227a895f92f/FLAGec3ec2da8 [2024-11-20 22:54:57,406 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/366e8c06c/d76ec1944ee2485f8f423227a895f92f [2024-11-20 22:54:57,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 22:54:57,409 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 22:54:57,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 22:54:57,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 22:54:57,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 22:54:57,415 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f53776a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57, skipping insertion in model container [2024-11-20 22:54:57,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 22:54:57,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:54:57,643 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 22:54:57,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 22:54:57,674 INFO L204 MainTranslator]: Completed translation [2024-11-20 22:54:57,674 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57 WrapperNode [2024-11-20 22:54:57,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 22:54:57,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 22:54:57,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 22:54:57,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 22:54:57,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,703 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-20 22:54:57,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 22:54:57,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 22:54:57,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 22:54:57,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 22:54:57,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,713 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,721 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-20 22:54:57,722 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,722 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,731 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 22:54:57,733 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 22:54:57,733 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 22:54:57,733 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 22:54:57,734 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (1/1) ... [2024-11-20 22:54:57,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:57,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:57,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:57,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-20 22:54:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 22:54:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 22:54:57,806 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-20 22:54:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-20 22:54:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-20 22:54:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-20 22:54:57,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 22:54:57,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 22:54:57,857 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 22:54:57,859 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 22:54:57,950 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-20 22:54:57,950 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 22:54:57,960 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 22:54:57,960 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 22:54:57,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:57 BoogieIcfgContainer [2024-11-20 22:54:57,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 22:54:57,962 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-20 22:54:57,962 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-20 22:54:57,965 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-20 22:54:57,966 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:54:57,966 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:54:57" (1/3) ... [2024-11-20 22:54:57,967 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7938ef6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:54:57, skipping insertion in model container [2024-11-20 22:54:57,967 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:54:57,967 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:54:57" (2/3) ... [2024-11-20 22:54:57,967 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7938ef6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:54:57, skipping insertion in model container [2024-11-20 22:54:57,967 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-20 22:54:57,967 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:57" (3/3) ... [2024-11-20 22:54:57,969 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-2.c [2024-11-20 22:54:58,013 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-20 22:54:58,013 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-20 22:54:58,013 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-20 22:54:58,014 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-20 22:54:58,014 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-20 22:54:58,014 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-20 22:54:58,014 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-20 22:54:58,014 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-20 22:54:58,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 22:54:58,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-20 22:54:58,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:54:58,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:54:58,040 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-20 22:54:58,040 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:54:58,040 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-20 22:54:58,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 22:54:58,043 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-20 22:54:58,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:54:58,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:54:58,045 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-20 22:54:58,045 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:54:58,052 INFO L745 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2024-11-20 22:54:58,052 INFO L747 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2024-11-20 22:54:58,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:54:58,058 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2024-11-20 22:54:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:54:58,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093509088] [2024-11-20 22:54:58,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:54:58,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:54:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:54:58,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:54:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:54:58,198 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:54:58,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:54:58,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2024-11-20 22:54:58,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:54:58,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559824753] [2024-11-20 22:54:58,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:54:58,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:54:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:54:58,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:54:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:54:58,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:54:58,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:54:58,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2024-11-20 22:54:58,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:54:58,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475959215] [2024-11-20 22:54:58,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:54:58,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:54:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:54:58,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:54:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:54:58,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:54:58,544 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:54:58,545 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:54:58,545 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:54:58,545 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:54:58,545 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:54:58,545 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,545 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:54:58,545 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:54:58,545 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2024-11-20 22:54:58,546 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:54:58,546 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:54:58,559 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:58,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:58,572 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:58,575 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:58,578 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:58,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:58,586 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:58,589 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:58,682 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:54:58,683 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:54:58,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:58,689 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:58,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-20 22:54:58,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:54:58,693 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:54:58,713 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:54:58,713 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:54:58,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-20 22:54:58,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:58,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:58,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-20 22:54:58,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:54:58,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:54:58,748 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:54:58,748 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:54:58,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-20 22:54:58,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:58,756 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:58,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-20 22:54:58,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:54:58,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:54:58,772 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:54:58,772 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:54:58,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-20 22:54:58,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:58,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:58,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-20 22:54:58,785 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:54:58,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:54:58,797 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:54:58,797 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:54:58,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-20 22:54:58,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:58,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:58,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-20 22:54:58,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:54:58,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:54:58,822 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:54:58,822 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:54:58,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-20 22:54:58,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:58,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:58,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-20 22:54:58,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:54:58,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:54:58,847 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:54:58,847 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:54:58,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-20 22:54:58,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:58,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:58,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-20 22:54:58,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:54:58,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:54:58,880 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:54:58,880 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:54:58,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-20 22:54:58,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:58,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:58,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-20 22:54:58,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:54:58,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:54:58,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-20 22:54:58,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:58,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:58,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-20 22:54:58,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:54:58,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:54:58,979 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:54:58,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-20 22:54:58,990 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:54:58,990 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:54:58,990 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:54:58,990 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:54:58,991 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:54:58,991 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:58,991 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:54:58,991 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:54:58,991 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2024-11-20 22:54:58,991 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:54:58,991 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:54:58,993 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:59,000 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:59,006 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:59,011 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:59,013 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:59,016 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:59,025 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:59,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:54:59,083 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:54:59,088 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:54:59,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:59,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:59,091 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:59,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-20 22:54:59,094 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:54:59,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:54:59,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:54:59,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:54:59,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:54:59,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:54:59,108 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:54:59,108 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:54:59,112 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:54:59,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-20 22:54:59,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:59,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:59,122 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:59,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-20 22:54:59,128 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:54:59,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:54:59,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:54:59,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:54:59,139 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:54:59,139 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:54:59,139 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:54:59,139 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:54:59,141 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:54:59,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2024-11-20 22:54:59,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:59,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:59,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:59,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-20 22:54:59,151 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:54:59,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:54:59,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:54:59,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:54:59,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:54:59,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:54:59,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:54:59,162 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:54:59,166 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:54:59,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-20 22:54:59,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:59,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:59,178 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:59,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-20 22:54:59,184 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:54:59,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:54:59,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:54:59,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:54:59,195 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:54:59,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:54:59,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:54:59,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:54:59,199 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:54:59,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-11-20 22:54:59,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:59,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:59,213 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:59,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-20 22:54:59,215 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:54:59,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:54:59,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:54:59,227 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:54:59,227 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:54:59,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:54:59,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:54:59,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:54:59,230 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:54:59,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-20 22:54:59,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:59,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:59,240 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:59,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-20 22:54:59,246 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:54:59,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:54:59,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:54:59,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:54:59,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:54:59,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:54:59,259 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:54:59,259 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:54:59,262 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:54:59,270 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:54:59,271 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-20 22:54:59,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:54:59,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:54:59,293 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:54:59,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-20 22:54:59,296 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:54:59,296 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:54:59,296 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:54:59,297 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2024-11-20 22:54:59,302 ERROR L418 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Exception during sending of exit command (exit): Broken pipe [2024-11-20 22:54:59,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-20 22:54:59,310 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:54:59,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:54:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:54:59,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 22:54:59,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:54:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:54:59,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 22:54:59,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:54:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:54:59,488 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2024-11-20 22:54:59,490 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:54:59,644 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 107 transitions. Complement of second has 28 states. [2024-11-20 22:54:59,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-20 22:54:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 22:54:59,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2024-11-20 22:54:59,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-20 22:54:59,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:54:59,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2024-11-20 22:54:59,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:54:59,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 16 letters. [2024-11-20 22:54:59,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:54:59,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 107 transitions. [2024-11-20 22:54:59,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-20 22:54:59,667 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 55 states and 75 transitions. [2024-11-20 22:54:59,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2024-11-20 22:54:59,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2024-11-20 22:54:59,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 75 transitions. [2024-11-20 22:54:59,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:54:59,669 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 75 transitions. [2024-11-20 22:54:59,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 75 transitions. [2024-11-20 22:54:59,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-20 22:54:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-20 22:54:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-20 22:54:59,693 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-20 22:54:59,693 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-20 22:54:59,693 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-20 22:54:59,693 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2024-11-20 22:54:59,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-20 22:54:59,694 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:54:59,694 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:54:59,695 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:54:59,695 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:54:59,695 INFO L745 eck$LassoCheckResult]: Stem: 232#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 219#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 214#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 213#$Ultimate##0 ~n := #in~n; 215#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 208#L15 call #t~ret4 := fibo2(~n - 1);< 230#$Ultimate##0 ~n := #in~n; 235#L20 assume !(~n < 1); 236#L22 assume !(1 == ~n); 200#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#48#return; 207#L25-1 [2024-11-20 22:54:59,695 INFO L747 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret7 := fibo1(~n - 2);< 212#$Ultimate##0 ~n := #in~n; 237#L10 assume !(~n < 1); 238#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 241#$Ultimate##0 ~n := #in~n; 240#L20 assume !(~n < 1); 239#L22 assume !(1 == ~n); 220#L25 call #t~ret6 := fibo1(~n - 1);< 212#$Ultimate##0 ~n := #in~n; 237#L10 assume ~n < 1;#res := 0; 233#fibo1FINAL assume true; 234#fibo1EXIT >#48#return; 207#L25-1 [2024-11-20 22:54:59,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:54:59,696 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2024-11-20 22:54:59,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:54:59,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522364004] [2024-11-20 22:54:59,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:54:59,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:54:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:54:59,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 22:54:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:54:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:54:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:54:59,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522364004] [2024-11-20 22:54:59,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522364004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:54:59,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:54:59,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 22:54:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246926679] [2024-11-20 22:54:59,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:54:59,850 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:54:59,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:54:59,851 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2024-11-20 22:54:59,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:54:59,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316794404] [2024-11-20 22:54:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:54:59,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:54:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:54:59,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 22:54:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:54:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:54:59,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:54:59,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316794404] [2024-11-20 22:54:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316794404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 22:54:59,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 22:54:59,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 22:54:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511286278] [2024-11-20 22:54:59,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 22:54:59,915 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-20 22:54:59,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:54:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 22:54:59,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 22:54:59,919 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 22:54:59,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:54:59,993 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-11-20 22:54:59,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2024-11-20 22:54:59,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-20 22:54:59,996 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 60 states and 79 transitions. [2024-11-20 22:54:59,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-11-20 22:54:59,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2024-11-20 22:54:59,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 79 transitions. [2024-11-20 22:54:59,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:54:59,999 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-20 22:54:59,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 79 transitions. [2024-11-20 22:55:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-20 22:55:00,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 44 states have internal predecessors, (49), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-20 22:55:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-11-20 22:55:00,008 INFO L240 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-20 22:55:00,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 22:55:00,009 INFO L425 stractBuchiCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-20 22:55:00,009 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-20 22:55:00,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 79 transitions. [2024-11-20 22:55:00,010 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-20 22:55:00,010 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:00,010 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:00,010 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:00,011 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:00,011 INFO L745 eck$LassoCheckResult]: Stem: 370#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 352#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 353#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 354#$Ultimate##0 ~n := #in~n; 355#L10 assume !(~n < 1); 390#L12 assume !(1 == ~n); 346#L15 call #t~ret4 := fibo2(~n - 1);< 369#$Ultimate##0 ~n := #in~n; 376#L20 assume !(~n < 1); 377#L22 assume !(1 == ~n); 337#L25 call #t~ret6 := fibo1(~n - 1);< 356#$Ultimate##0 ~n := #in~n; 357#L10 assume !(~n < 1); 366#L12 assume 1 == ~n;#res := 1; 378#fibo1FINAL assume true; 374#fibo1EXIT >#48#return; 343#L25-1 [2024-11-20 22:55:00,011 INFO L747 eck$LassoCheckResult]: Loop: 343#L25-1 call #t~ret7 := fibo1(~n - 2);< 350#$Ultimate##0 ~n := #in~n; 379#L10 assume !(~n < 1); 360#L12 assume !(1 == ~n); 348#L15 call #t~ret4 := fibo2(~n - 1);< 383#$Ultimate##0 ~n := #in~n; 382#L20 assume !(~n < 1); 380#L22 assume !(1 == ~n); 344#L25 call #t~ret6 := fibo1(~n - 1);< 350#$Ultimate##0 ~n := #in~n; 379#L10 assume !(~n < 1); 360#L12 assume 1 == ~n;#res := 1; 361#fibo1FINAL assume true; 373#fibo1EXIT >#48#return; 343#L25-1 [2024-11-20 22:55:00,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:00,011 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2024-11-20 22:55:00,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:00,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377271953] [2024-11-20 22:55:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:00,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:00,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:00,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-20 22:55:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:00,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:00,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377271953] [2024-11-20 22:55:00,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377271953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:00,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586939999] [2024-11-20 22:55:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:00,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:00,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,147 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 22:55:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:00,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 22:55:00,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:00,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:00,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586939999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:00,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:00,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-11-20 22:55:00,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505533194] [2024-11-20 22:55:00,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:00,321 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:00,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:00,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2024-11-20 22:55:00,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:00,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612621845] [2024-11-20 22:55:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:00,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:00,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:00,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:00,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-20 22:55:00,523 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:00,523 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:00,523 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:00,523 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:00,523 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:55:00,523 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,523 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:00,523 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:00,523 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2024-11-20 22:55:00,523 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:00,523 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:00,524 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,528 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,530 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,532 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,533 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,540 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,542 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,591 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:00,591 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:55:00,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,593 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-20 22:55:00,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:00,596 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:00,608 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:00,609 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:00,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:00,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,616 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-20 22:55:00,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:00,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:00,632 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:00,632 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:00,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:00,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,641 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-20 22:55:00,643 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:00,643 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:00,656 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:00,657 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:00,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-20 22:55:00,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,665 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-20 22:55:00,672 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:00,672 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:00,683 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:00,683 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:00,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:00,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,694 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-20 22:55:00,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:00,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:00,711 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:00,711 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:00,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-20 22:55:00,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,720 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-20 22:55:00,722 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:00,722 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:00,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-11-20 22:55:00,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,740 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-20 22:55:00,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:55:00,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:00,755 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:55:00,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-11-20 22:55:00,761 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:00,761 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:00,761 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:00,761 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:00,761 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:55:00,761 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,761 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:00,761 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:00,761 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2024-11-20 22:55:00,761 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:00,761 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:00,762 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,764 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,766 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,767 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,768 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,771 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,774 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,775 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,776 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:00,819 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:00,820 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:55:00,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,822 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-20 22:55:00,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:00,838 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:00,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:00,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:00,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:00,839 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:00,839 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:00,839 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:00,841 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:00,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:00,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,849 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-20 22:55:00,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:00,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:00,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:00,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:00,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:00,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:00,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:00,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:00,865 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:00,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:00,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,874 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-20 22:55:00,876 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:00,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:00,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:00,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:00,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:00,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:00,887 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:00,887 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:00,889 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:00,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:00,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,897 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-20 22:55:00,900 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:00,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:00,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:00,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:00,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:00,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:00,910 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:00,910 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:00,912 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:00,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:00,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,943 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-20 22:55:00,945 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:00,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:00,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:00,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:00,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:00,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:00,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:00,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:00,960 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:55:00,964 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:55:00,964 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-20 22:55:00,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:00,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:00,966 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:00,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-20 22:55:00,968 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:55:00,968 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:55:00,968 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:55:00,968 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2024-11-20 22:55:00,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:00,974 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:55:00,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:01,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:01,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 22:55:01,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:01,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 22:55:01,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:01,214 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-20 22:55:01,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 22:55:01,594 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 206 states and 282 transitions. Complement of second has 48 states. [2024-11-20 22:55:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 22:55:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 79 transitions. [2024-11-20 22:55:01,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 14 letters. [2024-11-20 22:55:01,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:01,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 30 letters. Loop has 14 letters. [2024-11-20 22:55:01,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:01,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 28 letters. [2024-11-20 22:55:01,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:01,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 282 transitions. [2024-11-20 22:55:01,606 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-20 22:55:01,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 182 states and 254 transitions. [2024-11-20 22:55:01,613 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 112 [2024-11-20 22:55:01,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2024-11-20 22:55:01,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2024-11-20 22:55:01,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:01,614 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2024-11-20 22:55:01,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2024-11-20 22:55:01,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 154. [2024-11-20 22:55:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 96 states have (on average 1.28125) internal successors, (123), 104 states have internal predecessors, (123), 35 states have call successors, (36), 19 states have call predecessors, (36), 23 states have return successors, (52), 30 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-20 22:55:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2024-11-20 22:55:01,625 INFO L240 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2024-11-20 22:55:01,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:01,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 22:55:01,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-20 22:55:01,626 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 22:55:01,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:01,765 INFO L93 Difference]: Finished difference Result 183 states and 249 transitions. [2024-11-20 22:55:01,765 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 249 transitions. [2024-11-20 22:55:01,770 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-20 22:55:01,776 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 245 transitions. [2024-11-20 22:55:01,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2024-11-20 22:55:01,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2024-11-20 22:55:01,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 245 transitions. [2024-11-20 22:55:01,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:01,778 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 245 transitions. [2024-11-20 22:55:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 245 transitions. [2024-11-20 22:55:01,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2024-11-20 22:55:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 111 states have internal predecessors, (129), 38 states have call successors, (40), 20 states have call predecessors, (40), 25 states have return successors, (58), 33 states have call predecessors, (58), 36 states have call successors, (58) [2024-11-20 22:55:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 227 transitions. [2024-11-20 22:55:01,794 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 227 transitions. [2024-11-20 22:55:01,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 22:55:01,797 INFO L425 stractBuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2024-11-20 22:55:01,798 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-20 22:55:01,798 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 227 transitions. [2024-11-20 22:55:01,799 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-20 22:55:01,799 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:01,799 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:01,803 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:01,803 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:01,803 INFO L745 eck$LassoCheckResult]: Stem: 1277#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1252#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 1253#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1282#$Ultimate##0 ~n := #in~n; 1272#L10 assume !(~n < 1); 1269#L12 assume !(1 == ~n); 1243#L15 call #t~ret4 := fibo2(~n - 1);< 1275#$Ultimate##0 ~n := #in~n; 1376#L20 assume !(~n < 1); 1375#L22 assume !(1 == ~n); 1256#L25 call #t~ret6 := fibo1(~n - 1);< 1255#$Ultimate##0 ~n := #in~n; 1257#L10 assume !(~n < 1); 1318#L12 assume !(1 == ~n); 1319#L15 call #t~ret4 := fibo2(~n - 1);< 1327#$Ultimate##0 ~n := #in~n; 1331#L20 assume ~n < 1;#res := 0; 1330#fibo2FINAL assume true; 1326#fibo2EXIT >#52#return; 1323#L15-1 call #t~ret5 := fibo2(~n - 2);< 1324#$Ultimate##0 ~n := #in~n; 1328#L20 assume ~n < 1;#res := 0; 1325#fibo2FINAL assume true; 1322#fibo2EXIT >#54#return; 1320#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1321#fibo1FINAL assume true; 1378#fibo1EXIT >#48#return; 1273#L25-1 call #t~ret7 := fibo1(~n - 2);< 1310#$Ultimate##0 ~n := #in~n; 1382#L10 assume ~n < 1;#res := 0; 1381#fibo1FINAL assume true; 1372#fibo1EXIT >#50#return; 1259#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1260#fibo2FINAL assume true; 1270#fibo2EXIT >#52#return; 1220#L15-1 call #t~ret5 := fibo2(~n - 2);< 1334#$Ultimate##0 [2024-11-20 22:55:01,803 INFO L747 eck$LassoCheckResult]: Loop: 1334#$Ultimate##0 ~n := #in~n; 1333#L20 assume !(~n < 1); 1219#L22 assume !(1 == ~n); 1224#L25 call #t~ret6 := fibo1(~n - 1);< 1244#$Ultimate##0 ~n := #in~n; 1254#L10 assume !(~n < 1); 1267#L12 assume !(1 == ~n); 1222#L15 call #t~ret4 := fibo2(~n - 1);< 1334#$Ultimate##0 [2024-11-20 22:55:01,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:01,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1873386980, now seen corresponding path program 1 times [2024-11-20 22:55:01,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:01,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002079914] [2024-11-20 22:55:01,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:01,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:01,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 22:55:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:01,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:01,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:01,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 22:55:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:01,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-20 22:55:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 22:55:01,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:01,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002079914] [2024-11-20 22:55:01,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002079914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:01,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833271847] [2024-11-20 22:55:01,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:01,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:01,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:01,956 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:01,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-20 22:55:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:01,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 22:55:01,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 22:55:02,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:55:02,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833271847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:02,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:02,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 16 [2024-11-20 22:55:02,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534101873] [2024-11-20 22:55:02,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:02,348 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:02,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2024-11-20 22:55:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852882102] [2024-11-20 22:55:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:02,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:02,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:02,447 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:02,447 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:02,448 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:02,448 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:02,448 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:55:02,448 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,448 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:02,448 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:02,448 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2024-11-20 22:55:02,448 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:02,448 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:02,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,450 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,453 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,455 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,456 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,462 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,502 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:02,502 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:55:02,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,504 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-11-20 22:55:02,506 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:02,506 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:02,518 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:02,518 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:02,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2024-11-20 22:55:02,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,528 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-11-20 22:55:02,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:02,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:02,542 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:02,542 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:02,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2024-11-20 22:55:02,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,551 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-11-20 22:55:02,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:02,553 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:02,566 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:02,567 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:02,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,576 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-11-20 22:55:02,582 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:02,582 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:02,598 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:02,598 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:02,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,606 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-11-20 22:55:02,608 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:02,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:02,619 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:02,619 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:02,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,627 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-11-20 22:55:02,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:02,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:02,639 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:02,639 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:02,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,646 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-11-20 22:55:02,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:02,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:02,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,666 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-11-20 22:55:02,668 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:55:02,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:02,690 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:55:02,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,694 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:02,694 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:02,694 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:02,694 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:02,694 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:55:02,695 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,695 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:02,695 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:02,695 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2024-11-20 22:55:02,695 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:02,695 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:02,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,697 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,701 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,703 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,704 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,706 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,711 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:02,743 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:02,743 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:55:02,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,746 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-11-20 22:55:02,748 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:02,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:02,758 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:02,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:02,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:02,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:02,759 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:02,759 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:02,761 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:02,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,769 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,773 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:02,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-11-20 22:55:02,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:02,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:02,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:02,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:02,784 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:02,784 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:02,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:02,785 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:02,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,792 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-11-20 22:55:02,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:02,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:02,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:02,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:02,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:02,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:02,804 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:02,804 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:02,805 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:02,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,813 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-11-20 22:55:02,815 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:02,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:02,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:02,825 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:02,825 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:02,825 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:02,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:02,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:02,827 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:02,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:02,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,835 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-11-20 22:55:02,837 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:02,847 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:02,847 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:02,847 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:02,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:02,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:02,848 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:02,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:02,849 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:02,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2024-11-20 22:55:02,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,855 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2024-11-20 22:55:02,858 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:02,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:02,868 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:02,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:02,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:02,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:02,868 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:02,868 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:02,869 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:02,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2024-11-20 22:55:02,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,877 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2024-11-20 22:55:02,878 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:02,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:02,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:02,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:02,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:02,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:02,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:02,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:02,891 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:55:02,893 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:55:02,893 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-20 22:55:02,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:02,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:02,896 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:02,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2024-11-20 22:55:02,898 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:55:02,898 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:55:02,898 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:55:02,898 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2024-11-20 22:55:02,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2024-11-20 22:55:02,905 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:55:02,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:02,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 22:55:02,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:03,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:03,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 22:55:03,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:03,273 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2024-11-20 22:55:03,273 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 22:55:03,419 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 658 states and 934 transitions. Complement of second has 30 states. [2024-11-20 22:55:03,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:03,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 22:55:03,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2024-11-20 22:55:03,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 36 letters. Loop has 8 letters. [2024-11-20 22:55:03,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:03,422 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:55:03,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:03,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 22:55:03,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:03,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 22:55:03,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:03,749 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2024-11-20 22:55:03,749 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 22:55:03,890 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 658 states and 934 transitions. Complement of second has 30 states. [2024-11-20 22:55:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 22:55:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2024-11-20 22:55:03,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 36 letters. Loop has 8 letters. [2024-11-20 22:55:03,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:03,893 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:55:03,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:03,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 22:55:03,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:04,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 22:55:04,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:04,240 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2024-11-20 22:55:04,240 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 22:55:04,400 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 538 states and 752 transitions. Complement of second has 29 states. [2024-11-20 22:55:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 22:55:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2024-11-20 22:55:04,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 36 letters. Loop has 8 letters. [2024-11-20 22:55:04,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:04,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 44 letters. Loop has 8 letters. [2024-11-20 22:55:04,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:04,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 36 letters. Loop has 16 letters. [2024-11-20 22:55:04,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:04,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 538 states and 752 transitions. [2024-11-20 22:55:04,409 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2024-11-20 22:55:04,417 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 538 states to 437 states and 632 transitions. [2024-11-20 22:55:04,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 187 [2024-11-20 22:55:04,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2024-11-20 22:55:04,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 437 states and 632 transitions. [2024-11-20 22:55:04,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:04,418 INFO L218 hiAutomatonCegarLoop]: Abstraction has 437 states and 632 transitions. [2024-11-20 22:55:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states and 632 transitions. [2024-11-20 22:55:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 366. [2024-11-20 22:55:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 244 states have (on average 1.2868852459016393) internal successors, (314), 265 states have internal predecessors, (314), 71 states have call successors, (74), 55 states have call predecessors, (74), 51 states have return successors, (118), 45 states have call predecessors, (118), 69 states have call successors, (118) [2024-11-20 22:55:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 506 transitions. [2024-11-20 22:55:04,452 INFO L240 hiAutomatonCegarLoop]: Abstraction has 366 states and 506 transitions. [2024-11-20 22:55:04,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:04,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 22:55:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-20 22:55:04,453 INFO L87 Difference]: Start difference. First operand 366 states and 506 transitions. Second operand has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 11 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-20 22:55:04,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:04,686 INFO L93 Difference]: Finished difference Result 437 states and 627 transitions. [2024-11-20 22:55:04,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 437 states and 627 transitions. [2024-11-20 22:55:04,689 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2024-11-20 22:55:04,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 437 states to 398 states and 583 transitions. [2024-11-20 22:55:04,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 216 [2024-11-20 22:55:04,698 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2024-11-20 22:55:04,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 583 transitions. [2024-11-20 22:55:04,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:04,698 INFO L218 hiAutomatonCegarLoop]: Abstraction has 398 states and 583 transitions. [2024-11-20 22:55:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 583 transitions. [2024-11-20 22:55:04,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 361. [2024-11-20 22:55:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 234 states have (on average 1.2393162393162394) internal successors, (290), 263 states have internal predecessors, (290), 74 states have call successors, (77), 50 states have call predecessors, (77), 53 states have return successors, (138), 47 states have call predecessors, (138), 72 states have call successors, (138) [2024-11-20 22:55:04,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 505 transitions. [2024-11-20 22:55:04,721 INFO L240 hiAutomatonCegarLoop]: Abstraction has 361 states and 505 transitions. [2024-11-20 22:55:04,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 22:55:04,723 INFO L425 stractBuchiCegarLoop]: Abstraction has 361 states and 505 transitions. [2024-11-20 22:55:04,723 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-20 22:55:04,723 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 361 states and 505 transitions. [2024-11-20 22:55:04,725 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2024-11-20 22:55:04,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:04,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:04,729 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:04,729 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-20 22:55:04,730 INFO L745 eck$LassoCheckResult]: Stem: 4958#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4917#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 4918#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4960#$Ultimate##0 ~n := #in~n; 5020#L10 assume !(~n < 1); 5019#L12 assume !(1 == ~n); 5007#L15 call #t~ret4 := fibo2(~n - 1);< 5017#$Ultimate##0 ~n := #in~n; 5016#L20 assume !(~n < 1); 5013#L22 assume !(1 == ~n); 4927#L25 call #t~ret6 := fibo1(~n - 1);< 5008#$Ultimate##0 ~n := #in~n; 5014#L10 assume !(~n < 1); 5100#L12 assume !(1 == ~n); 5088#L15 call #t~ret4 := fibo2(~n - 1);< 5113#$Ultimate##0 ~n := #in~n; 5116#L20 assume !(~n < 1); 5115#L22 assume 1 == ~n;#res := 1; 5114#fibo2FINAL assume true; 5112#fibo2EXIT >#52#return; 4926#L15-1 call #t~ret5 := fibo2(~n - 2);< 4930#$Ultimate##0 ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5104#fibo2FINAL assume true; 5101#fibo2EXIT >#54#return; 5099#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5097#fibo1FINAL assume true; 5095#fibo1EXIT >#48#return; 5080#L25-1 call #t~ret7 := fibo1(~n - 2);< 5092#$Ultimate##0 ~n := #in~n; 5178#L10 assume ~n < 1;#res := 0; 5174#fibo1FINAL assume true; 5131#fibo1EXIT >#50#return; 5130#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5129#fibo2FINAL assume true; 5128#fibo2EXIT >#52#return; 4889#L15-1 call #t~ret5 := fibo2(~n - 2);< 5082#$Ultimate##0 [2024-11-20 22:55:04,730 INFO L747 eck$LassoCheckResult]: Loop: 5082#$Ultimate##0 ~n := #in~n; 4899#L20 assume !(~n < 1); 4885#L22 assume !(1 == ~n); 4891#L25 call #t~ret6 := fibo1(~n - 1);< 5109#$Ultimate##0 ~n := #in~n; 5105#L10 assume !(~n < 1); 5106#L12 assume !(1 == ~n); 4890#L15 call #t~ret4 := fibo2(~n - 1);< 4897#$Ultimate##0 ~n := #in~n; 4899#L20 assume !(~n < 1); 4885#L22 assume !(1 == ~n); 4891#L25 call #t~ret6 := fibo1(~n - 1);< 5109#$Ultimate##0 ~n := #in~n; 5105#L10 assume !(~n < 1); 5106#L12 assume !(1 == ~n); 4890#L15 call #t~ret4 := fibo2(~n - 1);< 4897#$Ultimate##0 ~n := #in~n; 4898#L20 assume !(~n < 1); 5208#L22 assume 1 == ~n;#res := 1; 5150#fibo2FINAL assume true; 5148#fibo2EXIT >#52#return; 4886#L15-1 call #t~ret5 := fibo2(~n - 2);< 5082#$Ultimate##0 ~n := #in~n; 5083#L20 assume ~n < 1;#res := 0; 5207#fibo2FINAL assume true; 5145#fibo2EXIT >#54#return; 5123#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5141#fibo1FINAL assume true; 5138#fibo1EXIT >#48#return; 5134#L25-1 call #t~ret7 := fibo1(~n - 2);< 5140#$Ultimate##0 ~n := #in~n; 5159#L10 assume !(~n < 1); 5158#L12 assume !(1 == ~n); 5121#L15 call #t~ret4 := fibo2(~n - 1);< 5149#$Ultimate##0 ~n := #in~n; 5162#L20 assume !(~n < 1); 5160#L22 assume 1 == ~n;#res := 1; 5071#fibo2FINAL assume true; 5147#fibo2EXIT >#52#return; 4886#L15-1 call #t~ret5 := fibo2(~n - 2);< 5082#$Ultimate##0 ~n := #in~n; 5083#L20 assume ~n < 1;#res := 0; 5207#fibo2FINAL assume true; 5145#fibo2EXIT >#54#return; 5123#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5141#fibo1FINAL assume true; 5138#fibo1EXIT >#50#return; 5137#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5173#fibo2FINAL assume true; 5120#fibo2EXIT >#52#return; 4886#L15-1 call #t~ret5 := fibo2(~n - 2);< 5082#$Ultimate##0 [2024-11-20 22:55:04,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:04,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1302122831, now seen corresponding path program 1 times [2024-11-20 22:55:04,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:04,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296157345] [2024-11-20 22:55:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:04,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:04,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 22:55:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:04,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:04,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:04,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:04,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-20 22:55:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-20 22:55:04,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:04,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296157345] [2024-11-20 22:55:04,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296157345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:04,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924715189] [2024-11-20 22:55:04,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:04,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:04,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:04,903 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:04,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-20 22:55:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:04,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 22:55:04,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 22:55:04,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-20 22:55:05,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924715189] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:05,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:05,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2024-11-20 22:55:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684229832] [2024-11-20 22:55:05,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:05,154 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:05,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:05,155 INFO L85 PathProgramCache]: Analyzing trace with hash 592500779, now seen corresponding path program 1 times [2024-11-20 22:55:05,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:05,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256106899] [2024-11-20 22:55:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:05,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:05,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-20 22:55:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:05,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:05,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:05,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:05,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-20 22:55:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:05,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:05,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-20 22:55:05,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:05,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256106899] [2024-11-20 22:55:05,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256106899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:05,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892612875] [2024-11-20 22:55:05,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:05,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:05,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:05,350 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:05,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-20 22:55:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:05,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 22:55:05,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 22:55:05,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 22:55:05,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892612875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:05,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:05,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-20 22:55:05,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578584962] [2024-11-20 22:55:05,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:05,771 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-20 22:55:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:05,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-20 22:55:05,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-20 22:55:05,772 INFO L87 Difference]: Start difference. First operand 361 states and 505 transitions. cyclomatic complexity: 151 Second operand has 16 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 8 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-20 22:55:05,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:05,894 INFO L93 Difference]: Finished difference Result 404 states and 595 transitions. [2024-11-20 22:55:05,894 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 404 states and 595 transitions. [2024-11-20 22:55:05,898 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2024-11-20 22:55:05,901 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 404 states to 404 states and 595 transitions. [2024-11-20 22:55:05,901 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2024-11-20 22:55:05,901 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 221 [2024-11-20 22:55:05,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 404 states and 595 transitions. [2024-11-20 22:55:05,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:05,901 INFO L218 hiAutomatonCegarLoop]: Abstraction has 404 states and 595 transitions. [2024-11-20 22:55:05,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states and 595 transitions. [2024-11-20 22:55:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 369. [2024-11-20 22:55:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 238 states have (on average 1.2352941176470589) internal successors, (294), 269 states have internal predecessors, (294), 75 states have call successors, (78), 50 states have call predecessors, (78), 56 states have return successors, (143), 49 states have call predecessors, (143), 73 states have call successors, (143) [2024-11-20 22:55:05,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 515 transitions. [2024-11-20 22:55:05,914 INFO L240 hiAutomatonCegarLoop]: Abstraction has 369 states and 515 transitions. [2024-11-20 22:55:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 22:55:05,915 INFO L425 stractBuchiCegarLoop]: Abstraction has 369 states and 515 transitions. [2024-11-20 22:55:05,915 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-20 22:55:05,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 515 transitions. [2024-11-20 22:55:05,917 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2024-11-20 22:55:05,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:05,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:05,917 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:05,917 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:05,918 INFO L745 eck$LassoCheckResult]: Stem: 6437#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6399#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 6400#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6444#$Ultimate##0 ~n := #in~n; 6492#L10 assume !(~n < 1); 6491#L12 assume !(1 == ~n); 6476#L15 call #t~ret4 := fibo2(~n - 1);< 6489#$Ultimate##0 ~n := #in~n; 6488#L20 assume !(~n < 1); 6480#L22 assume !(1 == ~n); 6403#L25 call #t~ret6 := fibo1(~n - 1);< 6477#$Ultimate##0 ~n := #in~n; 6486#L10 assume !(~n < 1); 6582#L12 assume !(1 == ~n); 6553#L15 call #t~ret4 := fibo2(~n - 1);< 6584#$Ultimate##0 ~n := #in~n; 6590#L20 assume !(~n < 1); 6588#L22 assume 1 == ~n;#res := 1; 6586#fibo2FINAL assume true; 6583#fibo2EXIT >#52#return; 6401#L15-1 call #t~ret5 := fibo2(~n - 2);< 6405#$Ultimate##0 ~n := #in~n; 6592#L20 assume ~n < 1;#res := 0; 6591#fibo2FINAL assume true; 6589#fibo2EXIT >#54#return; 6587#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6585#fibo1FINAL assume true; 6563#fibo1EXIT >#48#return; 6537#L25-1 call #t~ret7 := fibo1(~n - 2);< 6560#$Ultimate##0 ~n := #in~n; 6633#L10 assume !(~n < 1); 6632#L12 assume 1 == ~n;#res := 1; 6631#fibo1FINAL assume true; 6625#fibo1EXIT >#50#return; 6616#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6623#fibo2FINAL assume true; 6622#fibo2EXIT >#52#return; 6432#L15-1 call #t~ret5 := fibo2(~n - 2);< 6559#$Ultimate##0 [2024-11-20 22:55:05,918 INFO L747 eck$LassoCheckResult]: Loop: 6559#$Ultimate##0 ~n := #in~n; 6428#L20 assume !(~n < 1); 6434#L22 assume !(1 == ~n); 6567#L25 call #t~ret6 := fibo1(~n - 1);< 6569#$Ultimate##0 ~n := #in~n; 6580#L10 assume !(~n < 1); 6576#L12 assume !(1 == ~n); 6430#L15 call #t~ret4 := fibo2(~n - 1);< 6612#$Ultimate##0 ~n := #in~n; 6630#L20 assume !(~n < 1); 6655#L22 assume 1 == ~n;#res := 1; 6648#fibo2FINAL assume true; 6640#fibo2EXIT >#52#return; 6431#L15-1 call #t~ret5 := fibo2(~n - 2);< 6559#$Ultimate##0 [2024-11-20 22:55:05,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:05,918 INFO L85 PathProgramCache]: Analyzing trace with hash -264197307, now seen corresponding path program 1 times [2024-11-20 22:55:05,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:05,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686816921] [2024-11-20 22:55:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:05,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:05,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:05,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:05,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash -93894958, now seen corresponding path program 1 times [2024-11-20 22:55:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:05,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265487212] [2024-11-20 22:55:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:05,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:05,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:05,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:05,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:05,946 INFO L85 PathProgramCache]: Analyzing trace with hash -387388650, now seen corresponding path program 2 times [2024-11-20 22:55:05,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:05,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239827858] [2024-11-20 22:55:05,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:05,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:06,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-20 22:55:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:06,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:06,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:06,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:06,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-20 22:55:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:06,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-20 22:55:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-20 22:55:06,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:06,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239827858] [2024-11-20 22:55:06,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239827858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:06,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409516916] [2024-11-20 22:55:06,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:55:06,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:06,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:06,058 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:06,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-20 22:55:06,094 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:55:06,095 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:55:06,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 22:55:06,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-20 22:55:06,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:06,240 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-20 22:55:06,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409516916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:06,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:06,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 13 [2024-11-20 22:55:06,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468389051] [2024-11-20 22:55:06,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:06,322 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:06,322 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:06,322 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:06,322 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:06,322 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:55:06,322 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,323 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:06,323 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:06,323 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration6_Loop [2024-11-20 22:55:06,323 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:06,323 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:06,323 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,324 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,326 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,329 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,331 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,333 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,334 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,335 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,362 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:06,362 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:55:06,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:06,364 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:06,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2024-11-20 22:55:06,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:06,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:06,375 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:06,376 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:06,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2024-11-20 22:55:06,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:06,384 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:06,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2024-11-20 22:55:06,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:06,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:06,399 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:06,399 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:06,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:06,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:06,407 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:06,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2024-11-20 22:55:06,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:06,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:06,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2024-11-20 22:55:06,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:06,425 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:06,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2024-11-20 22:55:06,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:55:06,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:06,439 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:55:06,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2024-11-20 22:55:06,445 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:06,445 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:06,445 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:06,445 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:06,445 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:55:06,445 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,445 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:06,445 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:06,445 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration6_Loop [2024-11-20 22:55:06,445 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:06,445 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:06,446 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,453 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,454 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,455 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,462 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:06,488 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:06,488 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:55:06,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:06,513 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:06,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2024-11-20 22:55:06,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:06,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:06,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:06,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:06,525 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:06,525 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:06,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:06,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:06,526 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:06,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2024-11-20 22:55:06,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:06,534 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:06,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2024-11-20 22:55:06,535 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 [2024-11-20 22:55:06,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:06,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:06,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:06,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:06,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:06,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:06,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:06,546 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:06,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2024-11-20 22:55:06,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:06,553 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:06,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2024-11-20 22:55:06,555 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:06,565 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:06,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:06,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:06,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:06,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:06,566 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:06,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:06,568 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:55:06,570 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:55:06,570 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-20 22:55:06,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:06,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:06,572 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:06,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2024-11-20 22:55:06,573 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:55:06,574 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:55:06,574 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:55:06,574 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2024-11-20 22:55:06,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2024-11-20 22:55:06,580 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:55:06,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:06,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 22:55:06,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:06,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 22:55:06,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:06,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:06,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:06,931 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-20 22:55:06,931 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 515 transitions. cyclomatic complexity: 153 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 22:55:07,209 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 515 transitions. cyclomatic complexity: 153. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 1260 states and 1729 transitions. Complement of second has 34 states. [2024-11-20 22:55:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:07,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 22:55:07,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 55 transitions. [2024-11-20 22:55:07,211 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 55 transitions. Stem has 38 letters. Loop has 14 letters. [2024-11-20 22:55:07,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:07,212 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:55:07,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:07,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 22:55:07,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:07,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 22:55:07,488 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:07,572 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-20 22:55:07,572 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 515 transitions. cyclomatic complexity: 153 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 22:55:07,855 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 515 transitions. cyclomatic complexity: 153. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 1260 states and 1729 transitions. Complement of second has 34 states. [2024-11-20 22:55:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 22:55:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 55 transitions. [2024-11-20 22:55:07,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 55 transitions. Stem has 38 letters. Loop has 14 letters. [2024-11-20 22:55:07,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:07,857 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-20 22:55:07,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:07,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 22:55:07,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:08,112 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 22:55:08,113 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 22:55:08,200 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-20 22:55:08,200 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 515 transitions. cyclomatic complexity: 153 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 22:55:08,575 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 515 transitions. cyclomatic complexity: 153. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 1083 states and 1467 transitions. Complement of second has 37 states. [2024-11-20 22:55:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:08,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 22:55:08,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 59 transitions. [2024-11-20 22:55:08,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 59 transitions. Stem has 38 letters. Loop has 14 letters. [2024-11-20 22:55:08,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:08,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 59 transitions. Stem has 52 letters. Loop has 14 letters. [2024-11-20 22:55:08,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:08,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 59 transitions. Stem has 38 letters. Loop has 28 letters. [2024-11-20 22:55:08,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:08,580 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1083 states and 1467 transitions. [2024-11-20 22:55:08,589 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 102 [2024-11-20 22:55:08,596 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1083 states to 648 states and 953 transitions. [2024-11-20 22:55:08,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 212 [2024-11-20 22:55:08,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 228 [2024-11-20 22:55:08,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 648 states and 953 transitions. [2024-11-20 22:55:08,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:08,599 INFO L218 hiAutomatonCegarLoop]: Abstraction has 648 states and 953 transitions. [2024-11-20 22:55:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states and 953 transitions. [2024-11-20 22:55:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 507. [2024-11-20 22:55:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 325 states have (on average 1.2307692307692308) internal successors, (400), 356 states have internal predecessors, (400), 106 states have call successors, (109), 68 states have call predecessors, (109), 76 states have return successors, (188), 82 states have call predecessors, (188), 104 states have call successors, (188) [2024-11-20 22:55:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 697 transitions. [2024-11-20 22:55:08,617 INFO L240 hiAutomatonCegarLoop]: Abstraction has 507 states and 697 transitions. [2024-11-20 22:55:08,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:08,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 22:55:08,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-20 22:55:08,618 INFO L87 Difference]: Start difference. First operand 507 states and 697 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-20 22:55:08,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:08,781 INFO L93 Difference]: Finished difference Result 573 states and 792 transitions. [2024-11-20 22:55:08,782 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 573 states and 792 transitions. [2024-11-20 22:55:08,785 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2024-11-20 22:55:08,789 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 573 states to 535 states and 749 transitions. [2024-11-20 22:55:08,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 212 [2024-11-20 22:55:08,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 212 [2024-11-20 22:55:08,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 749 transitions. [2024-11-20 22:55:08,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:08,791 INFO L218 hiAutomatonCegarLoop]: Abstraction has 535 states and 749 transitions. [2024-11-20 22:55:08,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states and 749 transitions. [2024-11-20 22:55:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 503. [2024-11-20 22:55:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 323 states have (on average 1.2321981424148607) internal successors, (398), 354 states have internal predecessors, (398), 105 states have call successors, (107), 68 states have call predecessors, (107), 75 states have return successors, (183), 80 states have call predecessors, (183), 101 states have call successors, (183) [2024-11-20 22:55:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 688 transitions. [2024-11-20 22:55:08,809 INFO L240 hiAutomatonCegarLoop]: Abstraction has 503 states and 688 transitions. [2024-11-20 22:55:08,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-20 22:55:08,810 INFO L425 stractBuchiCegarLoop]: Abstraction has 503 states and 688 transitions. [2024-11-20 22:55:08,811 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-20 22:55:08,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 503 states and 688 transitions. [2024-11-20 22:55:08,814 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2024-11-20 22:55:08,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:08,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:08,820 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:08,820 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-20 22:55:08,820 INFO L745 eck$LassoCheckResult]: Stem: 12546#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 12510#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 12511#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 12556#$Ultimate##0 ~n := #in~n; 12832#L10 assume !(~n < 1); 12830#L12 assume !(1 == ~n); 12635#L15 call #t~ret4 := fibo2(~n - 1);< 12824#$Ultimate##0 ~n := #in~n; 12821#L20 assume !(~n < 1); 12819#L22 assume !(1 == ~n); 12518#L25 call #t~ret6 := fibo1(~n - 1);< 12636#$Ultimate##0 ~n := #in~n; 12638#L10 assume !(~n < 1); 12782#L12 assume !(1 == ~n); 12573#L15 call #t~ret4 := fibo2(~n - 1);< 12653#$Ultimate##0 ~n := #in~n; 12833#L20 assume !(~n < 1); 12644#L22 assume !(1 == ~n); 12520#L25 call #t~ret6 := fibo1(~n - 1);< 12636#$Ultimate##0 ~n := #in~n; 12638#L10 assume !(~n < 1); 12782#L12 assume !(1 == ~n); 12573#L15 call #t~ret4 := fibo2(~n - 1);< 12653#$Ultimate##0 ~n := #in~n; 12833#L20 assume !(~n < 1); 12644#L22 assume 1 == ~n;#res := 1; 12645#fibo2FINAL assume true; 12687#fibo2EXIT >#52#return; 12577#L15-1 call #t~ret5 := fibo2(~n - 2);< 12656#$Ultimate##0 ~n := #in~n; 12679#L20 assume !(~n < 1); 12812#L22 assume !(1 == ~n); 12810#L25 call #t~ret6 := fibo1(~n - 1);< 12811#$Ultimate##0 ~n := #in~n; 12816#L10 assume !(~n < 1); 12814#L12 assume 1 == ~n;#res := 1; 12813#fibo1FINAL assume true; 12809#fibo1EXIT >#48#return; 12807#L25-1 call #t~ret7 := fibo1(~n - 2);< 12808#$Ultimate##0 ~n := #in~n; 12817#L10 assume ~n < 1;#res := 0; 12815#fibo1FINAL assume true; 12806#fibo1EXIT >#50#return; 12805#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 12804#fibo2FINAL assume true; 12640#fibo2EXIT >#54#return; 12639#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12634#fibo1FINAL assume true; 12615#fibo1EXIT >#48#return; 12604#L25-1 call #t~ret7 := fibo1(~n - 2);< 12605#$Ultimate##0 ~n := #in~n; 12662#L10 assume !(~n < 1); 12659#L12 assume !(1 == ~n); 12579#L15 call #t~ret4 := fibo2(~n - 1);< 12651#$Ultimate##0 ~n := #in~n; 12694#L20 assume !(~n < 1); 12690#L22 assume 1 == ~n;#res := 1; 12657#fibo2FINAL assume true; 12648#fibo2EXIT >#52#return; 12472#L15-1 call #t~ret5 := fibo2(~n - 2);< 12643#$Ultimate##0 ~n := #in~n; 12534#L20 assume ~n < 1;#res := 0; 12473#fibo2FINAL assume true; 12527#fibo2EXIT >#54#return; 12639#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12634#fibo1FINAL assume true; 12615#fibo1EXIT >#50#return; 12602#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 12572#fibo2FINAL assume true; 12583#fibo2EXIT >#52#return; 12472#L15-1 [2024-11-20 22:55:08,821 INFO L747 eck$LassoCheckResult]: Loop: 12472#L15-1 call #t~ret5 := fibo2(~n - 2);< 12643#$Ultimate##0 ~n := #in~n; 12758#L20 assume !(~n < 1); 12801#L22 assume !(1 == ~n); 12618#L25 call #t~ret6 := fibo1(~n - 1);< 12626#$Ultimate##0 ~n := #in~n; 12726#L10 assume !(~n < 1); 12705#L12 assume !(1 == ~n); 12580#L15 call #t~ret4 := fibo2(~n - 1);< 12650#$Ultimate##0 ~n := #in~n; 12758#L20 assume !(~n < 1); 12801#L22 assume !(1 == ~n); 12618#L25 call #t~ret6 := fibo1(~n - 1);< 12626#$Ultimate##0 ~n := #in~n; 12726#L10 assume !(~n < 1); 12705#L12 assume !(1 == ~n); 12580#L15 call #t~ret4 := fibo2(~n - 1);< 12650#$Ultimate##0 ~n := #in~n; 12756#L20 assume !(~n < 1); 12718#L22 assume 1 == ~n;#res := 1; 12716#fibo2FINAL assume true; 12714#fibo2EXIT >#52#return; 12512#L15-1 call #t~ret5 := fibo2(~n - 2);< 12642#$Ultimate##0 ~n := #in~n; 12803#L20 assume ~n < 1;#res := 0; 12947#fibo2FINAL assume true; 12700#fibo2EXIT >#54#return; 12639#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12634#fibo1FINAL assume true; 12615#fibo1EXIT >#48#return; 12604#L25-1 call #t~ret7 := fibo1(~n - 2);< 12605#$Ultimate##0 ~n := #in~n; 12662#L10 assume !(~n < 1); 12659#L12 assume !(1 == ~n); 12579#L15 call #t~ret4 := fibo2(~n - 1);< 12651#$Ultimate##0 ~n := #in~n; 12694#L20 assume !(~n < 1); 12690#L22 assume 1 == ~n;#res := 1; 12657#fibo2FINAL assume true; 12648#fibo2EXIT >#52#return; 12472#L15-1 call #t~ret5 := fibo2(~n - 2);< 12643#$Ultimate##0 ~n := #in~n; 12534#L20 assume ~n < 1;#res := 0; 12473#fibo2FINAL assume true; 12527#fibo2EXIT >#54#return; 12639#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12634#fibo1FINAL assume true; 12615#fibo1EXIT >#50#return; 12602#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 12572#fibo2FINAL assume true; 12583#fibo2EXIT >#52#return; 12472#L15-1 [2024-11-20 22:55:08,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2114414096, now seen corresponding path program 1 times [2024-11-20 22:55:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:08,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258160779] [2024-11-20 22:55:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:08,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:08,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 22:55:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:08,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:08,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:08,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-20 22:55:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,025 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 14 proven. 50 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-20 22:55:09,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258160779] [2024-11-20 22:55:09,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258160779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:09,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828998914] [2024-11-20 22:55:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:09,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:09,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:09,030 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:09,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-20 22:55:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 22:55:09,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-20 22:55:09,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-20 22:55:09,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828998914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:09,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:09,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2024-11-20 22:55:09,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050142967] [2024-11-20 22:55:09,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:09,313 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:09,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:09,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1108085027, now seen corresponding path program 2 times [2024-11-20 22:55:09,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:09,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341296737] [2024-11-20 22:55:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:09,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-20 22:55:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-20 22:55:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-20 22:55:09,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341296737] [2024-11-20 22:55:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341296737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166724902] [2024-11-20 22:55:09,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 22:55:09,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:09,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:09,448 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:09,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-20 22:55:09,483 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 22:55:09,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 22:55:09,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 22:55:09,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:09,554 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 22:55:09,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 22:55:09,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166724902] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:09,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:09,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-20 22:55:09,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528134537] [2024-11-20 22:55:09,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:09,851 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-20 22:55:09,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:09,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 22:55:09,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-20 22:55:09,852 INFO L87 Difference]: Start difference. First operand 503 states and 688 transitions. cyclomatic complexity: 193 Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-20 22:55:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:10,062 INFO L93 Difference]: Finished difference Result 206 states and 261 transitions. [2024-11-20 22:55:10,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 261 transitions. [2024-11-20 22:55:10,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2024-11-20 22:55:10,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 158 states and 197 transitions. [2024-11-20 22:55:10,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 111 [2024-11-20 22:55:10,065 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2024-11-20 22:55:10,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 197 transitions. [2024-11-20 22:55:10,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:10,065 INFO L218 hiAutomatonCegarLoop]: Abstraction has 158 states and 197 transitions. [2024-11-20 22:55:10,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states and 197 transitions. [2024-11-20 22:55:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2024-11-20 22:55:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.1734693877551021) internal successors, (115), 105 states have internal predecessors, (115), 27 states have call successors, (27), 20 states have call predecessors, (27), 25 states have return successors, (46), 24 states have call predecessors, (46), 24 states have call successors, (46) [2024-11-20 22:55:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 188 transitions. [2024-11-20 22:55:10,069 INFO L240 hiAutomatonCegarLoop]: Abstraction has 150 states and 188 transitions. [2024-11-20 22:55:10,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 22:55:10,070 INFO L425 stractBuchiCegarLoop]: Abstraction has 150 states and 188 transitions. [2024-11-20 22:55:10,070 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-20 22:55:10,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 150 states and 188 transitions. [2024-11-20 22:55:10,070 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2024-11-20 22:55:10,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-20 22:55:10,071 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-20 22:55:10,071 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:10,071 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 22:55:10,071 INFO L745 eck$LassoCheckResult]: Stem: 14243#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 14217#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 14212#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 14211#$Ultimate##0 ~n := #in~n; 14213#L10 assume !(~n < 1); 14234#L12 assume !(1 == ~n); 14220#L15 call #t~ret4 := fibo2(~n - 1);< 14239#$Ultimate##0 ~n := #in~n; 14296#L20 assume !(~n < 1); 14294#L22 assume !(1 == ~n); 14209#L25 call #t~ret6 := fibo1(~n - 1);< 14214#$Ultimate##0 ~n := #in~n; 14216#L10 assume !(~n < 1); 14303#L12 assume !(1 == ~n); 14189#L15 call #t~ret4 := fibo2(~n - 1);< 14194#$Ultimate##0 ~n := #in~n; 14195#L20 assume !(~n < 1); 14188#L22 assume !(1 == ~n); 14190#L25 call #t~ret6 := fibo1(~n - 1);< 14214#$Ultimate##0 ~n := #in~n; 14215#L10 assume !(~n < 1); 14298#L12 assume 1 == ~n;#res := 1; 14299#fibo1FINAL assume true; 14327#fibo1EXIT >#48#return; 14203#L25-1 call #t~ret7 := fibo1(~n - 2);< 14302#$Ultimate##0 ~n := #in~n; 14237#L10 assume ~n < 1;#res := 0; 14202#fibo1FINAL assume true; 14205#fibo1EXIT >#50#return; 14279#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 14274#fibo2FINAL assume true; 14270#fibo2EXIT >#52#return; 14197#L15-1 [2024-11-20 22:55:10,072 INFO L747 eck$LassoCheckResult]: Loop: 14197#L15-1 call #t~ret5 := fibo2(~n - 2);< 14263#$Ultimate##0 ~n := #in~n; 14260#L20 assume !(~n < 1); 14262#L22 assume !(1 == ~n); 14227#L25 call #t~ret6 := fibo1(~n - 1);< 14261#$Ultimate##0 ~n := #in~n; 14258#L10 assume !(~n < 1); 14253#L12 assume !(1 == ~n); 14200#L15 call #t~ret4 := fibo2(~n - 1);< 14249#$Ultimate##0 ~n := #in~n; 14260#L20 assume !(~n < 1); 14262#L22 assume !(1 == ~n); 14227#L25 call #t~ret6 := fibo1(~n - 1);< 14261#$Ultimate##0 ~n := #in~n; 14258#L10 assume !(~n < 1); 14253#L12 assume !(1 == ~n); 14200#L15 call #t~ret4 := fibo2(~n - 1);< 14249#$Ultimate##0 ~n := #in~n; 14257#L20 assume !(~n < 1); 14251#L22 assume 1 == ~n;#res := 1; 14252#fibo2FINAL assume true; 14321#fibo2EXIT >#52#return; 14192#L15-1 call #t~ret5 := fibo2(~n - 2);< 14191#$Ultimate##0 ~n := #in~n; 14193#L20 assume ~n < 1;#res := 0; 14240#fibo2FINAL assume true; 14329#fibo2EXIT >#54#return; 14306#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 14304#fibo1FINAL assume true; 14286#fibo1EXIT >#48#return; 14283#L25-1 call #t~ret7 := fibo1(~n - 2);< 14285#$Ultimate##0 ~n := #in~n; 14305#L10 assume !(~n < 1); 14301#L12 assume 1 == ~n;#res := 1; 14276#fibo1FINAL assume true; 14287#fibo1EXIT >#50#return; 14288#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 14300#fibo2FINAL assume true; 14266#fibo2EXIT >#52#return; 14197#L15-1 [2024-11-20 22:55:10,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2024-11-20 22:55:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:10,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79560091] [2024-11-20 22:55:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:10,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:10,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 22:55:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:10,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-20 22:55:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:10,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 22:55:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 22:55:10,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 22:55:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79560091] [2024-11-20 22:55:10,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79560091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 22:55:10,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979085287] [2024-11-20 22:55:10,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:10,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 22:55:10,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,181 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-20 22:55:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:10,213 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 22:55:10,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:10,258 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:55:10,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 22:55:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 22:55:10,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979085287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 22:55:10,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 22:55:10,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2024-11-20 22:55:10,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217234813] [2024-11-20 22:55:10,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 22:55:10,425 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-20 22:55:10,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1769482030, now seen corresponding path program 1 times [2024-11-20 22:55:10,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 22:55:10,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989725236] [2024-11-20 22:55:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 22:55:10,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 22:55:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:10,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-20 22:55:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-20 22:55:10,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-20 22:55:10,662 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:10,662 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:10,662 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:10,662 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:10,663 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-20 22:55:10,663 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,663 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:10,663 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:10,663 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2024-11-20 22:55:10,663 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:10,663 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:10,664 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,667 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,668 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,671 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,674 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,704 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:10,704 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-20 22:55:10,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,706 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2024-11-20 22:55:10,707 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:10,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,718 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:10,718 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:10,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:10,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,725 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2024-11-20 22:55:10,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:10,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,738 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:10,738 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=4} Honda state: {fibo1_#in~n=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:10,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:10,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,745 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2024-11-20 22:55:10,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:10,746 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,757 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:10,757 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:10,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2024-11-20 22:55:10,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,764 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2024-11-20 22:55:10,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:10,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,776 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:10,776 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:10,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2024-11-20 22:55:10,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,783 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2024-11-20 22:55:10,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:10,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,797 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:10,797 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:10,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:10,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,804 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2024-11-20 22:55:10,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:10,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,816 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:10,816 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:10,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:10,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,823 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2024-11-20 22:55:10,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:10,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,835 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:10,835 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:10,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:10,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,842 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2024-11-20 22:55:10,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:10,844 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,854 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-20 22:55:10,854 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=2} Honda state: {fibo1_#t~ret4=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-20 22:55:10,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2024-11-20 22:55:10,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,861 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2024-11-20 22:55:10,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-20 22:55:10,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:10,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,886 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2024-11-20 22:55:10,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-20 22:55:10,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-20 22:55:10,899 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-20 22:55:10,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2024-11-20 22:55:10,905 INFO L204 LassoAnalysis]: Preferences: [2024-11-20 22:55:10,905 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-20 22:55:10,905 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-20 22:55:10,905 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-20 22:55:10,905 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-20 22:55:10,905 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,905 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-20 22:55:10,905 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-20 22:55:10,905 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2024-11-20 22:55:10,905 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-20 22:55:10,905 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-20 22:55:10,906 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,907 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,908 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,909 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,910 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,912 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,913 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,914 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,916 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-20 22:55:10,950 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-20 22:55:10,951 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-20 22:55:10,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,952 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2024-11-20 22:55:10,954 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:10,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:10,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:10,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:10,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:10,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:10,963 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:10,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:10,964 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:10,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2024-11-20 22:55:10,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,971 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2024-11-20 22:55:10,972 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:10,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:10,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:10,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:10,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:10,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:10,983 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:10,983 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:10,984 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:10,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2024-11-20 22:55:10,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:10,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:10,990 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:10,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2024-11-20 22:55:10,992 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:11,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:11,002 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:11,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:11,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:11,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:11,002 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:11,002 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:11,003 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:11,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:11,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:11,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:11,010 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:11,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2024-11-20 22:55:11,012 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:11,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:11,022 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:11,022 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:11,022 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:11,022 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:11,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:11,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:11,024 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:11,030 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2024-11-20 22:55:11,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:11,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:11,031 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:11,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2024-11-20 22:55:11,033 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:11,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:11,043 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:11,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:11,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:11,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:11,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:11,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:11,044 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:11,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2024-11-20 22:55:11,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:11,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:11,051 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:11,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2024-11-20 22:55:11,053 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:11,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:11,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:11,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:11,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:11,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:11,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:11,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:11,065 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:11,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2024-11-20 22:55:11,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:11,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:11,073 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:11,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2024-11-20 22:55:11,075 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:11,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:11,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:11,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:11,085 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:11,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:11,086 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:11,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:11,087 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:11,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:11,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:11,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:11,093 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:11,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2024-11-20 22:55:11,095 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:11,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:11,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:11,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:11,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:11,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:11,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:11,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:11,107 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-20 22:55:11,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:11,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:11,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:11,115 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:11,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2024-11-20 22:55:11,116 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-20 22:55:11,126 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-20 22:55:11,126 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-20 22:55:11,126 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-20 22:55:11,126 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-20 22:55:11,126 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-20 22:55:11,127 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-20 22:55:11,127 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-20 22:55:11,128 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-20 22:55:11,130 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-20 22:55:11,130 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-20 22:55:11,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-20 22:55:11,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 22:55:11,132 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-20 22:55:11,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2024-11-20 22:55:11,133 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-20 22:55:11,133 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-20 22:55:11,133 INFO L474 LassoAnalysis]: Proved termination. [2024-11-20 22:55:11,133 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2024-11-20 22:55:11,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2024-11-20 22:55:11,139 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-20 22:55:11,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 22:55:11,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:11,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 22:55:11,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:11,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 22:55:11,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-20 22:55:11,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 22:55:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-20 22:55:11,496 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2024-11-20 22:55:11,496 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 150 states and 188 transitions. cyclomatic complexity: 40 Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 9 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-20 22:55:11,883 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 150 states and 188 transitions. cyclomatic complexity: 40. Second operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 9 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 7 states have call successors, (8) Result 579 states and 758 transitions. Complement of second has 72 states. [2024-11-20 22:55:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 17 states 2 stem states 14 non-accepting loop states 1 accepting loop states [2024-11-20 22:55:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 9 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-20 22:55:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 80 transitions. [2024-11-20 22:55:11,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 80 transitions. Stem has 32 letters. Loop has 39 letters. [2024-11-20 22:55:11,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:11,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 80 transitions. Stem has 71 letters. Loop has 39 letters. [2024-11-20 22:55:11,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:11,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 80 transitions. Stem has 32 letters. Loop has 78 letters. [2024-11-20 22:55:11,886 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-20 22:55:11,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 579 states and 758 transitions. [2024-11-20 22:55:11,892 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2024-11-20 22:55:11,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 579 states to 527 states and 695 transitions. [2024-11-20 22:55:11,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 260 [2024-11-20 22:55:11,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 280 [2024-11-20 22:55:11,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 527 states and 695 transitions. [2024-11-20 22:55:11,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-20 22:55:11,897 INFO L218 hiAutomatonCegarLoop]: Abstraction has 527 states and 695 transitions. [2024-11-20 22:55:11,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states and 695 transitions. [2024-11-20 22:55:11,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 476. [2024-11-20 22:55:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 306 states have (on average 1.1830065359477124) internal successors, (362), 325 states have internal predecessors, (362), 92 states have call successors, (93), 60 states have call predecessors, (93), 78 states have return successors, (168), 90 states have call predecessors, (168), 89 states have call successors, (168) [2024-11-20 22:55:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 623 transitions. [2024-11-20 22:55:11,906 INFO L240 hiAutomatonCegarLoop]: Abstraction has 476 states and 623 transitions. [2024-11-20 22:55:11,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 22:55:11,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 22:55:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-20 22:55:11,907 INFO L87 Difference]: Start difference. First operand 476 states and 623 transitions. Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-20 22:55:12,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 22:55:12,046 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2024-11-20 22:55:12,046 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 58 transitions. [2024-11-20 22:55:12,047 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-20 22:55:12,047 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 0 states and 0 transitions. [2024-11-20 22:55:12,047 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-20 22:55:12,047 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-20 22:55:12,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-20 22:55:12,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-20 22:55:12,047 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 22:55:12,047 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 22:55:12,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-20 22:55:12,052 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-20 22:55:12,052 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-11-20 22:55:12,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-20 22:55:12,053 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-20 22:55:12,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-20 22:55:12,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:55:12 BoogieIcfgContainer [2024-11-20 22:55:12,060 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-20 22:55:12,061 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 22:55:12,061 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 22:55:12,061 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 22:55:12,062 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:54:57" (3/4) ... [2024-11-20 22:55:12,063 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-20 22:55:12,064 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 22:55:12,065 INFO L158 Benchmark]: Toolchain (without parser) took 14655.87ms. Allocated memory was 125.8MB in the beginning and 257.9MB in the end (delta: 132.1MB). Free memory was 56.0MB in the beginning and 112.4MB in the end (delta: -56.5MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. [2024-11-20 22:55:12,065 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:55:12,065 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.36ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 55.7MB in the beginning and 143.8MB in the end (delta: -88.1MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2024-11-20 22:55:12,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.73ms. Allocated memory is still 178.3MB. Free memory was 143.8MB in the beginning and 142.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:55:12,065 INFO L158 Benchmark]: Boogie Preprocessor took 28.52ms. Allocated memory is still 178.3MB. Free memory was 142.2MB in the beginning and 140.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 22:55:12,065 INFO L158 Benchmark]: RCFGBuilder took 228.04ms. Allocated memory is still 178.3MB. Free memory was 140.1MB in the beginning and 129.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-20 22:55:12,066 INFO L158 Benchmark]: BuchiAutomizer took 14098.39ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 129.6MB in the beginning and 112.4MB in the end (delta: 17.1MB). Peak memory consumption was 97.4MB. Max. memory is 16.1GB. [2024-11-20 22:55:12,066 INFO L158 Benchmark]: Witness Printer took 3.44ms. Allocated memory is still 257.9MB. Free memory is still 112.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 22:55:12,067 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.36ms. Allocated memory was 125.8MB in the beginning and 178.3MB in the end (delta: 52.4MB). Free memory was 55.7MB in the beginning and 143.8MB in the end (delta: -88.1MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.73ms. Allocated memory is still 178.3MB. Free memory was 143.8MB in the beginning and 142.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.52ms. Allocated memory is still 178.3MB. Free memory was 142.2MB in the beginning and 140.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 228.04ms. Allocated memory is still 178.3MB. Free memory was 140.1MB in the beginning and 129.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 14098.39ms. Allocated memory was 178.3MB in the beginning and 257.9MB in the end (delta: 79.7MB). Free memory was 129.6MB in the beginning and 112.4MB in the end (delta: 17.1MB). Peak memory consumption was 97.4MB. Max. memory is 16.1GB. * Witness Printer took 3.44ms. Allocated memory is still 257.9MB. Free memory is still 112.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (7 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 8 locations. One deterministic module has affine ranking function n and consists of 14 locations. One deterministic module has affine ranking function n and consists of 17 locations. One nondeterministic module has affine ranking function \old(n) and consists of 9 locations. One nondeterministic module has affine ranking function \old(n) and consists of 12 locations. 7 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.0s and 9 iterations. TraceHistogramMax:6. Analysis of lassos took 7.3s. Construction of modules took 1.4s. Büchi inclusion checks took 4.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 419 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 9/41 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 759 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 732 mSDsluCounter, 1501 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1104 mSDsCounter, 458 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2643 IncrementalHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 458 mSolverCounterUnsat, 397 mSDtfsCounter, 2643 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI3 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp82 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq189 hnf91 smp82 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 28 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-20 22:55:12,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:12,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-20 22:55:12,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:12,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:12,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:13,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2024-11-20 22:55:13,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:13,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-20 22:55:13,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE