./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_7-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/recursive-simple/fibo_7-1.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 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 15:00:28,345 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 15:00:28,421 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-19 15:00:28,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 15:00:28,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 15:00:28,464 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 15:00:28,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 15:00:28,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 15:00:28,466 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 15:00:28,467 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 15:00:28,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 15:00:28,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 15:00:28,469 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 15:00:28,469 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-19 15:00:28,471 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-19 15:00:28,471 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-19 15:00:28,472 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-19 15:00:28,472 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-19 15:00:28,472 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-19 15:00:28,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 15:00:28,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-19 15:00:28,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 15:00:28,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 15:00:28,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 15:00:28,474 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 15:00:28,474 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-19 15:00:28,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-19 15:00:28,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-19 15:00:28,475 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 15:00:28,475 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 15:00:28,476 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 15:00:28,476 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 15:00:28,476 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-19 15:00:28,476 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 15:00:28,477 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 15:00:28,477 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 15:00:28,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 15:00:28,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 15:00:28,478 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-19 15:00:28,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 17c70baee0bc6a4a26b6403fb6f46125ad9d7f8a7127109634f2327c61aaf5cb [2024-11-19 15:00:28,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 15:00:28,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 15:00:28,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 15:00:28,764 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 15:00:28,764 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 15:00:28,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-11-19 15:00:30,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 15:00:30,437 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 15:00:30,439 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-11-19 15:00:30,447 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13979c82c/89569ad53a564f1b9ca18d4b8a955d8a/FLAGab7965119 [2024-11-19 15:00:30,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13979c82c/89569ad53a564f1b9ca18d4b8a955d8a [2024-11-19 15:00:30,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 15:00:30,462 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 15:00:30,463 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 15:00:30,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 15:00:30,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 15:00:30,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b940a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30, skipping insertion in model container [2024-11-19 15:00:30,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,488 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 15:00:30,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 15:00:30,672 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 15:00:30,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 15:00:30,705 INFO L204 MainTranslator]: Completed translation [2024-11-19 15:00:30,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30 WrapperNode [2024-11-19 15:00:30,706 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 15:00:30,707 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 15:00:30,707 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 15:00:30,708 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 15:00:30,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,748 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-19 15:00:30,748 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 15:00:30,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 15:00:30,749 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 15:00:30,749 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 15:00:30,758 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,771 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]. [2024-11-19 15:00:30,771 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,776 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 15:00:30,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 15:00:30,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 15:00:30,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 15:00:30,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (1/1) ... [2024-11-19 15:00:30,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:30,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:30,816 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) [2024-11-19 15:00:30,820 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 [2024-11-19 15:00:30,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 15:00:30,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 15:00:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 15:00:30,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 15:00:30,863 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-19 15:00:30,863 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-19 15:00:30,916 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 15:00:30,918 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 15:00:30,997 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-19 15:00:30,997 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 15:00:31,008 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 15:00:31,008 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 15:00:31,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:31 BoogieIcfgContainer [2024-11-19 15:00:31,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 15:00:31,010 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-19 15:00:31,010 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-19 15:00:31,013 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-19 15:00:31,013 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 15:00:31,014 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 03:00:30" (1/3) ... [2024-11-19 15:00:31,014 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@19db2500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 03:00:31, skipping insertion in model container [2024-11-19 15:00:31,015 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 15:00:31,015 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:30" (2/3) ... [2024-11-19 15:00:31,015 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@19db2500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 03:00:31, skipping insertion in model container [2024-11-19 15:00:31,015 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 15:00:31,015 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:31" (3/3) ... [2024-11-19 15:00:31,016 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_7-1.c [2024-11-19 15:00:31,060 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-19 15:00:31,060 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-19 15:00:31,061 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-19 15:00:31,061 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-19 15:00:31,061 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-19 15:00:31,061 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-19 15:00:31,061 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-19 15:00:31,061 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-19 15:00:31,064 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 15:00:31,081 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-19 15:00:31,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:31,081 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:31,086 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-19 15:00:31,086 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-19 15:00:31,086 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-19 15:00:31,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-19 15:00:31,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-19 15:00:31,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:31,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:31,089 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-19 15:00:31,090 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-19 15:00:31,097 INFO L745 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2024-11-19 15:00:31,097 INFO L747 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2024-11-19 15:00:31,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:31,103 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2024-11-19 15:00:31,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:31,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333395663] [2024-11-19 15:00:31,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:31,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:31,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:31,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:31,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2024-11-19 15:00:31,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:31,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613178933] [2024-11-19 15:00:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:31,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:31,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:31,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2024-11-19 15:00:31,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:31,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193592920] [2024-11-19 15:00:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:31,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:31,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:31,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:31,569 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:31,574 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:31,574 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:31,574 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:31,574 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:31,574 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:31,574 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:31,574 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:31,574 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration1_Loop [2024-11-19 15:00:31,574 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:31,575 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:31,600 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,614 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,617 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,622 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,709 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:31,710 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:31,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:31,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:31,714 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) [2024-11-19 15:00:31,716 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 [2024-11-19 15:00:31,718 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:31,718 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:31,736 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:31,736 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:31,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:31,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:31,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:31,755 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) [2024-11-19 15:00:31,756 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 [2024-11-19 15:00:31,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:31,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:31,774 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:31,775 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:31,790 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 [2024-11-19 15:00:31,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:31,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:31,792 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) [2024-11-19 15:00:31,794 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 [2024-11-19 15:00:31,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:31,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:31,810 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:31,811 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:31,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-19 15:00:31,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:31,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:31,828 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) [2024-11-19 15:00:31,829 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 [2024-11-19 15:00:31,831 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:31,831 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:31,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-19 15:00:31,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:31,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:31,861 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) [2024-11-19 15:00:31,862 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 [2024-11-19 15:00:31,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:31,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:31,924 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:31,929 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 [2024-11-19 15:00:31,930 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:31,930 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:31,930 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:31,930 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:31,930 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:31,930 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:31,930 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:31,930 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:31,930 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration1_Loop [2024-11-19 15:00:31,930 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:31,930 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:31,932 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,936 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,939 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,942 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,950 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:31,995 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:32,000 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:32,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:32,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:32,004 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) [2024-11-19 15:00:32,005 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 [2024-11-19 15:00:32,007 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 [2024-11-19 15:00:32,020 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:32,021 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:32,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:32,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:32,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:32,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:32,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:32,026 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:32,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-19 15:00:32,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:32,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:32,048 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) [2024-11-19 15:00:32,050 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 [2024-11-19 15:00:32,051 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 [2024-11-19 15:00:32,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:32,064 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:32,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:32,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:32,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:32,065 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:32,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:32,068 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:32,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:32,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:32,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:32,084 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) [2024-11-19 15:00:32,084 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 [2024-11-19 15:00:32,085 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 [2024-11-19 15:00:32,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:32,096 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:32,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:32,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:32,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:32,097 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:32,097 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:32,098 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:32,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:32,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:32,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:32,111 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) [2024-11-19 15:00:32,112 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 [2024-11-19 15:00:32,113 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 [2024-11-19 15:00:32,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:32,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:32,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:32,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:32,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:32,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:32,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:32,132 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:32,135 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 15:00:32,136 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 15:00:32,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:32,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:32,159 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) [2024-11-19 15:00:32,160 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 [2024-11-19 15:00:32,162 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:32,162 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:32,162 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:32,163 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-11-19 15:00:32,175 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 [2024-11-19 15:00:32,178 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:32,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:32,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 15:00:32,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:32,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 15:00:32,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:32,341 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-19 15:00:32,343 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 15:00:32,438 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 54 transitions. Complement of second has 16 states. [2024-11-19 15:00:32,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 15:00:32,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-11-19 15:00:32,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-19 15:00:32,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:32,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-19 15:00:32,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:32,447 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-19 15:00:32,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:32,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2024-11-19 15:00:32,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-19 15:00:32,456 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 23 states and 31 transitions. [2024-11-19 15:00:32,457 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-11-19 15:00:32,457 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-11-19 15:00:32,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-11-19 15:00:32,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:32,459 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-11-19 15:00:32,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-11-19 15:00:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-11-19 15:00:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 15:00:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-19 15:00:32,482 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-19 15:00:32,482 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-19 15:00:32,482 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-19 15:00:32,482 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-11-19 15:00:32,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-19 15:00:32,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:32,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:32,484 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:32,484 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:32,485 INFO L745 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 121#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 120#$Ultimate##0 ~n := #in~n; 122#L8 assume !(~n < 1); 134#L10 assume !(1 == ~n); 124#L13 call #t~ret4 := fibo(~n - 1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 132#fiboEXIT >#35#return; 127#L13-1 [2024-11-19 15:00:32,485 INFO L747 eck$LassoCheckResult]: Loop: 127#L13-1 call #t~ret5 := fibo(~n - 2);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 137#fiboEXIT >#35#return; 127#L13-1 [2024-11-19 15:00:32,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:32,486 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2024-11-19 15:00:32,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:32,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954189671] [2024-11-19 15:00:32,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:32,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 15:00:32,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:32,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954189671] [2024-11-19 15:00:32,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954189671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 15:00:32,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 15:00:32,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 15:00:32,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642517429] [2024-11-19 15:00:32,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 15:00:32,640 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:32,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:32,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2024-11-19 15:00:32,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:32,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918597206] [2024-11-19 15:00:32,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:32,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 15:00:32,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918597206] [2024-11-19 15:00:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918597206] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 15:00:32,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 15:00:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 15:00:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406380526] [2024-11-19 15:00:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 15:00:32,733 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-19 15:00:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 15:00:32,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 15:00:32,737 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:32,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:32,810 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-19 15:00:32,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-11-19 15:00:32,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-19 15:00:32,813 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-11-19 15:00:32,813 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-11-19 15:00:32,814 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-11-19 15:00:32,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-11-19 15:00:32,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:32,814 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-19 15:00:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-11-19 15:00:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-19 15:00:32,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 15:00:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-19 15:00:32,817 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-19 15:00:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 15:00:32,819 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-19 15:00:32,819 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-19 15:00:32,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-11-19 15:00:32,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-19 15:00:32,820 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:32,820 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:32,821 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:32,821 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:32,821 INFO L745 eck$LassoCheckResult]: Stem: 199#$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(11, 2);call #Ultimate.allocInit(12, 3); 200#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 184#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 183#$Ultimate##0 ~n := #in~n; 185#L8 assume !(~n < 1); 198#L10 assume !(1 == ~n); 187#L13 call #t~ret4 := fibo(~n - 1);< 186#$Ultimate##0 ~n := #in~n; 188#L8 assume !(~n < 1); 206#L10 assume 1 == ~n;#res := 1; 205#fiboFINAL assume true; 204#fiboEXIT >#35#return; 190#L13-1 [2024-11-19 15:00:32,821 INFO L747 eck$LassoCheckResult]: Loop: 190#L13-1 call #t~ret5 := fibo(~n - 2);< 191#$Ultimate##0 ~n := #in~n; 196#L8 assume !(~n < 1); 197#L10 assume !(1 == ~n); 189#L13 call #t~ret4 := fibo(~n - 1);< 191#$Ultimate##0 ~n := #in~n; 196#L8 assume !(~n < 1); 197#L10 assume 1 == ~n;#res := 1; 201#fiboFINAL assume true; 202#fiboEXIT >#35#return; 190#L13-1 [2024-11-19 15:00:32,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:32,822 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2024-11-19 15:00:32,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:32,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834915447] [2024-11-19 15:00:32,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:32,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:32,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:32,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834915447] [2024-11-19 15:00:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834915447] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:32,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701264086] [2024-11-19 15:00:32,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:32,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:32,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:32,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:32,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 15:00:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:32,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 15:00:32,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:33,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:33,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:33,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701264086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:33,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:33,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-19 15:00:33,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121383144] [2024-11-19 15:00:33,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:33,123 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:33,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:33,124 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2024-11-19 15:00:33,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:33,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597563624] [2024-11-19 15:00:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:33,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:33,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:33,135 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:33,281 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 [2024-11-19 15:00:33,302 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:33,302 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:33,302 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:33,302 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:33,302 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:33,303 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,303 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:33,303 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:33,303 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration3_Loop [2024-11-19 15:00:33,303 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:33,303 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:33,303 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,308 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,311 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,316 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,321 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,365 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:33,365 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:33,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,368 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) [2024-11-19 15:00:33,369 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 [2024-11-19 15:00:33,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:33,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:33,389 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:33,389 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:33,404 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 [2024-11-19 15:00:33,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,407 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) [2024-11-19 15:00:33,408 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 [2024-11-19 15:00:33,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:33,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:33,420 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:33,420 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:33,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-19 15:00:33,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,437 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) [2024-11-19 15:00:33,439 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 [2024-11-19 15:00:33,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:33,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:33,462 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:33,462 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:33,477 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 [2024-11-19 15:00:33,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,480 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) [2024-11-19 15:00:33,481 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 [2024-11-19 15:00:33,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:33,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:33,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:33,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,508 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) [2024-11-19 15:00:33,509 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 [2024-11-19 15:00:33,510 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:33,510 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:33,524 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:33,538 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 [2024-11-19 15:00:33,539 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:33,539 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:33,539 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:33,539 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:33,539 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:33,540 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,540 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:33,540 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:33,540 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration3_Loop [2024-11-19 15:00:33,540 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:33,540 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:33,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,545 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,548 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,551 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,553 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:33,594 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:33,594 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:33,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,597 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2024-11-19 15:00:33,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-19 15:00:33,599 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 [2024-11-19 15:00:33,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:33,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:33,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:33,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:33,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:33,612 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:33,612 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:33,615 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:33,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-11-19 15:00:33,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,632 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) [2024-11-19 15:00:33,635 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 [2024-11-19 15:00:33,636 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 [2024-11-19 15:00:33,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:33,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:33,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:33,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:33,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:33,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:33,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:33,651 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:33,662 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 [2024-11-19 15:00:33,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,663 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) [2024-11-19 15:00:33,664 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 [2024-11-19 15:00:33,665 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 [2024-11-19 15:00:33,675 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:33,675 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:33,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:33,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:33,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:33,676 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:33,676 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:33,677 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:33,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-19 15:00:33,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,690 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) [2024-11-19 15:00:33,691 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 [2024-11-19 15:00:33,692 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 [2024-11-19 15:00:33,703 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:33,703 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:33,703 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:33,703 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:33,703 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:33,704 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:33,704 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:33,705 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:33,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:33,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,717 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) [2024-11-19 15:00:33,718 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 [2024-11-19 15:00:33,719 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 [2024-11-19 15:00:33,729 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:33,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:33,730 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:33,730 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:33,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:33,731 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:33,731 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:33,733 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:33,738 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 15:00:33,739 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 15:00:33,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:33,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:33,741 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) [2024-11-19 15:00:33,742 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 [2024-11-19 15:00:33,742 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:33,742 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:33,742 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:33,742 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-19 15:00:33,753 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 [2024-11-19 15:00:33,754 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:33,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:33,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 15:00:33,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:33,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 15:00:33,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:33,969 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-19 15:00:33,969 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 15:00:34,192 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 128 states and 178 transitions. Complement of second has 40 states. [2024-11-19 15:00:34,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 15:00:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-19 15:00:34,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2024-11-19 15:00:34,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:34,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2024-11-19 15:00:34,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:34,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2024-11-19 15:00:34,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:34,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2024-11-19 15:00:34,202 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-19 15:00:34,206 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2024-11-19 15:00:34,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2024-11-19 15:00:34,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2024-11-19 15:00:34,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2024-11-19 15:00:34,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:34,207 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2024-11-19 15:00:34,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2024-11-19 15:00:34,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2024-11-19 15:00:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (35), 18 states have call predecessors, (35), 19 states have call successors, (35) [2024-11-19 15:00:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2024-11-19 15:00:34,230 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2024-11-19 15:00:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 15:00:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 15:00:34,231 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 11 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 15:00:34,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:34,355 INFO L93 Difference]: Finished difference Result 119 states and 163 transitions. [2024-11-19 15:00:34,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 163 transitions. [2024-11-19 15:00:34,359 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-19 15:00:34,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 158 transitions. [2024-11-19 15:00:34,367 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2024-11-19 15:00:34,368 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2024-11-19 15:00:34,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 158 transitions. [2024-11-19 15:00:34,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:34,368 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-11-19 15:00:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 158 transitions. [2024-11-19 15:00:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-11-19 15:00:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (39), 20 states have call predecessors, (39), 22 states have call successors, (39) [2024-11-19 15:00:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2024-11-19 15:00:34,382 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-19 15:00:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 15:00:34,383 INFO L425 stractBuchiCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-19 15:00:34,383 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-19 15:00:34,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 143 transitions. [2024-11-19 15:00:34,385 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-19 15:00:34,385 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:34,385 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:34,386 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:34,386 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:34,388 INFO L745 eck$LassoCheckResult]: Stem: 792#$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(11, 2);call #Ultimate.allocInit(12, 3); 793#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 778#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 779#$Ultimate##0 ~n := #in~n; 796#L8 assume !(~n < 1); 797#L10 assume !(1 == ~n); 766#L13 call #t~ret4 := fibo(~n - 1);< 765#$Ultimate##0 ~n := #in~n; 767#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 770#L13 call #t~ret4 := fibo(~n - 1);< 771#$Ultimate##0 ~n := #in~n; 824#L8 assume !(~n < 1); 822#L10 assume !(1 == ~n); 817#L13 call #t~ret4 := fibo(~n - 1);< 771#$Ultimate##0 ~n := #in~n; 824#L8 assume !(~n < 1); 822#L10 assume !(1 == ~n); 817#L13 call #t~ret4 := fibo(~n - 1);< 771#$Ultimate##0 ~n := #in~n; 825#L8 assume !(~n < 1); 823#L10 assume 1 == ~n;#res := 1; 821#fiboFINAL assume true; 820#fiboEXIT >#35#return; 803#L13-1 call #t~ret5 := fibo(~n - 2);< 818#$Ultimate##0 ~n := #in~n; 864#L8 assume ~n < 1;#res := 0; 862#fiboFINAL assume true; 861#fiboEXIT >#37#return; 859#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 858#fiboFINAL assume true; 852#fiboEXIT >#35#return; 801#L13-1 [2024-11-19 15:00:34,388 INFO L747 eck$LassoCheckResult]: Loop: 801#L13-1 call #t~ret5 := fibo(~n - 2);< 769#$Ultimate##0 ~n := #in~n; 856#L8 assume !(~n < 1); 798#L10 assume !(1 == ~n); 800#L13 call #t~ret4 := fibo(~n - 1);< 769#$Ultimate##0 ~n := #in~n; 856#L8 assume !(~n < 1); 798#L10 assume 1 == ~n;#res := 1; 802#fiboFINAL assume true; 848#fiboEXIT >#35#return; 801#L13-1 [2024-11-19 15:00:34,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:34,389 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2024-11-19 15:00:34,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:34,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329442064] [2024-11-19 15:00:34,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:34,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 15:00:34,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:34,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329442064] [2024-11-19 15:00:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329442064] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:34,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127300992] [2024-11-19 15:00:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:34,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:34,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:34,569 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:34,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-19 15:00:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:34,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 15:00:34,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:34,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 15:00:34,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-19 15:00:34,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127300992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:34,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:34,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 16 [2024-11-19 15:00:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356153434] [2024-11-19 15:00:34,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:34,931 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:34,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:34,932 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 2 times [2024-11-19 15:00:34,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:34,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244551819] [2024-11-19 15:00:34,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 15:00:34,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:34,937 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 15:00:34,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 15:00:34,938 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:34,941 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:35,040 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:35,040 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:35,040 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:35,040 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:35,040 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:35,040 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,040 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:35,040 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:35,040 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration4_Loop [2024-11-19 15:00:35,040 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:35,040 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:35,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,045 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,049 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,054 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,055 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,093 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:35,093 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:35,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:35,098 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) [2024-11-19 15:00:35,099 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 [2024-11-19 15:00:35,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:35,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:35,116 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:35,116 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:35,131 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 [2024-11-19 15:00:35,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:35,133 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) [2024-11-19 15:00:35,135 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 [2024-11-19 15:00:35,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:35,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:35,153 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:35,153 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:35,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-19 15:00:35,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:35,170 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) [2024-11-19 15:00:35,172 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 [2024-11-19 15:00:35,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:35,173 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:35,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-11-19 15:00:35,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:35,205 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) [2024-11-19 15:00:35,207 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 [2024-11-19 15:00:35,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:35,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:35,229 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:35,244 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 [2024-11-19 15:00:35,244 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:35,244 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:35,245 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:35,245 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:35,245 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:35,245 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,245 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:35,245 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:35,245 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration4_Loop [2024-11-19 15:00:35,245 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:35,245 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:35,246 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,249 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,251 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,253 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,258 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:35,293 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:35,293 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:35,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:35,294 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) [2024-11-19 15:00:35,295 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 [2024-11-19 15:00:35,296 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 [2024-11-19 15:00:35,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:35,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:35,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:35,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:35,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:35,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:35,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:35,310 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:35,324 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 [2024-11-19 15:00:35,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:35,326 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) [2024-11-19 15:00:35,329 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 [2024-11-19 15:00:35,330 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 [2024-11-19 15:00:35,342 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:35,342 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:35,342 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:35,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:35,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:35,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:35,343 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:35,345 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:35,359 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 [2024-11-19 15:00:35,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:35,362 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) [2024-11-19 15:00:35,363 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 [2024-11-19 15:00:35,364 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 [2024-11-19 15:00:35,376 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:35,376 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:35,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:35,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:35,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:35,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:35,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:35,380 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:35,394 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 [2024-11-19 15:00:35,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:35,396 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2024-11-19 15:00:35,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-11-19 15:00:35,397 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:35,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:35,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:35,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:35,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:35,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:35,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:35,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:35,410 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:35,413 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 15:00:35,413 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 15:00:35,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:35,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:35,415 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) [2024-11-19 15:00:35,416 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 [2024-11-19 15:00:35,417 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:35,417 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:35,417 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:35,417 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-19 15:00:35,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:35,429 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:35,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:35,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 15:00:35,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:35,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 15:00:35,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:35,774 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-19 15:00:35,774 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 15:00:35,955 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 [2024-11-19 15:00:36,017 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 190 states and 265 transitions. Complement of second has 37 states. [2024-11-19 15:00:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 15:00:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-19 15:00:36,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-19 15:00:36,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:36,019 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:36,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:36,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 15:00:36,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:36,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 15:00:36,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:36,362 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-19 15:00:36,362 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 15:00:36,558 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 296 states and 402 transitions. Complement of second has 29 states. [2024-11-19 15:00:36,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:36,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 15:00:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 24 transitions. [2024-11-19 15:00:36,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-19 15:00:36,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:36,561 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:36,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:36,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 15:00:36,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:36,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 15:00:36,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:36,871 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 6 loop predicates [2024-11-19 15:00:36,871 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 15:00:37,090 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 143 transitions. cyclomatic complexity: 42. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 817 states and 1129 transitions. Complement of second has 135 states. [2024-11-19 15:00:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-19 15:00:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2024-11-19 15:00:37,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-19 15:00:37,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:37,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 42 letters. Loop has 10 letters. [2024-11-19 15:00:37,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:37,094 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 20 letters. [2024-11-19 15:00:37,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:37,095 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 817 states and 1129 transitions. [2024-11-19 15:00:37,108 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2024-11-19 15:00:37,119 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 817 states to 418 states and 629 transitions. [2024-11-19 15:00:37,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2024-11-19 15:00:37,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 182 [2024-11-19 15:00:37,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 418 states and 629 transitions. [2024-11-19 15:00:37,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:37,121 INFO L218 hiAutomatonCegarLoop]: Abstraction has 418 states and 629 transitions. [2024-11-19 15:00:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states and 629 transitions. [2024-11-19 15:00:37,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 356. [2024-11-19 15:00:37,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 223 states have (on average 1.1973094170403586) internal successors, (267), 239 states have internal predecessors, (267), 75 states have call successors, (84), 46 states have call predecessors, (84), 58 states have return successors, (142), 70 states have call predecessors, (142), 71 states have call successors, (142) [2024-11-19 15:00:37,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 493 transitions. [2024-11-19 15:00:37,158 INFO L240 hiAutomatonCegarLoop]: Abstraction has 356 states and 493 transitions. [2024-11-19 15:00:37,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:37,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 15:00:37,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-19 15:00:37,159 INFO L87 Difference]: Start difference. First operand 356 states and 493 transitions. Second operand has 17 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 9 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 15:00:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:37,400 INFO L93 Difference]: Finished difference Result 521 states and 846 transitions. [2024-11-19 15:00:37,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 521 states and 846 transitions. [2024-11-19 15:00:37,408 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2024-11-19 15:00:37,426 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 521 states to 511 states and 830 transitions. [2024-11-19 15:00:37,426 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 244 [2024-11-19 15:00:37,427 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2024-11-19 15:00:37,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 511 states and 830 transitions. [2024-11-19 15:00:37,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:37,428 INFO L218 hiAutomatonCegarLoop]: Abstraction has 511 states and 830 transitions. [2024-11-19 15:00:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states and 830 transitions. [2024-11-19 15:00:37,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 430. [2024-11-19 15:00:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 263 states have (on average 1.1711026615969582) internal successors, (308), 285 states have internal predecessors, (308), 94 states have call successors, (104), 51 states have call predecessors, (104), 73 states have return successors, (237), 93 states have call predecessors, (237), 88 states have call successors, (237) [2024-11-19 15:00:37,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 649 transitions. [2024-11-19 15:00:37,487 INFO L240 hiAutomatonCegarLoop]: Abstraction has 430 states and 649 transitions. [2024-11-19 15:00:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 15:00:37,489 INFO L425 stractBuchiCegarLoop]: Abstraction has 430 states and 649 transitions. [2024-11-19 15:00:37,490 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-19 15:00:37,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 430 states and 649 transitions. [2024-11-19 15:00:37,493 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-19 15:00:37,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:37,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:37,495 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:37,495 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-19 15:00:37,496 INFO L745 eck$LassoCheckResult]: Stem: 3935#$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(11, 2);call #Ultimate.allocInit(12, 3); 3936#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 3926#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 3927#$Ultimate##0 ~n := #in~n; 3970#L8 assume !(~n < 1); 3969#L10 assume !(1 == ~n); 3965#L13 call #t~ret4 := fibo(~n - 1);< 3968#$Ultimate##0 ~n := #in~n; 3967#L8 assume !(~n < 1); 3966#L10 assume !(1 == ~n); 3961#L13 call #t~ret4 := fibo(~n - 1);< 3964#$Ultimate##0 ~n := #in~n; 3963#L8 assume !(~n < 1); 3962#L10 assume !(1 == ~n); 3958#L13 call #t~ret4 := fibo(~n - 1);< 3960#$Ultimate##0 ~n := #in~n; 3957#L8 assume !(~n < 1); 3959#L10 assume !(1 == ~n); 3941#L13 call #t~ret4 := fibo(~n - 1);< 3953#$Ultimate##0 ~n := #in~n; 3954#L8 assume !(~n < 1); 3956#L10 assume !(1 == ~n); 3942#L13 call #t~ret4 := fibo(~n - 1);< 3953#$Ultimate##0 ~n := #in~n; 3955#L8 assume !(~n < 1); 3940#L10 assume 1 == ~n;#res := 1; 3943#fiboFINAL assume true; 4023#fiboEXIT >#35#return; 4007#L13-1 call #t~ret5 := fibo(~n - 2);< 4019#$Ultimate##0 ~n := #in~n; 4295#L8 assume !(~n < 1); 4060#L10 assume !(1 == ~n); 4062#L13 call #t~ret4 := fibo(~n - 1);< 4310#$Ultimate##0 ~n := #in~n; 4316#L8 assume !(~n < 1); 4314#L10 assume !(1 == ~n); 3918#L13 call #t~ret4 := fibo(~n - 1);< 4321#$Ultimate##0 [2024-11-19 15:00:37,496 INFO L747 eck$LassoCheckResult]: Loop: 4321#$Ultimate##0 ~n := #in~n; 3950#L8 assume !(~n < 1); 3951#L10 assume !(1 == ~n); 3920#L13 call #t~ret4 := fibo(~n - 1);< 4321#$Ultimate##0 [2024-11-19 15:00:37,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:37,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1414791404, now seen corresponding path program 1 times [2024-11-19 15:00:37,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:37,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482440381] [2024-11-19 15:00:37,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:37,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:37,698 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 46 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 15:00:37,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:37,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482440381] [2024-11-19 15:00:37,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482440381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:37,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825048060] [2024-11-19 15:00:37,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:37,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:37,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:37,701 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:37,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-19 15:00:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:37,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 15:00:37,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 46 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 15:00:37,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 46 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 15:00:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825048060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:37,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:37,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-11-19 15:00:37,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686511758] [2024-11-19 15:00:37,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:37,935 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:37,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:37,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 2 times [2024-11-19 15:00:37,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:37,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039660768] [2024-11-19 15:00:37,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 15:00:37,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:37,938 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 15:00:37,938 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 15:00:37,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:37,940 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:37,977 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:37,977 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:37,977 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:37,977 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:37,978 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:37,978 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:37,978 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:37,978 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:37,978 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration5_Loop [2024-11-19 15:00:37,978 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:37,978 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:37,979 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:37,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:37,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:37,984 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:37,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:38,023 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:38,023 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:38,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,025 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) [2024-11-19 15:00:38,026 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 [2024-11-19 15:00:38,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:38,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:38,044 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:38,044 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:38,059 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 [2024-11-19 15:00:38,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,061 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) [2024-11-19 15:00:38,063 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 [2024-11-19 15:00:38,064 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:38,064 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:38,079 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:38,079 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:38,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2024-11-19 15:00:38,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,095 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) [2024-11-19 15:00:38,097 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 [2024-11-19 15:00:38,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:38,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:38,112 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:38,113 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:38,125 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 [2024-11-19 15:00:38,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,127 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) [2024-11-19 15:00:38,128 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 [2024-11-19 15:00:38,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:38,128 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:38,149 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 [2024-11-19 15:00:38,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,151 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) [2024-11-19 15:00:38,151 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 [2024-11-19 15:00:38,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:38,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:38,206 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:38,211 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 [2024-11-19 15:00:38,211 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:38,211 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:38,211 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:38,211 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:38,211 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:38,211 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,211 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:38,211 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:38,211 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration5_Loop [2024-11-19 15:00:38,212 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:38,212 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:38,213 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:38,216 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:38,218 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:38,219 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:38,221 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:38,263 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:38,263 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:38,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,265 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) [2024-11-19 15:00:38,267 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 [2024-11-19 15:00:38,268 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 [2024-11-19 15:00:38,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:38,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:38,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:38,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:38,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:38,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:38,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:38,283 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:38,298 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 [2024-11-19 15:00:38,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,301 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) [2024-11-19 15:00:38,302 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 [2024-11-19 15:00:38,303 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 [2024-11-19 15:00:38,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:38,313 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:38,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:38,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:38,313 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:38,314 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:38,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:38,315 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:38,326 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 [2024-11-19 15:00:38,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,327 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) [2024-11-19 15:00:38,328 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 [2024-11-19 15:00:38,329 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 [2024-11-19 15:00:38,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:38,339 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:38,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:38,340 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:38,340 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:38,340 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:38,340 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:38,341 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:38,351 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 [2024-11-19 15:00:38,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,353 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) [2024-11-19 15:00:38,354 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 [2024-11-19 15:00:38,355 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 [2024-11-19 15:00:38,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:38,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:38,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:38,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:38,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:38,366 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:38,366 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:38,367 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:38,377 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 [2024-11-19 15:00:38,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,379 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) [2024-11-19 15:00:38,381 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 [2024-11-19 15:00:38,382 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 [2024-11-19 15:00:38,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:38,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:38,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:38,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:38,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:38,394 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:38,394 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:38,396 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:38,399 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 15:00:38,399 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 15:00:38,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:38,400 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) [2024-11-19 15:00:38,402 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 [2024-11-19 15:00:38,403 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:38,403 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:38,403 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:38,403 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-11-19 15:00:38,414 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 [2024-11-19 15:00:38,414 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:38,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:38,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 15:00:38,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:38,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 15:00:38,566 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:38,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:38,592 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-19 15:00:38,592 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:38,656 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 446 states and 665 transitions. Complement of second has 15 states. [2024-11-19 15:00:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-19 15:00:38,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2024-11-19 15:00:38,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:38,658 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:38,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:38,718 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 15:00:38,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:38,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 15:00:38,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:38,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:38,839 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-19 15:00:38,839 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:38,897 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 446 states and 665 transitions. Complement of second has 15 states. [2024-11-19 15:00:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-19 15:00:38,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2024-11-19 15:00:38,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:38,899 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:38,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:38,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-19 15:00:38,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:39,017 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 [2024-11-19 15:00:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:39,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 15:00:39,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:39,119 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 3 loop predicates [2024-11-19 15:00:39,119 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:39,185 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 430 states and 649 transitions. cyclomatic complexity: 226. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 575 states and 798 transitions. Complement of second has 19 states. [2024-11-19 15:00:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2024-11-19 15:00:39,187 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 37 letters. Loop has 4 letters. [2024-11-19 15:00:39,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:39,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 41 letters. Loop has 4 letters. [2024-11-19 15:00:39,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:39,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 37 letters. Loop has 8 letters. [2024-11-19 15:00:39,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:39,188 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 575 states and 798 transitions. [2024-11-19 15:00:39,194 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-19 15:00:39,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 575 states to 472 states and 693 transitions. [2024-11-19 15:00:39,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2024-11-19 15:00:39,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 184 [2024-11-19 15:00:39,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 472 states and 693 transitions. [2024-11-19 15:00:39,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:39,201 INFO L218 hiAutomatonCegarLoop]: Abstraction has 472 states and 693 transitions. [2024-11-19 15:00:39,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states and 693 transitions. [2024-11-19 15:00:39,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 460. [2024-11-19 15:00:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 290 states have (on average 1.1551724137931034) internal successors, (335), 315 states have internal predecessors, (335), 94 states have call successors, (104), 51 states have call predecessors, (104), 76 states have return successors, (237), 93 states have call predecessors, (237), 88 states have call successors, (237) [2024-11-19 15:00:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 676 transitions. [2024-11-19 15:00:39,222 INFO L240 hiAutomatonCegarLoop]: Abstraction has 460 states and 676 transitions. [2024-11-19 15:00:39,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 15:00:39,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-19 15:00:39,223 INFO L87 Difference]: Start difference. First operand 460 states and 676 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (8), 7 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:39,394 INFO L93 Difference]: Finished difference Result 544 states and 818 transitions. [2024-11-19 15:00:39,394 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 544 states and 818 transitions. [2024-11-19 15:00:39,400 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-19 15:00:39,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 544 states to 527 states and 796 transitions. [2024-11-19 15:00:39,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 203 [2024-11-19 15:00:39,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 203 [2024-11-19 15:00:39,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 527 states and 796 transitions. [2024-11-19 15:00:39,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:39,408 INFO L218 hiAutomatonCegarLoop]: Abstraction has 527 states and 796 transitions. [2024-11-19 15:00:39,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states and 796 transitions. [2024-11-19 15:00:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 486. [2024-11-19 15:00:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 309 states have (on average 1.1521035598705502) internal successors, (356), 335 states have internal predecessors, (356), 102 states have call successors, (114), 58 states have call predecessors, (114), 75 states have return successors, (223), 92 states have call predecessors, (223), 95 states have call successors, (223) [2024-11-19 15:00:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 693 transitions. [2024-11-19 15:00:39,422 INFO L240 hiAutomatonCegarLoop]: Abstraction has 486 states and 693 transitions. [2024-11-19 15:00:39,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 15:00:39,423 INFO L425 stractBuchiCegarLoop]: Abstraction has 486 states and 693 transitions. [2024-11-19 15:00:39,424 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-19 15:00:39,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 486 states and 693 transitions. [2024-11-19 15:00:39,427 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-19 15:00:39,428 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:39,428 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:39,431 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:39,431 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-19 15:00:39,431 INFO L745 eck$LassoCheckResult]: Stem: 7545#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 7546#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 7524#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 7525#$Ultimate##0 ~n := #in~n; 7597#L8 assume !(~n < 1); 7595#L10 assume !(1 == ~n); 7577#L13 call #t~ret4 := fibo(~n - 1);< 7594#$Ultimate##0 ~n := #in~n; 7584#L8 assume !(~n < 1); 7581#L10 assume !(1 == ~n); 7576#L13 call #t~ret4 := fibo(~n - 1);< 7578#$Ultimate##0 ~n := #in~n; 7718#L8 assume !(~n < 1); 7717#L10 assume !(1 == ~n); 7588#L13 call #t~ret4 := fibo(~n - 1);< 7593#$Ultimate##0 ~n := #in~n; 7629#L8 assume !(~n < 1); 7628#L10 assume !(1 == ~n); 7617#L13 call #t~ret4 := fibo(~n - 1);< 7619#$Ultimate##0 ~n := #in~n; 7667#L8 assume !(~n < 1); 7659#L10 assume !(1 == ~n); 7605#L13 call #t~ret4 := fibo(~n - 1);< 7637#$Ultimate##0 ~n := #in~n; 7653#L8 assume !(~n < 1); 7652#L10 assume !(1 == ~n); 7608#L13 call #t~ret4 := fibo(~n - 1);< 7637#$Ultimate##0 ~n := #in~n; 7655#L8 assume !(~n < 1); 7656#L10 assume 1 == ~n;#res := 1; 7654#fiboFINAL assume true; 7651#fiboEXIT >#35#return; 7611#L13-1 call #t~ret5 := fibo(~n - 2);< 7634#$Ultimate##0 ~n := #in~n; 7786#L8 assume !(~n < 1); 7949#L10 assume !(1 == ~n); 7947#L13 call #t~ret4 := fibo(~n - 1);< 7948#$Ultimate##0 ~n := #in~n; 7964#L8 assume !(~n < 1); 7962#L10 assume !(1 == ~n); 7562#L13 call #t~ret4 := fibo(~n - 1);< 7559#$Ultimate##0 ~n := #in~n; 7563#L8 assume !(~n < 1); 7973#L10 assume !(1 == ~n); 7561#L13 [2024-11-19 15:00:39,431 INFO L747 eck$LassoCheckResult]: Loop: 7561#L13 call #t~ret4 := fibo(~n - 1);< 7559#$Ultimate##0 ~n := #in~n; 7563#L8 assume !(~n < 1); 7973#L10 assume !(1 == ~n); 7561#L13 [2024-11-19 15:00:39,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:39,432 INFO L85 PathProgramCache]: Analyzing trace with hash 283397944, now seen corresponding path program 2 times [2024-11-19 15:00:39,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:39,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505840624] [2024-11-19 15:00:39,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 15:00:39,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:39,443 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 15:00:39,444 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 15:00:39,681 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 15:00:39,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:39,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505840624] [2024-11-19 15:00:39,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505840624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:39,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925166061] [2024-11-19 15:00:39,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 15:00:39,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:39,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:39,685 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:39,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-19 15:00:39,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 15:00:39,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 15:00:39,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 15:00:39,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 15:00:39,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 15:00:39,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925166061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:39,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:39,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2024-11-19 15:00:39,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729120047] [2024-11-19 15:00:39,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:39,948 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:39,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:39,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1955414, now seen corresponding path program 3 times [2024-11-19 15:00:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:39,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468640782] [2024-11-19 15:00:39,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 15:00:39,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:39,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 15:00:39,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 15:00:39,951 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:39,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:40,014 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:40,014 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:40,014 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:40,014 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:40,014 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:40,014 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:40,014 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:40,014 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:40,014 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration6_Loop [2024-11-19 15:00:40,015 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:40,015 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:40,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:40,018 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:40,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:40,022 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:40,071 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:40,072 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:40,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:40,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:40,075 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) [2024-11-19 15:00:40,076 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 [2024-11-19 15:00:40,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:40,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:40,088 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:40,088 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:40,098 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 [2024-11-19 15:00:40,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:40,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:40,100 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) [2024-11-19 15:00:40,101 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 [2024-11-19 15:00:40,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:40,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:40,113 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:40,113 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:40,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2024-11-19 15:00:40,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:40,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:40,126 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2024-11-19 15:00:40,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2024-11-19 15:00:40,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:40,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:40,138 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:40,138 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:40,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2024-11-19 15:00:40,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:40,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:40,150 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2024-11-19 15:00:40,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2024-11-19 15:00:40,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:40,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:40,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:40,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:40,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:40,183 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2024-11-19 15:00:40,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2024-11-19 15:00:40,185 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:40,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:40,832 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:40,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2024-11-19 15:00:40,838 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:40,838 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:40,838 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:40,838 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:40,838 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:40,838 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:40,838 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:40,838 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:40,838 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-1.c_Iteration6_Loop [2024-11-19 15:00:40,838 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:40,838 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:40,839 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:40,845 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:40,848 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:40,850 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:40,888 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:40,888 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:40,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:40,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:40,889 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) [2024-11-19 15:00:40,890 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 [2024-11-19 15:00:40,890 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 [2024-11-19 15:00:40,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:40,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:40,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:40,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:40,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:40,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:40,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:40,905 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:40,910 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 15:00:40,910 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 15:00:40,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:40,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:40,912 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) [2024-11-19 15:00:40,913 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 [2024-11-19 15:00:40,913 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:40,914 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:40,914 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:40,914 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-19 15:00:40,924 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 [2024-11-19 15:00:40,925 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:40,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:40,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 15:00:40,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:41,019 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 [2024-11-19 15:00:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:41,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 15:00:41,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:41,141 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2024-11-19 15:00:41,141 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 486 states and 693 transitions. cyclomatic complexity: 214 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:41,181 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 486 states and 693 transitions. cyclomatic complexity: 214. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 502 states and 710 transitions. Complement of second has 18 states. [2024-11-19 15:00:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-11-19 15:00:41,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 44 letters. Loop has 4 letters. [2024-11-19 15:00:41,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:41,183 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:41,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:41,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 15:00:41,253 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:41,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-19 15:00:41,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:41,377 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2024-11-19 15:00:41,378 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 486 states and 693 transitions. cyclomatic complexity: 214 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:41,457 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 486 states and 693 transitions. cyclomatic complexity: 214. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 722 states and 1027 transitions. Complement of second has 22 states. [2024-11-19 15:00:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2024-11-19 15:00:41,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 44 letters. Loop has 4 letters. [2024-11-19 15:00:41,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:41,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 48 letters. Loop has 4 letters. [2024-11-19 15:00:41,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:41,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2024-11-19 15:00:41,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:41,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 722 states and 1027 transitions. [2024-11-19 15:00:41,466 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2024-11-19 15:00:41,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 722 states to 658 states and 955 transitions. [2024-11-19 15:00:41,474 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 218 [2024-11-19 15:00:41,474 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2024-11-19 15:00:41,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 658 states and 955 transitions. [2024-11-19 15:00:41,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:41,475 INFO L218 hiAutomatonCegarLoop]: Abstraction has 658 states and 955 transitions. [2024-11-19 15:00:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states and 955 transitions. [2024-11-19 15:00:41,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 638. [2024-11-19 15:00:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 409 states have (on average 1.1344743276283618) internal successors, (464), 442 states have internal predecessors, (464), 135 states have call successors, (165), 83 states have call predecessors, (165), 94 states have return successors, (302), 112 states have call predecessors, (302), 128 states have call successors, (302) [2024-11-19 15:00:41,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 931 transitions. [2024-11-19 15:00:41,493 INFO L240 hiAutomatonCegarLoop]: Abstraction has 638 states and 931 transitions. [2024-11-19 15:00:41,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:41,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 15:00:41,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-19 15:00:41,494 INFO L87 Difference]: Start difference. First operand 638 states and 931 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 10 states have internal predecessors, (29), 8 states have call successors, (9), 9 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:41,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:41,692 INFO L93 Difference]: Finished difference Result 307 states and 360 transitions. [2024-11-19 15:00:41,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 307 states and 360 transitions. [2024-11-19 15:00:41,695 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 15:00:41,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 307 states to 0 states and 0 transitions. [2024-11-19 15:00:41,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-19 15:00:41,695 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-19 15:00:41,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-19 15:00:41,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-19 15:00:41,695 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 15:00:41,696 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 15:00:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 15:00:41,696 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 15:00:41,697 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-19 15:00:41,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-19 15:00:41,697 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 15:00:41,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-19 15:00:41,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 03:00:41 BoogieIcfgContainer [2024-11-19 15:00:41,706 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-19 15:00:41,706 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 15:00:41,706 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 15:00:41,707 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 15:00:41,707 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:31" (3/4) ... [2024-11-19 15:00:41,709 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-19 15:00:41,710 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 15:00:41,711 INFO L158 Benchmark]: Toolchain (without parser) took 11248.45ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 94.8MB in the beginning and 129.7MB in the end (delta: -35.0MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2024-11-19 15:00:41,711 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 78.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 15:00:41,711 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.16ms. Allocated memory is still 163.6MB. Free memory was 94.8MB in the beginning and 82.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 15:00:41,712 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.92ms. Allocated memory is still 163.6MB. Free memory was 82.8MB in the beginning and 81.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 15:00:41,712 INFO L158 Benchmark]: Boogie Preprocessor took 30.47ms. Allocated memory is still 163.6MB. Free memory was 81.6MB in the beginning and 80.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 15:00:41,712 INFO L158 Benchmark]: RCFGBuilder took 229.15ms. Allocated memory is still 163.6MB. Free memory was 80.0MB in the beginning and 69.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-19 15:00:41,712 INFO L158 Benchmark]: BuchiAutomizer took 10696.12ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 69.6MB in the beginning and 129.7MB in the end (delta: -60.1MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2024-11-19 15:00:41,713 INFO L158 Benchmark]: Witness Printer took 3.96ms. Allocated memory is still 237.0MB. Free memory is still 129.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 15:00:41,714 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 117.4MB. Free memory was 78.7MB in the beginning and 78.5MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.16ms. Allocated memory is still 163.6MB. Free memory was 94.8MB in the beginning and 82.8MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.92ms. Allocated memory is still 163.6MB. Free memory was 82.8MB in the beginning and 81.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.47ms. Allocated memory is still 163.6MB. Free memory was 81.6MB in the beginning and 80.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 229.15ms. Allocated memory is still 163.6MB. Free memory was 80.0MB in the beginning and 69.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 10696.12ms. Allocated memory was 163.6MB in the beginning and 237.0MB in the end (delta: 73.4MB). Free memory was 69.6MB in the beginning and 129.7MB in the end (delta: -60.1MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Witness Printer took 3.96ms. Allocated memory is still 237.0MB. Free memory is still 129.7MB. 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 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function n and consists of 10 locations. One deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. 5 modules have a trivial ranking function, the largest among these consists of 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.6s and 7 iterations. TraceHistogramMax:10. Analysis of lassos took 5.7s. Construction of modules took 0.9s. Büchi inclusion checks took 3.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 238 StatesRemovedByMinimization, 8 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 [2, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 466 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 442 mSDsluCounter, 569 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 354 mSDsCounter, 265 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1178 IncrementalHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 265 mSolverCounterUnsat, 215 mSDtfsCounter, 1178 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp82 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp80 dnf100 smp100 tf112 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-19 15:00:41,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-19 15:00:41,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-19 15:00:42,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-19 15:00:42,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-19 15:00:42,543 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