./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml', '-i', '../sv-benchmarks/c/recursive/Fibonacci02.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(F end) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive/Fibonacci02.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-08 00:31:50,872 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 00:31:50,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-08 00:31:50,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 00:31:50,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 00:31:50,994 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 00:31:50,995 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 00:31:50,995 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 00:31:50,996 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 00:31:50,996 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 00:31:50,997 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 00:31:50,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 00:31:50,997 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 00:31:50,997 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-08 00:31:50,997 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-08 00:31:50,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 00:31:50,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 00:31:50,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 00:31:50,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 00:31:51,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 00:31:51,000 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-08 00:31:51,000 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2024-11-08 00:31:51,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 00:31:51,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 00:31:51,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 00:31:51,264 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 00:31:51,264 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 00:31:51,265 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Fibonacci02.c [2024-11-08 00:31:52,540 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 00:31:52,752 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 00:31:52,753 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Fibonacci02.c [2024-11-08 00:31:52,764 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/72dd7157d/af3c56c8aefc4f1b8e0fc563dd9be782/FLAG815e86452 [2024-11-08 00:31:53,124 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/72dd7157d/af3c56c8aefc4f1b8e0fc563dd9be782 [2024-11-08 00:31:53,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 00:31:53,130 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 00:31:53,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 00:31:53,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 00:31:53,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 00:31:53,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b320b3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53, skipping insertion in model container [2024-11-08 00:31:53,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,149 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 00:31:53,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 00:31:53,265 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 00:31:53,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 00:31:53,287 INFO L204 MainTranslator]: Completed translation [2024-11-08 00:31:53,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53 WrapperNode [2024-11-08 00:31:53,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 00:31:53,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 00:31:53,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 00:31:53,290 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 00:31:53,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,313 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-08 00:31:53,313 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 00:31:53,315 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 00:31:53,315 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 00:31:53,315 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 00:31:53,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,337 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]. [2024-11-08 00:31:53,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,342 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,343 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 00:31:53,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 00:31:53,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 00:31:53,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 00:31:53,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (1/1) ... [2024-11-08 00:31:53,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:53,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:53,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:53,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-08 00:31:53,408 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-08 00:31:53,408 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-08 00:31:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 00:31:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 00:31:53,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 00:31:53,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 00:31:53,469 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 00:31:53,471 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 00:31:53,546 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-08 00:31:53,546 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 00:31:53,553 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 00:31:53,554 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 00:31:53,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:31:53 BoogieIcfgContainer [2024-11-08 00:31:53,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 00:31:53,555 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-08 00:31:53,555 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-08 00:31:53,559 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-08 00:31:53,560 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-08 00:31:53,560 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.11 12:31:53" (1/3) ... [2024-11-08 00:31:53,561 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2926cef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.11 12:31:53, skipping insertion in model container [2024-11-08 00:31:53,561 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-08 00:31:53,561 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:31:53" (2/3) ... [2024-11-08 00:31:53,561 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2926cef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.11 12:31:53, skipping insertion in model container [2024-11-08 00:31:53,562 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-08 00:31:53,562 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:31:53" (3/3) ... [2024-11-08 00:31:53,563 INFO L332 chiAutomizerObserver]: Analyzing ICFG Fibonacci02.c [2024-11-08 00:31:53,604 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-08 00:31:53,604 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-08 00:31:53,604 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-08 00:31:53,604 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-08 00:31:53,605 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-08 00:31:53,605 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-08 00:31:53,605 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-08 00:31:53,605 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-08 00:31:53,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-11-08 00:31:53,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-08 00:31:53,624 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 00:31:53,624 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 00:31:53,629 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-08 00:31:53,629 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-08 00:31:53,629 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-08 00:31:53,630 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-11-08 00:31:53,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-08 00:31:53,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 00:31:53,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 00:31:53,631 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-08 00:31:53,631 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-08 00:31:53,638 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(14, 2);call #Ultimate.allocInit(12, 3); 12#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 := 9; 8#L29true call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 14#$Ultimate##0true [2024-11-08 00:31:53,638 INFO L747 eck$LassoCheckResult]: Loop: 14#$Ultimate##0true ~n := #in~n; 4#L17true assume !(~n < 1); 18#L19true assume !(1 == ~n); 16#L22true call #t~ret4 := fibonacci(~n - 1);< 14#$Ultimate##0true [2024-11-08 00:31:53,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:53,643 INFO L85 PathProgramCache]: Analyzing trace with hash 42783, now seen corresponding path program 1 times [2024-11-08 00:31:53,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:53,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394248628] [2024-11-08 00:31:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:53,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:53,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 00:31:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:53,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 00:31:53,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:53,762 INFO L85 PathProgramCache]: Analyzing trace with hash 927643, now seen corresponding path program 1 times [2024-11-08 00:31:53,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:53,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470691839] [2024-11-08 00:31:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:53,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 00:31:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:53,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 00:31:53,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash 856297401, now seen corresponding path program 1 times [2024-11-08 00:31:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:53,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147288965] [2024-11-08 00:31:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:53,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:53,804 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 00:31:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:53,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 00:31:53,937 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:31:53,938 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:31:53,938 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:31:53,938 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:31:53,938 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-08 00:31:53,938 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:53,938 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:31:53,939 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:31:53,939 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration1_Loop [2024-11-08 00:31:53,939 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:31:53,939 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:31:53,950 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:53,961 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:53,964 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:53,968 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:53,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:54,033 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:31:54,035 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-08 00:31:54,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-08 00:31:54,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:31:54,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:54,061 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 00:31:54,061 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 00:31:54,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-11-08 00:31:54,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-08 00:31:54,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:31:54,088 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:54,112 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 00:31:54,112 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 00:31:54,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-08 00:31:54,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-08 00:31:54,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:31:54,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:54,179 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 00:31:54,179 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 00:31:54,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-08 00:31:54,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-08 00:31:54,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:31:54,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:54,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-08 00:31:54,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-08 00:31:54,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-08 00:31:54,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:54,282 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-08 00:31:54,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-11-08 00:31:54,287 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:31:54,287 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:31:54,287 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:31:54,287 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:31:54,288 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-08 00:31:54,288 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,288 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:31:54,288 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:31:54,288 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration1_Loop [2024-11-08 00:31:54,288 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:31:54,288 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:31:54,289 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:54,292 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:54,295 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:54,299 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:54,327 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:54,384 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:31:54,387 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-08 00:31:54,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,396 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-08 00:31:54,398 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 [2024-11-08 00:31:54,412 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:31:54,412 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:31:54,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:31:54,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:31:54,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:31:54,417 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:31:54,417 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:31:54,422 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 00:31:54,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-08 00:31:54,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,439 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-08 00:31:54,442 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 [2024-11-08 00:31:54,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:31:54,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:31:54,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:31:54,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:31:54,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:31:54,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:31:54,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:31:54,461 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 00:31:54,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-08 00:31:54,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,483 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-08 00:31:54,487 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 [2024-11-08 00:31:54,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:31:54,503 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:31:54,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:31:54,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:31:54,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:31:54,504 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:31:54,504 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:31:54,506 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 00:31:54,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-11-08 00:31:54,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,526 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-08 00:31:54,530 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 [2024-11-08 00:31:54,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:31:54,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:31:54,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:31:54,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:31:54,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:31:54,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:31:54,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:31:54,549 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-08 00:31:54,554 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-08 00:31:54,556 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-08 00:31:54,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:54,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:54,561 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:54,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-08 00:31:54,564 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-08 00:31:54,564 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-08 00:31:54,564 INFO L474 LassoAnalysis]: Proved termination. [2024-11-08 00:31:54,565 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2024-11-08 00:31:54,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-08 00:31:54,585 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-08 00:31:54,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:54,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 00:31:54,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:54,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 00:31:54,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:31:54,715 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 [2024-11-08 00:31:54,717 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-11-08 00:31:54,805 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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 40 states and 53 transitions. Complement of second has 16 states. [2024-11-08 00:31:54,807 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 [2024-11-08 00:31:54,810 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) [2024-11-08 00:31:54,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-11-08 00:31:54,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-08 00:31:54,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:54,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-08 00:31:54,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:54,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-08 00:31:54,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:54,819 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 53 transitions. [2024-11-08 00:31:54,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-08 00:31:54,826 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 23 states and 31 transitions. [2024-11-08 00:31:54,827 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-11-08 00:31:54,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-11-08 00:31:54,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-11-08 00:31:54,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 00:31:54,829 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-11-08 00:31:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-11-08 00:31:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-11-08 00:31:54,849 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) [2024-11-08 00:31:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-08 00:31:54,851 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-08 00:31:54,851 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-08 00:31:54,851 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-08 00:31:54,851 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-11-08 00:31:54,852 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-08 00:31:54,852 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 00:31:54,852 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 00:31:54,853 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 00:31:54,853 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 00:31:54,854 INFO L745 eck$LassoCheckResult]: Stem: 130#$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(14, 2);call #Ultimate.allocInit(12, 3); 131#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 := 9; 120#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 132#$Ultimate##0 ~n := #in~n; 126#L17 assume !(~n < 1); 127#L19 assume !(1 == ~n); 119#L22 call #t~ret4 := fibonacci(~n - 1);< 128#$Ultimate##0 ~n := #in~n; 123#L17 assume ~n < 1;#res := 0; 124#fibonacciFINAL assume true; 129#fibonacciEXIT >#31#return; 118#L22-1 [2024-11-08 00:31:54,854 INFO L747 eck$LassoCheckResult]: Loop: 118#L22-1 call #t~ret5 := fibonacci(~n - 2);< 122#$Ultimate##0 ~n := #in~n; 137#L17 assume !(~n < 1); 136#L19 assume !(1 == ~n); 121#L22 call #t~ret4 := fibonacci(~n - 1);< 122#$Ultimate##0 ~n := #in~n; 137#L17 assume ~n < 1;#res := 0; 134#fibonacciFINAL assume true; 135#fibonacciEXIT >#31#return; 118#L22-1 [2024-11-08 00:31:54,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:54,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2073663503, now seen corresponding path program 1 times [2024-11-08 00:31:54,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:54,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854050197] [2024-11-08 00:31:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:54,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:54,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 00:31:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 00:31:54,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 00:31:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854050197] [2024-11-08 00:31:54,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854050197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 00:31:54,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 00:31:54,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 00:31:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261907320] [2024-11-08 00:31:54,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 00:31:54,969 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-08 00:31:54,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1606275375, now seen corresponding path program 1 times [2024-11-08 00:31:54,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:54,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925651584] [2024-11-08 00:31:54,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:54,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:55,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-08 00:31:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 00:31:55,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 00:31:55,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925651584] [2024-11-08 00:31:55,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925651584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 00:31:55,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 00:31:55,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 00:31:55,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522519108] [2024-11-08 00:31:55,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 00:31:55,032 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-08 00:31:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 00:31:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 00:31:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 00:31:55,035 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) [2024-11-08 00:31:55,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 00:31:55,091 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-08 00:31:55,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-11-08 00:31:55,092 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-08 00:31:55,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-11-08 00:31:55,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-11-08 00:31:55,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-11-08 00:31:55,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-11-08 00:31:55,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 00:31:55,093 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-08 00:31:55,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-11-08 00:31:55,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-08 00:31:55,094 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) [2024-11-08 00:31:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-08 00:31:55,096 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-08 00:31:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 00:31:55,097 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-08 00:31:55,097 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-08 00:31:55,097 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-11-08 00:31:55,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-08 00:31:55,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 00:31:55,097 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 00:31:55,098 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 00:31:55,098 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 00:31:55,098 INFO L745 eck$LassoCheckResult]: Stem: 202#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 203#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 191#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 201#$Ultimate##0 ~n := #in~n; 196#L17 assume !(~n < 1); 197#L19 assume !(1 == ~n); 192#L22 call #t~ret4 := fibonacci(~n - 1);< 198#$Ultimate##0 ~n := #in~n; 194#L17 assume !(~n < 1); 195#L19 assume 1 == ~n;#res := 1; 205#fibonacciFINAL assume true; 208#fibonacciEXIT >#31#return; 189#L22-1 [2024-11-08 00:31:55,098 INFO L747 eck$LassoCheckResult]: Loop: 189#L22-1 call #t~ret5 := fibonacci(~n - 2);< 193#$Ultimate##0 ~n := #in~n; 211#L17 assume !(~n < 1); 209#L19 assume !(1 == ~n); 190#L22 call #t~ret4 := fibonacci(~n - 1);< 193#$Ultimate##0 ~n := #in~n; 211#L17 assume !(~n < 1); 209#L19 assume !(1 == ~n); 190#L22 call #t~ret4 := fibonacci(~n - 1);< 193#$Ultimate##0 ~n := #in~n; 211#L17 assume !(~n < 1); 209#L19 assume 1 == ~n;#res := 1; 210#fibonacciFINAL assume true; 207#fibonacciEXIT >#31#return; 189#L22-1 call #t~ret5 := fibonacci(~n - 2);< 193#$Ultimate##0 ~n := #in~n; 211#L17 assume ~n < 1;#res := 0; 212#fibonacciFINAL assume true; 199#fibonacciEXIT >#33#return; 200#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 204#fibonacciFINAL assume true; 206#fibonacciEXIT >#31#return; 189#L22-1 [2024-11-08 00:31:55,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash -140916419, now seen corresponding path program 1 times [2024-11-08 00:31:55,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:55,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951326927] [2024-11-08 00:31:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:55,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:55,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-08 00:31:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:31:55,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 00:31:55,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951326927] [2024-11-08 00:31:55,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951326927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 00:31:55,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693477] [2024-11-08 00:31:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:55,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 00:31:55,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:55,201 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 00:31:55,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 00:31:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:55,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 00:31:55,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:55,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:31:55,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 00:31:55,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-08 00:31:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:31:55,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 00:31:55,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 00:31:55,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-08 00:31:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735331179] [2024-11-08 00:31:55,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 00:31:55,363 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-08 00:31:55,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1749360471, now seen corresponding path program 1 times [2024-11-08 00:31:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:55,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570309517] [2024-11-08 00:31:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:55,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:55,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 00:31:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:55,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 00:31:55,534 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:31:55,534 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:31:55,534 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:31:55,534 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:31:55,534 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-08 00:31:55,534 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:55,534 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:31:55,534 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:31:55,534 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration3_Loop [2024-11-08 00:31:55,534 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:31:55,534 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:31:55,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,542 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,545 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,574 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:31:55,574 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-08 00:31:55,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:55,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:55,576 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:55,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-08 00:31:55,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:31:55,578 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:55,591 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 00:31:55,591 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#in~n=3} Honda state: {fibonacci_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 00:31:55,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-08 00:31:55,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:55,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:55,604 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:55,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-08 00:31:55,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:31:55,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:55,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-08 00:31:55,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:55,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:55,633 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:55,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-08 00:31:55,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-08 00:31:55,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:55,658 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-08 00:31:55,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-08 00:31:55,676 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:31:55,677 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:31:55,677 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:31:55,677 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:31:55,677 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-08 00:31:55,677 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:55,677 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:31:55,677 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:31:55,677 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration3_Loop [2024-11-08 00:31:55,677 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:31:55,677 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:31:55,679 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,689 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,696 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,701 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,707 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:55,738 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:31:55,739 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-08 00:31:55,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:55,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:55,740 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:55,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-08 00:31:55,742 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 [2024-11-08 00:31:55,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:31:55,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:31:55,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:31:55,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:31:55,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:31:55,753 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:31:55,753 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:31:55,757 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-08 00:31:55,760 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-08 00:31:55,760 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-08 00:31:55,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:55,762 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:55,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-08 00:31:55,763 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-08 00:31:55,764 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-08 00:31:55,764 INFO L474 LassoAnalysis]: Proved termination. [2024-11-08 00:31:55,764 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2024-11-08 00:31:55,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-08 00:31:55,774 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-08 00:31:55,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:55,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 00:31:55,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:55,883 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 00:31:55,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 00:31:55,985 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-11-08 00:31:55,986 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 00:31:56,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-08 00:31:56,284 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Result 152 states and 210 transitions. Complement of second has 54 states. [2024-11-08 00:31:56,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2024-11-08 00:31:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 00:31:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 40 transitions. [2024-11-08 00:31:56,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 40 transitions. Stem has 12 letters. Loop has 22 letters. [2024-11-08 00:31:56,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:56,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 40 transitions. Stem has 34 letters. Loop has 22 letters. [2024-11-08 00:31:56,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:56,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 40 transitions. Stem has 12 letters. Loop has 44 letters. [2024-11-08 00:31:56,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:56,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152 states and 210 transitions. [2024-11-08 00:31:56,303 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2024-11-08 00:31:56,306 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152 states to 125 states and 179 transitions. [2024-11-08 00:31:56,306 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2024-11-08 00:31:56,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2024-11-08 00:31:56,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 179 transitions. [2024-11-08 00:31:56,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 00:31:56,306 INFO L218 hiAutomatonCegarLoop]: Abstraction has 125 states and 179 transitions. [2024-11-08 00:31:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 179 transitions. [2024-11-08 00:31:56,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2024-11-08 00:31:56,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 70 states have internal predecessors, (81), 25 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (35), 22 states have call predecessors, (35), 23 states have call successors, (35) [2024-11-08 00:31:56,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 142 transitions. [2024-11-08 00:31:56,324 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 142 transitions. [2024-11-08 00:31:56,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 00:31:56,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-08 00:31:56,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-08 00:31:56,329 INFO L87 Difference]: Start difference. First operand 106 states and 142 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2024-11-08 00:31:56,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 00:31:56,493 INFO L93 Difference]: Finished difference Result 135 states and 183 transitions. [2024-11-08 00:31:56,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2024-11-08 00:31:56,499 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2024-11-08 00:31:56,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 130 states and 178 transitions. [2024-11-08 00:31:56,505 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 81 [2024-11-08 00:31:56,505 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 81 [2024-11-08 00:31:56,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 178 transitions. [2024-11-08 00:31:56,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 00:31:56,505 INFO L218 hiAutomatonCegarLoop]: Abstraction has 130 states and 178 transitions. [2024-11-08 00:31:56,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states and 178 transitions. [2024-11-08 00:31:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 118. [2024-11-08 00:31:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 78 states have internal predecessors, (89), 28 states have call successors, (29), 15 states have call predecessors, (29), 16 states have return successors, (39), 24 states have call predecessors, (39), 26 states have call successors, (39) [2024-11-08 00:31:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 157 transitions. [2024-11-08 00:31:56,516 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 157 transitions. [2024-11-08 00:31:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 00:31:56,518 INFO L425 stractBuchiCegarLoop]: Abstraction has 118 states and 157 transitions. [2024-11-08 00:31:56,518 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-08 00:31:56,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 157 transitions. [2024-11-08 00:31:56,519 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2024-11-08 00:31:56,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 00:31:56,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 00:31:56,522 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 00:31:56,522 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-08 00:31:56,523 INFO L745 eck$LassoCheckResult]: Stem: 905#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 906#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 880#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 907#$Ultimate##0 ~n := #in~n; 887#L17 assume !(~n < 1); 888#L19 assume !(1 == ~n); 891#L22 call #t~ret4 := fibonacci(~n - 1);< 892#$Ultimate##0 ~n := #in~n; 949#L17 assume !(~n < 1); 948#L19 assume !(1 == ~n); 937#L22 call #t~ret4 := fibonacci(~n - 1);< 942#$Ultimate##0 ~n := #in~n; 946#L17 assume !(~n < 1); 944#L19 assume !(1 == ~n); 938#L22 call #t~ret4 := fibonacci(~n - 1);< 942#$Ultimate##0 ~n := #in~n; 946#L17 assume !(~n < 1); 944#L19 assume !(1 == ~n); 938#L22 call #t~ret4 := fibonacci(~n - 1);< 942#$Ultimate##0 ~n := #in~n; 947#L17 assume !(~n < 1); 945#L19 assume 1 == ~n;#res := 1; 943#fibonacciFINAL assume true; 941#fibonacciEXIT >#31#return; 883#L22-1 call #t~ret5 := fibonacci(~n - 2);< 940#$Ultimate##0 ~n := #in~n; 885#L17 assume ~n < 1;#res := 0; 886#fibonacciFINAL assume true; 992#fibonacciEXIT >#33#return; 990#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 987#fibonacciFINAL assume true; 980#fibonacciEXIT >#31#return; 913#L22-1 [2024-11-08 00:31:56,523 INFO L747 eck$LassoCheckResult]: Loop: 913#L22-1 call #t~ret5 := fibonacci(~n - 2);< 890#$Ultimate##0 ~n := #in~n; 986#L17 assume !(~n < 1); 911#L19 assume !(1 == ~n); 914#L22 call #t~ret4 := fibonacci(~n - 1);< 890#$Ultimate##0 ~n := #in~n; 986#L17 assume !(~n < 1); 911#L19 assume 1 == ~n;#res := 1; 915#fibonacciFINAL assume true; 916#fibonacciEXIT >#31#return; 913#L22-1 [2024-11-08 00:31:56,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash 3324437, now seen corresponding path program 1 times [2024-11-08 00:31:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:56,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471327540] [2024-11-08 00:31:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:56,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:56,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-08 00:31:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:56,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-08 00:31:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:56,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-08 00:31:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 00:31:56,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 00:31:56,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471327540] [2024-11-08 00:31:56,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471327540] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 00:31:56,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811590829] [2024-11-08 00:31:56,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:56,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 00:31:56,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:56,838 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 00:31:56,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 00:31:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:56,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 00:31:56,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 00:31:56,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 00:31:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 00:31:57,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811590829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 00:31:57,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 00:31:57,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2024-11-08 00:31:57,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532152306] [2024-11-08 00:31:57,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 00:31:57,355 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-08 00:31:57,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1745046499, now seen corresponding path program 1 times [2024-11-08 00:31:57,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:57,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024916856] [2024-11-08 00:31:57,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:57,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:57,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 00:31:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:31:57,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 00:31:57,497 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:31:57,498 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:31:57,498 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:31:57,498 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:31:57,498 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-08 00:31:57,498 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:57,498 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:31:57,498 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:31:57,498 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration4_Loop [2024-11-08 00:31:57,498 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:31:57,498 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:31:57,499 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,504 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,507 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,513 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,515 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,561 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:31:57,561 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-08 00:31:57,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:57,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:57,564 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:57,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-08 00:31:57,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:31:57,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:57,581 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 00:31:57,581 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#in~n=2} Honda state: {fibonacci_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 00:31:57,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-08 00:31:57,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:57,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:57,596 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:57,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-08 00:31:57,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:31:57,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:57,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-08 00:31:57,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:57,626 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:57,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-08 00:31:57,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-08 00:31:57,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:31:57,641 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-08 00:31:57,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-08 00:31:57,653 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:31:57,653 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:31:57,653 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:31:57,653 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:31:57,653 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-08 00:31:57,653 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:57,653 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:31:57,653 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:31:57,653 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration4_Loop [2024-11-08 00:31:57,653 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:31:57,653 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:31:57,657 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,660 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,668 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,670 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,671 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:31:57,717 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:31:57,717 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-08 00:31:57,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:57,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:57,723 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:57,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-08 00:31:57,726 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 [2024-11-08 00:31:57,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:31:57,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:31:57,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:31:57,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:31:57,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:31:57,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:31:57,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:31:57,740 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 00:31:57,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-08 00:31:57,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:57,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:57,754 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:57,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-08 00:31:57,756 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 [2024-11-08 00:31:57,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:31:57,767 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:31:57,767 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:31:57,767 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:31:57,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:31:57,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:31:57,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:31:57,772 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-08 00:31:57,775 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-08 00:31:57,775 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-08 00:31:57,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:31:57,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:57,781 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:31:57,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-08 00:31:57,782 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-08 00:31:57,782 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-08 00:31:57,782 INFO L474 LassoAnalysis]: Proved termination. [2024-11-08 00:31:57,783 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2024-11-08 00:31:57,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-08 00:31:57,795 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-08 00:31:57,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:57,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 00:31:57,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:57,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-11-08 00:31:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:58,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 00:31:58,015 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:31:58,074 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 [2024-11-08 00:31:58,074 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44 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) [2024-11-08 00:31:58,224 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44. 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 230 states and 321 transitions. Complement of second has 37 states. [2024-11-08 00:31:58,224 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 [2024-11-08 00:31:58,225 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) [2024-11-08 00:31:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-08 00:31:58,225 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-08 00:31:58,225 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:58,225 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-08 00:31:58,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:58,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 00:31:58,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:58,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 00:31:58,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:31:58,450 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 [2024-11-08 00:31:58,450 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44 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) [2024-11-08 00:31:58,584 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44. 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 300 states and 408 transitions. Complement of second has 29 states. [2024-11-08 00:31:58,588 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 [2024-11-08 00:31:58,589 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) [2024-11-08 00:31:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 24 transitions. [2024-11-08 00:31:58,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-08 00:31:58,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:58,589 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-08 00:31:58,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:58,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 00:31:58,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:58,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 00:31:58,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:31:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:31:58,967 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 [2024-11-08 00:31:58,970 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44 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) [2024-11-08 00:31:59,156 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44. 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 808 states and 1112 transitions. Complement of second has 135 states. [2024-11-08 00:31:59,157 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 [2024-11-08 00:31:59,158 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) [2024-11-08 00:31:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2024-11-08 00:31:59,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-08 00:31:59,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:59,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 42 letters. Loop has 10 letters. [2024-11-08 00:31:59,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:59,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 20 letters. [2024-11-08 00:31:59,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:31:59,160 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 808 states and 1112 transitions. [2024-11-08 00:31:59,168 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2024-11-08 00:31:59,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 808 states to 427 states and 634 transitions. [2024-11-08 00:31:59,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 166 [2024-11-08 00:31:59,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2024-11-08 00:31:59,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 427 states and 634 transitions. [2024-11-08 00:31:59,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 00:31:59,175 INFO L218 hiAutomatonCegarLoop]: Abstraction has 427 states and 634 transitions. [2024-11-08 00:31:59,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states and 634 transitions. [2024-11-08 00:31:59,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 352. [2024-11-08 00:31:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (130), 70 states have call predecessors, (130), 71 states have call successors, (130) [2024-11-08 00:31:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 479 transitions. [2024-11-08 00:31:59,195 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 479 transitions. [2024-11-08 00:31:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 00:31:59,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 00:31:59,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-08 00:31:59,196 INFO L87 Difference]: Start difference. First operand 352 states and 479 transitions. Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 00:31:59,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 00:31:59,459 INFO L93 Difference]: Finished difference Result 707 states and 1054 transitions. [2024-11-08 00:31:59,459 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 707 states and 1054 transitions. [2024-11-08 00:31:59,476 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-08 00:31:59,497 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 707 states to 676 states and 1009 transitions. [2024-11-08 00:31:59,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 296 [2024-11-08 00:31:59,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 299 [2024-11-08 00:31:59,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 676 states and 1009 transitions. [2024-11-08 00:31:59,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 00:31:59,498 INFO L218 hiAutomatonCegarLoop]: Abstraction has 676 states and 1009 transitions. [2024-11-08 00:31:59,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states and 1009 transitions. [2024-11-08 00:31:59,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 628. [2024-11-08 00:31:59,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 383 states have (on average 1.1618798955613576) internal successors, (445), 406 states have internal predecessors, (445), 151 states have call successors, (165), 76 states have call predecessors, (165), 94 states have return successors, (326), 145 states have call predecessors, (326), 141 states have call successors, (326) [2024-11-08 00:31:59,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 936 transitions. [2024-11-08 00:31:59,527 INFO L240 hiAutomatonCegarLoop]: Abstraction has 628 states and 936 transitions. [2024-11-08 00:31:59,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 00:31:59,528 INFO L425 stractBuchiCegarLoop]: Abstraction has 628 states and 936 transitions. [2024-11-08 00:31:59,528 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-08 00:31:59,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 628 states and 936 transitions. [2024-11-08 00:31:59,532 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-08 00:31:59,532 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 00:31:59,532 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 00:31:59,533 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 00:31:59,533 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-08 00:31:59,533 INFO L745 eck$LassoCheckResult]: Stem: 4310#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 4311#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 4312#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 4313#$Ultimate##0 ~n := #in~n; 4329#L17 assume !(~n < 1); 4398#L19 assume !(1 == ~n); 4394#L22 call #t~ret4 := fibonacci(~n - 1);< 4395#$Ultimate##0 ~n := #in~n; 4427#L17 assume !(~n < 1); 4414#L19 assume !(1 == ~n); 4407#L22 call #t~ret4 := fibonacci(~n - 1);< 4410#$Ultimate##0 ~n := #in~n; 4421#L17 assume !(~n < 1); 4412#L19 assume !(1 == ~n); 4402#L22 call #t~ret4 := fibonacci(~n - 1);< 4408#$Ultimate##0 ~n := #in~n; 4431#L17 assume !(~n < 1); 4430#L19 assume !(1 == ~n); 4424#L22 call #t~ret4 := fibonacci(~n - 1);< 4429#$Ultimate##0 ~n := #in~n; 4448#L17 assume !(~n < 1); 4447#L19 assume !(1 == ~n); 4416#L22 call #t~ret4 := fibonacci(~n - 1);< 4446#$Ultimate##0 ~n := #in~n; 4461#L17 assume !(~n < 1); 4460#L19 assume !(1 == ~n); 4344#L22 call #t~ret4 := fibonacci(~n - 1);< 4342#$Ultimate##0 ~n := #in~n; 4345#L17 assume !(~n < 1); 4464#L19 assume !(1 == ~n); 4343#L22 call #t~ret4 := fibonacci(~n - 1);< 4342#$Ultimate##0 ~n := #in~n; 4346#L17 assume !(~n < 1); 4536#L19 assume 1 == ~n;#res := 1; 4535#fibonacciFINAL assume true; 4530#fibonacciEXIT >#31#return; 4514#L22-1 call #t~ret5 := fibonacci(~n - 2);< 4528#$Ultimate##0 ~n := #in~n; 4777#L17 assume !(~n < 1); 4655#L19 assume !(1 == ~n); 4656#L22 call #t~ret4 := fibonacci(~n - 1);< 4707#$Ultimate##0 ~n := #in~n; 4821#L17 assume !(~n < 1); 4818#L19 assume !(1 == ~n); 4819#L22 call #t~ret4 := fibonacci(~n - 1);< 4828#$Ultimate##0 [2024-11-08 00:31:59,533 INFO L747 eck$LassoCheckResult]: Loop: 4828#$Ultimate##0 ~n := #in~n; 4850#L17 assume !(~n < 1); 4847#L19 assume !(1 == ~n); 4827#L22 call #t~ret4 := fibonacci(~n - 1);< 4828#$Ultimate##0 [2024-11-08 00:31:59,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:31:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1729544275, now seen corresponding path program 1 times [2024-11-08 00:31:59,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:31:59,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406964789] [2024-11-08 00:31:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:59,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:31:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:59,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-08 00:31:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 00:31:59,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 00:31:59,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406964789] [2024-11-08 00:31:59,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406964789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 00:31:59,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368124974] [2024-11-08 00:31:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:31:59,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 00:31:59,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:31:59,909 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 00:31:59,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 00:31:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:31:59,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 00:31:59,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 00:32:00,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 00:32:00,361 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 00:32:00,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368124974] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 00:32:00,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 00:32:00,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 21 [2024-11-08 00:32:00,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007152802] [2024-11-08 00:32:00,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 00:32:00,362 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-08 00:32:00,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:32:00,362 INFO L85 PathProgramCache]: Analyzing trace with hash 927643, now seen corresponding path program 2 times [2024-11-08 00:32:00,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:32:00,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814945429] [2024-11-08 00:32:00,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:32:00,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:32:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:32:00,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 00:32:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:32:00,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 00:32:00,417 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:32:00,417 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:32:00,417 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:32:00,417 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:32:00,417 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-08 00:32:00,418 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,418 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:32:00,418 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:32:00,418 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration5_Loop [2024-11-08 00:32:00,418 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:32:00,418 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:32:00,418 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,422 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,423 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,433 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,434 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,478 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:32:00,479 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-08 00:32:00,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:00,485 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:00,492 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:32:00,492 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:32:00,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-08 00:32:00,508 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 00:32:00,508 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 00:32:00,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-08 00:32:00,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:00,533 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:00,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-08 00:32:00,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:32:00,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:32:00,552 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 00:32:00,552 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 00:32:00,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-11-08 00:32:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:00,570 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:00,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-08 00:32:00,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:32:00,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:32:00,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-11-08 00:32:00,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:00,625 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:00,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-08 00:32:00,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-08 00:32:00,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:32:00,655 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-08 00:32:00,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-11-08 00:32:00,660 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:32:00,660 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:32:00,660 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:32:00,660 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:32:00,660 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-08 00:32:00,660 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,660 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:32:00,661 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:32:00,661 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration5_Loop [2024-11-08 00:32:00,661 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:32:00,661 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:32:00,662 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,667 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,673 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:00,701 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:32:00,704 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-08 00:32:00,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:00,706 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:00,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-08 00:32:00,709 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 [2024-11-08 00:32:00,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:32:00,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:32:00,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:32:00,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:32:00,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:32:00,723 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:32:00,723 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:32:00,724 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 00:32:00,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-11-08 00:32:00,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:00,737 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:00,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-08 00:32:00,739 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 [2024-11-08 00:32:00,751 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:32:00,751 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:32:00,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:32:00,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:32:00,751 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:32:00,752 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:32:00,752 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:32:00,753 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 00:32:00,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-11-08 00:32:00,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:00,768 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:00,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-11-08 00:32:00,770 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 [2024-11-08 00:32:00,782 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:32:00,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:32:00,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:32:00,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:32:00,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:32:00,784 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:32:00,784 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:32:00,786 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-08 00:32:00,792 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-08 00:32:00,792 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-08 00:32:00,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:00,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:00,796 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:00,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-11-08 00:32:00,804 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-08 00:32:00,804 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-08 00:32:00,804 INFO L474 LassoAnalysis]: Proved termination. [2024-11-08 00:32:00,804 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2024-11-08 00:32:00,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-11-08 00:32:00,824 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-08 00:32:00,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:32:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:00,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 00:32:00,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:01,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 00:32:01,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:32:01,120 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 [2024-11-08 00:32:01,120 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318 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) [2024-11-08 00:32:01,218 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318. 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 650 states and 958 transitions. Complement of second has 15 states. [2024-11-08 00:32:01,219 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 [2024-11-08 00:32:01,220 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) [2024-11-08 00:32:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-08 00:32:01,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2024-11-08 00:32:01,220 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:32:01,221 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-08 00:32:01,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:32:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:01,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 00:32:01,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:01,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 00:32:01,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:01,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:32:01,501 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 [2024-11-08 00:32:01,501 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318 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) [2024-11-08 00:32:01,579 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318. 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 650 states and 958 transitions. Complement of second has 15 states. [2024-11-08 00:32:01,580 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 [2024-11-08 00:32:01,582 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) [2024-11-08 00:32:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-08 00:32:01,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2024-11-08 00:32:01,582 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:32:01,582 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-08 00:32:01,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:32:01,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-11-08 00:32:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:01,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 00:32:01,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:01,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 00:32:01,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:32:01,750 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 [2024-11-08 00:32:01,752 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318 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) [2024-11-08 00:32:01,819 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318. 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 839 states and 1163 transitions. Complement of second has 19 states. [2024-11-08 00:32:01,820 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 [2024-11-08 00:32:01,821 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) [2024-11-08 00:32:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2024-11-08 00:32:01,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2024-11-08 00:32:01,822 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:32:01,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2024-11-08 00:32:01,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:32:01,823 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2024-11-08 00:32:01,823 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:32:01,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 839 states and 1163 transitions. [2024-11-08 00:32:01,834 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-08 00:32:01,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 839 states to 684 states and 996 transitions. [2024-11-08 00:32:01,843 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 241 [2024-11-08 00:32:01,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 250 [2024-11-08 00:32:01,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 684 states and 996 transitions. [2024-11-08 00:32:01,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 00:32:01,844 INFO L218 hiAutomatonCegarLoop]: Abstraction has 684 states and 996 transitions. [2024-11-08 00:32:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states and 996 transitions. [2024-11-08 00:32:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 654. [2024-11-08 00:32:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 407 states have (on average 1.1523341523341524) internal successors, (469), 432 states have internal predecessors, (469), 151 states have call successors, (165), 76 states have call predecessors, (165), 96 states have return successors, (326), 145 states have call predecessors, (326), 141 states have call successors, (326) [2024-11-08 00:32:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 960 transitions. [2024-11-08 00:32:01,878 INFO L240 hiAutomatonCegarLoop]: Abstraction has 654 states and 960 transitions. [2024-11-08 00:32:01,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 00:32:01,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 00:32:01,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-08 00:32:01,878 INFO L87 Difference]: Start difference. First operand 654 states and 960 transitions. Second operand has 21 states, 20 states have (on average 1.8) internal successors, (36), 14 states have internal predecessors, (36), 9 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 00:32:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 00:32:02,117 INFO L93 Difference]: Finished difference Result 781 states and 1180 transitions. [2024-11-08 00:32:02,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 781 states and 1180 transitions. [2024-11-08 00:32:02,125 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-08 00:32:02,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 781 states to 760 states and 1148 transitions. [2024-11-08 00:32:02,133 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 279 [2024-11-08 00:32:02,133 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 282 [2024-11-08 00:32:02,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 760 states and 1148 transitions. [2024-11-08 00:32:02,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 00:32:02,134 INFO L218 hiAutomatonCegarLoop]: Abstraction has 760 states and 1148 transitions. [2024-11-08 00:32:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states and 1148 transitions. [2024-11-08 00:32:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 702. [2024-11-08 00:32:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 437 states have (on average 1.1464530892448512) internal successors, (501), 462 states have internal predecessors, (501), 169 states have call successors, (185), 86 states have call predecessors, (185), 96 states have return successors, (336), 153 states have call predecessors, (336), 159 states have call successors, (336) [2024-11-08 00:32:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1022 transitions. [2024-11-08 00:32:02,168 INFO L240 hiAutomatonCegarLoop]: Abstraction has 702 states and 1022 transitions. [2024-11-08 00:32:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 00:32:02,169 INFO L425 stractBuchiCegarLoop]: Abstraction has 702 states and 1022 transitions. [2024-11-08 00:32:02,169 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-08 00:32:02,169 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 702 states and 1022 transitions. [2024-11-08 00:32:02,176 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-08 00:32:02,176 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-08 00:32:02,176 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-08 00:32:02,180 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 12, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 00:32:02,180 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-08 00:32:02,180 INFO L745 eck$LassoCheckResult]: Stem: 9342#$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(14, 2);call #Ultimate.allocInit(12, 3); 9343#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 := 9; 9344#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 9345#$Ultimate##0 ~n := #in~n; 9513#L17 assume !(~n < 1); 9512#L19 assume !(1 == ~n); 9490#L22 call #t~ret4 := fibonacci(~n - 1);< 9491#$Ultimate##0 ~n := #in~n; 9555#L17 assume !(~n < 1); 9553#L19 assume !(1 == ~n); 9545#L22 call #t~ret4 := fibonacci(~n - 1);< 9551#$Ultimate##0 ~n := #in~n; 9550#L17 assume !(~n < 1); 9547#L19 assume !(1 == ~n); 9509#L22 call #t~ret4 := fibonacci(~n - 1);< 9546#$Ultimate##0 ~n := #in~n; 9661#L17 assume !(~n < 1); 9657#L19 assume !(1 == ~n); 9653#L22 call #t~ret4 := fibonacci(~n - 1);< 9655#$Ultimate##0 ~n := #in~n; 9680#L17 assume !(~n < 1); 9679#L19 assume !(1 == ~n); 9319#L22 call #t~ret4 := fibonacci(~n - 1);< 9678#$Ultimate##0 ~n := #in~n; 9723#L17 assume !(~n < 1); 9721#L19 assume !(1 == ~n); 9674#L22 call #t~ret4 := fibonacci(~n - 1);< 9698#$Ultimate##0 ~n := #in~n; 9792#L17 assume !(~n < 1); 9777#L19 assume !(1 == ~n); 9694#L22 call #t~ret4 := fibonacci(~n - 1);< 9761#$Ultimate##0 ~n := #in~n; 9819#L17 assume !(~n < 1); 9815#L19 assume !(1 == ~n); 9693#L22 call #t~ret4 := fibonacci(~n - 1);< 9761#$Ultimate##0 ~n := #in~n; 9822#L17 assume !(~n < 1); 9820#L19 assume 1 == ~n;#res := 1; 9816#fibonacciFINAL assume true; 9808#fibonacciEXIT >#31#return; 9715#L22-1 call #t~ret5 := fibonacci(~n - 2);< 9726#$Ultimate##0 ~n := #in~n; 9846#L17 assume !(~n < 1); 9909#L19 assume !(1 == ~n); 9368#L22 call #t~ret4 := fibonacci(~n - 1);< 9374#$Ultimate##0 ~n := #in~n; 9375#L17 assume !(~n < 1); 9973#L19 assume !(1 == ~n); 9354#L22 call #t~ret4 := fibonacci(~n - 1);< 9376#$Ultimate##0 ~n := #in~n; 9377#L17 assume !(~n < 1); 9972#L19 assume !(1 == ~n); 9355#L22 [2024-11-08 00:32:02,180 INFO L747 eck$LassoCheckResult]: Loop: 9355#L22 call #t~ret4 := fibonacci(~n - 1);< 9376#$Ultimate##0 ~n := #in~n; 9377#L17 assume !(~n < 1); 9972#L19 assume !(1 == ~n); 9355#L22 [2024-11-08 00:32:02,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:32:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1537328375, now seen corresponding path program 2 times [2024-11-08 00:32:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:32:02,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081222754] [2024-11-08 00:32:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:32:02,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:32:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:02,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-08 00:32:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:02,530 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 213 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 00:32:02,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 00:32:02,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081222754] [2024-11-08 00:32:02,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081222754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 00:32:02,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601818775] [2024-11-08 00:32:02,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 00:32:02,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 00:32:02,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:02,534 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 00:32:02,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-08 00:32:02,577 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 00:32:02,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 00:32:02,578 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 00:32:02,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 213 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 00:32:02,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 00:32:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 213 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 00:32:02,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601818775] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 00:32:02,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 00:32:02,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2024-11-08 00:32:02,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170040673] [2024-11-08 00:32:02,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 00:32:02,912 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-08 00:32:02,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:32:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1817383, now seen corresponding path program 3 times [2024-11-08 00:32:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 00:32:02,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458099162] [2024-11-08 00:32:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 00:32:02,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 00:32:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:32:02,916 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 00:32:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 00:32:02,919 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 00:32:02,994 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:32:02,994 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:32:02,994 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:32:02,994 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:32:02,995 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-08 00:32:02,995 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:02,995 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:32:02,995 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:32:02,995 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration6_Loop [2024-11-08 00:32:02,995 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:32:02,995 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:32:02,995 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:02,997 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:03,001 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:03,016 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:03,080 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:32:03,080 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-08 00:32:03,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:03,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:03,085 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:03,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-11-08 00:32:03,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:32:03,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:32:03,105 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 00:32:03,105 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 00:32:03,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-11-08 00:32:03,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:03,118 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:03,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-11-08 00:32:03,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:32:03,122 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:32:03,137 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-08 00:32:03,137 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-08 00:32:03,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2024-11-08 00:32:03,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:03,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:03,154 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:03,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-11-08 00:32:03,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-08 00:32:03,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:32:03,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-11-08 00:32:03,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:03,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:03,198 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:03,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-11-08 00:32:03,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-08 00:32:03,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-08 00:32:04,416 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-08 00:32:04,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2024-11-08 00:32:04,421 INFO L204 LassoAnalysis]: Preferences: [2024-11-08 00:32:04,421 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-08 00:32:04,421 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-08 00:32:04,421 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-08 00:32:04,421 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-08 00:32:04,422 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:04,422 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-08 00:32:04,422 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-08 00:32:04,422 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration6_Loop [2024-11-08 00:32:04,422 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-08 00:32:04,422 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-08 00:32:04,422 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:04,424 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:04,428 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:04,435 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-08 00:32:04,472 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-08 00:32:04,473 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-08 00:32:04,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:04,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:04,475 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:04,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-11-08 00:32:04,477 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 [2024-11-08 00:32:04,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:32:04,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:32:04,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:32:04,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:32:04,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:32:04,491 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:32:04,491 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:32:04,492 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 00:32:04,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2024-11-08 00:32:04,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:04,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:04,516 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:04,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-11-08 00:32:04,521 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 [2024-11-08 00:32:04,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:32:04,539 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:32:04,539 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:32:04,539 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:32:04,539 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:32:04,540 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:32:04,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:32:04,545 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-08 00:32:04,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2024-11-08 00:32:04,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:04,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:04,560 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:04,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-11-08 00:32:04,563 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 [2024-11-08 00:32:04,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-08 00:32:04,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-08 00:32:04,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-08 00:32:04,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-08 00:32:04,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-08 00:32:04,578 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-08 00:32:04,578 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-08 00:32:04,579 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-08 00:32:04,581 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-08 00:32:04,581 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-08 00:32:04,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-08 00:32:04,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 00:32:04,583 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-08 00:32:04,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-11-08 00:32:04,586 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-08 00:32:04,586 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-08 00:32:04,586 INFO L474 LassoAnalysis]: Proved termination. [2024-11-08 00:32:04,586 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2024-11-08 00:32:04,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-11-08 00:32:04,608 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-08 00:32:04,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:32:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:04,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 00:32:04,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:04,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 00:32:04,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:32:04,764 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 [2024-11-08 00:32:04,765 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 702 states and 1022 transitions. cyclomatic complexity: 330 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) [2024-11-08 00:32:04,806 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 702 states and 1022 transitions. cyclomatic complexity: 330. 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 724 states and 1045 transitions. Complement of second has 18 states. [2024-11-08 00:32:04,807 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 [2024-11-08 00:32:04,807 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) [2024-11-08 00:32:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-11-08 00:32:04,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 52 letters. Loop has 4 letters. [2024-11-08 00:32:04,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:32:04,808 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-08 00:32:04,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 00:32:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:04,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 00:32:04,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:04,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2024-11-08 00:32:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 00:32:04,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 00:32:04,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 00:32:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 00:32:05,005 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 [2024-11-08 00:32:05,005 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 702 states and 1022 transitions. cyclomatic complexity: 330 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) [2024-11-08 00:32:05,072 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 702 states and 1022 transitions. cyclomatic complexity: 330. 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 944 states and 1356 transitions. Complement of second has 22 states. [2024-11-08 00:32:05,072 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 [2024-11-08 00:32:05,072 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) [2024-11-08 00:32:05,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2024-11-08 00:32:05,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 52 letters. Loop has 4 letters. [2024-11-08 00:32:05,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:32:05,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 56 letters. Loop has 4 letters. [2024-11-08 00:32:05,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:32:05,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 52 letters. Loop has 8 letters. [2024-11-08 00:32:05,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-08 00:32:05,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 944 states and 1356 transitions. [2024-11-08 00:32:05,082 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-08 00:32:05,091 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 944 states to 874 states and 1278 transitions. [2024-11-08 00:32:05,091 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 282 [2024-11-08 00:32:05,091 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 310 [2024-11-08 00:32:05,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 874 states and 1278 transitions. [2024-11-08 00:32:05,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-08 00:32:05,092 INFO L218 hiAutomatonCegarLoop]: Abstraction has 874 states and 1278 transitions. [2024-11-08 00:32:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states and 1278 transitions. [2024-11-08 00:32:05,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 854. [2024-11-08 00:32:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 537 states have (on average 1.1340782122905029) internal successors, (609), 569 states have internal predecessors, (609), 202 states have call successors, (236), 111 states have call predecessors, (236), 115 states have return successors, (409), 173 states have call predecessors, (409), 192 states have call successors, (409) [2024-11-08 00:32:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1254 transitions. [2024-11-08 00:32:05,111 INFO L240 hiAutomatonCegarLoop]: Abstraction has 854 states and 1254 transitions. [2024-11-08 00:32:05,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 00:32:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 00:32:05,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-08 00:32:05,112 INFO L87 Difference]: Start difference. First operand 854 states and 1254 transitions. Second operand has 21 states, 20 states have (on average 1.75) internal successors, (35), 12 states have internal predecessors, (35), 10 states have call successors, (11), 11 states have call predecessors, (11), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-08 00:32:05,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 00:32:05,350 INFO L93 Difference]: Finished difference Result 471 states and 558 transitions. [2024-11-08 00:32:05,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 471 states and 558 transitions. [2024-11-08 00:32:05,354 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-08 00:32:05,354 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 471 states to 0 states and 0 transitions. [2024-11-08 00:32:05,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-08 00:32:05,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-08 00:32:05,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-08 00:32:05,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-08 00:32:05,354 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 00:32:05,355 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 00:32:05,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 00:32:05,355 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 00:32:05,355 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-08 00:32:05,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-08 00:32:05,355 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-08 00:32:05,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-08 00:32:05,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.11 12:32:05 BoogieIcfgContainer [2024-11-08 00:32:05,362 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-08 00:32:05,363 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 00:32:05,363 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 00:32:05,363 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 00:32:05,367 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:31:53" (3/4) ... [2024-11-08 00:32:05,371 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 00:32:05,372 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 00:32:05,373 INFO L158 Benchmark]: Toolchain (without parser) took 12243.14ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 92.2MB in the beginning and 153.1MB in the end (delta: -60.9MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2024-11-08 00:32:05,373 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 117.4MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 00:32:05,373 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.69ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 81.9MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-08 00:32:05,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.69ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 00:32:05,374 INFO L158 Benchmark]: Boogie Preprocessor took 29.46ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 79.9MB in the end (delta: 899.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 00:32:05,377 INFO L158 Benchmark]: RCFGBuilder took 209.50ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 71.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-08 00:32:05,377 INFO L158 Benchmark]: BuchiAutomizer took 11806.89ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 70.9MB in the beginning and 153.2MB in the end (delta: -82.3MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. [2024-11-08 00:32:05,378 INFO L158 Benchmark]: Witness Printer took 9.69ms. Allocated memory is still 234.9MB. Free memory was 153.2MB in the beginning and 153.1MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 00:32:05,379 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 117.4MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 157.69ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 81.9MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.69ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.46ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 79.9MB in the end (delta: 899.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 209.50ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 71.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 11806.89ms. Allocated memory was 117.4MB in the beginning and 234.9MB in the end (delta: 117.4MB). Free memory was 70.9MB in the beginning and 153.2MB in the end (delta: -82.3MB). Peak memory consumption was 35.6MB. Max. memory is 16.1GB. * Witness Printer took 9.69ms. Allocated memory is still 234.9MB. Free memory was 153.2MB in the beginning and 153.1MB in the end (delta: 69.3kB). 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 11 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 23 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.7s and 7 iterations. TraceHistogramMax:12. Analysis of lassos took 6.8s. 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, 265 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: 8/26 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 596 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 571 mSDsluCounter, 658 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 425 mSDsCounter, 357 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1357 IncrementalHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 357 mSolverCounterUnsat, 233 mSDtfsCounter, 1357 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: 34ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-08 00:32:05,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-08 00:32:05,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-08 00:32:05,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 00:32:06,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 00:32:06,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE