./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 15:00:03,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 15:00:03,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-19 15:00:03,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 15:00:03,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 15:00:04,001 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 15:00:04,002 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 15:00:04,002 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 15:00:04,003 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 15:00:04,004 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 15:00:04,005 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 15:00:04,005 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 15:00:04,006 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 15:00:04,007 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-19 15:00:04,011 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-19 15:00:04,011 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-19 15:00:04,012 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-19 15:00:04,012 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-19 15:00:04,012 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-19 15:00:04,013 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 15:00:04,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-19 15:00:04,013 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 15:00:04,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 15:00:04,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 15:00:04,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 15:00:04,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-19 15:00:04,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-19 15:00:04,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-19 15:00:04,016 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 15:00:04,016 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 15:00:04,016 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 15:00:04,016 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 15:00:04,017 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-19 15:00:04,017 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 15:00:04,017 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 15:00:04,018 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 15:00:04,019 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 15:00:04,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 15:00:04,020 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-19 15:00:04,020 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 [2024-11-19 15:00:04,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 15:00:04,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 15:00:04,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 15:00:04,345 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 15:00:04,346 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 15:00:04,348 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2024-11-19 15:00:05,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 15:00:06,003 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 15:00:06,003 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2024-11-19 15:00:06,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261060aa6/c6f9d7957229435897e32d4c6a8ed776/FLAG8677caf5c [2024-11-19 15:00:06,021 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/261060aa6/c6f9d7957229435897e32d4c6a8ed776 [2024-11-19 15:00:06,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 15:00:06,025 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 15:00:06,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 15:00:06,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 15:00:06,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 15:00:06,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d853e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06, skipping insertion in model container [2024-11-19 15:00:06,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,049 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 15:00:06,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 15:00:06,238 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 15:00:06,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 15:00:06,263 INFO L204 MainTranslator]: Completed translation [2024-11-19 15:00:06,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06 WrapperNode [2024-11-19 15:00:06,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 15:00:06,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 15:00:06,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 15:00:06,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 15:00:06,273 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,292 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-19 15:00:06,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 15:00:06,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 15:00:06,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 15:00:06,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 15:00:06,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,313 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-19 15:00:06,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,313 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,315 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,317 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,318 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 15:00:06,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 15:00:06,322 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 15:00:06,322 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 15:00:06,323 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (1/1) ... [2024-11-19 15:00:06,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:06,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:06,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:06,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-19 15:00:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 15:00:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 15:00:06,414 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-19 15:00:06,414 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-19 15:00:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-19 15:00:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-19 15:00:06,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 15:00:06,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 15:00:06,467 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 15:00:06,469 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 15:00:06,622 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-19 15:00:06,623 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 15:00:06,639 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 15:00:06,640 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 15:00:06,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:06 BoogieIcfgContainer [2024-11-19 15:00:06,642 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 15:00:06,643 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-19 15:00:06,643 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-19 15:00:06,647 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-19 15:00:06,648 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 15:00:06,648 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 03:00:06" (1/3) ... [2024-11-19 15:00:06,649 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8934309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 03:00:06, skipping insertion in model container [2024-11-19 15:00:06,649 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 15:00:06,650 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:00:06" (2/3) ... [2024-11-19 15:00:06,650 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@8934309 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 03:00:06, skipping insertion in model container [2024-11-19 15:00:06,651 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-19 15:00:06,651 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:06" (3/3) ... [2024-11-19 15:00:06,653 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-1.c [2024-11-19 15:00:06,705 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-19 15:00:06,705 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-19 15:00:06,706 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-19 15:00:06,706 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-19 15:00:06,706 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-19 15:00:06,706 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-19 15:00:06,706 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-19 15:00:06,706 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-19 15:00:06,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 15:00:06,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-19 15:00:06,725 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:06,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:06,730 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-19 15:00:06,730 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:06,730 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-19 15:00:06,730 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 15:00:06,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-19 15:00:06,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:06,733 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:06,733 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-19 15:00:06,734 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:06,739 INFO L745 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2024-11-19 15:00:06,739 INFO L747 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2024-11-19 15:00:06,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:06,745 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2024-11-19 15:00:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:06,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779166525] [2024-11-19 15:00:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:06,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:06,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:06,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:06,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:06,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2024-11-19 15:00:06,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:06,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188853341] [2024-11-19 15:00:06,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:06,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:06,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:06,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:06,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:06,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2024-11-19 15:00:06,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:06,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388854311] [2024-11-19 15:00:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:06,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:06,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:06,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:07,173 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:07,174 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:07,174 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:07,174 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:07,174 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:07,174 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,174 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:07,174 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:07,174 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration1_Loop [2024-11-19 15:00:07,174 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:07,175 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:07,189 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,200 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,203 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,206 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,209 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,211 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,214 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,216 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,308 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:07,309 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:07,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-19 15:00:07,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:07,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:07,336 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:07,336 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:07,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:07,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-19 15:00:07,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:07,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:07,372 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:07,372 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:07,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:07,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-19 15:00:07,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:07,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:07,404 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:07,404 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:07,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:07,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-19 15:00:07,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:07,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:07,444 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:07,444 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:07,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-19 15:00:07,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,467 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-19 15:00:07,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:07,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:07,484 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:07,485 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:07,496 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-19 15:00:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-19 15:00:07,500 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:07,500 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:07,512 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:07,512 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:07,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:07,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,525 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-19 15:00:07,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:07,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:07,539 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:07,539 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:07,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:07,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-19 15:00:07,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:07,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:07,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-19 15:00:07,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,583 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-19 15:00:07,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:07,585 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:07,637 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:07,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:07,646 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:07,646 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:07,646 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:07,646 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:07,646 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:07,646 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,646 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:07,646 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:07,646 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration1_Loop [2024-11-19 15:00:07,647 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:07,647 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:07,648 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,651 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,654 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,658 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,661 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,673 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,676 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:07,740 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:07,744 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:07,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,756 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-19 15:00:07,759 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:07,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:07,769 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:07,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:07,770 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:07,770 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:07,771 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:07,771 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:07,773 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:07,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-19 15:00:07,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,790 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-19 15:00:07,793 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:07,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:07,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:07,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:07,804 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:07,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:07,804 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:07,804 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:07,806 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:07,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-19 15:00:07,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-19 15:00:07,819 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:07,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:07,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:07,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:07,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:07,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:07,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:07,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:07,832 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:07,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:07,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,844 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-19 15:00:07,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:07,855 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:07,855 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:07,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:07,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:07,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:07,856 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:07,856 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:07,858 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:07,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-19 15:00:07,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,870 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-19 15:00:07,871 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:07,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:07,881 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:07,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:07,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:07,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:07,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:07,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:07,884 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:07,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:07,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,899 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-19 15:00:07,902 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:07,912 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:07,912 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:07,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:07,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:07,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:07,914 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:07,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:07,918 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:07,921 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 15:00:07,921 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 15:00:07,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:07,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:07,946 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:07,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-19 15:00:07,948 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:07,949 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:07,949 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:07,950 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2024-11-19 15:00:07,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:07,965 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:07,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:08,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 15:00:08,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:08,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 15:00:08,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:08,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-19 15:00:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:08,225 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2024-11-19 15:00:08,227 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 15:00:08,389 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 107 transitions. Complement of second has 28 states. [2024-11-19 15:00:08,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:08,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 15:00:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2024-11-19 15:00:08,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-19 15:00:08,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:08,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2024-11-19 15:00:08,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:08,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 16 letters. [2024-11-19 15:00:08,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:08,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 107 transitions. [2024-11-19 15:00:08,407 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-19 15:00:08,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 55 states and 75 transitions. [2024-11-19 15:00:08,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2024-11-19 15:00:08,414 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2024-11-19 15:00:08,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 75 transitions. [2024-11-19 15:00:08,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:08,415 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 75 transitions. [2024-11-19 15:00:08,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 75 transitions. [2024-11-19 15:00:08,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-19 15:00:08,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-19 15:00:08,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-19 15:00:08,439 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-19 15:00:08,440 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-19 15:00:08,440 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-19 15:00:08,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2024-11-19 15:00:08,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-19 15:00:08,441 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:08,441 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:08,443 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:08,443 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:08,443 INFO L745 eck$LassoCheckResult]: Stem: 232#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 219#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 214#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 213#$Ultimate##0 ~n := #in~n; 215#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 208#L15 call #t~ret4 := fibo2(~n - 1);< 230#$Ultimate##0 ~n := #in~n; 235#L20 assume !(~n < 1); 236#L22 assume !(1 == ~n); 200#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#48#return; 207#L25-1 [2024-11-19 15:00:08,443 INFO L747 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret7 := fibo1(~n - 2);< 212#$Ultimate##0 ~n := #in~n; 237#L10 assume !(~n < 1); 238#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 241#$Ultimate##0 ~n := #in~n; 240#L20 assume !(~n < 1); 239#L22 assume !(1 == ~n); 220#L25 call #t~ret6 := fibo1(~n - 1);< 212#$Ultimate##0 ~n := #in~n; 237#L10 assume ~n < 1;#res := 0; 233#fibo1FINAL assume true; 234#fibo1EXIT >#48#return; 207#L25-1 [2024-11-19 15:00:08,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:08,444 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2024-11-19 15:00:08,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:08,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667350310] [2024-11-19 15:00:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:08,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 15:00:08,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:08,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667350310] [2024-11-19 15:00:08,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667350310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 15:00:08,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 15:00:08,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 15:00:08,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661246377] [2024-11-19 15:00:08,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 15:00:08,580 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:08,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2024-11-19 15:00:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:08,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541877768] [2024-11-19 15:00:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:08,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 15:00:08,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:08,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541877768] [2024-11-19 15:00:08,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541877768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 15:00:08,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 15:00:08,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 15:00:08,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470323926] [2024-11-19 15:00:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 15:00:08,664 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-19 15:00:08,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:08,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 15:00:08,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 15:00:08,667 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:08,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:08,738 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-11-19 15:00:08,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2024-11-19 15:00:08,741 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-19 15:00:08,743 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 60 states and 79 transitions. [2024-11-19 15:00:08,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-11-19 15:00:08,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2024-11-19 15:00:08,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 79 transitions. [2024-11-19 15:00:08,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:08,744 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-19 15:00:08,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 79 transitions. [2024-11-19 15:00:08,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-19 15:00:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 44 states have internal predecessors, (49), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-19 15:00:08,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-11-19 15:00:08,750 INFO L240 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-19 15:00:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 15:00:08,751 INFO L425 stractBuchiCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-19 15:00:08,751 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-19 15:00:08,751 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 79 transitions. [2024-11-19 15:00:08,753 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-19 15:00:08,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:08,755 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:08,756 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:08,756 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:08,756 INFO L745 eck$LassoCheckResult]: Stem: 362#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 344#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 345#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 346#$Ultimate##0 ~n := #in~n; 347#L10 assume !(~n < 1); 382#L12 assume !(1 == ~n); 338#L15 call #t~ret4 := fibo2(~n - 1);< 361#$Ultimate##0 ~n := #in~n; 368#L20 assume !(~n < 1); 369#L22 assume !(1 == ~n); 329#L25 call #t~ret6 := fibo1(~n - 1);< 348#$Ultimate##0 ~n := #in~n; 349#L10 assume !(~n < 1); 358#L12 assume 1 == ~n;#res := 1; 370#fibo1FINAL assume true; 366#fibo1EXIT >#48#return; 335#L25-1 [2024-11-19 15:00:08,757 INFO L747 eck$LassoCheckResult]: Loop: 335#L25-1 call #t~ret7 := fibo1(~n - 2);< 342#$Ultimate##0 ~n := #in~n; 371#L10 assume !(~n < 1); 352#L12 assume !(1 == ~n); 340#L15 call #t~ret4 := fibo2(~n - 1);< 375#$Ultimate##0 ~n := #in~n; 374#L20 assume !(~n < 1); 372#L22 assume !(1 == ~n); 336#L25 call #t~ret6 := fibo1(~n - 1);< 342#$Ultimate##0 ~n := #in~n; 371#L10 assume !(~n < 1); 352#L12 assume 1 == ~n;#res := 1; 353#fibo1FINAL assume true; 365#fibo1EXIT >#48#return; 335#L25-1 [2024-11-19 15:00:08,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2024-11-19 15:00:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:08,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563789744] [2024-11-19 15:00:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:08,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:08,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:08,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563789744] [2024-11-19 15:00:08,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563789744] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:08,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375504641] [2024-11-19 15:00:08,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:08,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:08,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:08,896 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:08,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-19 15:00:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:08,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 15:00:08,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:08,974 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:09,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375504641] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:09,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:09,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2024-11-19 15:00:09,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790378154] [2024-11-19 15:00:09,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:09,105 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:09,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:09,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2024-11-19 15:00:09,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:09,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755300213] [2024-11-19 15:00:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:09,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:09,113 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:09,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:09,332 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:09,333 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:09,333 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:09,333 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:09,333 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:09,333 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,334 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:09,334 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:09,334 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration3_Loop [2024-11-19 15:00:09,334 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:09,334 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:09,335 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,342 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,345 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,347 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,357 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,414 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:09,414 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:09,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,416 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-19 15:00:09,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:09,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:09,435 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:09,435 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:09,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-19 15:00:09,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,453 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-19 15:00:09,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:09,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:09,474 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:09,474 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:09,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:09,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,492 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-19 15:00:09,494 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:09,494 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:09,506 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:09,506 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:09,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:09,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,519 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-19 15:00:09,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:09,521 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:09,531 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:09,532 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:09,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:09,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,547 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-19 15:00:09,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:09,550 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:09,561 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:09,561 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:09,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:09,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,573 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-19 15:00:09,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:09,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:09,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-11-19 15:00:09,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,603 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-19 15:00:09,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:09,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:09,624 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:09,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:09,640 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:09,640 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:09,640 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:09,640 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:09,640 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:09,640 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,640 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:09,640 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:09,640 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration3_Loop [2024-11-19 15:00:09,640 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:09,640 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:09,641 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,646 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,649 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,654 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,659 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,661 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,663 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:09,714 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:09,714 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:09,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,717 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-19 15:00:09,719 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:09,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:09,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:09,731 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:09,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:09,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:09,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:09,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:09,736 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:09,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-19 15:00:09,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,753 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-19 15:00:09,755 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:09,767 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:09,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:09,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:09,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:09,768 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:09,769 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:09,769 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:09,772 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:09,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:09,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,788 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-19 15:00:09,790 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:09,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:09,803 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:09,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:09,803 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:09,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:09,804 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:09,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:09,807 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:09,821 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-11-19 15:00:09,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,824 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-19 15:00:09,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:09,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:09,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:09,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:09,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:09,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:09,839 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:09,839 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:09,840 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:09,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-11-19 15:00:09,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,857 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,860 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:09,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-19 15:00:09,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:09,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:09,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:09,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:09,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:09,876 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:09,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:09,879 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:09,882 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 15:00:09,882 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 15:00:09,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:09,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:09,885 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:09,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-19 15:00:09,887 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:09,887 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:09,887 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:09,887 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2024-11-19 15:00:09,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:09,903 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:09,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:09,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 15:00:09,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:10,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 15:00:10,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:10,192 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-19 15:00:10,192 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 15:00:10,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 206 states and 282 transitions. Complement of second has 48 states. [2024-11-19 15:00:10,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 15:00:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 79 transitions. [2024-11-19 15:00:10,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 14 letters. [2024-11-19 15:00:10,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:10,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 30 letters. Loop has 14 letters. [2024-11-19 15:00:10,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:10,645 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 28 letters. [2024-11-19 15:00:10,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:10,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 282 transitions. [2024-11-19 15:00:10,651 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-19 15:00:10,658 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 182 states and 254 transitions. [2024-11-19 15:00:10,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 112 [2024-11-19 15:00:10,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2024-11-19 15:00:10,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2024-11-19 15:00:10,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:10,660 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2024-11-19 15:00:10,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2024-11-19 15:00:10,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 154. [2024-11-19 15:00:10,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 96 states have (on average 1.28125) internal successors, (123), 104 states have internal predecessors, (123), 35 states have call successors, (36), 19 states have call predecessors, (36), 23 states have return successors, (52), 30 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-19 15:00:10,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2024-11-19 15:00:10,684 INFO L240 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2024-11-19 15:00:10,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:10,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 15:00:10,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-19 15:00:10,685 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-19 15:00:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:10,805 INFO L93 Difference]: Finished difference Result 183 states and 249 transitions. [2024-11-19 15:00:10,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 249 transitions. [2024-11-19 15:00:10,808 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-19 15:00:10,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 245 transitions. [2024-11-19 15:00:10,812 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2024-11-19 15:00:10,812 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2024-11-19 15:00:10,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 245 transitions. [2024-11-19 15:00:10,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:10,812 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 245 transitions. [2024-11-19 15:00:10,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 245 transitions. [2024-11-19 15:00:10,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2024-11-19 15:00:10,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 111 states have internal predecessors, (129), 38 states have call successors, (40), 20 states have call predecessors, (40), 25 states have return successors, (58), 33 states have call predecessors, (58), 36 states have call successors, (58) [2024-11-19 15:00:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 227 transitions. [2024-11-19 15:00:10,825 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 227 transitions. [2024-11-19 15:00:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 15:00:10,829 INFO L425 stractBuchiCegarLoop]: Abstraction has 165 states and 227 transitions. [2024-11-19 15:00:10,829 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-19 15:00:10,830 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 227 transitions. [2024-11-19 15:00:10,832 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-19 15:00:10,832 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:10,832 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:10,833 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:10,833 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:10,833 INFO L745 eck$LassoCheckResult]: Stem: 1272#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 1243#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1276#$Ultimate##0 ~n := #in~n; 1267#L10 assume !(~n < 1); 1260#L12 assume !(1 == ~n); 1229#L15 call #t~ret4 := fibo2(~n - 1);< 1268#$Ultimate##0 ~n := #in~n; 1270#L20 assume !(~n < 1); 1271#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1245#$Ultimate##0 ~n := #in~n; 1305#L10 assume !(~n < 1); 1310#L12 assume !(1 == ~n); 1312#L15 call #t~ret4 := fibo2(~n - 1);< 1318#$Ultimate##0 ~n := #in~n; 1321#L20 assume ~n < 1;#res := 0; 1319#fibo2FINAL assume true; 1317#fibo2EXIT >#52#return; 1315#L15-1 call #t~ret5 := fibo2(~n - 2);< 1316#$Ultimate##0 ~n := #in~n; 1323#L20 assume ~n < 1;#res := 0; 1320#fibo2FINAL assume true; 1314#fibo2EXIT >#54#return; 1313#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1308#fibo1FINAL assume true; 1309#fibo1EXIT >#48#return; 1246#L25-1 call #t~ret7 := fibo1(~n - 2);< 1302#$Ultimate##0 ~n := #in~n; 1333#L10 assume ~n < 1;#res := 0; 1274#fibo1FINAL assume true; 1368#fibo1EXIT >#50#return; 1237#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1248#fibo2FINAL assume true; 1261#fibo2EXIT >#52#return; 1206#L15-1 call #t~ret5 := fibo2(~n - 2);< 1331#$Ultimate##0 [2024-11-19 15:00:10,833 INFO L747 eck$LassoCheckResult]: Loop: 1331#$Ultimate##0 ~n := #in~n; 1325#L20 assume !(~n < 1); 1205#L22 assume !(1 == ~n); 1210#L25 call #t~ret6 := fibo1(~n - 1);< 1230#$Ultimate##0 ~n := #in~n; 1239#L10 assume !(~n < 1); 1266#L12 assume !(1 == ~n); 1208#L15 call #t~ret4 := fibo2(~n - 1);< 1331#$Ultimate##0 [2024-11-19 15:00:10,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:10,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1873386980, now seen corresponding path program 1 times [2024-11-19 15:00:10,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:10,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875904319] [2024-11-19 15:00:10,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:10,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-19 15:00:10,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:10,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875904319] [2024-11-19 15:00:10,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875904319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:10,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950278676] [2024-11-19 15:00:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:10,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:10,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:10,943 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:10,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-19 15:00:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:10,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 15:00:10,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 15:00:11,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:11,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-11-19 15:00:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 15:00:11,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950278676] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:11,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:11,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 15 [2024-11-19 15:00:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447488274] [2024-11-19 15:00:11,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:11,424 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:11,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:11,424 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2024-11-19 15:00:11,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973435461] [2024-11-19 15:00:11,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 15:00:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:11,430 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 15:00:11,430 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 15:00:11,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:11,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:11,535 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:11,535 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:11,535 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:11,535 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:11,535 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:11,535 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,535 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:11,535 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:11,536 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration4_Loop [2024-11-19 15:00:11,536 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:11,536 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:11,536 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,540 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,543 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,545 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,547 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,549 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,556 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,598 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:11,598 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:11,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,600 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-11-19 15:00:11,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:11,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:11,618 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:11,618 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:11,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:11,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,633 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-11-19 15:00:11,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:11,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:11,646 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:11,646 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:11,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:11,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,657 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-11-19 15:00:11,658 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:11,658 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:11,669 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:11,669 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:11,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-11-19 15:00:11,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,681 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-11-19 15:00:11,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:11,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:11,693 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:11,693 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:11,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2024-11-19 15:00:11,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,705 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-11-19 15:00:11,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:11,706 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:11,717 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:11,717 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:11,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:11,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,729 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-11-19 15:00:11,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:11,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:11,743 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:11,743 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:11,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:11,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,755 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-11-19 15:00:11,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:11,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:11,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2024-11-19 15:00:11,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,784 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-11-19 15:00:11,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:11,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:11,814 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:11,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:11,818 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:11,818 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:11,818 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:11,818 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:11,819 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:11,819 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,819 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:11,819 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:11,819 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration4_Loop [2024-11-19 15:00:11,819 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:11,819 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:11,819 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,824 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,827 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,829 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,839 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:11,888 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:11,888 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:11,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,890 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-11-19 15:00:11,893 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:11,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:11,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:11,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:11,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:11,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:11,906 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:11,906 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:11,908 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:11,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2024-11-19 15:00:11,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,920 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-11-19 15:00:11,922 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:11,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:11,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:11,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:11,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:11,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:11,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:11,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:11,934 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:11,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:11,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,946 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-11-19 15:00:11,947 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:11,957 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:11,957 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:11,957 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:11,957 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:11,957 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:11,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:11,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:11,959 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:11,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2024-11-19 15:00:11,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:11,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:11,971 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:11,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-11-19 15:00:11,972 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:11,982 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:11,982 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:11,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:11,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:11,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:11,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:11,983 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:11,987 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:12,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2024-11-19 15:00:12,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:12,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:12,006 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:12,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-11-19 15:00:12,008 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:12,018 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:12,018 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:12,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:12,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:12,019 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:12,019 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:12,019 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:12,020 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:12,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:12,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:12,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:12,032 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:12,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2024-11-19 15:00:12,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:12,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:12,043 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:12,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:12,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:12,044 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:12,044 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:12,044 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:12,045 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:12,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:12,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:12,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:12,056 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:12,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2024-11-19 15:00:12,058 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:12,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:12,068 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:12,068 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:12,068 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:12,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:12,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:12,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:12,072 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:12,075 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 15:00:12,075 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 15:00:12,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:12,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:12,077 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:12,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2024-11-19 15:00:12,078 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:12,078 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:12,078 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:12,078 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2024-11-19 15:00:12,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:12,089 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:12,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:12,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 15:00:12,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:12,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 15:00:12,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:12,487 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2024-11-19 15:00:12,488 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 15:00:12,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2024-11-19 15:00:12,692 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 658 states and 934 transitions. Complement of second has 30 states. [2024-11-19 15:00:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 15:00:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2024-11-19 15:00:12,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 36 letters. Loop has 8 letters. [2024-11-19 15:00:12,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:12,695 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:12,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:12,747 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 15:00:12,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:13,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 15:00:13,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:13,070 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2024-11-19 15:00:13,070 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 15:00:13,221 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 658 states and 934 transitions. Complement of second has 30 states. [2024-11-19 15:00:13,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:13,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 15:00:13,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2024-11-19 15:00:13,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 36 letters. Loop has 8 letters. [2024-11-19 15:00:13,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:13,224 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:13,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:13,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 15:00:13,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:13,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 15:00:13,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:13,601 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2024-11-19 15:00:13,602 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 15:00:13,780 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 227 transitions. cyclomatic complexity: 67. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 538 states and 752 transitions. Complement of second has 29 states. [2024-11-19 15:00:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:13,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 15:00:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2024-11-19 15:00:13,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 36 letters. Loop has 8 letters. [2024-11-19 15:00:13,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:13,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 44 letters. Loop has 8 letters. [2024-11-19 15:00:13,782 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:13,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 36 letters. Loop has 16 letters. [2024-11-19 15:00:13,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:13,783 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 538 states and 752 transitions. [2024-11-19 15:00:13,790 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2024-11-19 15:00:13,797 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 538 states to 437 states and 632 transitions. [2024-11-19 15:00:13,797 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 187 [2024-11-19 15:00:13,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 218 [2024-11-19 15:00:13,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 437 states and 632 transitions. [2024-11-19 15:00:13,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:13,798 INFO L218 hiAutomatonCegarLoop]: Abstraction has 437 states and 632 transitions. [2024-11-19 15:00:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states and 632 transitions. [2024-11-19 15:00:13,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 366. [2024-11-19 15:00:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 244 states have (on average 1.2868852459016393) internal successors, (314), 265 states have internal predecessors, (314), 71 states have call successors, (74), 55 states have call predecessors, (74), 51 states have return successors, (118), 45 states have call predecessors, (118), 69 states have call successors, (118) [2024-11-19 15:00:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 506 transitions. [2024-11-19 15:00:13,831 INFO L240 hiAutomatonCegarLoop]: Abstraction has 366 states and 506 transitions. [2024-11-19 15:00:13,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:13,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 15:00:13,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-19 15:00:13,833 INFO L87 Difference]: Start difference. First operand 366 states and 506 transitions. Second operand has 15 states, 13 states have (on average 3.230769230769231) internal successors, (42), 14 states have internal predecessors, (42), 11 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-19 15:00:14,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:14,014 INFO L93 Difference]: Finished difference Result 398 states and 546 transitions. [2024-11-19 15:00:14,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 546 transitions. [2024-11-19 15:00:14,019 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 48 [2024-11-19 15:00:14,025 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 361 states and 506 transitions. [2024-11-19 15:00:14,025 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 194 [2024-11-19 15:00:14,027 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2024-11-19 15:00:14,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 361 states and 506 transitions. [2024-11-19 15:00:14,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:14,027 INFO L218 hiAutomatonCegarLoop]: Abstraction has 361 states and 506 transitions. [2024-11-19 15:00:14,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states and 506 transitions. [2024-11-19 15:00:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 325. [2024-11-19 15:00:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 216 states have (on average 1.2314814814814814) internal successors, (266), 242 states have internal predecessors, (266), 59 states have call successors, (61), 46 states have call predecessors, (61), 50 states have return successors, (105), 36 states have call predecessors, (105), 57 states have call successors, (105) [2024-11-19 15:00:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 432 transitions. [2024-11-19 15:00:14,054 INFO L240 hiAutomatonCegarLoop]: Abstraction has 325 states and 432 transitions. [2024-11-19 15:00:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 15:00:14,055 INFO L425 stractBuchiCegarLoop]: Abstraction has 325 states and 432 transitions. [2024-11-19 15:00:14,055 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-19 15:00:14,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 325 states and 432 transitions. [2024-11-19 15:00:14,057 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2024-11-19 15:00:14,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:14,059 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:14,061 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:14,062 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-19 15:00:14,062 INFO L745 eck$LassoCheckResult]: Stem: 4839#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4801#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 4802#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4846#$Ultimate##0 ~n := #in~n; 4892#L10 assume !(~n < 1); 4891#L12 assume !(1 == ~n); 4877#L15 call #t~ret4 := fibo2(~n - 1);< 4890#$Ultimate##0 ~n := #in~n; 4889#L20 assume !(~n < 1); 4886#L22 assume !(1 == ~n); 4818#L25 call #t~ret6 := fibo1(~n - 1);< 4878#$Ultimate##0 ~n := #in~n; 4887#L10 assume !(~n < 1); 4966#L12 assume !(1 == ~n); 4956#L15 call #t~ret4 := fibo2(~n - 1);< 4985#$Ultimate##0 ~n := #in~n; 4995#L20 assume !(~n < 1); 4993#L22 assume 1 == ~n;#res := 1; 4990#fibo2FINAL assume true; 4984#fibo2EXIT >#52#return; 4816#L15-1 call #t~ret5 := fibo2(~n - 2);< 4820#$Ultimate##0 ~n := #in~n; 4969#L20 assume ~n < 1;#res := 0; 4967#fibo2FINAL assume true; 4965#fibo2EXIT >#54#return; 4963#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 4962#fibo1FINAL assume true; 4960#fibo1EXIT >#48#return; 4938#L25-1 call #t~ret7 := fibo1(~n - 2);< 4947#$Ultimate##0 ~n := #in~n; 5018#L10 assume ~n < 1;#res := 0; 5017#fibo1FINAL assume true; 5012#fibo1EXIT >#50#return; 5008#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5006#fibo2FINAL assume true; 5001#fibo2EXIT >#52#return; 4767#L15-1 call #t~ret5 := fibo2(~n - 2);< 4958#$Ultimate##0 [2024-11-19 15:00:14,062 INFO L747 eck$LassoCheckResult]: Loop: 4958#$Ultimate##0 ~n := #in~n; 4775#L20 assume !(~n < 1); 4765#L22 assume !(1 == ~n); 4769#L25 call #t~ret6 := fibo1(~n - 1);< 4957#$Ultimate##0 ~n := #in~n; 4971#L10 assume !(~n < 1); 4972#L12 assume !(1 == ~n); 4768#L15 call #t~ret4 := fibo2(~n - 1);< 4774#$Ultimate##0 ~n := #in~n; 4775#L20 assume !(~n < 1); 4765#L22 assume !(1 == ~n); 4769#L25 call #t~ret6 := fibo1(~n - 1);< 4957#$Ultimate##0 ~n := #in~n; 4971#L10 assume !(~n < 1); 4972#L12 assume !(1 == ~n); 4768#L15 call #t~ret4 := fibo2(~n - 1);< 4774#$Ultimate##0 ~n := #in~n; 4776#L20 assume !(~n < 1); 5024#L22 assume 1 == ~n;#res := 1; 5021#fibo2FINAL assume true; 4988#fibo2EXIT >#52#return; 4766#L15-1 call #t~ret5 := fibo2(~n - 2);< 4958#$Ultimate##0 ~n := #in~n; 4959#L20 assume ~n < 1;#res := 0; 5023#fibo2FINAL assume true; 5020#fibo2EXIT >#54#return; 4975#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5016#fibo1FINAL assume true; 5011#fibo1EXIT >#48#return; 4981#L25-1 call #t~ret7 := fibo1(~n - 2);< 5007#$Ultimate##0 ~n := #in~n; 5004#L10 assume !(~n < 1); 5002#L12 assume !(1 == ~n); 4979#L15 call #t~ret4 := fibo2(~n - 1);< 4989#$Ultimate##0 ~n := #in~n; 5015#L20 assume !(~n < 1); 5014#L22 assume 1 == ~n;#res := 1; 4928#fibo2FINAL assume true; 4987#fibo2EXIT >#52#return; 4766#L15-1 call #t~ret5 := fibo2(~n - 2);< 4958#$Ultimate##0 ~n := #in~n; 4959#L20 assume ~n < 1;#res := 0; 5023#fibo2FINAL assume true; 5020#fibo2EXIT >#54#return; 4975#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5016#fibo1FINAL assume true; 5011#fibo1EXIT >#50#return; 5010#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5035#fibo2FINAL assume true; 4978#fibo2EXIT >#52#return; 4766#L15-1 call #t~ret5 := fibo2(~n - 2);< 4958#$Ultimate##0 [2024-11-19 15:00:14,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:14,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1302122831, now seen corresponding path program 1 times [2024-11-19 15:00:14,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:14,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223519380] [2024-11-19 15:00:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:14,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 15:00:14,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:14,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223519380] [2024-11-19 15:00:14,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223519380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:14,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626274588] [2024-11-19 15:00:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:14,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:14,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:14,183 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:14,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-19 15:00:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:14,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 15:00:14,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 15:00:14,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 15:00:14,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626274588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:14,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:14,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-19 15:00:14,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973589331] [2024-11-19 15:00:14,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:14,425 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:14,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:14,425 INFO L85 PathProgramCache]: Analyzing trace with hash 592500779, now seen corresponding path program 1 times [2024-11-19 15:00:14,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87818715] [2024-11-19 15:00:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:14,590 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-19 15:00:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87818715] [2024-11-19 15:00:14,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87818715] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:14,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776537319] [2024-11-19 15:00:14,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:14,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:14,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:14,593 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:14,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-19 15:00:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:14,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 15:00:14,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 15:00:14,709 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 15:00:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776537319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:15,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:15,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-19 15:00:15,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037546693] [2024-11-19 15:00:15,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:15,109 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-19 15:00:15,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:15,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 15:00:15,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 15:00:15,111 INFO L87 Difference]: Start difference. First operand 325 states and 432 transitions. cyclomatic complexity: 114 Second operand has 11 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 6 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-19 15:00:15,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:15,226 INFO L93 Difference]: Finished difference Result 355 states and 480 transitions. [2024-11-19 15:00:15,226 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 355 states and 480 transitions. [2024-11-19 15:00:15,230 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2024-11-19 15:00:15,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 355 states to 352 states and 476 transitions. [2024-11-19 15:00:15,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 189 [2024-11-19 15:00:15,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 189 [2024-11-19 15:00:15,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 352 states and 476 transitions. [2024-11-19 15:00:15,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:15,236 INFO L218 hiAutomatonCegarLoop]: Abstraction has 352 states and 476 transitions. [2024-11-19 15:00:15,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states and 476 transitions. [2024-11-19 15:00:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 332. [2024-11-19 15:00:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 220 states have (on average 1.2272727272727273) internal successors, (270), 248 states have internal predecessors, (270), 59 states have call successors, (61), 46 states have call predecessors, (61), 53 states have return successors, (112), 37 states have call predecessors, (112), 57 states have call successors, (112) [2024-11-19 15:00:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 443 transitions. [2024-11-19 15:00:15,252 INFO L240 hiAutomatonCegarLoop]: Abstraction has 332 states and 443 transitions. [2024-11-19 15:00:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 15:00:15,254 INFO L425 stractBuchiCegarLoop]: Abstraction has 332 states and 443 transitions. [2024-11-19 15:00:15,254 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-19 15:00:15,254 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 332 states and 443 transitions. [2024-11-19 15:00:15,257 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2024-11-19 15:00:15,257 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:15,257 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:15,259 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:15,260 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:15,260 INFO L745 eck$LassoCheckResult]: Stem: 6062#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6027#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 6028#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6065#$Ultimate##0 ~n := #in~n; 6195#L10 assume !(~n < 1); 6183#L12 assume !(1 == ~n); 6100#L15 call #t~ret4 := fibo2(~n - 1);< 6182#$Ultimate##0 ~n := #in~n; 6180#L20 assume !(~n < 1); 6179#L22 assume !(1 == ~n); 6037#L25 call #t~ret6 := fibo1(~n - 1);< 6097#$Ultimate##0 ~n := #in~n; 6094#L10 assume !(~n < 1); 6086#L12 assume !(1 == ~n); 6082#L15 call #t~ret4 := fibo2(~n - 1);< 6083#$Ultimate##0 ~n := #in~n; 6101#L20 assume !(~n < 1); 6174#L22 assume !(1 == ~n); 6039#L25 call #t~ret6 := fibo1(~n - 1);< 6097#$Ultimate##0 ~n := #in~n; 6098#L10 assume !(~n < 1); 6185#L12 assume 1 == ~n;#res := 1; 6184#fibo1FINAL assume true; 6170#fibo1EXIT >#48#return; 6148#L25-1 call #t~ret7 := fibo1(~n - 2);< 6158#$Ultimate##0 ~n := #in~n; 6248#L10 assume ~n < 1;#res := 0; 6249#fibo1FINAL assume true; 6298#fibo1EXIT >#50#return; 6240#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6275#fibo2FINAL assume true; 6204#fibo2EXIT >#52#return; 5999#L15-1 [2024-11-19 15:00:15,260 INFO L747 eck$LassoCheckResult]: Loop: 5999#L15-1 call #t~ret5 := fibo2(~n - 2);< 6036#$Ultimate##0 ~n := #in~n; 6006#L20 assume !(~n < 1); 5996#L22 assume !(1 == ~n); 6000#L25 call #t~ret6 := fibo1(~n - 1);< 6203#$Ultimate##0 ~n := #in~n; 6202#L10 assume !(~n < 1); 6198#L12 assume !(1 == ~n); 5998#L15 call #t~ret4 := fibo2(~n - 1);< 6005#$Ultimate##0 ~n := #in~n; 6006#L20 assume !(~n < 1); 5996#L22 assume !(1 == ~n); 6000#L25 call #t~ret6 := fibo1(~n - 1);< 6203#$Ultimate##0 ~n := #in~n; 6202#L10 assume !(~n < 1); 6198#L12 assume !(1 == ~n); 5998#L15 call #t~ret4 := fibo2(~n - 1);< 6005#$Ultimate##0 ~n := #in~n; 6007#L20 assume !(~n < 1); 6260#L22 assume 1 == ~n;#res := 1; 6230#fibo2FINAL assume true; 6216#fibo2EXIT >#52#return; 5999#L15-1 call #t~ret5 := fibo2(~n - 2);< 6036#$Ultimate##0 ~n := #in~n; 6199#L20 assume ~n < 1;#res := 0; 6255#fibo2FINAL assume true; 6254#fibo2EXIT >#54#return; 6205#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6233#fibo1FINAL assume true; 6226#fibo1EXIT >#48#return; 6213#L25-1 call #t~ret7 := fibo1(~n - 2);< 6229#$Ultimate##0 ~n := #in~n; 6244#L10 assume ~n < 1;#res := 0; 6245#fibo1FINAL assume true; 6222#fibo1EXIT >#50#return; 6220#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6218#fibo2FINAL assume true; 6208#fibo2EXIT >#52#return; 5999#L15-1 [2024-11-19 15:00:15,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2024-11-19 15:00:15,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:15,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717561307] [2024-11-19 15:00:15,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:15,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 15:00:15,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:15,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717561307] [2024-11-19 15:00:15,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717561307] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:15,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7512913] [2024-11-19 15:00:15,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:15,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:15,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:15,436 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:15,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-19 15:00:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:15,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 15:00:15,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:15,548 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 15:00:15,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 15:00:15,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7512913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:15,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:15,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2024-11-19 15:00:15,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981785329] [2024-11-19 15:00:15,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:15,722 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:15,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:15,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1165993954, now seen corresponding path program 1 times [2024-11-19 15:00:15,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:15,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426870264] [2024-11-19 15:00:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:15,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-19 15:00:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426870264] [2024-11-19 15:00:15,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426870264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:15,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140264405] [2024-11-19 15:00:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:15,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:15,808 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:15,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-19 15:00:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:15,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 15:00:15,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 15:00:15,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-19 15:00:16,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140264405] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:16,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:16,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-19 15:00:16,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285776680] [2024-11-19 15:00:16,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:16,105 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-19 15:00:16,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:16,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 15:00:16,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2024-11-19 15:00:16,105 INFO L87 Difference]: Start difference. First operand 332 states and 443 transitions. cyclomatic complexity: 118 Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-19 15:00:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:16,317 INFO L93 Difference]: Finished difference Result 351 states and 426 transitions. [2024-11-19 15:00:16,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 351 states and 426 transitions. [2024-11-19 15:00:16,320 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 50 [2024-11-19 15:00:16,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 351 states to 215 states and 252 transitions. [2024-11-19 15:00:16,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2024-11-19 15:00:16,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 99 [2024-11-19 15:00:16,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 215 states and 252 transitions. [2024-11-19 15:00:16,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:16,322 INFO L218 hiAutomatonCegarLoop]: Abstraction has 215 states and 252 transitions. [2024-11-19 15:00:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states and 252 transitions. [2024-11-19 15:00:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 203. [2024-11-19 15:00:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 137 states have (on average 1.1897810218978102) internal successors, (163), 150 states have internal predecessors, (163), 40 states have call successors, (41), 32 states have call predecessors, (41), 26 states have return successors, (36), 20 states have call predecessors, (36), 27 states have call successors, (36) [2024-11-19 15:00:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 240 transitions. [2024-11-19 15:00:16,327 INFO L240 hiAutomatonCegarLoop]: Abstraction has 203 states and 240 transitions. [2024-11-19 15:00:16,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 15:00:16,328 INFO L425 stractBuchiCegarLoop]: Abstraction has 203 states and 240 transitions. [2024-11-19 15:00:16,328 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-19 15:00:16,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 203 states and 240 transitions. [2024-11-19 15:00:16,330 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2024-11-19 15:00:16,330 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:16,330 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:16,331 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:16,331 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:16,331 INFO L745 eck$LassoCheckResult]: Stem: 7196#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7168#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 7169#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 7199#$Ultimate##0 ~n := #in~n; 7233#L10 assume !(~n < 1); 7228#L12 assume !(1 == ~n); 7181#L15 call #t~ret4 := fibo2(~n - 1);< 7223#$Ultimate##0 ~n := #in~n; 7220#L20 assume !(~n < 1); 7217#L22 assume !(1 == ~n); 7176#L25 call #t~ret6 := fibo1(~n - 1);< 7214#$Ultimate##0 ~n := #in~n; 7245#L10 assume !(~n < 1); 7239#L12 assume !(1 == ~n); 7231#L15 call #t~ret4 := fibo2(~n - 1);< 7232#$Ultimate##0 ~n := #in~n; 7246#L20 assume !(~n < 1); 7242#L22 assume 1 == ~n;#res := 1; 7236#fibo2FINAL assume true; 7230#fibo2EXIT >#52#return; 7226#L15-1 call #t~ret5 := fibo2(~n - 2);< 7227#$Ultimate##0 ~n := #in~n; 7234#L20 assume ~n < 1;#res := 0; 7229#fibo2FINAL assume true; 7225#fibo2EXIT >#54#return; 7224#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7222#fibo1FINAL assume true; 7212#fibo1EXIT >#48#return; 7206#L25-1 call #t~ret7 := fibo1(~n - 2);< 7207#$Ultimate##0 ~n := #in~n; 7280#L10 assume !(~n < 1); 7278#L12 assume !(1 == ~n); 7265#L15 call #t~ret4 := fibo2(~n - 1);< 7270#$Ultimate##0 ~n := #in~n; 7312#L20 assume !(~n < 1); 7276#L22 assume 1 == ~n;#res := 1; 7272#fibo2FINAL assume true; 7263#fibo2EXIT >#52#return; 7262#L15-1 [2024-11-19 15:00:16,331 INFO L747 eck$LassoCheckResult]: Loop: 7262#L15-1 call #t~ret5 := fibo2(~n - 2);< 7294#$Ultimate##0 ~n := #in~n; 7293#L20 assume !(~n < 1); 7292#L22 assume !(1 == ~n); 7166#L25 call #t~ret6 := fibo1(~n - 1);< 7291#$Ultimate##0 ~n := #in~n; 7333#L10 assume !(~n < 1); 7334#L12 assume !(1 == ~n); 7137#L15 call #t~ret4 := fibo2(~n - 1);< 7296#$Ultimate##0 ~n := #in~n; 7194#L20 assume !(~n < 1); 7136#L22 assume 1 == ~n;#res := 1; 7138#fibo2FINAL assume true; 7186#fibo2EXIT >#52#return; 7262#L15-1 [2024-11-19 15:00:16,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:16,332 INFO L85 PathProgramCache]: Analyzing trace with hash 794867286, now seen corresponding path program 1 times [2024-11-19 15:00:16,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:16,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226486727] [2024-11-19 15:00:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:16,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:16,431 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-19 15:00:16,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:16,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226486727] [2024-11-19 15:00:16,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226486727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:16,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513043894] [2024-11-19 15:00:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:16,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:16,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:16,434 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:16,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-19 15:00:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:16,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 15:00:16,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 15:00:16,524 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:16,621 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 15:00:16,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513043894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:16,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:16,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-11-19 15:00:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491470543] [2024-11-19 15:00:16,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:16,622 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-19 15:00:16,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:16,622 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2024-11-19 15:00:16,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:16,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591552035] [2024-11-19 15:00:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:16,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:16,625 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:16,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:16,763 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:16,763 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:16,763 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:16,763 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:16,763 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:16,763 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:16,763 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:16,763 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:16,763 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration7_Loop [2024-11-19 15:00:16,763 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:16,764 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:16,764 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,766 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,769 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,770 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,772 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,773 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,776 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,778 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,780 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,813 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:16,813 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:16,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:16,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:16,816 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:16,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2024-11-19 15:00:16,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:16,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:16,829 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:16,829 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=2} Honda state: {fibo1_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:16,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2024-11-19 15:00:16,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:16,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:16,841 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:16,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2024-11-19 15:00:16,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:16,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:16,853 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:16,853 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:16,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2024-11-19 15:00:16,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:16,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:16,864 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:16,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2024-11-19 15:00:16,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:16,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:16,876 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:16,876 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:16,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2024-11-19 15:00:16,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:16,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:16,888 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:16,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2024-11-19 15:00:16,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:16,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:16,900 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:16,900 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:16,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2024-11-19 15:00:16,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:16,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:16,911 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:16,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2024-11-19 15:00:16,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:16,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:16,924 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-19 15:00:16,924 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-19 15:00:16,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2024-11-19 15:00:16,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:16,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:16,935 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:16,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2024-11-19 15:00:16,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:16,937 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:16,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2024-11-19 15:00:16,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:16,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:16,959 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:16,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2024-11-19 15:00:16,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:16,960 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:16,972 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:16,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2024-11-19 15:00:16,982 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:16,982 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:16,982 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:16,982 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:16,982 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:16,983 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:16,983 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:16,983 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:16,983 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration7_Loop [2024-11-19 15:00:16,983 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:16,983 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:16,983 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,989 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,991 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,992 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,994 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:16,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:17,000 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:17,002 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:17,003 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:17,037 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:17,037 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:17,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:17,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:17,039 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:17,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2024-11-19 15:00:17,040 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:17,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:17,050 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:17,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:17,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:17,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:17,051 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:17,051 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:17,052 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:17,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:17,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:17,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:17,063 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:17,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2024-11-19 15:00:17,064 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:17,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:17,074 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:17,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:17,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:17,075 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:17,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:17,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:17,076 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:17,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2024-11-19 15:00:17,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:17,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:17,087 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:17,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2024-11-19 15:00:17,089 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:17,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:17,099 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:17,099 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:17,099 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:17,099 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:17,099 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:17,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:17,100 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:17,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2024-11-19 15:00:17,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:17,112 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:17,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2024-11-19 15:00:17,114 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:17,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:17,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:17,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:17,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:17,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:17,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:17,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:17,127 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-19 15:00:17,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:17,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:17,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:17,143 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:17,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2024-11-19 15:00:17,145 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:17,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:17,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:17,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:17,157 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:17,157 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:17,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:17,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:17,161 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:17,164 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-19 15:00:17,164 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-19 15:00:17,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:17,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:17,166 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:17,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2024-11-19 15:00:17,167 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:17,168 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:17,168 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:17,168 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2024-11-19 15:00:17,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:17,179 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:17,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:17,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 15:00:17,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:17,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:17,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 15:00:17,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:17,526 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-19 15:00:17,526 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 15:00:17,824 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 863 states and 1012 transitions. Complement of second has 48 states. [2024-11-19 15:00:17,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 15:00:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 60 transitions. [2024-11-19 15:00:17,826 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 60 transitions. Stem has 38 letters. Loop has 14 letters. [2024-11-19 15:00:17,826 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:17,826 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:17,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:17,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 15:00:17,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:18,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2024-11-19 15:00:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:18,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 15:00:18,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:18,206 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-19 15:00:18,206 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 15:00:18,458 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 514 states and 602 transitions. Complement of second has 30 states. [2024-11-19 15:00:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 15:00:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-19 15:00:18,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 38 letters. Loop has 14 letters. [2024-11-19 15:00:18,460 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:18,460 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:18,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:18,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 15:00:18,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:18,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 15:00:18,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:18,816 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-19 15:00:18,816 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 15:00:19,157 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 203 states and 240 transitions. cyclomatic complexity: 43. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1217 states and 1428 transitions. Complement of second has 121 states. [2024-11-19 15:00:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-19 15:00:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 67 transitions. [2024-11-19 15:00:19,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 38 letters. Loop has 14 letters. [2024-11-19 15:00:19,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:19,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 52 letters. Loop has 14 letters. [2024-11-19 15:00:19,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:19,161 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 67 transitions. Stem has 38 letters. Loop has 28 letters. [2024-11-19 15:00:19,162 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:19,162 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1217 states and 1428 transitions. [2024-11-19 15:00:19,172 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 154 [2024-11-19 15:00:19,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1217 states to 624 states and 740 transitions. [2024-11-19 15:00:19,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 267 [2024-11-19 15:00:19,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 281 [2024-11-19 15:00:19,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 624 states and 740 transitions. [2024-11-19 15:00:19,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:19,179 INFO L218 hiAutomatonCegarLoop]: Abstraction has 624 states and 740 transitions. [2024-11-19 15:00:19,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states and 740 transitions. [2024-11-19 15:00:19,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 453. [2024-11-19 15:00:19,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 309 states have (on average 1.1844660194174756) internal successors, (366), 334 states have internal predecessors, (366), 83 states have call successors, (87), 73 states have call predecessors, (87), 61 states have return successors, (78), 45 states have call predecessors, (78), 60 states have call successors, (78) [2024-11-19 15:00:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 531 transitions. [2024-11-19 15:00:19,191 INFO L240 hiAutomatonCegarLoop]: Abstraction has 453 states and 531 transitions. [2024-11-19 15:00:19,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 15:00:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-19 15:00:19,192 INFO L87 Difference]: Start difference. First operand 453 states and 531 transitions. Second operand has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 6 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-19 15:00:19,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:19,321 INFO L93 Difference]: Finished difference Result 280 states and 304 transitions. [2024-11-19 15:00:19,321 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 280 states and 304 transitions. [2024-11-19 15:00:19,323 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2024-11-19 15:00:19,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 280 states to 86 states and 90 transitions. [2024-11-19 15:00:19,324 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2024-11-19 15:00:19,324 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2024-11-19 15:00:19,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 90 transitions. [2024-11-19 15:00:19,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-19 15:00:19,325 INFO L218 hiAutomatonCegarLoop]: Abstraction has 86 states and 90 transitions. [2024-11-19 15:00:19,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states and 90 transitions. [2024-11-19 15:00:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2024-11-19 15:00:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 48 states have internal predecessors, (50), 13 states have call successors, (13), 12 states have call predecessors, (13), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 15:00:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2024-11-19 15:00:19,327 INFO L240 hiAutomatonCegarLoop]: Abstraction has 67 states and 70 transitions. [2024-11-19 15:00:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 15:00:19,328 INFO L425 stractBuchiCegarLoop]: Abstraction has 67 states and 70 transitions. [2024-11-19 15:00:19,328 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-19 15:00:19,328 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 67 states and 70 transitions. [2024-11-19 15:00:19,328 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2024-11-19 15:00:19,328 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-19 15:00:19,328 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-19 15:00:19,329 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 15:00:19,329 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-19 15:00:19,329 INFO L745 eck$LassoCheckResult]: Stem: 11704#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 11686#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 11687#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 11707#$Ultimate##0 ~n := #in~n; 11719#L10 assume !(~n < 1); 11717#L12 assume !(1 == ~n); 11680#L15 call #t~ret4 := fibo2(~n - 1);< 11699#$Ultimate##0 ~n := #in~n; 11720#L20 assume !(~n < 1); 11718#L22 assume !(1 == ~n); 11690#L25 call #t~ret6 := fibo1(~n - 1);< 11691#$Ultimate##0 ~n := #in~n; 11715#L10 assume !(~n < 1); 11713#L12 assume !(1 == ~n); 11710#L15 call #t~ret4 := fibo2(~n - 1);< 11711#$Ultimate##0 ~n := #in~n; 11716#L20 assume !(~n < 1); 11714#L22 assume 1 == ~n;#res := 1; 11712#fibo2FINAL assume true; 11709#fibo2EXIT >#52#return; 11666#L15-1 call #t~ret5 := fibo2(~n - 2);< 11672#$Ultimate##0 ~n := #in~n; 11673#L20 assume ~n < 1;#res := 0; 11667#fibo2FINAL assume true; 11696#fibo2EXIT >#54#return; 11705#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11706#fibo1FINAL assume true; 11708#fibo1EXIT >#48#return; 11678#L25-1 call #t~ret7 := fibo1(~n - 2);< 11681#$Ultimate##0 ~n := #in~n; 11683#L10 assume !(~n < 1); 11693#L12 assume 1 == ~n;#res := 1; 11677#fibo1FINAL assume true; 11679#fibo1EXIT >#50#return; 11682#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 11692#fibo2FINAL assume true; 11721#fibo2EXIT >#52#return; 11669#L15-1 [2024-11-19 15:00:19,329 INFO L747 eck$LassoCheckResult]: Loop: 11669#L15-1 call #t~ret5 := fibo2(~n - 2);< 11689#$Ultimate##0 ~n := #in~n; 11701#L20 assume !(~n < 1); 11668#L22 assume !(1 == ~n); 11671#L25 call #t~ret6 := fibo1(~n - 1);< 11684#$Ultimate##0 ~n := #in~n; 11685#L10 assume !(~n < 1); 11694#L12 assume !(1 == ~n); 11695#L15 call #t~ret4 := fibo2(~n - 1);< 11700#$Ultimate##0 ~n := #in~n; 11728#L20 assume !(~n < 1); 11727#L22 assume !(1 == ~n); 11688#L25 call #t~ret6 := fibo1(~n - 1);< 11726#$Ultimate##0 ~n := #in~n; 11725#L10 assume !(~n < 1); 11724#L12 assume !(1 == ~n); 11703#L15 call #t~ret4 := fibo2(~n - 1);< 11722#$Ultimate##0 ~n := #in~n; 11731#L20 assume !(~n < 1); 11730#L22 assume 1 == ~n;#res := 1; 11729#fibo2FINAL assume true; 11702#fibo2EXIT >#52#return; 11669#L15-1 [2024-11-19 15:00:19,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:19,330 INFO L85 PathProgramCache]: Analyzing trace with hash -562711824, now seen corresponding path program 1 times [2024-11-19 15:00:19,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:19,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304061414] [2024-11-19 15:00:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 15:00:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:19,336 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:19,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:19,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash 878078665, now seen corresponding path program 2 times [2024-11-19 15:00:19,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:19,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012574435] [2024-11-19 15:00:19,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 15:00:19,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:19,353 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 15:00:19,354 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-19 15:00:19,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 15:00:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 15:00:19,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 15:00:19,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:19,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1575530616, now seen corresponding path program 2 times [2024-11-19 15:00:19,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 15:00:19,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069658016] [2024-11-19 15:00:19,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 15:00:19,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 15:00:19,398 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 15:00:19,399 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 15:00:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-19 15:00:19,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 15:00:19,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069658016] [2024-11-19 15:00:19,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069658016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 15:00:19,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291975511] [2024-11-19 15:00:19,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 15:00:19,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 15:00:19,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:19,494 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 15:00:19,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-19 15:00:19,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 15:00:19,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 15:00:19,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 15:00:19,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-19 15:00:19,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 15:00:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 49 proven. 13 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-19 15:00:19,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291975511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 15:00:19,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 15:00:19,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 12 [2024-11-19 15:00:19,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831303210] [2024-11-19 15:00:19,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 15:00:19,926 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:19,926 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:19,926 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:19,926 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:19,926 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-19 15:00:19,926 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:19,926 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:19,926 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:19,926 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration8_Loop [2024-11-19 15:00:19,926 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:19,926 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:19,927 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:19,932 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:19,934 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:19,936 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:19,937 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:19,939 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:19,940 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:19,941 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:19,945 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:19,978 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:19,978 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-19 15:00:19,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:19,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:19,980 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:19,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2024-11-19 15:00:19,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-19 15:00:19,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:20,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2024-11-19 15:00:20,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:20,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:20,010 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:20,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2024-11-19 15:00:20,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-19 15:00:20,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-19 15:00:20,024 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-19 15:00:20,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2024-11-19 15:00:20,034 INFO L204 LassoAnalysis]: Preferences: [2024-11-19 15:00:20,034 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-19 15:00:20,034 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-19 15:00:20,034 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-19 15:00:20,034 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-19 15:00:20,034 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:20,034 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-19 15:00:20,035 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-19 15:00:20,035 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-1.c_Iteration8_Loop [2024-11-19 15:00:20,035 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-19 15:00:20,035 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-19 15:00:20,035 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:20,039 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:20,040 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:20,042 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:20,044 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:20,045 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:20,047 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:20,048 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:20,050 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-19 15:00:20,084 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-19 15:00:20,085 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-19 15:00:20,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:20,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:20,086 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:20,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2024-11-19 15:00:20,087 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-19 15:00:20,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-19 15:00:20,096 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-19 15:00:20,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-19 15:00:20,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-19 15:00:20,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-19 15:00:20,097 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-19 15:00:20,097 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-19 15:00:20,099 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-19 15:00:20,100 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-19 15:00:20,100 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-19 15:00:20,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-19 15:00:20,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 15:00:20,102 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-19 15:00:20,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2024-11-19 15:00:20,103 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-19 15:00:20,103 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-19 15:00:20,103 INFO L474 LassoAnalysis]: Proved termination. [2024-11-19 15:00:20,103 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2024-11-19 15:00:20,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:20,113 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-19 15:00:20,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:20,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 15:00:20,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:20,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 15:00:20,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:20,566 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 12 loop predicates [2024-11-19 15:00:20,567 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 15:00:20,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:20,770 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 79 states and 83 transitions. Complement of second has 15 states. [2024-11-19 15:00:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:20,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 15:00:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2024-11-19 15:00:20,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 37 letters. Loop has 22 letters. [2024-11-19 15:00:20,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:20,772 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:20,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:20,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 15:00:20,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:21,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 15:00:21,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:21,187 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2024-11-19 15:00:21,187 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 15:00:21,318 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 79 states and 83 transitions. Complement of second has 15 states. [2024-11-19 15:00:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:21,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 15:00:21,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 25 transitions. [2024-11-19 15:00:21,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 25 transitions. Stem has 37 letters. Loop has 22 letters. [2024-11-19 15:00:21,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:21,319 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:21,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:21,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 15:00:21,368 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:21,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 15:00:21,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:21,726 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 12 loop predicates [2024-11-19 15:00:21,726 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 15:00:22,032 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 198 states and 208 transitions. Complement of second has 100 states. [2024-11-19 15:00:22,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:22,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 15:00:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 56 transitions. [2024-11-19 15:00:22,035 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 56 transitions. Stem has 37 letters. Loop has 22 letters. [2024-11-19 15:00:22,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:22,036 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-19 15:00:22,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 15:00:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:22,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 15:00:22,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 15:00:22,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 15:00:22,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 15:00:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 15:00:22,488 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2024-11-19 15:00:22,488 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4 Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 15:00:22,878 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 67 states and 70 transitions. cyclomatic complexity: 4. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Result 113 states and 120 transitions. Complement of second has 41 states. [2024-11-19 15:00:22,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 2 stem states 13 non-accepting loop states 1 accepting loop states [2024-11-19 15:00:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 8 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 15:00:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 54 transitions. [2024-11-19 15:00:22,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 54 transitions. Stem has 37 letters. Loop has 22 letters. [2024-11-19 15:00:22,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:22,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 54 transitions. Stem has 59 letters. Loop has 22 letters. [2024-11-19 15:00:22,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:22,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 54 transitions. Stem has 37 letters. Loop has 44 letters. [2024-11-19 15:00:22,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-19 15:00:22,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 120 transitions. [2024-11-19 15:00:22,886 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 15:00:22,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 0 states and 0 transitions. [2024-11-19 15:00:22,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-19 15:00:22,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-19 15:00:22,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-19 15:00:22,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-19 15:00:22,887 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 15:00:22,887 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 15:00:22,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 15:00:22,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 15:00:22,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-19 15:00:22,888 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 8 states have internal predecessors, (36), 6 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 15:00:22,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 15:00:22,888 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-19 15:00:22,888 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-19 15:00:22,888 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 15:00:22,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-19 15:00:22,889 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-19 15:00:22,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-19 15:00:22,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-19 15:00:22,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-19 15:00:22,889 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 15:00:22,889 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 15:00:22,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 15:00:22,890 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-19 15:00:22,890 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-11-19 15:00:22,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-19 15:00:22,890 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-19 15:00:22,890 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-19 15:00:22,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 03:00:22 BoogieIcfgContainer [2024-11-19 15:00:22,897 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-19 15:00:22,898 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 15:00:22,898 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 15:00:22,898 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 15:00:22,898 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:00:06" (3/4) ... [2024-11-19 15:00:22,901 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-19 15:00:22,902 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 15:00:22,902 INFO L158 Benchmark]: Toolchain (without parser) took 16877.63ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 145.8MB in the beginning and 111.9MB in the end (delta: 33.9MB). Peak memory consumption was 112.8MB. Max. memory is 16.1GB. [2024-11-19 15:00:22,903 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 176.2MB. Free memory was 147.5MB in the beginning and 147.4MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 15:00:22,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.95ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 134.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 15:00:22,903 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.86ms. Allocated memory is still 176.2MB. Free memory was 134.0MB in the beginning and 132.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 15:00:22,903 INFO L158 Benchmark]: Boogie Preprocessor took 28.47ms. Allocated memory is still 176.2MB. Free memory was 132.5MB in the beginning and 130.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 15:00:22,903 INFO L158 Benchmark]: RCFGBuilder took 320.07ms. Allocated memory is still 176.2MB. Free memory was 130.6MB in the beginning and 143.7MB in the end (delta: -13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-19 15:00:22,904 INFO L158 Benchmark]: BuchiAutomizer took 16254.46ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 143.7MB in the beginning and 111.9MB in the end (delta: 31.8MB). Peak memory consumption was 113.1MB. Max. memory is 16.1GB. [2024-11-19 15:00:22,904 INFO L158 Benchmark]: Witness Printer took 4.05ms. Allocated memory is still 255.9MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 15:00:22,905 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 176.2MB. Free memory was 147.5MB in the beginning and 147.4MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.95ms. Allocated memory is still 176.2MB. Free memory was 145.8MB in the beginning and 134.0MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.86ms. Allocated memory is still 176.2MB. Free memory was 134.0MB in the beginning and 132.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.47ms. Allocated memory is still 176.2MB. Free memory was 132.5MB in the beginning and 130.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 320.07ms. Allocated memory is still 176.2MB. Free memory was 130.6MB in the beginning and 143.7MB in the end (delta: -13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 16254.46ms. Allocated memory was 176.2MB in the beginning and 255.9MB in the end (delta: 79.7MB). Free memory was 143.7MB in the beginning and 111.9MB in the end (delta: 31.8MB). Peak memory consumption was 113.1MB. Max. memory is 16.1GB. * Witness Printer took 4.05ms. Allocated memory is still 255.9MB. Free memory is still 111.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (7 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 8 locations. One deterministic module has affine ranking function n and consists of 14 locations. One nondeterministic module has affine ranking function \old(n) and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 14 locations. One nondeterministic module has affine ranking function n and consists of 16 locations. 7 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.2s and 9 iterations. TraceHistogramMax:6. Analysis of lassos took 7.3s. Construction of modules took 1.5s. Büchi inclusion checks took 7.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 373 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/20 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 799 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 770 mSDsluCounter, 1330 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 907 mSDsCounter, 441 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2236 IncrementalHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 441 mSolverCounterUnsat, 423 mSDtfsCounter, 2236 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI3 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq189 hnf91 smp82 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-19 15:00:22,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:23,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:23,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-19 15:00:23,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:23,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:23,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-19 15:00:24,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-19 15:00:24,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-19 15:00:24,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE