./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-2.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 01:00:05,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 01:00:05,962 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-12 01:00:05,969 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 01:00:05,969 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 01:00:06,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 01:00:06,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 01:00:06,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 01:00:06,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 01:00:06,008 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 01:00:06,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 01:00:06,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 01:00:06,009 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 01:00:06,010 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-12 01:00:06,010 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-12 01:00:06,012 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-12 01:00:06,013 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-12 01:00:06,013 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-12 01:00:06,013 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-12 01:00:06,013 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 01:00:06,014 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-12 01:00:06,018 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 01:00:06,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 01:00:06,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 01:00:06,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 01:00:06,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-12 01:00:06,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-12 01:00:06,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-12 01:00:06,020 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 01:00:06,020 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 01:00:06,020 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 01:00:06,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 01:00:06,021 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-12 01:00:06,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 01:00:06,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 01:00:06,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 01:00:06,022 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 01:00:06,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 01:00:06,024 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-12 01:00:06,024 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 [2024-10-12 01:00:06,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 01:00:06,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 01:00:06,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 01:00:06,327 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 01:00:06,328 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 01:00:06,329 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2024-10-12 01:00:07,865 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 01:00:08,055 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 01:00:08,056 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2024-10-12 01:00:08,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d15d5eff0/bb13e6f749f14ba7a22fd037bb1866b3/FLAG688a95ee0 [2024-10-12 01:00:08,079 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d15d5eff0/bb13e6f749f14ba7a22fd037bb1866b3 [2024-10-12 01:00:08,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 01:00:08,083 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 01:00:08,084 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 01:00:08,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 01:00:08,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 01:00:08,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0f8059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08, skipping insertion in model container [2024-10-12 01:00:08,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 01:00:08,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 01:00:08,301 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 01:00:08,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 01:00:08,333 INFO L204 MainTranslator]: Completed translation [2024-10-12 01:00:08,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08 WrapperNode [2024-10-12 01:00:08,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 01:00:08,335 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 01:00:08,335 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 01:00:08,335 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 01:00:08,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,358 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-10-12 01:00:08,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 01:00:08,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 01:00:08,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 01:00:08,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 01:00:08,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,377 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]. [2024-10-12 01:00:08,377 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,380 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,381 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,382 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,384 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 01:00:08,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 01:00:08,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 01:00:08,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 01:00:08,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (1/1) ... [2024-10-12 01:00:08,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:08,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:08,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:08,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-12 01:00:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 01:00:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 01:00:08,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 01:00:08,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 01:00:08,469 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-10-12 01:00:08,469 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-10-12 01:00:08,534 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 01:00:08,537 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 01:00:08,654 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-12 01:00:08,655 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 01:00:08,668 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 01:00:08,669 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 01:00:08,670 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:00:08 BoogieIcfgContainer [2024-10-12 01:00:08,670 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 01:00:08,671 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-12 01:00:08,672 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-12 01:00:08,675 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-12 01:00:08,676 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 01:00:08,677 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.10 01:00:08" (1/3) ... [2024-10-12 01:00:08,677 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17123bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 01:00:08, skipping insertion in model container [2024-10-12 01:00:08,678 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 01:00:08,678 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 01:00:08" (2/3) ... [2024-10-12 01:00:08,678 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@17123bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 01:00:08, skipping insertion in model container [2024-10-12 01:00:08,678 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 01:00:08,678 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:00:08" (3/3) ... [2024-10-12 01:00:08,679 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_7-2.c [2024-10-12 01:00:08,739 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-12 01:00:08,739 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-12 01:00:08,740 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-12 01:00:08,740 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-12 01:00:08,741 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-12 01:00:08,741 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-12 01:00:08,741 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-12 01:00:08,741 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-12 01:00:08,746 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 01:00:08,766 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:08,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:08,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:08,773 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 01:00:08,773 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-12 01:00:08,774 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-12 01:00:08,774 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-12 01:00:08,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:08,777 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:08,777 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:08,777 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-12 01:00:08,777 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-12 01:00:08,783 INFO L745 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2024-10-12 01:00:08,783 INFO L747 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2024-10-12 01:00:08,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:08,788 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2024-10-12 01:00:08,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:08,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228029659] [2024-10-12 01:00:08,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:08,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:08,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:08,910 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:08,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:08,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2024-10-12 01:00:08,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:08,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093918832] [2024-10-12 01:00:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:08,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:08,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:08,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:08,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2024-10-12 01:00:08,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:08,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530614951] [2024-10-12 01:00:08,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:08,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:08,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:08,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:09,102 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:09,103 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:09,103 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:09,103 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:09,104 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 01:00:09,104 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,104 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:09,105 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:09,105 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2024-10-12 01:00:09,105 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:09,105 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:09,121 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,135 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,138 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,141 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,151 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,216 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:09,217 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 01:00:09,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-12 01:00:09,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:09,224 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:09,240 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:09,241 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:09,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-12 01:00:09,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,260 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-12 01:00:09,262 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:09,262 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:09,273 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:09,274 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:09,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-12 01:00:09,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,286 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-12 01:00:09,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:09,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:09,306 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:09,306 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:09,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:09,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-12 01:00:09,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:09,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:09,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-12 01:00:09,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-12 01:00:09,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 01:00:09,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:09,436 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 01:00:09,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:09,441 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:09,442 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:09,442 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:09,442 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:09,442 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 01:00:09,442 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,442 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:09,442 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:09,442 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2024-10-12 01:00:09,442 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:09,442 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:09,444 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,453 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,458 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,470 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:09,526 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:09,531 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 01:00:09,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,535 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-12 01:00:09,537 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:09,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:09,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:09,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:09,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:09,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:09,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:09,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:09,554 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:09,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:09,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,570 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-12 01:00:09,572 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:09,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:09,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:09,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:09,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:09,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:09,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:09,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:09,585 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:09,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-12 01:00:09,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,600 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-12 01:00:09,602 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:09,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:09,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:09,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:09,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:09,612 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:09,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:09,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:09,614 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:09,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:09,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,627 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-12 01:00:09,628 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:09,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:09,639 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:09,640 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:09,640 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:09,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:09,641 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:09,641 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:09,647 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 01:00:09,650 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 01:00:09,650 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 01:00:09,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:09,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:09,671 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:09,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-12 01:00:09,673 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 01:00:09,673 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 01:00:09,673 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 01:00:09,674 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-10-12 01:00:09,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:09,688 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 01:00:09,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:09,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 01:00:09,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:09,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 01:00:09,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:09,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:09,856 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-10-12 01:00:09,858 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 01:00:09,962 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 54 transitions. Complement of second has 16 states. [2024-10-12 01:00:09,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 01:00:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-10-12 01:00:09,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-10-12 01:00:09,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:09,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-10-12 01:00:09,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:09,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-10-12 01:00:09,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:09,976 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2024-10-12 01:00:09,980 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:09,985 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 23 states and 31 transitions. [2024-10-12 01:00:09,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-10-12 01:00:10,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-10-12 01:00:10,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-10-12 01:00:10,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:10,007 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-10-12 01:00:10,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-12 01:00:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-10-12 01:00:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-10-12 01:00:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-12 01:00:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-10-12 01:00:10,076 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-12 01:00:10,076 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-12 01:00:10,076 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-12 01:00:10,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-10-12 01:00:10,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:10,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:10,077 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:10,078 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:10,078 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:10,078 INFO L745 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 121#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 120#$Ultimate##0 ~n := #in~n; 122#L8 assume !(~n < 1); 134#L10 assume !(1 == ~n); 124#L13 call #t~ret4 := fibo(~n - 1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 132#fiboEXIT >#35#return; 127#L13-1 [2024-10-12 01:00:10,080 INFO L747 eck$LassoCheckResult]: Loop: 127#L13-1 call #t~ret5 := fibo(~n - 2);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 137#fiboEXIT >#35#return; 127#L13-1 [2024-10-12 01:00:10,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:10,082 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2024-10-12 01:00:10,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:10,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454182094] [2024-10-12 01:00:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:10,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:10,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 01:00:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:10,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 01:00:10,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:10,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454182094] [2024-10-12 01:00:10,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454182094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 01:00:10,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 01:00:10,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 01:00:10,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141532146] [2024-10-12 01:00:10,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 01:00:10,274 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 01:00:10,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2024-10-12 01:00:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:10,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989963607] [2024-10-12 01:00:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:10,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 01:00:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 01:00:10,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:10,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989963607] [2024-10-12 01:00:10,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989963607] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 01:00:10,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 01:00:10,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 01:00:10,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421201316] [2024-10-12 01:00:10,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 01:00:10,381 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-12 01:00:10,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:10,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 01:00:10,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 01:00:10,385 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-12 01:00:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:10,465 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-10-12 01:00:10,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-10-12 01:00:10,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:10,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-10-12 01:00:10,470 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-10-12 01:00:10,470 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-10-12 01:00:10,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-10-12 01:00:10,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:10,471 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-12 01:00:10,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-10-12 01:00:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-12 01:00:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-12 01:00:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-10-12 01:00:10,476 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-12 01:00:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 01:00:10,477 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-12 01:00:10,477 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-12 01:00:10,478 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-10-12 01:00:10,478 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:10,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:10,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:10,480 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:10,480 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:10,481 INFO L745 eck$LassoCheckResult]: Stem: 205#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 206#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 199#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 202#$Ultimate##0 ~n := #in~n; 197#L8 assume !(~n < 1); 208#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 195#$Ultimate##0 ~n := #in~n; 198#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 213#fiboFINAL assume true; 211#fiboEXIT >#35#return; 192#L13-1 [2024-10-12 01:00:10,481 INFO L747 eck$LassoCheckResult]: Loop: 192#L13-1 call #t~ret5 := fibo(~n - 2);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume !(1 == ~n); 193#L13 call #t~ret4 := fibo(~n - 1);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume 1 == ~n;#res := 1; 209#fiboFINAL assume true; 210#fiboEXIT >#35#return; 192#L13-1 [2024-10-12 01:00:10,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:10,482 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2024-10-12 01:00:10,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:10,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711431711] [2024-10-12 01:00:10,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:10,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:10,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-12 01:00:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:10,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:10,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711431711] [2024-10-12 01:00:10,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711431711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 01:00:10,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214515748] [2024-10-12 01:00:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:10,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 01:00:10,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:10,601 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 01:00:10,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 01:00:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:10,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 01:00:10,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:10,674 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 01:00:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:10,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214515748] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 01:00:10,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 01:00:10,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-12 01:00:10,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010622550] [2024-10-12 01:00:10,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 01:00:10,776 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 01:00:10,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2024-10-12 01:00:10,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:10,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955973476] [2024-10-12 01:00:10,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:10,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:10,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:10,796 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:10,931 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:10,931 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:10,931 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:10,931 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:10,931 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 01:00:10,931 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:10,932 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:10,932 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:10,932 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2024-10-12 01:00:10,932 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:10,932 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:10,933 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:10,936 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:10,938 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:10,949 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:10,955 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:10,997 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:10,997 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 01:00:10,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:10,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,000 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-12 01:00:11,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:11,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:11,019 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:11,019 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:11,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:11,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,037 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-12 01:00:11,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:11,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:11,058 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:11,059 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:11,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-12 01:00:11,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,081 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-12 01:00:11,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:11,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:11,099 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:11,099 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:11,114 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-12 01:00:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,117 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-12 01:00:11,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:11,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:11,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-12 01:00:11,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,155 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-12 01:00:11,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 01:00:11,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:11,173 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 01:00:11,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-10-12 01:00:11,188 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:11,189 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:11,189 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:11,189 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:11,189 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 01:00:11,189 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,189 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:11,189 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:11,189 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2024-10-12 01:00:11,189 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:11,190 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:11,190 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:11,194 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:11,198 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:11,200 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:11,202 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:11,244 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:11,244 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 01:00:11,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,247 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-12 01:00:11,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:11,262 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:11,262 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:11,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:11,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:11,263 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:11,263 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:11,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:11,265 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:11,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-12 01:00:11,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,277 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-12 01:00:11,279 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:11,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:11,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:11,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:11,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:11,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:11,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:11,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:11,293 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:11,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-12 01:00:11,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,310 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-12 01:00:11,312 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:11,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:11,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:11,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:11,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:11,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:11,323 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:11,323 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:11,325 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:11,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:11,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,339 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-12 01:00:11,343 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:11,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:11,353 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:11,353 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:11,353 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:11,353 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:11,354 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:11,354 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:11,355 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:11,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-10-12 01:00:11,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,371 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-12 01:00:11,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:11,383 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:11,384 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:11,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:11,384 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:11,384 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:11,385 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:11,385 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:11,388 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 01:00:11,395 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 01:00:11,395 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-12 01:00:11,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:11,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:11,397 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:11,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-12 01:00:11,398 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 01:00:11,398 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 01:00:11,398 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 01:00:11,398 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-10-12 01:00:11,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-10-12 01:00:11,411 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 01:00:11,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:11,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 01:00:11,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:11,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-12 01:00:11,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:11,637 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-10-12 01:00:11,638 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 01:00:11,907 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 128 states and 178 transitions. Complement of second has 40 states. [2024-10-12 01:00:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 01:00:11,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-10-12 01:00:11,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2024-10-12 01:00:11,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:11,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2024-10-12 01:00:11,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:11,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2024-10-12 01:00:11,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:11,912 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2024-10-12 01:00:11,920 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 01:00:11,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2024-10-12 01:00:11,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2024-10-12 01:00:11,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2024-10-12 01:00:11,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2024-10-12 01:00:11,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:11,930 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2024-10-12 01:00:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2024-10-12 01:00:11,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2024-10-12 01:00:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (35), 18 states have call predecessors, (35), 19 states have call successors, (35) [2024-10-12 01:00:11,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2024-10-12 01:00:11,951 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2024-10-12 01:00:11,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 01:00:11,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-12 01:00:11,952 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-12 01:00:12,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-10-12 01:00:12,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:12,190 INFO L93 Difference]: Finished difference Result 119 states and 163 transitions. [2024-10-12 01:00:12,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 163 transitions. [2024-10-12 01:00:12,197 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 01:00:12,204 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 158 transitions. [2024-10-12 01:00:12,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2024-10-12 01:00:12,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2024-10-12 01:00:12,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 158 transitions. [2024-10-12 01:00:12,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:12,206 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-10-12 01:00:12,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 158 transitions. [2024-10-12 01:00:12,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-10-12 01:00:12,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (39), 20 states have call predecessors, (39), 22 states have call successors, (39) [2024-10-12 01:00:12,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2024-10-12 01:00:12,225 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-10-12 01:00:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 01:00:12,226 INFO L425 stractBuchiCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-10-12 01:00:12,226 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-12 01:00:12,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 143 transitions. [2024-10-12 01:00:12,229 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-12 01:00:12,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:12,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:12,230 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:12,230 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1] [2024-10-12 01:00:12,231 INFO L745 eck$LassoCheckResult]: Stem: 806#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 807#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 792#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 793#$Ultimate##0 ~n := #in~n; 809#L8 assume !(~n < 1); 810#L10 assume !(1 == ~n); 780#L13 call #t~ret4 := fibo(~n - 1);< 779#$Ultimate##0 ~n := #in~n; 781#L8 assume !(~n < 1); 816#L10 assume !(1 == ~n); 790#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 839#L8 assume !(~n < 1); 837#L10 assume 1 == ~n;#res := 1; 835#fiboFINAL assume true; 834#fiboEXIT >#35#return; 817#L13-1 call #t~ret5 := fibo(~n - 2);< 833#$Ultimate##0 ~n := #in~n; 879#L8 assume ~n < 1;#res := 0; 878#fiboFINAL assume true; 877#fiboEXIT >#37#return; 875#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 872#fiboFINAL assume true; 864#fiboEXIT >#35#return; 813#L13-1 [2024-10-12 01:00:12,231 INFO L747 eck$LassoCheckResult]: Loop: 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#35#return; 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#37#return; 862#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 871#fiboFINAL assume true; 865#fiboEXIT >#35#return; 813#L13-1 [2024-10-12 01:00:12,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2024-10-12 01:00:12,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:12,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895050600] [2024-10-12 01:00:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:12,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 01:00:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 01:00:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 01:00:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,479 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 01:00:12,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:12,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895050600] [2024-10-12 01:00:12,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895050600] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 01:00:12,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108024245] [2024-10-12 01:00:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:12,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 01:00:12,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:12,482 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 01:00:12,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-12 01:00:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 01:00:12,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 01:00:12,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 01:00:12,860 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 01:00:12,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108024245] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 01:00:12,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 01:00:12,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 18 [2024-10-12 01:00:12,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16627433] [2024-10-12 01:00:12,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 01:00:12,861 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 01:00:12,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:12,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1138642743, now seen corresponding path program 1 times [2024-10-12 01:00:12,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:12,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754685504] [2024-10-12 01:00:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:12,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-12 01:00:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 01:00:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 01:00:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 01:00:12,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:12,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754685504] [2024-10-12 01:00:12,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754685504] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 01:00:12,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209675125] [2024-10-12 01:00:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:12,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 01:00:12,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:12,962 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 01:00:12,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-12 01:00:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:12,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 01:00:13,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 01:00:13,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 01:00:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-12 01:00:13,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209675125] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 01:00:13,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 01:00:13,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-10-12 01:00:13,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183215810] [2024-10-12 01:00:13,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 01:00:13,166 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-12 01:00:13,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:13,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-12 01:00:13,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-12 01:00:13,167 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 01:00:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:13,281 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2024-10-12 01:00:13,282 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 76 transitions. [2024-10-12 01:00:13,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:13,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 54 states and 70 transitions. [2024-10-12 01:00:13,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2024-10-12 01:00:13,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2024-10-12 01:00:13,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 70 transitions. [2024-10-12 01:00:13,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:13,286 INFO L218 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 01:00:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 70 transitions. [2024-10-12 01:00:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-10-12 01:00:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2024-10-12 01:00:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-10-12 01:00:13,296 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 01:00:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-12 01:00:13,297 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-10-12 01:00:13,297 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-12 01:00:13,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 70 transitions. [2024-10-12 01:00:13,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-12 01:00:13,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:13,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:13,299 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:13,299 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-12 01:00:13,299 INFO L745 eck$LassoCheckResult]: Stem: 1373#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1374#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 1367#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1368#$Ultimate##0 ~n := #in~n; 1383#L8 assume !(~n < 1); 1382#L10 assume !(1 == ~n); 1355#L13 call #t~ret4 := fibo(~n - 1);< 1354#$Ultimate##0 ~n := #in~n; 1356#L8 assume !(~n < 1); 1376#L10 assume !(1 == ~n); 1360#L13 call #t~ret4 := fibo(~n - 1);< 1361#$Ultimate##0 ~n := #in~n; 1381#L8 assume !(~n < 1); 1398#L10 assume !(1 == ~n); 1371#L13 call #t~ret4 := fibo(~n - 1);< 1361#$Ultimate##0 ~n := #in~n; 1381#L8 assume !(~n < 1); 1398#L10 assume !(1 == ~n); 1371#L13 call #t~ret4 := fibo(~n - 1);< 1361#$Ultimate##0 ~n := #in~n; 1380#L8 assume !(~n < 1); 1377#L10 assume 1 == ~n;#res := 1; 1378#fiboFINAL assume true; 1370#fiboEXIT >#35#return; 1372#L13-1 call #t~ret5 := fibo(~n - 2);< 1397#$Ultimate##0 ~n := #in~n; 1404#L8 assume ~n < 1;#res := 0; 1402#fiboFINAL assume true; 1396#fiboEXIT >#37#return; 1394#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1393#fiboFINAL assume true; 1390#fiboEXIT >#35#return; 1364#L13-1 [2024-10-12 01:00:13,299 INFO L747 eck$LassoCheckResult]: Loop: 1364#L13-1 call #t~ret5 := fibo(~n - 2);< 1359#$Ultimate##0 ~n := #in~n; 1401#L8 assume !(~n < 1); 1399#L10 assume !(1 == ~n); 1363#L13 call #t~ret4 := fibo(~n - 1);< 1359#$Ultimate##0 ~n := #in~n; 1401#L8 assume !(~n < 1); 1399#L10 assume !(1 == ~n); 1363#L13 call #t~ret4 := fibo(~n - 1);< 1359#$Ultimate##0 ~n := #in~n; 1401#L8 assume !(~n < 1); 1399#L10 assume 1 == ~n;#res := 1; 1400#fiboFINAL assume true; 1395#fiboEXIT >#35#return; 1352#L13-1 call #t~ret5 := fibo(~n - 2);< 1351#$Ultimate##0 ~n := #in~n; 1353#L8 assume ~n < 1;#res := 0; 1375#fiboFINAL assume true; 1403#fiboEXIT >#37#return; 1362#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1366#fiboFINAL assume true; 1369#fiboEXIT >#35#return; 1364#L13-1 [2024-10-12 01:00:13,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:13,300 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 2 times [2024-10-12 01:00:13,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:13,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065300667] [2024-10-12 01:00:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:13,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:13,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:13,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-12 01:00:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:13,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 01:00:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:13,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 01:00:13,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:13,549 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 01:00:13,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:13,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065300667] [2024-10-12 01:00:13,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065300667] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 01:00:13,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983798269] [2024-10-12 01:00:13,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 01:00:13,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 01:00:13,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:13,553 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 01:00:13,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-12 01:00:13,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 01:00:13,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 01:00:13,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 01:00:13,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-12 01:00:13,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 01:00:13,898 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 01:00:13,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983798269] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 01:00:13,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 01:00:13,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 18 [2024-10-12 01:00:13,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943661304] [2024-10-12 01:00:13,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 01:00:13,900 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 01:00:13,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:13,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2000232554, now seen corresponding path program 1 times [2024-10-12 01:00:13,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:13,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124391661] [2024-10-12 01:00:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:13,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:13,910 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:13,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:14,110 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:14,110 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:14,110 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:14,110 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:14,110 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 01:00:14,110 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:14,110 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:14,111 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:14,111 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2024-10-12 01:00:14,111 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:14,111 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:14,111 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,116 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,118 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,121 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,123 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,159 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:14,159 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 01:00:14,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:14,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:14,162 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:14,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-12 01:00:14,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:14,165 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:14,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:14,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:14,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:14,199 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:14,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-12 01:00:14,202 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 01:00:14,202 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:14,220 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 01:00:14,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:14,235 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:14,235 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:14,235 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:14,235 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:14,235 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 01:00:14,235 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:14,235 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:14,235 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:14,235 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2024-10-12 01:00:14,235 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:14,235 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:14,236 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,245 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,247 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,250 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:14,290 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:14,290 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 01:00:14,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:14,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:14,292 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:14,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-12 01:00:14,295 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:14,307 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:14,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:14,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:14,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:14,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:14,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:14,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:14,313 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 01:00:14,315 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-12 01:00:14,315 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 01:00:14,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:14,317 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:14,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-12 01:00:14,318 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 01:00:14,318 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 01:00:14,319 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 01:00:14,319 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-10-12 01:00:14,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-10-12 01:00:14,335 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 01:00:14,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:14,389 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 01:00:14,391 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:14,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 01:00:14,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:14,771 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 01:00:14,772 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-12 01:00:14,772 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:14,875 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 61 states and 77 transitions. Complement of second has 11 states. [2024-10-12 01:00:14,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:14,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-10-12 01:00:14,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 32 letters. Loop has 22 letters. [2024-10-12 01:00:14,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:14,878 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 01:00:14,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:14,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:14,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 01:00:14,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:15,199 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 01:00:15,202 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 01:00:15,339 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-12 01:00:15,340 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:15,433 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 61 states and 77 transitions. Complement of second has 11 states. [2024-10-12 01:00:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:15,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-10-12 01:00:15,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 32 letters. Loop has 22 letters. [2024-10-12 01:00:15,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:15,436 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 01:00:15,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:15,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-12 01:00:15,493 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:15,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-12 01:00:15,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-12 01:00:15,808 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 7 loop predicates [2024-10-12 01:00:15,808 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:16,043 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 70 transitions. cyclomatic complexity: 18. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 408 states and 526 transitions. Complement of second has 132 states. [2024-10-12 01:00:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-12 01:00:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 45 transitions. [2024-10-12 01:00:16,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 32 letters. Loop has 22 letters. [2024-10-12 01:00:16,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:16,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 54 letters. Loop has 22 letters. [2024-10-12 01:00:16,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:16,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 32 letters. Loop has 44 letters. [2024-10-12 01:00:16,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:16,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 408 states and 526 transitions. [2024-10-12 01:00:16,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-12 01:00:16,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 408 states to 259 states and 359 transitions. [2024-10-12 01:00:16,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2024-10-12 01:00:16,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2024-10-12 01:00:16,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 259 states and 359 transitions. [2024-10-12 01:00:16,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:16,066 INFO L218 hiAutomatonCegarLoop]: Abstraction has 259 states and 359 transitions. [2024-10-12 01:00:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states and 359 transitions. [2024-10-12 01:00:16,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 187. [2024-10-12 01:00:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 115 states have (on average 1.1391304347826088) internal successors, (131), 122 states have internal predecessors, (131), 43 states have call successors, (48), 25 states have call predecessors, (48), 29 states have return successors, (67), 39 states have call predecessors, (67), 39 states have call successors, (67) [2024-10-12 01:00:16,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 246 transitions. [2024-10-12 01:00:16,090 INFO L240 hiAutomatonCegarLoop]: Abstraction has 187 states and 246 transitions. [2024-10-12 01:00:16,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 01:00:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-10-12 01:00:16,091 INFO L87 Difference]: Start difference. First operand 187 states and 246 transitions. Second operand has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 11 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-12 01:00:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:16,336 INFO L93 Difference]: Finished difference Result 279 states and 369 transitions. [2024-10-12 01:00:16,336 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 279 states and 369 transitions. [2024-10-12 01:00:16,341 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-12 01:00:16,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 279 states to 269 states and 354 transitions. [2024-10-12 01:00:16,367 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 141 [2024-10-12 01:00:16,367 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 141 [2024-10-12 01:00:16,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 269 states and 354 transitions. [2024-10-12 01:00:16,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:16,370 INFO L218 hiAutomatonCegarLoop]: Abstraction has 269 states and 354 transitions. [2024-10-12 01:00:16,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states and 354 transitions. [2024-10-12 01:00:16,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 242. [2024-10-12 01:00:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 148 states have (on average 1.114864864864865) internal successors, (165), 158 states have internal predecessors, (165), 55 states have call successors, (59), 30 states have call predecessors, (59), 39 states have return successors, (94), 53 states have call predecessors, (94), 49 states have call successors, (94) [2024-10-12 01:00:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 318 transitions. [2024-10-12 01:00:16,398 INFO L240 hiAutomatonCegarLoop]: Abstraction has 242 states and 318 transitions. [2024-10-12 01:00:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 01:00:16,400 INFO L425 stractBuchiCegarLoop]: Abstraction has 242 states and 318 transitions. [2024-10-12 01:00:16,401 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-12 01:00:16,402 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 242 states and 318 transitions. [2024-10-12 01:00:16,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-12 01:00:16,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 01:00:16,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 01:00:16,405 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 8, 8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 01:00:16,405 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-12 01:00:16,406 INFO L745 eck$LassoCheckResult]: Stem: 3377#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 3378#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 3366#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 3367#$Ultimate##0 ~n := #in~n; 3408#L8 assume !(~n < 1); 3407#L10 assume !(1 == ~n); 3403#L13 call #t~ret4 := fibo(~n - 1);< 3406#$Ultimate##0 ~n := #in~n; 3405#L8 assume !(~n < 1); 3404#L10 assume !(1 == ~n); 3399#L13 call #t~ret4 := fibo(~n - 1);< 3402#$Ultimate##0 ~n := #in~n; 3401#L8 assume !(~n < 1); 3400#L10 assume !(1 == ~n); 3394#L13 call #t~ret4 := fibo(~n - 1);< 3398#$Ultimate##0 ~n := #in~n; 3396#L8 assume !(~n < 1); 3397#L10 assume !(1 == ~n); 3391#L13 call #t~ret4 := fibo(~n - 1);< 3389#$Ultimate##0 ~n := #in~n; 3393#L8 assume !(~n < 1); 3395#L10 assume !(1 == ~n); 3390#L13 call #t~ret4 := fibo(~n - 1);< 3389#$Ultimate##0 ~n := #in~n; 3393#L8 assume !(~n < 1); 3395#L10 assume !(1 == ~n); 3390#L13 call #t~ret4 := fibo(~n - 1);< 3389#$Ultimate##0 ~n := #in~n; 3392#L8 assume !(~n < 1); 3516#L10 assume 1 == ~n;#res := 1; 3515#fiboFINAL assume true; 3513#fiboEXIT >#35#return; 3510#L13-1 call #t~ret5 := fibo(~n - 2);< 3511#$Ultimate##0 ~n := #in~n; 3514#L8 assume ~n < 1;#res := 0; 3512#fiboFINAL assume true; 3509#fiboEXIT >#37#return; 3507#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3490#fiboFINAL assume true; 3462#fiboEXIT >#35#return; 3448#L13-1 call #t~ret5 := fibo(~n - 2);< 3458#$Ultimate##0 ~n := #in~n; 3526#L8 assume !(~n < 1); 3527#L10 assume !(1 == ~n); 3386#L13 call #t~ret4 := fibo(~n - 1);< 3353#$Ultimate##0 ~n := #in~n; 3388#L8 assume !(~n < 1); 3575#L10 assume !(1 == ~n); 3414#L13 call #t~ret4 := fibo(~n - 1);< 3415#$Ultimate##0 [2024-10-12 01:00:16,406 INFO L747 eck$LassoCheckResult]: Loop: 3415#$Ultimate##0 ~n := #in~n; 3430#L8 assume !(~n < 1); 3426#L10 assume !(1 == ~n); 3413#L13 call #t~ret4 := fibo(~n - 1);< 3415#$Ultimate##0 [2024-10-12 01:00:16,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:16,407 INFO L85 PathProgramCache]: Analyzing trace with hash -844269686, now seen corresponding path program 3 times [2024-10-12 01:00:16,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:16,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438604784] [2024-10-12 01:00:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:16,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:16,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-12 01:00:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:16,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-12 01:00:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:16,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-12 01:00:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 102 proven. 45 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-12 01:00:16,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 01:00:16,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438604784] [2024-10-12 01:00:16,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438604784] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 01:00:16,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139369614] [2024-10-12 01:00:16,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-12 01:00:16,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 01:00:16,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:16,627 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 01:00:16,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-12 01:00:16,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-12 01:00:16,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 01:00:16,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 01:00:16,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 82 proven. 14 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-10-12 01:00:16,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 01:00:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 82 proven. 16 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-10-12 01:00:16,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139369614] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 01:00:16,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 01:00:16,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 10] total 22 [2024-10-12 01:00:16,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181712329] [2024-10-12 01:00:16,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 01:00:16,986 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-12 01:00:16,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:16,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 2 times [2024-10-12 01:00:16,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 01:00:16,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560283323] [2024-10-12 01:00:16,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 01:00:16,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 01:00:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:16,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 01:00:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 01:00:16,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 01:00:17,026 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:17,027 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:17,027 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:17,027 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:17,027 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 01:00:17,027 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,027 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:17,027 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:17,027 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration6_Loop [2024-10-12 01:00:17,028 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:17,028 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:17,028 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,031 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,034 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,040 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,043 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,074 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:17,074 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 01:00:17,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:17,076 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:17,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-12 01:00:17,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:17,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:17,093 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:17,094 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:17,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:17,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:17,111 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:17,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-10-12 01:00:17,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:17,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:17,134 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 01:00:17,134 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 01:00:17,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:17,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:17,152 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:17,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-10-12 01:00:17,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 01:00:17,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:17,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:17,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:17,189 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:17,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-10-12 01:00:17,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 01:00:17,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 01:00:17,233 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 01:00:17,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:17,239 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 01:00:17,239 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 01:00:17,239 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 01:00:17,239 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 01:00:17,240 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 01:00:17,240 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,240 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 01:00:17,240 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 01:00:17,240 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration6_Loop [2024-10-12 01:00:17,240 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 01:00:17,240 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 01:00:17,241 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,245 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,247 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,249 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,255 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 01:00:17,282 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 01:00:17,284 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 01:00:17,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:17,287 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:17,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-10-12 01:00:17,289 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:17,302 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:17,302 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:17,302 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:17,302 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:17,302 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:17,303 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:17,303 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:17,305 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:17,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2024-10-12 01:00:17,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:17,323 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:17,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-10-12 01:00:17,326 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:17,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:17,339 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:17,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:17,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:17,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:17,340 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:17,340 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:17,341 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:17,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:17,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:17,359 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:17,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-10-12 01:00:17,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:17,375 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:17,375 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:17,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:17,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:17,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:17,376 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:17,376 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:17,381 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 01:00:17,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:17,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:17,398 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:17,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-10-12 01:00:17,401 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 01:00:17,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 01:00:17,413 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 01:00:17,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 01:00:17,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 01:00:17,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 01:00:17,414 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 01:00:17,414 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 01:00:17,418 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 01:00:17,420 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-12 01:00:17,420 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 01:00:17,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 01:00:17,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 01:00:17,423 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 01:00:17,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-10-12 01:00:17,426 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 01:00:17,426 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 01:00:17,426 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 01:00:17,426 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-10-12 01:00:17,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:17,445 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 01:00:17,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:17,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 01:00:17,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:17,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 01:00:17,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:17,733 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-12 01:00:17,733 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 01:00:17,800 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 258 states and 334 transitions. Complement of second has 15 states. [2024-10-12 01:00:17,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 01:00:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-10-12 01:00:17,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 49 letters. Loop has 4 letters. [2024-10-12 01:00:17,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:17,802 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 01:00:17,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:17,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 01:00:17,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:17,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:18,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 01:00:18,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:18,139 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-12 01:00:18,139 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 01:00:18,202 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 258 states and 334 transitions. Complement of second has 15 states. [2024-10-12 01:00:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:18,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 01:00:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-10-12 01:00:18,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 49 letters. Loop has 4 letters. [2024-10-12 01:00:18,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:18,206 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 01:00:18,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 01:00:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:18,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-12 01:00:18,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:18,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 01:00:18,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-12 01:00:18,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 01:00:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 01:00:18,489 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-12 01:00:18,489 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 01:00:18,559 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 242 states and 318 transitions. cyclomatic complexity: 80. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 317 states and 394 transitions. Complement of second has 19 states. [2024-10-12 01:00:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-12 01:00:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-12 01:00:18,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2024-10-12 01:00:18,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2024-10-12 01:00:18,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:18,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 53 letters. Loop has 4 letters. [2024-10-12 01:00:18,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:18,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 49 letters. Loop has 8 letters. [2024-10-12 01:00:18,561 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 01:00:18,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 317 states and 394 transitions. [2024-10-12 01:00:18,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-12 01:00:18,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 317 states to 254 states and 330 transitions. [2024-10-12 01:00:18,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 109 [2024-10-12 01:00:18,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 112 [2024-10-12 01:00:18,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 254 states and 330 transitions. [2024-10-12 01:00:18,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 01:00:18,569 INFO L218 hiAutomatonCegarLoop]: Abstraction has 254 states and 330 transitions. [2024-10-12 01:00:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states and 330 transitions. [2024-10-12 01:00:18,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2024-10-12 01:00:18,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 156 states have (on average 1.108974358974359) internal successors, (173), 166 states have internal predecessors, (173), 55 states have call successors, (59), 30 states have call predecessors, (59), 39 states have return successors, (94), 53 states have call predecessors, (94), 49 states have call successors, (94) [2024-10-12 01:00:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 326 transitions. [2024-10-12 01:00:18,588 INFO L240 hiAutomatonCegarLoop]: Abstraction has 250 states and 326 transitions. [2024-10-12 01:00:18,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 01:00:18,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-12 01:00:18,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2024-10-12 01:00:18,591 INFO L87 Difference]: Start difference. First operand 250 states and 326 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 16 states have internal predecessors, (48), 12 states have call successors, (15), 9 states have call predecessors, (15), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-12 01:00:18,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 01:00:18,923 INFO L93 Difference]: Finished difference Result 323 states and 430 transitions. [2024-10-12 01:00:18,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 323 states and 430 transitions. [2024-10-12 01:00:18,927 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 01:00:18,928 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 323 states to 0 states and 0 transitions. [2024-10-12 01:00:18,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-12 01:00:18,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-12 01:00:18,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-12 01:00:18,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 01:00:18,929 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:18,929 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 01:00:18,931 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 01:00:18,931 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-12 01:00:18,931 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-12 01:00:18,931 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 01:00:18,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-12 01:00:18,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 01:00:18 BoogieIcfgContainer [2024-10-12 01:00:18,940 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-12 01:00:18,941 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 01:00:18,941 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 01:00:18,941 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 01:00:18,942 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 01:00:08" (3/4) ... [2024-10-12 01:00:18,943 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 01:00:18,945 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 01:00:18,945 INFO L158 Benchmark]: Toolchain (without parser) took 10862.10ms. Allocated memory was 142.6MB in the beginning and 243.3MB in the end (delta: 100.7MB). Free memory was 72.6MB in the beginning and 110.6MB in the end (delta: -38.0MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2024-10-12 01:00:18,946 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 142.6MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 01:00:18,946 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.79ms. Allocated memory was 142.6MB in the beginning and 201.3MB in the end (delta: 58.7MB). Free memory was 72.5MB in the beginning and 172.9MB in the end (delta: -100.4MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2024-10-12 01:00:18,946 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.70ms. Allocated memory is still 201.3MB. Free memory was 172.9MB in the beginning and 171.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 01:00:18,947 INFO L158 Benchmark]: Boogie Preprocessor took 24.91ms. Allocated memory is still 201.3MB. Free memory was 171.8MB in the beginning and 170.8MB in the end (delta: 997.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 01:00:18,947 INFO L158 Benchmark]: RCFGBuilder took 285.38ms. Allocated memory is still 201.3MB. Free memory was 170.8MB in the beginning and 160.3MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-12 01:00:18,947 INFO L158 Benchmark]: BuchiAutomizer took 10269.53ms. Allocated memory was 201.3MB in the beginning and 243.3MB in the end (delta: 41.9MB). Free memory was 159.3MB in the beginning and 110.6MB in the end (delta: 48.7MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. [2024-10-12 01:00:18,947 INFO L158 Benchmark]: Witness Printer took 4.00ms. Allocated memory is still 243.3MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 01:00:18,949 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 142.6MB. Free memory is still 92.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.79ms. Allocated memory was 142.6MB in the beginning and 201.3MB in the end (delta: 58.7MB). Free memory was 72.5MB in the beginning and 172.9MB in the end (delta: -100.4MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.70ms. Allocated memory is still 201.3MB. Free memory was 172.9MB in the beginning and 171.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.91ms. Allocated memory is still 201.3MB. Free memory was 171.8MB in the beginning and 170.8MB in the end (delta: 997.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 285.38ms. Allocated memory is still 201.3MB. Free memory was 170.8MB in the beginning and 160.3MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 10269.53ms. Allocated memory was 201.3MB in the beginning and 243.3MB in the end (delta: 41.9MB). Free memory was 159.3MB in the beginning and 110.6MB in the end (delta: 48.7MB). Peak memory consumption was 90.7MB. Max. memory is 16.1GB. * Witness Printer took 4.00ms. Allocated memory is still 243.3MB. Free memory is still 110.6MB. 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 9 terminating modules (5 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 11 locations. One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. 5 modules have a trivial ranking function, the largest among these consists of 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.2s and 7 iterations. TraceHistogramMax:10. Analysis of lassos took 5.1s. Construction of modules took 0.9s. Büchi inclusion checks took 3.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 8. Automata minimization 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 125 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/26 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 423 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 509 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 333 mSDsCounter, 340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1066 IncrementalHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 340 mSolverCounterUnsat, 176 mSDtfsCounter, 1066 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI2 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp78 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf91 smp82 dnf100 smp100 tf113 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-12 01:00:18,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:19,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-12 01:00:19,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-12 01:00:19,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-12 01:00:19,778 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 01:00:19,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE