./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 08:49:31,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 08:49:31,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-17 08:49:31,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 08:49:31,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 08:49:31,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder.Remove goto edges from RCFG [2024-11-17 08:49:31,381 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 08:49:31,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 08:49:31,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 08:49:31,387 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 08:49:31,387 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 08:49:31,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 08:49:31,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 08:49:31,388 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 08:49:31,389 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-17 08:49:31,389 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-17 08:49:31,390 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-17 08:49:31,391 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-17 08:49:31,391 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-17 08:49:31,391 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-17 08:49:31,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 08:49:31,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-17 08:49:31,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 08:49:31,393 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 08:49:31,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 08:49:31,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 08:49:31,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-17 08:49:31,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-17 08:49:31,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-17 08:49:31,394 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 08:49:31,394 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 08:49:31,395 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 08:49:31,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 08:49:31,396 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-17 08:49:31,396 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 08:49:31,396 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 08:49:31,397 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 08:49:31,397 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 08:49:31,397 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 08:49:31,398 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-17 08:49:31,398 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2024-11-17 08:49:31,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 08:49:31,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 08:49:31,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 08:49:31,684 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 08:49:31,685 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 08:49:31,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-11-17 08:49:33,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 08:49:33,332 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 08:49:33,333 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-11-17 08:49:33,346 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df844be9d/248dd5921b4b46d8b48e99c4aedb54c8/FLAGde538b7ea [2024-11-17 08:49:33,368 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df844be9d/248dd5921b4b46d8b48e99c4aedb54c8 [2024-11-17 08:49:33,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 08:49:33,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 08:49:33,377 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 08:49:33,378 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 08:49:33,384 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 08:49:33,385 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10de06cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33, skipping insertion in model container [2024-11-17 08:49:33,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,408 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 08:49:33,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:49:33,630 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 08:49:33,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 08:49:33,667 INFO L204 MainTranslator]: Completed translation [2024-11-17 08:49:33,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33 WrapperNode [2024-11-17 08:49:33,667 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 08:49:33,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 08:49:33,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 08:49:33,670 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 08:49:33,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,700 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-17 08:49:33,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 08:49:33,702 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 08:49:33,702 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 08:49:33,702 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 08:49:33,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,713 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,725 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-17 08:49:33,725 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,726 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,731 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 08:49:33,737 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 08:49:33,737 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 08:49:33,737 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 08:49:33,738 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (1/1) ... [2024-11-17 08:49:33,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:33,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:33,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:33,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-17 08:49:33,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 08:49:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 08:49:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-17 08:49:33,832 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-17 08:49:33,832 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-17 08:49:33,833 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-17 08:49:33,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 08:49:33,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 08:49:33,891 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 08:49:33,893 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 08:49:33,982 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L25: havoc #t~ret6;havoc #t~ret7; [2024-11-17 08:49:33,995 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: havoc #t~ret4;havoc #t~ret5; [2024-11-17 08:49:34,004 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-17 08:49:34,005 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 08:49:34,017 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 08:49:34,017 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 08:49:34,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:49:34 BoogieIcfgContainer [2024-11-17 08:49:34,018 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 08:49:34,019 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-17 08:49:34,019 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-17 08:49:34,023 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-17 08:49:34,023 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:49:34,024 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.11 08:49:33" (1/3) ... [2024-11-17 08:49:34,024 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56f1abc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:49:34, skipping insertion in model container [2024-11-17 08:49:34,025 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:49:34,025 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 08:49:33" (2/3) ... [2024-11-17 08:49:34,025 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56f1abc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.11 08:49:34, skipping insertion in model container [2024-11-17 08:49:34,025 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-17 08:49:34,025 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:49:34" (3/3) ... [2024-11-17 08:49:34,029 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2024-11-17 08:49:34,098 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-17 08:49:34,098 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-17 08:49:34,098 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-17 08:49:34,100 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-17 08:49:34,100 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-17 08:49:34,100 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-17 08:49:34,100 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-17 08:49:34,100 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-17 08:49:34,105 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 08:49:34,145 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-17 08:49:34,146 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:34,146 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:34,151 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-17 08:49:34,151 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:34,151 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-17 08:49:34,151 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-17 08:49:34,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-17 08:49:34,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:34,154 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:34,155 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-17 08:49:34,155 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:34,160 INFO L745 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 24#ULTIMATE.init_returnLabel#1true assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 20#L39-1true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6#fibo1ENTRYtrue [2024-11-17 08:49:34,160 INFO L747 eck$LassoCheckResult]: Loop: 6#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 5#L15-3true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 10#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 25#L25-3true call #t~ret6 := fibo1(~n - 1);< 6#fibo1ENTRYtrue [2024-11-17 08:49:34,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:34,165 INFO L85 PathProgramCache]: Analyzing trace with hash 39712, now seen corresponding path program 1 times [2024-11-17 08:49:34,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:34,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819062035] [2024-11-17 08:49:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:34,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:34,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:34,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash -255777251, now seen corresponding path program 1 times [2024-11-17 08:49:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:34,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963233685] [2024-11-17 08:49:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:34,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:34,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:34,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:34,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:34,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1413493308, now seen corresponding path program 1 times [2024-11-17 08:49:34,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:34,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229040273] [2024-11-17 08:49:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:34,352 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:34,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:34,618 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:34,619 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:34,619 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:34,620 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:34,620 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:49:34,620 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:34,620 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:34,620 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:34,621 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2024-11-17 08:49:34,621 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:34,621 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:34,636 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:34,643 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:34,649 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:34,653 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:34,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:34,659 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:34,671 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:34,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:34,753 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:34,754 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:49:34,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:34,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:34,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:34,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-17 08:49:34,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:34,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:34,777 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:34,777 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:34,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-17 08:49:34,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:34,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:34,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:34,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-17 08:49:34,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:34,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:34,807 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:34,807 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:34,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-17 08:49:34,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:34,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:34,820 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:34,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-17 08:49:34,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:34,823 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:34,836 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:34,836 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:34,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-17 08:49:34,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:34,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:34,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:34,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-17 08:49:34,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:34,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:34,866 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:34,866 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:34,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-17 08:49:34,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:34,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:34,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:34,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-17 08:49:34,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:34,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:34,893 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:34,893 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:34,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-17 08:49:34,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:34,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:34,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:34,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-17 08:49:34,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:34,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:34,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-17 08:49:34,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:34,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:34,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:34,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-17 08:49:34,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:49:34,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:34,998 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:49:35,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-17 08:49:35,003 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:35,004 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:35,004 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:35,004 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:35,004 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:49:35,004 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:35,004 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:35,004 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:35,004 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2024-11-17 08:49:35,004 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:35,004 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:35,006 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:35,010 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:35,013 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:35,019 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:35,021 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:35,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:35,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:35,039 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:35,107 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:35,111 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:49:35,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:35,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:35,114 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:35,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-17 08:49:35,115 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:35,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:35,127 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:35,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:35,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:35,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:35,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:35,130 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:35,134 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:35,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-17 08:49:35,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:35,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:35,153 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:35,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-17 08:49:35,155 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:35,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:35,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:35,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:35,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:35,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:35,172 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:35,172 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:35,175 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:35,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:35,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:35,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:35,194 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:35,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-17 08:49:35,196 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:35,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:35,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:35,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:35,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:35,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:35,210 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:35,210 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:35,212 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:35,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-17 08:49:35,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:35,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:35,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:35,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-11-17 08:49:35,233 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:35,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:35,246 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:35,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:35,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:35,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:35,248 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:35,248 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:35,250 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:35,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-11-17 08:49:35,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:35,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:35,267 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:35,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-17 08:49:35,269 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:35,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:35,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:35,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:35,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:35,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:35,283 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:35,283 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:35,285 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:35,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:35,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:35,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:35,299 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:35,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-17 08:49:35,300 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:35,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:35,311 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:35,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:35,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:35,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:35,312 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:35,312 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:35,314 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:49:35,318 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:49:35,318 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:49:35,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:35,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:35,342 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:35,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-17 08:49:35,344 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:49:35,344 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:49:35,345 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:49:35,345 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2024-11-17 08:49:35,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-17 08:49:35,358 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:49:35,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:35,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 08:49:35,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:35,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 08:49:35,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:49:35,553 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2024-11-17 08:49:35,560 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:49:35,747 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 107 transitions. Complement of second has 28 states. [2024-11-17 08:49:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:35,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 08:49:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 19 transitions. [2024-11-17 08:49:35,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-17 08:49:35,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:35,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 11 letters. Loop has 8 letters. [2024-11-17 08:49:35,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:35,763 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 19 transitions. Stem has 3 letters. Loop has 16 letters. [2024-11-17 08:49:35,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:35,764 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 77 states and 107 transitions. [2024-11-17 08:49:35,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-17 08:49:35,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 77 states to 55 states and 75 transitions. [2024-11-17 08:49:35,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2024-11-17 08:49:35,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2024-11-17 08:49:35,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 75 transitions. [2024-11-17 08:49:35,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:35,780 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 75 transitions. [2024-11-17 08:49:35,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 75 transitions. [2024-11-17 08:49:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-17 08:49:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2024-11-17 08:49:35,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-17 08:49:35,808 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-17 08:49:35,808 INFO L425 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-17 08:49:35,808 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-17 08:49:35,808 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2024-11-17 08:49:35,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-17 08:49:35,810 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:35,810 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:35,811 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:35,811 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:35,812 INFO L745 eck$LassoCheckResult]: Stem: 194#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 195#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 207#L39-1 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 214#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 206#L15-3 call #t~ret4 := fibo2(~n - 1);< 208#fibo2ENTRY ~n := #in~n; 232#L20 assume !(~n < 1); 235#L22 assume !(1 == ~n); 202#L25-3 call #t~ret6 := fibo1(~n - 1);< 216#fibo1ENTRY ~n := #in~n; 218#L10 assume ~n < 1;#res := 0; 203#fibo1FINAL assume true; 204#fibo1EXIT >#37#return; 219#L25-2 [2024-11-17 08:49:35,812 INFO L747 eck$LassoCheckResult]: Loop: 219#L25-2 call #t~ret7 := fibo1(~n - 2);< 220#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 212#L15-3 call #t~ret4 := fibo2(~n - 1);< 239#fibo2ENTRY ~n := #in~n; 238#L20 assume !(~n < 1); 236#L22 assume !(1 == ~n); 222#L25-3 call #t~ret6 := fibo1(~n - 1);< 220#fibo1ENTRY ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 223#fibo1FINAL assume true; 237#fibo1EXIT >#37#return; 219#L25-2 [2024-11-17 08:49:35,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:35,813 INFO L85 PathProgramCache]: Analyzing trace with hash -130896422, now seen corresponding path program 1 times [2024-11-17 08:49:35,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:35,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608279328] [2024-11-17 08:49:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:35,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:35,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 08:49:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 08:49:35,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:49:35,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608279328] [2024-11-17 08:49:35,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608279328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:49:35,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 08:49:35,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 08:49:35,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975649588] [2024-11-17 08:49:35,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:49:35,977 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-17 08:49:35,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:35,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1646684539, now seen corresponding path program 1 times [2024-11-17 08:49:35,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:35,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204249361] [2024-11-17 08:49:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:35,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:36,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-17 08:49:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 08:49:36,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:49:36,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204249361] [2024-11-17 08:49:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204249361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 08:49:36,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 08:49:36,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 08:49:36,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405891563] [2024-11-17 08:49:36,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 08:49:36,062 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:49:36,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:49:36,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 08:49:36,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 08:49:36,066 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-17 08:49:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:49:36,149 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-11-17 08:49:36,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2024-11-17 08:49:36,151 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-17 08:49:36,153 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 60 states and 79 transitions. [2024-11-17 08:49:36,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2024-11-17 08:49:36,154 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2024-11-17 08:49:36,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 79 transitions. [2024-11-17 08:49:36,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:36,154 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-17 08:49:36,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 79 transitions. [2024-11-17 08:49:36,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-17 08:49:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 44 states have internal predecessors, (49), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-17 08:49:36,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 79 transitions. [2024-11-17 08:49:36,160 INFO L240 hiAutomatonCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-17 08:49:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 08:49:36,162 INFO L425 stractBuchiCegarLoop]: Abstraction has 60 states and 79 transitions. [2024-11-17 08:49:36,162 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-17 08:49:36,162 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 60 states and 79 transitions. [2024-11-17 08:49:36,163 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2024-11-17 08:49:36,163 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:36,163 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:36,165 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:36,165 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:36,165 INFO L745 eck$LassoCheckResult]: Stem: 331#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 332#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 342#L39-1 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 351#fibo1ENTRY ~n := #in~n; 352#L10 assume !(~n < 1); 362#L12 assume !(1 == ~n); 341#L15-3 call #t~ret4 := fibo2(~n - 1);< 343#fibo2ENTRY ~n := #in~n; 370#L20 assume !(~n < 1); 373#L22 assume !(1 == ~n); 339#L25-3 call #t~ret6 := fibo1(~n - 1);< 353#fibo1ENTRY ~n := #in~n; 355#L10 assume !(~n < 1); 361#L12 assume 1 == ~n;#res := 1; 344#fibo1FINAL assume true; 345#fibo1EXIT >#37#return; 356#L25-2 [2024-11-17 08:49:36,166 INFO L747 eck$LassoCheckResult]: Loop: 356#L25-2 call #t~ret7 := fibo1(~n - 2);< 357#fibo1ENTRY ~n := #in~n; 382#L10 assume !(~n < 1); 383#L12 assume !(1 == ~n); 349#L15-3 call #t~ret4 := fibo2(~n - 1);< 384#fibo2ENTRY ~n := #in~n; 376#L20 assume !(~n < 1); 374#L22 assume !(1 == ~n); 359#L25-3 call #t~ret6 := fibo1(~n - 1);< 357#fibo1ENTRY ~n := #in~n; 382#L10 assume !(~n < 1); 383#L12 assume 1 == ~n;#res := 1; 380#fibo1FINAL assume true; 378#fibo1EXIT >#37#return; 356#L25-2 [2024-11-17 08:49:36,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:36,166 INFO L85 PathProgramCache]: Analyzing trace with hash 237378914, now seen corresponding path program 1 times [2024-11-17 08:49:36,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:36,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776447067] [2024-11-17 08:49:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:36,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:36,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-17 08:49:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:36,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 08:49:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:49:36,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:49:36,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776447067] [2024-11-17 08:49:36,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776447067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:49:36,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799818649] [2024-11-17 08:49:36,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:36,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:49:36,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:36,328 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:49:36,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 08:49:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:36,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 08:49:36,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:49:36,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:49:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:49:36,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799818649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:49:36,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:49:36,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-17 08:49:36,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43182851] [2024-11-17 08:49:36,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:49:36,579 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-17 08:49:36,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:36,579 INFO L85 PathProgramCache]: Analyzing trace with hash -492186143, now seen corresponding path program 1 times [2024-11-17 08:49:36,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:36,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653734668] [2024-11-17 08:49:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:36,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:36,586 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:36,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:36,815 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:36,815 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:36,815 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:36,815 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:36,816 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:49:36,816 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:36,816 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:36,816 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:36,816 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2024-11-17 08:49:36,816 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:36,816 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:36,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:36,822 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:36,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:36,827 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:36,829 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:36,832 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:36,835 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:36,841 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:36,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:36,897 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:36,897 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:49:36,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:36,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:36,898 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:36,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-17 08:49:36,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:36,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:36,912 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:36,912 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:36,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-17 08:49:36,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:36,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:36,924 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:36,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-17 08:49:36,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:36,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:36,937 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:36,937 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:36,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:36,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:36,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:36,950 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:36,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-17 08:49:36,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:36,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:36,963 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:36,963 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:36,974 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-17 08:49:36,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:36,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:36,975 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:36,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-17 08:49:36,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:36,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:36,989 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:36,989 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:37,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:37,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,001 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-17 08:49:37,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:37,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:37,016 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:37,016 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=1} Honda state: {fibo2_#t~ret6=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:37,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2024-11-17 08:49:37,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,030 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-17 08:49:37,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:37,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:37,043 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:37,044 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:37,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-17 08:49:37,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,056 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-17 08:49:37,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:37,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:37,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-17 08:49:37,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,081 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-17 08:49:37,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:49:37,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:37,095 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:49:37,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:37,111 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:37,111 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:37,111 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:37,111 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:37,111 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:49:37,111 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,111 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:37,112 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:37,112 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2024-11-17 08:49:37,112 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:37,112 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:37,113 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:37,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:37,120 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:37,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:37,125 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:37,129 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:37,135 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:37,139 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:37,141 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:37,187 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:37,187 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:49:37,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,188 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-11-17 08:49:37,190 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:37,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:37,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:37,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:37,200 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:37,200 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:37,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:37,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:37,205 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:37,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2024-11-17 08:49:37,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,217 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-17 08:49:37,219 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:37,228 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:37,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:37,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:37,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:37,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:37,231 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:37,231 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:37,232 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:37,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-17 08:49:37,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,243 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-17 08:49:37,245 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:37,255 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:37,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:37,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:37,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:37,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:37,256 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:37,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:37,259 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:37,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-11-17 08:49:37,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,276 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-17 08:49:37,278 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:37,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:37,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:37,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:37,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:37,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:37,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:37,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:37,292 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:37,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:37,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,308 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-17 08:49:37,312 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 [2024-11-17 08:49:37,326 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:37,326 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:37,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:37,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:37,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:37,327 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:37,327 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:37,329 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:37,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:37,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,346 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-17 08:49:37,349 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:37,361 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:37,361 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:37,361 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:37,362 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:37,362 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:37,364 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:37,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:37,366 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:49:37,370 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:49:37,371 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:49:37,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:37,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:37,375 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:37,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-17 08:49:37,377 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:49:37,377 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:49:37,377 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:49:37,377 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2024-11-17 08:49:37,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-11-17 08:49:37,393 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:49:37,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:37,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 08:49:37,434 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:37,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-17 08:49:37,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:49:37,663 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2024-11-17 08:49:37,663 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 08:49:37,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-11-17 08:49:38,166 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 60 states and 79 transitions. cyclomatic complexity: 21. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 206 states and 282 transitions. Complement of second has 48 states. [2024-11-17 08:49:38,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:38,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 08:49:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 79 transitions. [2024-11-17 08:49:38,168 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 14 letters. [2024-11-17 08:49:38,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:38,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 30 letters. Loop has 14 letters. [2024-11-17 08:49:38,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:38,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 79 transitions. Stem has 16 letters. Loop has 28 letters. [2024-11-17 08:49:38,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:38,170 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 282 transitions. [2024-11-17 08:49:38,178 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-17 08:49:38,182 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 182 states and 254 transitions. [2024-11-17 08:49:38,186 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 112 [2024-11-17 08:49:38,187 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2024-11-17 08:49:38,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 254 transitions. [2024-11-17 08:49:38,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:38,189 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 254 transitions. [2024-11-17 08:49:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 254 transitions. [2024-11-17 08:49:38,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 154. [2024-11-17 08:49:38,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 96 states have (on average 1.28125) internal successors, (123), 104 states have internal predecessors, (123), 35 states have call successors, (36), 19 states have call predecessors, (36), 23 states have return successors, (52), 30 states have call predecessors, (52), 33 states have call successors, (52) [2024-11-17 08:49:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 211 transitions. [2024-11-17 08:49:38,221 INFO L240 hiAutomatonCegarLoop]: Abstraction has 154 states and 211 transitions. [2024-11-17 08:49:38,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:49:38,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 08:49:38,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-17 08:49:38,223 INFO L87 Difference]: Start difference. First operand 154 states and 211 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-17 08:49:38,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:49:38,417 INFO L93 Difference]: Finished difference Result 191 states and 256 transitions. [2024-11-17 08:49:38,417 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 256 transitions. [2024-11-17 08:49:38,421 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-17 08:49:38,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 248 transitions. [2024-11-17 08:49:38,425 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2024-11-17 08:49:38,425 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2024-11-17 08:49:38,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 248 transitions. [2024-11-17 08:49:38,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:38,426 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 248 transitions. [2024-11-17 08:49:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 248 transitions. [2024-11-17 08:49:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2024-11-17 08:49:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (58), 34 states have call predecessors, (58), 37 states have call successors, (58) [2024-11-17 08:49:38,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 233 transitions. [2024-11-17 08:49:38,440 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 233 transitions. [2024-11-17 08:49:38,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 08:49:38,445 INFO L425 stractBuchiCegarLoop]: Abstraction has 172 states and 233 transitions. [2024-11-17 08:49:38,445 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-17 08:49:38,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 233 transitions. [2024-11-17 08:49:38,447 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2024-11-17 08:49:38,447 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:38,447 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:38,450 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:38,450 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:38,450 INFO L745 eck$LassoCheckResult]: Stem: 1234#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1235#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1248#L39-1 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1275#fibo1ENTRY ~n := #in~n; 1293#L10 assume !(~n < 1); 1287#L12 assume !(1 == ~n); 1244#L15-3 call #t~ret4 := fibo2(~n - 1);< 1249#fibo2ENTRY ~n := #in~n; 1305#L20 assume !(~n < 1); 1243#L22 assume !(1 == ~n); 1245#L25-3 call #t~ret6 := fibo1(~n - 1);< 1268#fibo1ENTRY ~n := #in~n; 1270#L10 assume !(~n < 1); 1336#L12 assume !(1 == ~n); 1290#L15-3 call #t~ret4 := fibo2(~n - 1);< 1335#fibo2ENTRY ~n := #in~n; 1331#L20 assume !(~n < 1); 1332#L22 assume !(1 == ~n); 1269#L25-3 call #t~ret6 := fibo1(~n - 1);< 1268#fibo1ENTRY ~n := #in~n; 1270#L10 assume !(~n < 1); 1336#L12 assume !(1 == ~n); 1290#L15-3 call #t~ret4 := fibo2(~n - 1);< 1335#fibo2ENTRY ~n := #in~n; 1331#L20 assume ~n < 1;#res := 0; 1289#fibo2FINAL assume true; 1291#fibo2EXIT >#41#return; 1300#L15-2 call #t~ret5 := fibo2(~n - 2);< 1310#fibo2ENTRY ~n := #in~n; 1299#L20 assume !(~n < 1); 1301#L22 assume !(1 == ~n); 1269#L25-3 call #t~ret6 := fibo1(~n - 1);< 1268#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1340#L12 assume 1 == ~n;#res := 1; 1341#fibo1FINAL assume true; 1337#fibo1EXIT >#37#return; 1266#L25-2 call #t~ret7 := fibo1(~n - 2);< 1284#fibo1ENTRY ~n := #in~n; 1330#L10 assume !(~n < 1); 1329#L12 assume !(1 == ~n); 1283#L15-3 call #t~ret4 := fibo2(~n - 1);< 1325#fibo2ENTRY ~n := #in~n; 1321#L20 assume ~n < 1;#res := 0; 1322#fibo2FINAL assume true; 1326#fibo2EXIT >#41#return; 1282#L15-2 call #t~ret5 := fibo2(~n - 2);< 1325#fibo2ENTRY ~n := #in~n; 1321#L20 assume !(~n < 1); 1318#L22 assume 1 == ~n;#res := 1; 1319#fibo2FINAL assume true; 1374#fibo2EXIT >#39#return; 1370#L15-1 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1367#fibo1FINAL assume true; 1355#fibo1EXIT >#35#return; 1361#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1378#fibo2FINAL assume true; 1376#fibo2EXIT >#39#return; 1370#L15-1 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1367#fibo1FINAL assume true; 1355#fibo1EXIT >#37#return; 1356#L25-2 call #t~ret7 := fibo1(~n - 2);< 1363#fibo1ENTRY ~n := #in~n; 1381#L10 assume ~n < 1;#res := 0; 1382#fibo1FINAL assume true; 1383#fibo1EXIT >#35#return; 1361#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1378#fibo2FINAL assume true; 1376#fibo2EXIT >#41#return; 1365#L15-2 [2024-11-17 08:49:38,451 INFO L747 eck$LassoCheckResult]: Loop: 1365#L15-2 call #t~ret5 := fibo2(~n - 2);< 1377#fibo2ENTRY ~n := #in~n; 1372#L20 assume !(~n < 1); 1369#L22 assume !(1 == ~n); 1360#L25-3 call #t~ret6 := fibo1(~n - 1);< 1363#fibo1ENTRY ~n := #in~n; 1381#L10 assume !(~n < 1); 1379#L12 assume !(1 == ~n); 1364#L15-3 call #t~ret4 := fibo2(~n - 1);< 1377#fibo2ENTRY ~n := #in~n; 1372#L20 assume !(~n < 1); 1369#L22 assume !(1 == ~n); 1360#L25-3 call #t~ret6 := fibo1(~n - 1);< 1363#fibo1ENTRY ~n := #in~n; 1381#L10 assume !(~n < 1); 1379#L12 assume 1 == ~n;#res := 1; 1380#fibo1FINAL assume true; 1384#fibo1EXIT >#37#return; 1356#L25-2 call #t~ret7 := fibo1(~n - 2);< 1363#fibo1ENTRY ~n := #in~n; 1381#L10 assume ~n < 1;#res := 0; 1382#fibo1FINAL assume true; 1383#fibo1EXIT >#35#return; 1361#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1378#fibo2FINAL assume true; 1376#fibo2EXIT >#41#return; 1365#L15-2 [2024-11-17 08:49:38,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1382290243, now seen corresponding path program 1 times [2024-11-17 08:49:38,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:38,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209055871] [2024-11-17 08:49:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:38,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-17 08:49:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:38,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-17 08:49:38,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-17 08:49:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-17 08:49:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,812 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 20 proven. 56 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-17 08:49:38,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:49:38,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209055871] [2024-11-17 08:49:38,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209055871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:49:38,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95274349] [2024-11-17 08:49:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:38,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:49:38,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:38,816 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:49:38,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-17 08:49:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:38,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 08:49:38,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 59 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-17 08:49:39,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:49:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 60 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-17 08:49:39,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95274349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:49:39,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:49:39,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 28 [2024-11-17 08:49:39,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148546802] [2024-11-17 08:49:39,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:49:39,549 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-17 08:49:39,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:39,549 INFO L85 PathProgramCache]: Analyzing trace with hash 304778993, now seen corresponding path program 1 times [2024-11-17 08:49:39,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:39,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035591337] [2024-11-17 08:49:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:39,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:39,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:39,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:39,803 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:39,803 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:39,804 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:39,804 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:39,804 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:49:39,804 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:39,804 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:39,804 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:39,804 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration4_Loop [2024-11-17 08:49:39,804 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:39,804 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:39,805 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:39,807 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:39,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:39,811 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:39,813 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:39,815 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:39,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:39,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:39,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:39,866 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:39,867 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:49:39,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:39,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:39,869 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:39,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-11-17 08:49:39,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:39,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:39,884 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:39,885 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:39,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:39,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:39,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:39,901 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:39,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-11-17 08:49:39,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:39,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:39,919 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:39,919 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:39,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:39,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:39,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:39,932 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:39,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-11-17 08:49:39,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:39,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:39,947 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:39,947 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=3} Honda state: {fibo1_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:39,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:39,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:39,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:39,959 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:39,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-11-17 08:49:39,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:39,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:39,972 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:39,972 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:39,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:39,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:39,984 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:39,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-11-17 08:49:39,985 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:39,985 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:39,996 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:39,996 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:40,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-11-17 08:49:40,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,008 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-11-17 08:49:40,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:40,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:40,022 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:40,022 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:40,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:40,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,034 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-11-17 08:49:40,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:40,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:40,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2024-11-17 08:49:40,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,058 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-11-17 08:49:40,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:49:40,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:40,072 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:49:40,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2024-11-17 08:49:40,083 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:40,083 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:40,083 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:40,083 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:40,083 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:49:40,083 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,083 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:40,083 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:40,083 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration4_Loop [2024-11-17 08:49:40,083 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:40,083 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:40,084 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:40,088 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:40,090 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:40,092 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:40,094 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:40,096 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:40,101 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:40,104 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:40,106 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:40,147 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:40,148 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:49:40,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,151 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,153 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:40,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-11-17 08:49:40,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:40,166 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:40,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:40,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:40,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:40,167 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:40,167 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:40,169 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:40,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:40,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,186 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-11-17 08:49:40,188 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:40,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:40,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:40,201 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:40,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:40,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:40,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:40,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:40,203 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:40,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2024-11-17 08:49:40,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,216 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-11-17 08:49:40,218 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:40,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:40,228 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:40,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:40,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:40,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:40,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:40,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:40,230 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:40,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:40,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,242 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-11-17 08:49:40,244 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:40,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:40,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:40,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:40,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:40,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:40,258 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:40,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:40,260 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:40,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:40,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,279 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-11-17 08:49:40,281 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:40,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:40,294 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:40,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:40,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:40,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:40,295 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:40,295 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:40,297 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:40,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2024-11-17 08:49:40,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,314 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2024-11-17 08:49:40,316 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:40,326 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:40,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:40,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:40,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:40,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:40,327 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:40,327 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:40,329 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:49:40,331 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:49:40,331 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:49:40,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:40,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:40,333 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:40,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2024-11-17 08:49:40,334 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:49:40,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:49:40,334 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:49:40,334 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2024-11-17 08:49:40,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2024-11-17 08:49:40,345 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:49:40,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:40,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-17 08:49:40,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:40,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2024-11-17 08:49:41,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:41,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 08:49:41,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 08:49:41,232 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2024-11-17 08:49:41,232 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 172 states and 233 transitions. cyclomatic complexity: 66 Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-17 08:49:41,660 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 172 states and 233 transitions. cyclomatic complexity: 66. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) Result 1076 states and 1486 transitions. Complement of second has 50 states. [2024-11-17 08:49:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-17 08:49:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 73 transitions. [2024-11-17 08:49:41,662 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 73 transitions. Stem has 69 letters. Loop has 26 letters. [2024-11-17 08:49:41,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:41,663 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:49:41,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:41,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-17 08:49:41,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:42,256 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 08:49:42,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 08:49:42,439 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2024-11-17 08:49:42,440 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 172 states and 233 transitions. cyclomatic complexity: 66 Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-17 08:49:42,795 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 172 states and 233 transitions. cyclomatic complexity: 66. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) Result 875 states and 1289 transitions. Complement of second has 41 states. [2024-11-17 08:49:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-17 08:49:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 50 transitions. [2024-11-17 08:49:42,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 50 transitions. Stem has 69 letters. Loop has 26 letters. [2024-11-17 08:49:42,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:42,798 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:49:42,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:42,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-17 08:49:42,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:43,316 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-17 08:49:43,318 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:43,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 08:49:43,508 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 10 loop predicates [2024-11-17 08:49:43,508 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 172 states and 233 transitions. cyclomatic complexity: 66 Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-17 08:49:43,898 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 172 states and 233 transitions. cyclomatic complexity: 66. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) Result 1844 states and 2547 transitions. Complement of second has 126 states. [2024-11-17 08:49:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 9 states have internal predecessors, (40), 7 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (8), 3 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-17 08:49:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 77 transitions. [2024-11-17 08:49:43,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 77 transitions. Stem has 69 letters. Loop has 26 letters. [2024-11-17 08:49:43,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:43,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 77 transitions. Stem has 95 letters. Loop has 26 letters. [2024-11-17 08:49:43,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:43,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 77 transitions. Stem has 69 letters. Loop has 52 letters. [2024-11-17 08:49:43,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:43,913 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1844 states and 2547 transitions. [2024-11-17 08:49:43,934 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 114 [2024-11-17 08:49:43,960 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1844 states to 1407 states and 2059 transitions. [2024-11-17 08:49:43,960 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 405 [2024-11-17 08:49:43,962 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 443 [2024-11-17 08:49:43,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1407 states and 2059 transitions. [2024-11-17 08:49:43,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:43,966 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1407 states and 2059 transitions. [2024-11-17 08:49:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states and 2059 transitions. [2024-11-17 08:49:44,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1257. [2024-11-17 08:49:44,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 803 states have (on average 1.2764632627646326) internal successors, (1025), 868 states have internal predecessors, (1025), 260 states have call successors, (283), 166 states have call predecessors, (283), 194 states have return successors, (466), 222 states have call predecessors, (466), 257 states have call successors, (466) [2024-11-17 08:49:44,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1774 transitions. [2024-11-17 08:49:44,050 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1257 states and 1774 transitions. [2024-11-17 08:49:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:49:44,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-17 08:49:44,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2024-11-17 08:49:44,052 INFO L87 Difference]: Start difference. First operand 1257 states and 1774 transitions. Second operand has 28 states, 25 states have (on average 2.64) internal successors, (66), 22 states have internal predecessors, (66), 17 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (20), 7 states have call predecessors, (20), 11 states have call successors, (20) [2024-11-17 08:49:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:49:44,457 INFO L93 Difference]: Finished difference Result 1518 states and 2021 transitions. [2024-11-17 08:49:44,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1518 states and 2021 transitions. [2024-11-17 08:49:44,471 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 104 [2024-11-17 08:49:44,479 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1518 states to 832 states and 1058 transitions. [2024-11-17 08:49:44,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 435 [2024-11-17 08:49:44,480 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 435 [2024-11-17 08:49:44,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 832 states and 1058 transitions. [2024-11-17 08:49:44,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:44,480 INFO L218 hiAutomatonCegarLoop]: Abstraction has 832 states and 1058 transitions. [2024-11-17 08:49:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states and 1058 transitions. [2024-11-17 08:49:44,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 784. [2024-11-17 08:49:44,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 502 states have (on average 1.1713147410358566) internal successors, (588), 556 states have internal predecessors, (588), 142 states have call successors, (154), 97 states have call predecessors, (154), 140 states have return successors, (264), 130 states have call predecessors, (264), 130 states have call successors, (264) [2024-11-17 08:49:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1006 transitions. [2024-11-17 08:49:44,501 INFO L240 hiAutomatonCegarLoop]: Abstraction has 784 states and 1006 transitions. [2024-11-17 08:49:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 08:49:44,502 INFO L425 stractBuchiCegarLoop]: Abstraction has 784 states and 1006 transitions. [2024-11-17 08:49:44,503 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-17 08:49:44,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 784 states and 1006 transitions. [2024-11-17 08:49:44,509 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 102 [2024-11-17 08:49:44,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:44,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:44,512 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:44,513 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2024-11-17 08:49:44,513 INFO L745 eck$LassoCheckResult]: Stem: 9763#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 9764#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 9814#L39-1 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 9815#fibo1ENTRY ~n := #in~n; 10039#L10 assume !(~n < 1); 10034#L12 assume !(1 == ~n); 10016#L15-3 call #t~ret4 := fibo2(~n - 1);< 10021#fibo2ENTRY ~n := #in~n; 10022#L20 assume !(~n < 1); 10018#L22 assume !(1 == ~n); 10015#L25-3 call #t~ret6 := fibo1(~n - 1);< 10017#fibo1ENTRY ~n := #in~n; 10040#L10 assume !(~n < 1); 10035#L12 assume !(1 == ~n); 9906#L15-3 call #t~ret4 := fibo2(~n - 1);< 10027#fibo2ENTRY ~n := #in~n; 10036#L20 assume !(~n < 1); 10031#L22 assume !(1 == ~n); 10014#L25-3 call #t~ret6 := fibo1(~n - 1);< 10017#fibo1ENTRY ~n := #in~n; 10044#L10 assume !(~n < 1); 10050#L12 assume 1 == ~n;#res := 1; 10049#fibo1FINAL assume true; 10048#fibo1EXIT >#37#return; 9897#L25-2 call #t~ret7 := fibo1(~n - 2);< 10199#fibo1ENTRY ~n := #in~n; 10210#L10 assume ~n < 1;#res := 0; 10209#fibo1FINAL assume true; 10198#fibo1EXIT >#35#return; 10196#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 10195#fibo2FINAL assume true; 10180#fibo2EXIT >#41#return; 10167#L15-2 [2024-11-17 08:49:44,513 INFO L747 eck$LassoCheckResult]: Loop: 10167#L15-2 call #t~ret5 := fibo2(~n - 2);< 10170#fibo2ENTRY ~n := #in~n; 10168#L20 assume !(~n < 1); 10166#L22 assume !(1 == ~n); 9808#L25-3 call #t~ret6 := fibo1(~n - 1);< 10111#fibo1ENTRY ~n := #in~n; 10107#L10 assume !(~n < 1); 10102#L12 assume !(1 == ~n); 10095#L15-3 call #t~ret4 := fibo2(~n - 1);< 10099#fibo2ENTRY ~n := #in~n; 10129#L20 assume !(~n < 1); 10127#L22 assume 1 == ~n;#res := 1; 10128#fibo2FINAL assume true; 10172#fibo2EXIT >#41#return; 10096#L15-2 call #t~ret5 := fibo2(~n - 2);< 10170#fibo2ENTRY ~n := #in~n; 10168#L20 assume !(~n < 1); 10166#L22 assume !(1 == ~n); 9808#L25-3 call #t~ret6 := fibo1(~n - 1);< 10111#fibo1ENTRY ~n := #in~n; 10107#L10 assume !(~n < 1); 10102#L12 assume 1 == ~n;#res := 1; 10103#fibo1FINAL assume true; 10218#fibo1EXIT >#37#return; 10181#L25-2 call #t~ret7 := fibo1(~n - 2);< 10201#fibo1ENTRY ~n := #in~n; 10219#L10 assume !(~n < 1); 10202#L12 assume 1 == ~n;#res := 1; 10103#fibo1FINAL assume true; 10218#fibo1EXIT >#35#return; 10197#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 10193#fibo2FINAL assume true; 10176#fibo2EXIT >#39#return; 10178#L15-1 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 10467#fibo1FINAL assume true; 10468#fibo1EXIT >#37#return; 9811#L25-2 call #t~ret7 := fibo1(~n - 2);< 10201#fibo1ENTRY ~n := #in~n; 10219#L10 assume !(~n < 1); 10202#L12 assume !(1 == ~n); 10177#L15-3 call #t~ret4 := fibo2(~n - 1);< 10184#fibo2ENTRY ~n := #in~n; 10189#L20 assume !(~n < 1); 10187#L22 assume !(1 == ~n); 10182#L25-3 call #t~ret6 := fibo1(~n - 1);< 10201#fibo1ENTRY ~n := #in~n; 10219#L10 assume !(~n < 1); 10202#L12 assume !(1 == ~n); 10177#L15-3 call #t~ret4 := fibo2(~n - 1);< 10184#fibo2ENTRY ~n := #in~n; 10189#L20 assume !(~n < 1); 10187#L22 assume 1 == ~n;#res := 1; 9890#fibo2FINAL assume true; 10179#fibo2EXIT >#41#return; 10167#L15-2 call #t~ret5 := fibo2(~n - 2);< 10194#fibo2ENTRY ~n := #in~n; 10363#L20 assume ~n < 1;#res := 0; 10360#fibo2FINAL assume true; 10232#fibo2EXIT >#39#return; 10226#L15-1 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 10221#fibo1FINAL assume true; 10216#fibo1EXIT >#37#return; 10181#L25-2 call #t~ret7 := fibo1(~n - 2);< 10201#fibo1ENTRY ~n := #in~n; 10219#L10 assume !(~n < 1); 10202#L12 assume 1 == ~n;#res := 1; 10103#fibo1FINAL assume true; 10218#fibo1EXIT >#35#return; 10197#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 10193#fibo2FINAL assume true; 10176#fibo2EXIT >#41#return; 10167#L15-2 [2024-11-17 08:49:44,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:44,514 INFO L85 PathProgramCache]: Analyzing trace with hash -504148149, now seen corresponding path program 1 times [2024-11-17 08:49:44,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:44,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263351327] [2024-11-17 08:49:44,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:44,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:44,520 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:44,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:44,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:44,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1629790751, now seen corresponding path program 1 times [2024-11-17 08:49:44,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077592906] [2024-11-17 08:49:44,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:44,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-17 08:49:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-11-17 08:49:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 08:49:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,767 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 40 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-17 08:49:44,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:49:44,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077592906] [2024-11-17 08:49:44,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077592906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:49:44,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564495214] [2024-11-17 08:49:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:44,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:49:44,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:44,770 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:49:44,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-17 08:49:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:44,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 08:49:44,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:44,890 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-17 08:49:44,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:49:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-17 08:49:45,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564495214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:49:45,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:49:45,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2024-11-17 08:49:45,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339880859] [2024-11-17 08:49:45,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:49:45,063 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:49:45,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:49:45,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-17 08:49:45,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-17 08:49:45,064 INFO L87 Difference]: Start difference. First operand 784 states and 1006 transitions. cyclomatic complexity: 236 Second operand has 17 states, 14 states have (on average 3.642857142857143) internal successors, (51), 13 states have internal predecessors, (51), 7 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2024-11-17 08:49:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:49:45,294 INFO L93 Difference]: Finished difference Result 315 states and 399 transitions. [2024-11-17 08:49:45,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 399 transitions. [2024-11-17 08:49:45,297 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2024-11-17 08:49:45,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 280 states and 355 transitions. [2024-11-17 08:49:45,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 197 [2024-11-17 08:49:45,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 204 [2024-11-17 08:49:45,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 280 states and 355 transitions. [2024-11-17 08:49:45,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:45,302 INFO L218 hiAutomatonCegarLoop]: Abstraction has 280 states and 355 transitions. [2024-11-17 08:49:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states and 355 transitions. [2024-11-17 08:49:45,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 260. [2024-11-17 08:49:45,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 167 states have (on average 1.1437125748502994) internal successors, (191), 175 states have internal predecessors, (191), 49 states have call successors, (51), 34 states have call predecessors, (51), 44 states have return successors, (85), 50 states have call predecessors, (85), 44 states have call successors, (85) [2024-11-17 08:49:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 327 transitions. [2024-11-17 08:49:45,308 INFO L240 hiAutomatonCegarLoop]: Abstraction has 260 states and 327 transitions. [2024-11-17 08:49:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-17 08:49:45,309 INFO L425 stractBuchiCegarLoop]: Abstraction has 260 states and 327 transitions. [2024-11-17 08:49:45,309 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-17 08:49:45,309 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 260 states and 327 transitions. [2024-11-17 08:49:45,311 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2024-11-17 08:49:45,311 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:45,311 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:45,313 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:45,313 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-17 08:49:45,313 INFO L745 eck$LassoCheckResult]: Stem: 11441#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 11442#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 11472#L39-1 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 11486#fibo1ENTRY ~n := #in~n; 11502#L10 assume !(~n < 1); 11503#L12 assume !(1 == ~n); 11471#L15-3 call #t~ret4 := fibo2(~n - 1);< 11473#fibo2ENTRY ~n := #in~n; 11542#L20 assume !(~n < 1); 11572#L22 assume !(1 == ~n); 11482#L25-3 call #t~ret6 := fibo1(~n - 1);< 11481#fibo1ENTRY ~n := #in~n; 11484#L10 assume !(~n < 1); 11497#L12 assume !(1 == ~n); 11498#L15-3 call #t~ret4 := fibo2(~n - 1);< 11548#fibo2ENTRY ~n := #in~n; 11541#L20 assume !(~n < 1); 11540#L22 assume !(1 == ~n); 11483#L25-3 call #t~ret6 := fibo1(~n - 1);< 11481#fibo1ENTRY ~n := #in~n; 11485#L10 assume !(~n < 1); 11642#L12 assume 1 == ~n;#res := 1; 11641#fibo1FINAL assume true; 11599#fibo1EXIT >#37#return; 11584#L25-2 call #t~ret7 := fibo1(~n - 2);< 11585#fibo1ENTRY ~n := #in~n; 11588#L10 assume ~n < 1;#res := 0; 11586#fibo1FINAL assume true; 11583#fibo1EXIT >#35#return; 11582#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 11570#fibo2FINAL assume true; 11556#fibo2EXIT >#41#return; 11448#L15-2 [2024-11-17 08:49:45,313 INFO L747 eck$LassoCheckResult]: Loop: 11448#L15-2 call #t~ret5 := fibo2(~n - 2);< 11515#fibo2ENTRY ~n := #in~n; 11579#L20 assume !(~n < 1); 11446#L22 assume !(1 == ~n); 11449#L25-3 call #t~ret6 := fibo1(~n - 1);< 11531#fibo1ENTRY ~n := #in~n; 11530#L10 assume !(~n < 1); 11526#L12 assume !(1 == ~n); 11487#L15-3 call #t~ret4 := fibo2(~n - 1);< 11591#fibo2ENTRY ~n := #in~n; 11605#L20 assume !(~n < 1); 11602#L22 assume !(1 == ~n); 11451#L25-3 call #t~ret6 := fibo1(~n - 1);< 11634#fibo1ENTRY ~n := #in~n; 11501#L10 assume !(~n < 1); 11495#L12 assume 1 == ~n;#res := 1; 11496#fibo1FINAL assume true; 11692#fibo1EXIT >#37#return; 11597#L25-2 call #t~ret7 := fibo1(~n - 2);< 11679#fibo1ENTRY ~n := #in~n; 11678#L10 assume ~n < 1;#res := 0; 11601#fibo1FINAL assume true; 11595#fibo1EXIT >#35#return; 11593#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 11592#fibo2FINAL assume true; 11590#fibo2EXIT >#41#return; 11575#L15-2 call #t~ret5 := fibo2(~n - 2);< 11578#fibo2ENTRY ~n := #in~n; 11627#L20 assume ~n < 1;#res := 0; 11580#fibo2FINAL assume true; 11574#fibo2EXIT >#39#return; 11573#L15-1 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11571#fibo1FINAL assume true; 11569#fibo1EXIT >#37#return; 11552#L25-2 call #t~ret7 := fibo1(~n - 2);< 11562#fibo1ENTRY ~n := #in~n; 11559#L10 assume !(~n < 1); 11557#L12 assume !(1 == ~n); 11545#L15-3 call #t~ret4 := fibo2(~n - 1);< 11553#fibo2ENTRY ~n := #in~n; 11624#L20 assume !(~n < 1); 11622#L22 assume !(1 == ~n); 11550#L25-3 call #t~ret6 := fibo1(~n - 1);< 11562#fibo1ENTRY ~n := #in~n; 11559#L10 assume !(~n < 1); 11557#L12 assume 1 == ~n;#res := 1; 11527#fibo1FINAL assume true; 11628#fibo1EXIT >#37#return; 11564#L25-2 call #t~ret7 := fibo1(~n - 2);< 11567#fibo1ENTRY ~n := #in~n; 11632#L10 assume !(~n < 1); 11633#L12 assume 1 == ~n;#res := 1; 11527#fibo1FINAL assume true; 11628#fibo1EXIT >#35#return; 11565#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 11554#fibo2FINAL assume true; 11544#fibo2EXIT >#41#return; 11448#L15-2 [2024-11-17 08:49:45,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash -504148149, now seen corresponding path program 2 times [2024-11-17 08:49:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:45,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755596764] [2024-11-17 08:49:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:45,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:45,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:45,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:45,326 INFO L85 PathProgramCache]: Analyzing trace with hash 901299337, now seen corresponding path program 1 times [2024-11-17 08:49:45,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:45,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644761285] [2024-11-17 08:49:45,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:45,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-17 08:49:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 08:49:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-17 08:49:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,454 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-17 08:49:45,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:49:45,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644761285] [2024-11-17 08:49:45,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644761285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:49:45,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602549587] [2024-11-17 08:49:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:45,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:49:45,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:45,457 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:49:45,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-17 08:49:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 08:49:45,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 61 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-17 08:49:45,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:49:45,800 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 35 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-17 08:49:45,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602549587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:49:45,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:49:45,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2024-11-17 08:49:45,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757612915] [2024-11-17 08:49:45,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:49:45,801 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:49:45,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:49:45,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 08:49:45,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-17 08:49:45,802 INFO L87 Difference]: Start difference. First operand 260 states and 327 transitions. cyclomatic complexity: 71 Second operand has 15 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 14 states have internal predecessors, (45), 7 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-17 08:49:45,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:49:45,921 INFO L93 Difference]: Finished difference Result 261 states and 316 transitions. [2024-11-17 08:49:45,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 261 states and 316 transitions. [2024-11-17 08:49:45,924 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 48 [2024-11-17 08:49:45,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 261 states to 253 states and 303 transitions. [2024-11-17 08:49:45,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2024-11-17 08:49:45,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 191 [2024-11-17 08:49:45,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 253 states and 303 transitions. [2024-11-17 08:49:45,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:45,927 INFO L218 hiAutomatonCegarLoop]: Abstraction has 253 states and 303 transitions. [2024-11-17 08:49:45,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states and 303 transitions. [2024-11-17 08:49:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 243. [2024-11-17 08:49:45,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 160 states have (on average 1.14375) internal successors, (183), 167 states have internal predecessors, (183), 43 states have call successors, (45), 35 states have call predecessors, (45), 40 states have return successors, (63), 40 states have call predecessors, (63), 38 states have call successors, (63) [2024-11-17 08:49:45,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 291 transitions. [2024-11-17 08:49:45,932 INFO L240 hiAutomatonCegarLoop]: Abstraction has 243 states and 291 transitions. [2024-11-17 08:49:45,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 08:49:45,933 INFO L425 stractBuchiCegarLoop]: Abstraction has 243 states and 291 transitions. [2024-11-17 08:49:45,933 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-17 08:49:45,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 243 states and 291 transitions. [2024-11-17 08:49:45,934 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 48 [2024-11-17 08:49:45,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:45,934 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:45,935 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:45,935 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 7, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2024-11-17 08:49:45,935 INFO L745 eck$LassoCheckResult]: Stem: 12409#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 12410#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 12439#L39-1 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 12446#fibo1ENTRY ~n := #in~n; 12502#L10 assume !(~n < 1); 12503#L12 assume !(1 == ~n); 12438#L15-3 call #t~ret4 := fibo2(~n - 1);< 12440#fibo2ENTRY ~n := #in~n; 12508#L20 assume !(~n < 1); 12532#L22 assume !(1 == ~n); 12474#L25-3 call #t~ret6 := fibo1(~n - 1);< 12475#fibo1ENTRY ~n := #in~n; 12504#L10 assume !(~n < 1); 12501#L12 assume !(1 == ~n); 12415#L15-3 call #t~ret4 := fibo2(~n - 1);< 12522#fibo2ENTRY ~n := #in~n; 12464#L20 assume !(~n < 1); 12414#L22 assume !(1 == ~n); 12416#L25-3 call #t~ret6 := fibo1(~n - 1);< 12475#fibo1ENTRY ~n := #in~n; 12505#L10 assume !(~n < 1); 12601#L12 assume 1 == ~n;#res := 1; 12597#fibo1FINAL assume true; 12531#fibo1EXIT >#37#return; 12529#L25-2 call #t~ret7 := fibo1(~n - 2);< 12530#fibo1ENTRY ~n := #in~n; 12599#L10 assume ~n < 1;#res := 0; 12596#fibo1FINAL assume true; 12528#fibo1EXIT >#35#return; 12527#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 12526#fibo2FINAL assume true; 12521#fibo2EXIT >#41#return; 12471#L15-2 [2024-11-17 08:49:45,936 INFO L747 eck$LassoCheckResult]: Loop: 12471#L15-2 call #t~ret5 := fibo2(~n - 2);< 12470#fibo2ENTRY ~n := #in~n; 12473#L20 assume !(~n < 1); 12500#L22 assume !(1 == ~n); 12477#L25-3 call #t~ret6 := fibo1(~n - 1);< 12497#fibo1ENTRY ~n := #in~n; 12495#L10 assume !(~n < 1); 12488#L12 assume !(1 == ~n); 12433#L15-3 call #t~ret4 := fibo2(~n - 1);< 12486#fibo2ENTRY ~n := #in~n; 12493#L20 assume !(~n < 1); 12491#L22 assume !(1 == ~n); 12450#L25-3 call #t~ret6 := fibo1(~n - 1);< 12482#fibo1ENTRY ~n := #in~n; 12494#L10 assume !(~n < 1); 12492#L12 assume 1 == ~n;#res := 1; 12451#fibo1FINAL assume true; 12481#fibo1EXIT >#37#return; 12424#L25-2 call #t~ret7 := fibo1(~n - 2);< 12444#fibo1ENTRY ~n := #in~n; 12445#L10 assume ~n < 1;#res := 0; 12423#fibo1FINAL assume true; 12425#fibo1EXIT >#35#return; 12432#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 12434#fibo2FINAL assume true; 12485#fibo2EXIT >#41#return; 12472#L15-2 call #t~ret5 := fibo2(~n - 2);< 12470#fibo2ENTRY ~n := #in~n; 12473#L20 assume !(~n < 1); 12500#L22 assume !(1 == ~n); 12477#L25-3 call #t~ret6 := fibo1(~n - 1);< 12497#fibo1ENTRY ~n := #in~n; 12495#L10 assume !(~n < 1); 12488#L12 assume 1 == ~n;#res := 1; 12489#fibo1FINAL assume true; 12537#fibo1EXIT >#37#return; 12534#L25-2 call #t~ret7 := fibo1(~n - 2);< 12535#fibo1ENTRY ~n := #in~n; 12554#L10 assume !(~n < 1); 12555#L12 assume 1 == ~n;#res := 1; 12489#fibo1FINAL assume true; 12537#fibo1EXIT >#35#return; 12524#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 12518#fibo2FINAL assume true; 12510#fibo2EXIT >#39#return; 12512#L15-1 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12561#fibo1FINAL assume true; 12556#fibo1EXIT >#37#return; 12516#L25-2 call #t~ret7 := fibo1(~n - 2);< 12543#fibo1ENTRY ~n := #in~n; 12553#L10 assume !(~n < 1); 12520#L12 assume !(1 == ~n); 12511#L15-3 call #t~ret4 := fibo2(~n - 1);< 12517#fibo2ENTRY ~n := #in~n; 12544#L20 assume !(~n < 1); 12541#L22 assume !(1 == ~n); 12514#L25-3 call #t~ret6 := fibo1(~n - 1);< 12540#fibo1ENTRY ~n := #in~n; 12523#L10 assume !(~n < 1); 12520#L12 assume 1 == ~n;#res := 1; 12489#fibo1FINAL assume true; 12537#fibo1EXIT >#37#return; 12534#L25-2 call #t~ret7 := fibo1(~n - 2);< 12535#fibo1ENTRY ~n := #in~n; 12554#L10 assume !(~n < 1); 12555#L12 assume 1 == ~n;#res := 1; 12489#fibo1FINAL assume true; 12537#fibo1EXIT >#35#return; 12524#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 12518#fibo2FINAL assume true; 12510#fibo2EXIT >#41#return; 12471#L15-2 [2024-11-17 08:49:45,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:45,936 INFO L85 PathProgramCache]: Analyzing trace with hash -504148149, now seen corresponding path program 3 times [2024-11-17 08:49:45,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:45,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100305634] [2024-11-17 08:49:45,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:45,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:45,942 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:45,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:45,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash 298211609, now seen corresponding path program 1 times [2024-11-17 08:49:45,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:45,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270403552] [2024-11-17 08:49:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:45,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:45,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-17 08:49:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 08:49:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-17 08:49:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,153 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 36 proven. 48 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-17 08:49:46,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:49:46,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270403552] [2024-11-17 08:49:46,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270403552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:49:46,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803716769] [2024-11-17 08:49:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:46,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:49:46,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:46,157 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:49:46,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-17 08:49:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:46,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 08:49:46,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 103 proven. 22 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-17 08:49:46,295 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:49:46,639 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 39 proven. 63 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-17 08:49:46,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803716769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:49:46,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:49:46,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2024-11-17 08:49:46,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996655441] [2024-11-17 08:49:46,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:49:46,640 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-17 08:49:46,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:49:46,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 08:49:46,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-17 08:49:46,641 INFO L87 Difference]: Start difference. First operand 243 states and 291 transitions. cyclomatic complexity: 51 Second operand has 20 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 18 states have internal predecessors, (59), 12 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (19), 7 states have call predecessors, (19), 12 states have call successors, (19) [2024-11-17 08:49:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:49:46,881 INFO L93 Difference]: Finished difference Result 333 states and 414 transitions. [2024-11-17 08:49:46,881 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 333 states and 414 transitions. [2024-11-17 08:49:46,884 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 48 [2024-11-17 08:49:46,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 333 states to 305 states and 375 transitions. [2024-11-17 08:49:46,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 245 [2024-11-17 08:49:46,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 245 [2024-11-17 08:49:46,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 305 states and 375 transitions. [2024-11-17 08:49:46,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:46,887 INFO L218 hiAutomatonCegarLoop]: Abstraction has 305 states and 375 transitions. [2024-11-17 08:49:46,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states and 375 transitions. [2024-11-17 08:49:46,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 271. [2024-11-17 08:49:46,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 175 states have (on average 1.1257142857142857) internal successors, (197), 182 states have internal predecessors, (197), 50 states have call successors, (52), 38 states have call predecessors, (52), 46 states have return successors, (81), 50 states have call predecessors, (81), 45 states have call successors, (81) [2024-11-17 08:49:46,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 330 transitions. [2024-11-17 08:49:46,894 INFO L240 hiAutomatonCegarLoop]: Abstraction has 271 states and 330 transitions. [2024-11-17 08:49:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 08:49:46,895 INFO L425 stractBuchiCegarLoop]: Abstraction has 271 states and 330 transitions. [2024-11-17 08:49:46,895 INFO L332 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-17 08:49:46,895 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 271 states and 330 transitions. [2024-11-17 08:49:46,897 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 48 [2024-11-17 08:49:46,897 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:46,897 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:46,898 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:46,898 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:46,898 INFO L745 eck$LassoCheckResult]: Stem: 13569#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 13570#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 13582#L39-1 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 13608#fibo1ENTRY ~n := #in~n; 13628#L10 assume !(~n < 1); 13629#L12 assume !(1 == ~n); 13581#L15-3 call #t~ret4 := fibo2(~n - 1);< 13583#fibo2ENTRY ~n := #in~n; 13695#L20 assume !(~n < 1); 13693#L22 assume !(1 == ~n); 13605#L25-3 call #t~ret6 := fibo1(~n - 1);< 13604#fibo1ENTRY ~n := #in~n; 13606#L10 assume !(~n < 1); 13667#L12 assume !(1 == ~n); 13576#L15-3 call #t~ret4 := fibo2(~n - 1);< 13670#fibo2ENTRY ~n := #in~n; 13632#L20 assume !(~n < 1); 13575#L22 assume !(1 == ~n); 13577#L25-3 call #t~ret6 := fibo1(~n - 1);< 13604#fibo1ENTRY ~n := #in~n; 13606#L10 assume !(~n < 1); 13667#L12 assume !(1 == ~n); 13576#L15-3 call #t~ret4 := fibo2(~n - 1);< 13670#fibo2ENTRY ~n := #in~n; 13632#L20 assume !(~n < 1); 13575#L22 assume !(1 == ~n); 13577#L25-3 call #t~ret6 := fibo1(~n - 1);< 13604#fibo1ENTRY ~n := #in~n; 13607#L10 assume !(~n < 1); 13740#L12 assume 1 == ~n;#res := 1; 13741#fibo1FINAL assume true; 13750#fibo1EXIT >#37#return; 13747#L25-2 call #t~ret7 := fibo1(~n - 2);< 13749#fibo1ENTRY ~n := #in~n; 13765#L10 assume ~n < 1;#res := 0; 13746#fibo1FINAL assume true; 13748#fibo1EXIT >#35#return; 13780#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 13779#fibo2FINAL assume true; 13777#fibo2EXIT >#41#return; 13716#L15-2 call #t~ret5 := fibo2(~n - 2);< 13680#fibo2ENTRY ~n := #in~n; 13782#L20 assume !(~n < 1); 13778#L22 assume 1 == ~n;#res := 1; 13776#fibo2FINAL assume true; 13775#fibo2EXIT >#39#return; 13770#L15-1 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13764#fibo1FINAL assume true; 13712#fibo1EXIT >#37#return; 13675#L25-2 [2024-11-17 08:49:46,899 INFO L747 eck$LassoCheckResult]: Loop: 13675#L25-2 call #t~ret7 := fibo1(~n - 2);< 13708#fibo1ENTRY ~n := #in~n; 13745#L10 assume !(~n < 1); 13681#L12 assume !(1 == ~n); 13672#L15-3 call #t~ret4 := fibo2(~n - 1);< 13678#fibo2ENTRY ~n := #in~n; 13714#L20 assume !(~n < 1); 13709#L22 assume !(1 == ~n); 13676#L25-3 call #t~ret6 := fibo1(~n - 1);< 13706#fibo1ENTRY ~n := #in~n; 13683#L10 assume !(~n < 1); 13681#L12 assume !(1 == ~n); 13672#L15-3 call #t~ret4 := fibo2(~n - 1);< 13678#fibo2ENTRY ~n := #in~n; 13714#L20 assume !(~n < 1); 13709#L22 assume !(1 == ~n); 13676#L25-3 call #t~ret6 := fibo1(~n - 1);< 13706#fibo1ENTRY ~n := #in~n; 13683#L10 assume !(~n < 1); 13681#L12 assume 1 == ~n;#res := 1; 13656#fibo1FINAL assume true; 13699#fibo1EXIT >#37#return; 13701#L25-2 call #t~ret7 := fibo1(~n - 2);< 13758#fibo1ENTRY ~n := #in~n; 13760#L10 assume ~n < 1;#res := 0; 13759#fibo1FINAL assume true; 13757#fibo1EXIT >#35#return; 13756#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 13755#fibo2FINAL assume true; 13754#fibo2EXIT >#41#return; 13716#L15-2 call #t~ret5 := fibo2(~n - 2);< 13680#fibo2ENTRY ~n := #in~n; 13782#L20 assume !(~n < 1); 13778#L22 assume 1 == ~n;#res := 1; 13776#fibo2FINAL assume true; 13775#fibo2EXIT >#39#return; 13770#L15-1 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13764#fibo1FINAL assume true; 13712#fibo1EXIT >#37#return; 13675#L25-2 [2024-11-17 08:49:46,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:46,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1173716362, now seen corresponding path program 1 times [2024-11-17 08:49:46,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:46,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826294336] [2024-11-17 08:49:46,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:46,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:47,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-17 08:49:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:47,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:47,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:47,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:47,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 08:49:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 08:49:47,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:49:47,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826294336] [2024-11-17 08:49:47,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826294336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:49:47,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928574633] [2024-11-17 08:49:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:47,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:49:47,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:47,096 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:49:47,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-17 08:49:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:47,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 08:49:47,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:47,226 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 08:49:47,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:49:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 08:49:47,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928574633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:49:47,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:49:47,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2024-11-17 08:49:47,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478188077] [2024-11-17 08:49:47,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:49:47,420 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-17 08:49:47,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:47,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1384424635, now seen corresponding path program 1 times [2024-11-17 08:49:47,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:47,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602475913] [2024-11-17 08:49:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:47,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:47,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:47,430 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:47,728 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:47,728 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:47,728 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:47,728 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:47,728 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:49:47,728 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:47,728 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:47,728 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:47,728 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2024-11-17 08:49:47,728 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:47,728 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:47,729 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:47,735 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:47,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:47,739 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:47,741 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:47,744 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:47,746 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:47,751 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:47,753 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:47,797 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:47,797 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:49:47,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:47,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:47,800 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:47,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2024-11-17 08:49:47,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:47,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:47,816 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:47,816 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:47,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2024-11-17 08:49:47,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:47,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:47,833 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:47,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2024-11-17 08:49:47,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:47,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:47,849 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:47,850 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=4} Honda state: {fibo2_#in~n=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:47,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2024-11-17 08:49:47,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:47,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:47,862 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:47,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2024-11-17 08:49:47,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:47,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:47,875 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:47,875 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:47,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2024-11-17 08:49:47,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:47,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:47,886 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:47,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2024-11-17 08:49:47,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:47,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:47,898 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:47,898 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:47,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2024-11-17 08:49:47,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:47,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:47,910 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:47,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2024-11-17 08:49:47,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:47,911 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:47,922 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:47,922 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=2} Honda state: {fibo2_#t~ret6=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:47,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2024-11-17 08:49:47,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:47,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:47,934 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:47,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2024-11-17 08:49:47,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:47,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:47,947 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:47,947 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:47,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2024-11-17 08:49:47,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:47,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:47,962 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:47,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2024-11-17 08:49:47,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:47,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:47,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2024-11-17 08:49:47,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:47,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:47,993 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:47,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2024-11-17 08:49:47,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:49:47,995 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:48,007 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:49:48,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:48,018 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:48,018 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:48,018 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:48,018 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:48,018 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:49:48,018 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:48,019 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:48,019 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:48,019 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2024-11-17 08:49:48,019 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:48,019 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:48,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:48,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:48,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:48,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:48,032 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:48,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:48,038 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:48,039 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:48,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:48,080 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:48,080 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:49:48,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:48,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:48,082 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:48,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2024-11-17 08:49:48,084 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:48,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:48,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:48,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:48,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:48,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:48,094 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:48,094 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:48,096 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:48,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2024-11-17 08:49:48,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:48,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:48,107 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:48,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2024-11-17 08:49:48,109 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:48,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:48,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:48,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:48,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:48,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:48,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:48,120 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:48,121 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:48,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2024-11-17 08:49:48,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:48,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:48,134 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:48,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2024-11-17 08:49:48,136 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:48,147 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:48,147 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:48,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:48,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:48,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:48,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:48,148 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:48,149 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:48,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2024-11-17 08:49:48,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:48,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:48,161 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:48,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2024-11-17 08:49:48,162 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:48,173 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:48,173 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:48,173 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:48,173 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:48,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:48,174 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:48,174 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:48,176 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:48,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2024-11-17 08:49:48,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:48,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:48,187 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:48,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2024-11-17 08:49:48,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:48,199 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:48,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:48,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:48,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:48,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:48,200 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:48,200 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:48,202 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:49:48,204 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:49:48,204 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:49:48,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:48,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:48,206 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:48,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2024-11-17 08:49:48,207 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:49:48,208 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:49:48,208 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:49:48,208 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2024-11-17 08:49:48,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2024-11-17 08:49:48,218 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:49:48,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:48,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 08:49:48,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:48,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 08:49:48,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 08:49:48,765 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2024-11-17 08:49:48,765 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 271 states and 330 transitions. cyclomatic complexity: 62 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 08:49:48,953 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 271 states and 330 transitions. cyclomatic complexity: 62. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 286 states and 347 transitions. Complement of second has 15 states. [2024-11-17 08:49:48,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 08:49:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2024-11-17 08:49:48,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2024-11-17 08:49:48,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:48,956 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:49:48,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:49,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 08:49:49,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:49,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 08:49:49,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:49,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2024-11-17 08:49:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 08:49:49,500 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 11 loop predicates [2024-11-17 08:49:49,500 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 271 states and 330 transitions. cyclomatic complexity: 62 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 08:49:49,650 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 271 states and 330 transitions. cyclomatic complexity: 62. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 286 states and 347 transitions. Complement of second has 15 states. [2024-11-17 08:49:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 08:49:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 32 transitions. [2024-11-17 08:49:49,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2024-11-17 08:49:49,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:49,652 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:49:49,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:49,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 08:49:49,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:49,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-17 08:49:49,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-17 08:49:50,150 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 11 loop predicates [2024-11-17 08:49:50,150 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 271 states and 330 transitions. cyclomatic complexity: 62 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 08:49:50,654 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 271 states and 330 transitions. cyclomatic complexity: 62. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 1420 states and 1756 transitions. Complement of second has 159 states. [2024-11-17 08:49:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 17 states 2 stem states 14 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 08:49:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 83 transitions. [2024-11-17 08:49:50,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 83 transitions. Stem has 49 letters. Loop has 39 letters. [2024-11-17 08:49:50,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:50,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 83 transitions. Stem has 88 letters. Loop has 39 letters. [2024-11-17 08:49:50,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:50,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 83 transitions. Stem has 49 letters. Loop has 78 letters. [2024-11-17 08:49:50,662 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:50,662 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1420 states and 1756 transitions. [2024-11-17 08:49:50,677 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 131 [2024-11-17 08:49:50,683 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1420 states to 773 states and 903 transitions. [2024-11-17 08:49:50,683 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 450 [2024-11-17 08:49:50,684 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 483 [2024-11-17 08:49:50,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 773 states and 903 transitions. [2024-11-17 08:49:50,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:50,684 INFO L218 hiAutomatonCegarLoop]: Abstraction has 773 states and 903 transitions. [2024-11-17 08:49:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states and 903 transitions. [2024-11-17 08:49:50,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 733. [2024-11-17 08:49:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 467 states have (on average 1.094218415417559) internal successors, (511), 489 states have internal predecessors, (511), 140 states have call successors, (146), 100 states have call predecessors, (146), 126 states have return successors, (203), 143 states have call predecessors, (203), 129 states have call successors, (203) [2024-11-17 08:49:50,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 860 transitions. [2024-11-17 08:49:50,699 INFO L240 hiAutomatonCegarLoop]: Abstraction has 733 states and 860 transitions. [2024-11-17 08:49:50,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:49:50,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 08:49:50,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-17 08:49:50,700 INFO L87 Difference]: Start difference. First operand 733 states and 860 transitions. Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-17 08:49:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:49:50,992 INFO L93 Difference]: Finished difference Result 261 states and 270 transitions. [2024-11-17 08:49:50,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 261 states and 270 transitions. [2024-11-17 08:49:50,993 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2024-11-17 08:49:50,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 261 states to 115 states and 119 transitions. [2024-11-17 08:49:50,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2024-11-17 08:49:50,994 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 100 [2024-11-17 08:49:50,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 119 transitions. [2024-11-17 08:49:50,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-17 08:49:50,995 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115 states and 119 transitions. [2024-11-17 08:49:50,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 119 transitions. [2024-11-17 08:49:50,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2024-11-17 08:49:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.0533333333333332) internal successors, (79), 77 states have internal predecessors, (79), 21 states have call successors, (21), 18 states have call predecessors, (21), 14 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-17 08:49:50,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2024-11-17 08:49:50,998 INFO L240 hiAutomatonCegarLoop]: Abstraction has 110 states and 114 transitions. [2024-11-17 08:49:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 08:49:50,999 INFO L425 stractBuchiCegarLoop]: Abstraction has 110 states and 114 transitions. [2024-11-17 08:49:50,999 INFO L332 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2024-11-17 08:49:50,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 114 transitions. [2024-11-17 08:49:51,000 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2024-11-17 08:49:51,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-17 08:49:51,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-17 08:49:51,001 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:51,001 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 08:49:51,003 INFO L745 eck$LassoCheckResult]: Stem: 18286#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 18287#ULTIMATE.init_returnLabel#1 assume true;assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 18311#L39-1 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18312#fibo1ENTRY ~n := #in~n; 18329#L10 assume !(~n < 1); 18318#L12 assume !(1 == ~n); 18292#L15-3 call #t~ret4 := fibo2(~n - 1);< 18327#fibo2ENTRY ~n := #in~n; 18324#L20 assume !(~n < 1); 18291#L22 assume !(1 == ~n); 18293#L25-3 call #t~ret6 := fibo1(~n - 1);< 18304#fibo1ENTRY ~n := #in~n; 18305#L10 assume !(~n < 1); 18322#L12 assume !(1 == ~n); 18295#L15-3 call #t~ret4 := fibo2(~n - 1);< 18297#fibo2ENTRY ~n := #in~n; 18373#L20 assume !(~n < 1); 18372#L22 assume !(1 == ~n); 18296#L25-3 call #t~ret6 := fibo1(~n - 1);< 18304#fibo1ENTRY ~n := #in~n; 18306#L10 assume !(~n < 1); 18376#L12 assume 1 == ~n;#res := 1; 18374#fibo1FINAL assume true; 18371#fibo1EXIT >#37#return; 18333#L25-2 call #t~ret7 := fibo1(~n - 2);< 18334#fibo1ENTRY ~n := #in~n; 18382#L10 assume ~n < 1;#res := 0; 18379#fibo1FINAL assume true; 18332#fibo1EXIT >#35#return; 18300#L25-1 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 18301#fibo2FINAL assume true; 18325#fibo2EXIT >#41#return; 18326#L15-2 call #t~ret5 := fibo2(~n - 2);< 18331#fibo2ENTRY ~n := #in~n; 18383#L20 assume !(~n < 1); 18380#L22 assume 1 == ~n;#res := 1; 18335#fibo2FINAL assume true; 18330#fibo2EXIT >#39#return; 18316#L15-1 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 18298#fibo1FINAL assume true; 18299#fibo1EXIT >#37#return; 18353#L25-2 call #t~ret7 := fibo1(~n - 2);< 18315#fibo1ENTRY ~n := #in~n; 18390#L10 assume !(~n < 1); 18389#L12 assume !(1 == ~n); 18320#L15-3 call #t~ret4 := fibo2(~n - 1);< 18363#fibo2ENTRY ~n := #in~n; 18381#L20 assume !(~n < 1); 18378#L22 assume !(1 == ~n); 18290#L25-3 [2024-11-17 08:49:51,003 INFO L747 eck$LassoCheckResult]: Loop: 18290#L25-3 call #t~ret6 := fibo1(~n - 1);< 18302#fibo1ENTRY ~n := #in~n; 18303#L10 assume !(~n < 1); 18317#L12 assume !(1 == ~n); 18289#L15-3 call #t~ret4 := fibo2(~n - 1);< 18294#fibo2ENTRY ~n := #in~n; 18323#L20 assume !(~n < 1); 18288#L22 assume !(1 == ~n); 18290#L25-3 [2024-11-17 08:49:51,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:51,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1241209344, now seen corresponding path program 2 times [2024-11-17 08:49:51,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:51,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885272553] [2024-11-17 08:49:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:51,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-17 08:49:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:51,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:51,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-17 08:49:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:51,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-17 08:49:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:51,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-17 08:49:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 08:49:51,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 08:49:51,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885272553] [2024-11-17 08:49:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885272553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 08:49:51,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159277261] [2024-11-17 08:49:51,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 08:49:51,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 08:49:51,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:51,138 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 08:49:51,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-17 08:49:51,191 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 08:49:51,191 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 08:49:51,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 08:49:51,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:51,221 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 08:49:51,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 08:49:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-17 08:49:51,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159277261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 08:49:51,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 08:49:51,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 11 [2024-11-17 08:49:51,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640960820] [2024-11-17 08:49:51,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 08:49:51,316 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-17 08:49:51,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:51,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1778169755, now seen corresponding path program 2 times [2024-11-17 08:49:51,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 08:49:51,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330475178] [2024-11-17 08:49:51,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 08:49:51,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 08:49:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:51,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 08:49:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 08:49:51,322 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 08:49:51,430 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:51,430 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:51,430 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:51,430 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:51,430 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-17 08:49:51,430 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:51,430 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:51,430 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:51,430 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2024-11-17 08:49:51,430 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:51,430 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:51,431 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:51,432 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:51,434 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:51,435 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:51,441 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:51,442 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:51,444 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:51,445 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:51,485 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:51,486 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-17 08:49:51,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:51,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:51,488 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:51,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2024-11-17 08:49:51,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:51,490 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:51,501 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:51,501 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:51,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2024-11-17 08:49:51,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:51,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:51,515 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:51,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2024-11-17 08:49:51,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:51,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:51,532 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:51,532 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:51,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:51,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:51,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:51,544 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:51,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2024-11-17 08:49:51,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:51,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:51,556 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-17 08:49:51,557 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-17 08:49:51,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2024-11-17 08:49:51,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:51,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:51,569 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:51,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2024-11-17 08:49:51,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-17 08:49:51,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:51,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:51,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:51,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:51,601 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:51,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2024-11-17 08:49:51,602 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-17 08:49:51,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-17 08:49:52,587 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-17 08:49:52,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2024-11-17 08:49:52,593 INFO L204 LassoAnalysis]: Preferences: [2024-11-17 08:49:52,593 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-17 08:49:52,593 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-17 08:49:52,593 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-17 08:49:52,593 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-17 08:49:52,593 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:52,593 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-17 08:49:52,593 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-17 08:49:52,593 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2024-11-17 08:49:52,593 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-17 08:49:52,593 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-17 08:49:52,594 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:52,596 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:52,597 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:52,598 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:52,600 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:52,606 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:52,607 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:52,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-17 08:49:52,649 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-17 08:49:52,649 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-17 08:49:52,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:52,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:52,650 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:52,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2024-11-17 08:49:52,652 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:52,662 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:52,662 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:52,662 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:52,662 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:52,662 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:52,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:52,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:52,664 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:52,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2024-11-17 08:49:52,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:52,676 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:52,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2024-11-17 08:49:52,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:52,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:52,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:52,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:52,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:52,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:52,688 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:52,688 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:52,689 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:52,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2024-11-17 08:49:52,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:52,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:52,701 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:52,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2024-11-17 08:49:52,703 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:52,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:52,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:52,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:52,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:52,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:52,714 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:52,714 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:52,715 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:52,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2024-11-17 08:49:52,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:52,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:52,728 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:52,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2024-11-17 08:49:52,729 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:52,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:52,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:52,740 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:52,740 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:52,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:52,740 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:52,740 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:52,743 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-17 08:49:52,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:52,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:52,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:52,758 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:52,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2024-11-17 08:49:52,760 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-17 08:49:52,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-17 08:49:52,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-17 08:49:52,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-17 08:49:52,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-17 08:49:52,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-17 08:49:52,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-17 08:49:52,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-17 08:49:52,776 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-17 08:49:52,780 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-17 08:49:52,780 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-17 08:49:52,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-17 08:49:52,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 08:49:52,781 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-17 08:49:52,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2024-11-17 08:49:52,783 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-17 08:49:52,783 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-17 08:49:52,783 INFO L474 LassoAnalysis]: Proved termination. [2024-11-17 08:49:52,783 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2024-11-17 08:49:52,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2024-11-17 08:49:52,793 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-17 08:49:52,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:52,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 08:49:52,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:53,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 08:49:53,099 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:49:53,158 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-17 08:49:53,158 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 110 states and 114 transitions. cyclomatic complexity: 7 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 08:49:53,252 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 110 states and 114 transitions. cyclomatic complexity: 7. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 142 states and 148 transitions. Complement of second has 20 states. [2024-11-17 08:49:53,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 08:49:53,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 24 transitions. [2024-11-17 08:49:53,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 24 transitions. Stem has 49 letters. Loop has 8 letters. [2024-11-17 08:49:53,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:53,253 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:49:53,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:53,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 08:49:53,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:53,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 08:49:53,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:49:53,600 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-17 08:49:53,600 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 110 states and 114 transitions. cyclomatic complexity: 7 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 08:49:53,704 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 110 states and 114 transitions. cyclomatic complexity: 7. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 126 states and 131 transitions. Complement of second has 22 states. [2024-11-17 08:49:53,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 08:49:53,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 23 transitions. [2024-11-17 08:49:53,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 23 transitions. Stem has 49 letters. Loop has 8 letters. [2024-11-17 08:49:53,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:53,705 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-17 08:49:53,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 08:49:53,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2024-11-17 08:49:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:53,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-17 08:49:53,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 08:49:54,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-17 08:49:54,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 08:49:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 08:49:54,080 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-17 08:49:54,080 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 110 states and 114 transitions. cyclomatic complexity: 7 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 08:49:54,174 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 110 states and 114 transitions. cyclomatic complexity: 7. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 199 states and 208 transitions. Complement of second has 28 states. [2024-11-17 08:49:54,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-17 08:49:54,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 08:49:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2024-11-17 08:49:54,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 49 letters. Loop has 8 letters. [2024-11-17 08:49:54,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:54,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 57 letters. Loop has 8 letters. [2024-11-17 08:49:54,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:54,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 49 letters. Loop has 16 letters. [2024-11-17 08:49:54,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-17 08:49:54,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 199 states and 208 transitions. [2024-11-17 08:49:54,178 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-17 08:49:54,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 199 states to 0 states and 0 transitions. [2024-11-17 08:49:54,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-17 08:49:54,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-17 08:49:54,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-17 08:49:54,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-17 08:49:54,179 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 08:49:54,179 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 08:49:54,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 08:49:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 08:49:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-17 08:49:54,180 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-17 08:49:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-17 08:49:54,180 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2024-11-17 08:49:54,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2024-11-17 08:49:54,180 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-17 08:49:54,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2024-11-17 08:49:54,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-17 08:49:54,181 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-17 08:49:54,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-17 08:49:54,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-17 08:49:54,181 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 08:49:54,181 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 08:49:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 08:49:54,182 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-17 08:49:54,182 INFO L332 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2024-11-17 08:49:54,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-17 08:49:54,182 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-17 08:49:54,182 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-17 08:49:54,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.11 08:49:54 BoogieIcfgContainer [2024-11-17 08:49:54,190 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-17 08:49:54,191 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-17 08:49:54,191 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-17 08:49:54,191 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-17 08:49:54,191 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 08:49:34" (3/4) ... [2024-11-17 08:49:54,194 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-17 08:49:54,195 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-17 08:49:54,196 INFO L158 Benchmark]: Toolchain (without parser) took 20822.25ms. Allocated memory was 169.9MB in the beginning and 337.6MB in the end (delta: 167.8MB). Free memory was 112.7MB in the beginning and 237.9MB in the end (delta: -125.2MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2024-11-17 08:49:54,196 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 169.9MB. Free memory is still 130.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:49:54,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.39ms. Allocated memory is still 169.9MB. Free memory was 112.7MB in the beginning and 100.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-17 08:49:54,197 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.81ms. Allocated memory is still 169.9MB. Free memory was 100.5MB in the beginning and 99.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-17 08:49:54,197 INFO L158 Benchmark]: Boogie Preprocessor took 32.63ms. Allocated memory is still 169.9MB. Free memory was 99.2MB in the beginning and 97.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 08:49:54,197 INFO L158 Benchmark]: IcfgBuilder took 280.80ms. Allocated memory is still 169.9MB. Free memory was 97.6MB in the beginning and 86.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-17 08:49:54,197 INFO L158 Benchmark]: BuchiAutomizer took 20171.35ms. Allocated memory was 169.9MB in the beginning and 337.6MB in the end (delta: 167.8MB). Free memory was 86.7MB in the beginning and 238.9MB in the end (delta: -152.2MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2024-11-17 08:49:54,198 INFO L158 Benchmark]: Witness Printer took 4.97ms. Allocated memory is still 337.6MB. Free memory was 238.9MB in the beginning and 237.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-17 08:49:54,199 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 169.9MB. Free memory is still 130.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.39ms. Allocated memory is still 169.9MB. Free memory was 112.7MB in the beginning and 100.5MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.81ms. Allocated memory is still 169.9MB. Free memory was 100.5MB in the beginning and 99.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.63ms. Allocated memory is still 169.9MB. Free memory was 99.2MB in the beginning and 97.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 280.80ms. Allocated memory is still 169.9MB. Free memory was 97.6MB in the beginning and 86.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 20171.35ms. Allocated memory was 169.9MB in the beginning and 337.6MB in the end (delta: 167.8MB). Free memory was 86.7MB in the beginning and 238.9MB in the end (delta: -152.2MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Witness Printer took 4.97ms. Allocated memory is still 337.6MB. Free memory was 238.9MB in the beginning and 237.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 13 terminating modules (8 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 8 locations. One deterministic module has affine ranking function n and consists of 14 locations. One nondeterministic module has affine ranking function n and consists of 14 locations. One nondeterministic module has affine ranking function n and consists of 17 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 28 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 20.1s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 9.4s. Construction of modules took 2.0s. Büchi inclusion checks took 8.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 349 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/51 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 888 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 861 mSDsluCounter, 1835 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1405 mSDsCounter, 540 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3278 IncrementalHoareTripleChecker+Invalid, 3818 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 540 mSolverCounterUnsat, 430 mSDtfsCounter, 3278 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf90 smp84 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 26 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-17 08:49:54,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-17 08:49:54,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:54,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:54,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:55,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:55,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-17 08:49:55,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 08:49:55,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE