./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd --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 a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:09:32,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:09:32,095 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-13 15:09:32,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:09:32,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:09:32,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:09:32,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:09:32,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:09:32,139 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:09:32,139 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:09:32,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:09:32,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:09:32,140 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:09:32,140 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-13 15:09:32,140 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-13 15:09:32,140 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-13 15:09:32,140 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-13 15:09:32,140 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-13 15:09:32,140 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-13 15:09:32,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:09:32,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-13 15:09:32,143 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:09:32,144 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:09:32,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:09:32,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:09:32,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-13 15:09:32,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-13 15:09:32,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-13 15:09:32,144 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:09:32,144 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:09:32,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:09:32,145 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:09:32,145 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-13 15:09:32,145 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:09:32,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:09:32,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:09:32,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:09:32,146 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:09:32,147 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-13 15:09:32,147 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd 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 -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2024-11-13 15:09:32,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:09:32,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:09:32,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:09:32,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:09:32,472 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:09:32,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/recursive-simple/fibo_10-2.c Unable to find full path for "g++" [2024-11-13 15:09:34,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:09:34,692 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:09:34,693 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2024-11-13 15:09:34,701 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/data/4c469b447/f74ce5aa30e2489481eed83d571cbd51/FLAG1521cc57f [2024-11-13 15:09:34,725 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/data/4c469b447/f74ce5aa30e2489481eed83d571cbd51 [2024-11-13 15:09:34,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:09:34,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:09:34,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:09:34,731 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:09:34,735 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:09:34,736 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:34,737 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3f7de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34, skipping insertion in model container [2024-11-13 15:09:34,737 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:34,750 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:09:34,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:09:34,940 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:09:34,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:09:34,974 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:09:34,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34 WrapperNode [2024-11-13 15:09:34,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:09:34,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:09:34,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:09:34,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:09:34,986 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:34,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,011 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-13 15:09:35,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:09:35,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:09:35,012 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:09:35,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:09:35,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,027 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,039 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]. [2024-11-13 15:09:35,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:09:35,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:09:35,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:09:35,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:09:35,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (1/1) ... [2024-11-13 15:09:35,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:35,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:35,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:35,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-13 15:09:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:09:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:09:35,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:09:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:09:35,138 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-11-13 15:09:35,138 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-11-13 15:09:35,214 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:09:35,216 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:09:35,335 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-13 15:09:35,335 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:09:35,345 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:09:35,346 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 15:09:35,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:09:35 BoogieIcfgContainer [2024-11-13 15:09:35,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:09:35,348 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-13 15:09:35,348 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-13 15:09:35,354 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-13 15:09:35,355 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-13 15:09:35,355 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.11 03:09:34" (1/3) ... [2024-11-13 15:09:35,356 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65b331c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 03:09:35, skipping insertion in model container [2024-11-13 15:09:35,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-13 15:09:35,357 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:09:34" (2/3) ... [2024-11-13 15:09:35,357 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@65b331c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 03:09:35, skipping insertion in model container [2024-11-13 15:09:35,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-13 15:09:35,358 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:09:35" (3/3) ... [2024-11-13 15:09:35,360 INFO L333 chiAutomizerObserver]: Analyzing ICFG fibo_10-2.c [2024-11-13 15:09:35,439 INFO L299 stractBuchiCegarLoop]: Interprodecural is true [2024-11-13 15:09:35,442 INFO L300 stractBuchiCegarLoop]: Hoare is None [2024-11-13 15:09:35,442 INFO L301 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-13 15:09:35,442 INFO L302 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-13 15:09:35,443 INFO L303 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-13 15:09:35,443 INFO L304 stractBuchiCegarLoop]: Difference is false [2024-11-13 15:09:35,443 INFO L305 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-13 15:09:35,444 INFO L309 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-13 15:09:35,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:09:35,475 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:35,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:09:35,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:09:35,482 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-13 15:09:35,483 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-13 15:09:35,483 INFO L331 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-13 15:09:35,483 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 15:09:35,486 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:35,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:09:35,486 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:09:35,486 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-13 15:09:35,486 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-13 15:09:35,495 INFO L745 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2024-11-13 15:09:35,495 INFO L747 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2024-11-13 15:09:35,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:35,502 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2024-11-13 15:09:35,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:35,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90157590] [2024-11-13 15:09:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:35,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:35,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:09:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:35,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:09:35,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:35,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2024-11-13 15:09:35,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:35,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520514346] [2024-11-13 15:09:35,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:35,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:35,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:09:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:35,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:09:35,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:35,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2024-11-13 15:09:35,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:35,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438412783] [2024-11-13 15:09:35,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:35,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:35,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:09:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:35,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:09:35,834 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:09:35,834 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:09:35,835 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:09:35,835 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:09:35,835 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 15:09:35,835 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:35,835 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:09:35,835 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:09:35,836 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2024-11-13 15:09:35,837 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:09:35,837 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:09:35,851 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:35,868 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:35,875 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:35,882 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:35,905 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:36,028 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:09:36,029 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 15:09:36,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-13 15:09:36,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:36,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:36,068 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:36,069 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:36,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-13 15:09:36,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-13 15:09:36,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:36,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:36,129 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:36,129 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:36,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-13 15:09:36,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,154 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-13 15:09:36,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:36,157 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:36,174 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:36,174 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:36,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-13 15:09:36,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-13 15:09:36,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:36,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:36,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:36,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,245 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-13 15:09:36,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 15:09:36,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:36,332 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 15:09:36,335 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-13 15:09:36,335 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:09:36,335 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:09:36,335 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:09:36,336 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:09:36,336 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 15:09:36,336 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,336 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:09:36,336 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:09:36,336 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2024-11-13 15:09:36,336 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:09:36,336 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:09:36,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:36,345 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:36,351 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:36,359 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:36,374 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:36,458 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:09:36,465 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 15:09:36,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-13 15:09:36,473 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 [2024-11-13 15:09:36,489 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:36,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:36,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:36,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:36,492 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:36,498 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:36,498 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:36,502 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:09:36,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-13 15:09:36,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-13 15:09:36,525 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 [2024-11-13 15:09:36,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:36,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:36,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:36,537 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:36,537 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:36,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:36,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:36,540 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:09:36,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-13 15:09:36,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,553 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-13 15:09:36,555 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 [2024-11-13 15:09:36,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:36,567 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:36,567 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:36,567 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:36,567 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:36,567 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:36,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:36,569 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:09:36,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-13 15:09:36,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,586 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-13 15:09:36,588 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 [2024-11-13 15:09:36,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:36,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:36,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:36,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:36,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:36,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:36,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:36,604 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 15:09:36,608 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 15:09:36,611 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-13 15:09:36,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:36,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:36,615 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:36,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-13 15:09:36,632 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 15:09:36,632 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 15:09:36,635 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 15:09:36,636 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-11-13 15:09:36,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-13 15:09:36,655 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 15:09:36,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:36,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:09:36,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:36,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:09:36,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:36,877 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-11-13 15:09:36,880 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:37,027 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 54 transitions. Complement of second has 16 states. [2024-11-13 15:09:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-13 15:09:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-11-13 15:09:37,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-13 15:09:37,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:37,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-13 15:09:37,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:37,055 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-13 15:09:37,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:37,056 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2024-11-13 15:09:37,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:37,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 23 states and 31 transitions. [2024-11-13 15:09:37,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-11-13 15:09:37,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-11-13 15:09:37,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-11-13 15:09:37,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:09:37,076 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-11-13 15:09:37,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-11-13 15:09:37,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-11-13 15:09:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:09:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-13 15:09:37,115 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-13 15:09:37,115 INFO L424 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-13 15:09:37,115 INFO L331 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-13 15:09:37,115 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-11-13 15:09:37,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:37,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:09:37,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:09:37,118 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:37,120 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:37,120 INFO L745 eck$LassoCheckResult]: Stem: 135#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 136#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 121#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 120#$Ultimate##0 ~n := #in~n; 122#L8 assume !(~n < 1); 134#L10 assume !(1 == ~n); 124#L13 call #t~ret4 := fibo(~n - 1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume ~n < 1;#res := 0; 131#fiboFINAL assume true; 132#fiboEXIT >#35#return; 127#L13-1 [2024-11-13 15:09:37,121 INFO L747 eck$LassoCheckResult]: Loop: 127#L13-1 call #t~ret5 := fibo(~n - 2);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 128#$Ultimate##0 ~n := #in~n; 138#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 137#fiboEXIT >#35#return; 127#L13-1 [2024-11-13 15:09:37,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:37,121 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2024-11-13 15:09:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:37,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493563562] [2024-11-13 15:09:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:37,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:37,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:09:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:09:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493563562] [2024-11-13 15:09:37,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493563562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:37,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:37,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:09:37,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585535109] [2024-11-13 15:09:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:37,348 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 15:09:37,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:37,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2024-11-13 15:09:37,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:37,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713992101] [2024-11-13 15:09:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:37,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:37,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 15:09:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:09:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:37,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713992101] [2024-11-13 15:09:37,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713992101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:37,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:37,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:09:37,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389028506] [2024-11-13 15:09:37,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:37,466 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-13 15:09:37,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:37,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:09:37,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:09:37,470 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:09:37,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:37,562 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-13 15:09:37,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-11-13 15:09:37,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:37,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-11-13 15:09:37,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-11-13 15:09:37,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-11-13 15:09:37,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-11-13 15:09:37,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:09:37,569 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-13 15:09:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-11-13 15:09:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-13 15:09:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 15:09:37,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-13 15:09:37,572 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-13 15:09:37,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:09:37,576 INFO L424 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-13 15:09:37,576 INFO L331 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-13 15:09:37,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-11-13 15:09:37,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:37,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:09:37,578 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:09:37,578 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:37,580 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:37,580 INFO L745 eck$LassoCheckResult]: Stem: 205#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 206#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 199#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 202#$Ultimate##0 ~n := #in~n; 197#L8 assume !(~n < 1); 208#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 195#$Ultimate##0 ~n := #in~n; 198#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 213#fiboFINAL assume true; 211#fiboEXIT >#35#return; 192#L13-1 [2024-11-13 15:09:37,580 INFO L747 eck$LassoCheckResult]: Loop: 192#L13-1 call #t~ret5 := fibo(~n - 2);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume !(1 == ~n); 193#L13 call #t~ret4 := fibo(~n - 1);< 191#$Ultimate##0 ~n := #in~n; 194#L8 assume !(~n < 1); 207#L10 assume 1 == ~n;#res := 1; 209#fiboFINAL assume true; 210#fiboEXIT >#35#return; 192#L13-1 [2024-11-13 15:09:37,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:37,581 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2024-11-13 15:09:37,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:37,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980676763] [2024-11-13 15:09:37,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:37,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:37,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 15:09:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:37,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:37,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980676763] [2024-11-13 15:09:37,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980676763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:37,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042749195] [2024-11-13 15:09:37,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:37,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:37,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:37,727 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:37,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:09:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:37,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:09:37,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:37,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042749195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:09:37,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:09:37,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-13 15:09:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348416201] [2024-11-13 15:09:37,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:09:37,955 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 15:09:37,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:37,955 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2024-11-13 15:09:37,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:37,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590592684] [2024-11-13 15:09:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:37,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:37,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:09:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:37,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:09:38,143 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:09:38,144 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:09:38,144 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:09:38,144 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:09:38,144 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 15:09:38,144 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,144 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:09:38,144 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:09:38,144 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2024-11-13 15:09:38,144 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:09:38,144 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:09:38,145 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,150 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,154 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,162 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,271 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:09:38,271 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 15:09:38,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,276 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-13 15:09:38,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:38,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:38,301 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:38,301 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:38,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:38,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,325 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-13 15:09:38,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:38,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:38,347 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:38,347 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:38,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-13 15:09:38,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,367 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-13 15:09:38,370 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:38,370 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:38,387 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:38,387 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:38,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:38,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,407 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-13 15:09:38,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:38,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:38,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-11-13 15:09:38,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,446 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-13 15:09:38,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 15:09:38,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:38,468 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 15:09:38,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-11-13 15:09:38,485 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:09:38,486 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:09:38,486 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:09:38,486 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:09:38,486 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 15:09:38,486 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,486 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:09:38,486 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:09:38,486 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2024-11-13 15:09:38,486 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:09:38,486 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:09:38,487 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,495 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,499 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,501 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,504 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:38,564 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:09:38,564 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 15:09:38,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,567 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-11-13 15:09:38,571 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 [2024-11-13 15:09:38,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:38,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:38,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:38,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:38,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:38,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:38,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:38,596 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:09:38,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:38,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,621 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-13 15:09:38,626 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 [2024-11-13 15:09:38,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:38,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:38,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:38,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:38,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:38,646 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:38,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:38,649 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:09:38,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-13 15:09:38,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,674 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-13 15:09:38,678 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 [2024-11-13 15:09:38,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:38,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:38,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:38,696 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:38,696 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:38,697 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:38,697 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:38,699 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:09:38,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-11-13 15:09:38,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,725 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-13 15:09:38,728 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 [2024-11-13 15:09:38,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:38,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:38,746 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:38,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:38,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:38,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:38,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:38,753 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:09:38,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:38,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,777 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-13 15:09:38,781 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 [2024-11-13 15:09:38,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:38,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:38,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:38,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:38,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:38,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:38,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:38,805 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 15:09:38,810 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 15:09:38,810 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-13 15:09:38,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:38,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:38,815 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:38,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-13 15:09:38,818 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 15:09:38,818 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 15:09:38,818 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 15:09:38,818 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-13 15:09:38,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:38,841 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 15:09:38,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:38,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:09:38,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:39,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:39,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:09:39,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:39,263 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 [2024-11-13 15:09:39,263 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:09:39,652 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 128 states and 178 transitions. Complement of second has 40 states. [2024-11-13 15:09:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-11-13 15:09:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:09:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-13 15:09:39,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2024-11-13 15:09:39,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:39,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2024-11-13 15:09:39,658 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:39,658 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2024-11-13 15:09:39,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:39,659 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2024-11-13 15:09:39,673 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-13 15:09:39,678 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2024-11-13 15:09:39,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2024-11-13 15:09:39,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2024-11-13 15:09:39,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2024-11-13 15:09:39,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:09:39,679 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2024-11-13 15:09:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2024-11-13 15:09:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2024-11-13 15:09:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (35), 18 states have call predecessors, (35), 19 states have call successors, (35) [2024-11-13 15:09:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2024-11-13 15:09:39,694 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2024-11-13 15:09:39,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:09:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:09:39,695 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:09:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:39,903 INFO L93 Difference]: Finished difference Result 119 states and 163 transitions. [2024-11-13 15:09:39,904 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 119 states and 163 transitions. [2024-11-13 15:09:39,911 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-13 15:09:39,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 119 states to 114 states and 158 transitions. [2024-11-13 15:09:39,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 73 [2024-11-13 15:09:39,922 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 73 [2024-11-13 15:09:39,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 158 transitions. [2024-11-13 15:09:39,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:09:39,923 INFO L218 hiAutomatonCegarLoop]: Abstraction has 114 states and 158 transitions. [2024-11-13 15:09:39,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 158 transitions. [2024-11-13 15:09:39,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2024-11-13 15:09:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (39), 20 states have call predecessors, (39), 22 states have call successors, (39) [2024-11-13 15:09:39,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 143 transitions. [2024-11-13 15:09:39,945 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-13 15:09:39,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:09:39,946 INFO L424 stractBuchiCegarLoop]: Abstraction has 106 states and 143 transitions. [2024-11-13 15:09:39,946 INFO L331 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-13 15:09:39,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 143 transitions. [2024-11-13 15:09:39,949 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-11-13 15:09:39,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:09:39,949 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:09:39,951 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:39,951 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1] [2024-11-13 15:09:39,951 INFO L745 eck$LassoCheckResult]: Stem: 806#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 807#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 792#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 793#$Ultimate##0 ~n := #in~n; 809#L8 assume !(~n < 1); 810#L10 assume !(1 == ~n); 780#L13 call #t~ret4 := fibo(~n - 1);< 779#$Ultimate##0 ~n := #in~n; 781#L8 assume !(~n < 1); 816#L10 assume !(1 == ~n); 790#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 838#L8 assume !(~n < 1); 836#L10 assume !(1 == ~n); 832#L13 call #t~ret4 := fibo(~n - 1);< 791#$Ultimate##0 ~n := #in~n; 839#L8 assume !(~n < 1); 837#L10 assume 1 == ~n;#res := 1; 835#fiboFINAL assume true; 834#fiboEXIT >#35#return; 817#L13-1 call #t~ret5 := fibo(~n - 2);< 833#$Ultimate##0 ~n := #in~n; 879#L8 assume ~n < 1;#res := 0; 878#fiboFINAL assume true; 877#fiboEXIT >#37#return; 875#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 872#fiboFINAL assume true; 864#fiboEXIT >#35#return; 813#L13-1 [2024-11-13 15:09:39,951 INFO L747 eck$LassoCheckResult]: Loop: 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume !(1 == ~n); 814#L13 call #t~ret4 := fibo(~n - 1);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#35#return; 813#L13-1 call #t~ret5 := fibo(~n - 2);< 789#$Ultimate##0 ~n := #in~n; 869#L8 assume !(~n < 1); 811#L10 assume 1 == ~n;#res := 1; 815#fiboFINAL assume true; 861#fiboEXIT >#37#return; 862#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 871#fiboFINAL assume true; 865#fiboEXIT >#35#return; 813#L13-1 [2024-11-13 15:09:39,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:39,952 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2024-11-13 15:09:39,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:39,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169620552] [2024-11-13 15:09:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:39,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:40,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2024-11-13 15:09:40,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 15:09:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:40,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 15:09:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:40,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:09:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:09:40,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:40,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169620552] [2024-11-13 15:09:40,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169620552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:40,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380918858] [2024-11-13 15:09:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:40,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:40,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:40,289 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:40,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:09:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:40,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:09:40,348 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:09:40,441 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:40,851 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:09:40,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380918858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:09:40,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:09:40,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2024-11-13 15:09:40,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053272235] [2024-11-13 15:09:40,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:09:40,852 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 15:09:40,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:40,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1138642743, now seen corresponding path program 1 times [2024-11-13 15:09:40,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:40,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849087012] [2024-11-13 15:09:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:40,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:40,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 15:09:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:40,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 15:09:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:40,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:09:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:09:41,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:41,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849087012] [2024-11-13 15:09:41,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849087012] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:41,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484292257] [2024-11-13 15:09:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:41,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:41,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:41,015 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:41,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:09:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:41,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:09:41,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 15:09:41,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 15:09:41,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484292257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:09:41,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:09:41,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 15:09:41,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974489914] [2024-11-13 15:09:41,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:09:41,354 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-13 15:09:41,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:09:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:09:41,355 INFO L87 Difference]: Start difference. First operand 106 states and 143 transitions. cyclomatic complexity: 42 Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:09:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:41,506 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2024-11-13 15:09:41,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 76 transitions. [2024-11-13 15:09:41,508 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:41,513 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 54 states and 70 transitions. [2024-11-13 15:09:41,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2024-11-13 15:09:41,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2024-11-13 15:09:41,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 70 transitions. [2024-11-13 15:09:41,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:09:41,514 INFO L218 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-11-13 15:09:41,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 70 transitions. [2024-11-13 15:09:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-13 15:09:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 37 states have internal predecessors, (38), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (21), 9 states have call predecessors, (21), 9 states have call successors, (21) [2024-11-13 15:09:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 70 transitions. [2024-11-13 15:09:41,519 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-11-13 15:09:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:09:41,520 INFO L424 stractBuchiCegarLoop]: Abstraction has 54 states and 70 transitions. [2024-11-13 15:09:41,520 INFO L331 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-13 15:09:41,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 70 transitions. [2024-11-13 15:09:41,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:41,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:09:41,522 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:09:41,523 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:41,523 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1] [2024-11-13 15:09:41,523 INFO L745 eck$LassoCheckResult]: Stem: 1377#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 1378#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 1371#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1372#$Ultimate##0 ~n := #in~n; 1387#L8 assume !(~n < 1); 1386#L10 assume !(1 == ~n); 1359#L13 call #t~ret4 := fibo(~n - 1);< 1358#$Ultimate##0 ~n := #in~n; 1360#L8 assume !(~n < 1); 1380#L10 assume !(1 == ~n); 1364#L13 call #t~ret4 := fibo(~n - 1);< 1365#$Ultimate##0 ~n := #in~n; 1385#L8 assume !(~n < 1); 1403#L10 assume !(1 == ~n); 1375#L13 call #t~ret4 := fibo(~n - 1);< 1365#$Ultimate##0 ~n := #in~n; 1385#L8 assume !(~n < 1); 1403#L10 assume !(1 == ~n); 1375#L13 call #t~ret4 := fibo(~n - 1);< 1365#$Ultimate##0 ~n := #in~n; 1384#L8 assume !(~n < 1); 1381#L10 assume 1 == ~n;#res := 1; 1382#fiboFINAL assume true; 1374#fiboEXIT >#35#return; 1376#L13-1 call #t~ret5 := fibo(~n - 2);< 1402#$Ultimate##0 ~n := #in~n; 1408#L8 assume ~n < 1;#res := 0; 1407#fiboFINAL assume true; 1401#fiboEXIT >#37#return; 1399#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1397#fiboFINAL assume true; 1394#fiboEXIT >#35#return; 1368#L13-1 [2024-11-13 15:09:41,523 INFO L747 eck$LassoCheckResult]: Loop: 1368#L13-1 call #t~ret5 := fibo(~n - 2);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume !(~n < 1); 1389#L10 assume !(1 == ~n); 1367#L13 call #t~ret4 := fibo(~n - 1);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume !(~n < 1); 1389#L10 assume !(1 == ~n); 1367#L13 call #t~ret4 := fibo(~n - 1);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume !(~n < 1); 1389#L10 assume !(1 == ~n); 1367#L13 call #t~ret4 := fibo(~n - 1);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume !(~n < 1); 1389#L10 assume 1 == ~n;#res := 1; 1404#fiboFINAL assume true; 1405#fiboEXIT >#35#return; 1356#L13-1 call #t~ret5 := fibo(~n - 2);< 1355#$Ultimate##0 ~n := #in~n; 1357#L8 assume ~n < 1;#res := 0; 1379#fiboFINAL assume true; 1400#fiboEXIT >#37#return; 1366#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1370#fiboFINAL assume true; 1373#fiboEXIT >#35#return; 1368#L13-1 call #t~ret5 := fibo(~n - 2);< 1363#$Ultimate##0 ~n := #in~n; 1388#L8 assume ~n < 1;#res := 0; 1379#fiboFINAL assume true; 1400#fiboEXIT >#37#return; 1391#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1398#fiboFINAL assume true; 1395#fiboEXIT >#35#return; 1368#L13-1 [2024-11-13 15:09:41,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 2 times [2024-11-13 15:09:41,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:41,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570534943] [2024-11-13 15:09:41,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:41,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:41,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 15:09:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:41,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 15:09:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:41,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:09:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:09:41,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:41,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570534943] [2024-11-13 15:09:41,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570534943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:41,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507031209] [2024-11-13 15:09:41,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:09:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:41,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:41,823 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:41,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:09:41,879 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:09:41,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:09:41,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:09:41,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:09:41,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:42,339 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:09:42,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507031209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:09:42,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:09:42,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2024-11-13 15:09:42,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272884161] [2024-11-13 15:09:42,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:09:42,340 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 15:09:42,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:42,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1083596768, now seen corresponding path program 1 times [2024-11-13 15:09:42,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:42,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483492586] [2024-11-13 15:09:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:42,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:42,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 15:09:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:42,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 15:09:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:42,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 15:09:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:42,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:09:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:42,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 15:09:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 15:09:42,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:42,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483492586] [2024-11-13 15:09:42,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483492586] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:42,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509517382] [2024-11-13 15:09:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:42,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:42,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:42,582 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:42,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:09:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:42,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:09:42,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-13 15:09:42,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:43,077 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 15:09:43,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509517382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:09:43,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:09:43,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 14 [2024-11-13 15:09:43,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213715735] [2024-11-13 15:09:43,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:09:43,078 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-13 15:09:43,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:43,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:09:43,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:09:43,079 INFO L87 Difference]: Start difference. First operand 54 states and 70 transitions. cyclomatic complexity: 18 Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 15:09:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:43,569 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2024-11-13 15:09:43,569 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 110 states and 129 transitions. [2024-11-13 15:09:43,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:43,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 110 states to 99 states and 118 transitions. [2024-11-13 15:09:43,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2024-11-13 15:09:43,576 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2024-11-13 15:09:43,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 118 transitions. [2024-11-13 15:09:43,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:09:43,576 INFO L218 hiAutomatonCegarLoop]: Abstraction has 99 states and 118 transitions. [2024-11-13 15:09:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 118 transitions. [2024-11-13 15:09:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-13 15:09:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.046875) internal successors, (67), 66 states have internal predecessors, (67), 23 states have call successors, (23), 14 states have call predecessors, (23), 12 states have return successors, (28), 18 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-13 15:09:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2024-11-13 15:09:43,592 INFO L240 hiAutomatonCegarLoop]: Abstraction has 99 states and 118 transitions. [2024-11-13 15:09:43,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:09:43,597 INFO L424 stractBuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2024-11-13 15:09:43,597 INFO L331 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-13 15:09:43,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 118 transitions. [2024-11-13 15:09:43,598 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 15:09:43,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:09:43,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:09:43,599 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 8, 8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:43,602 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-13 15:09:43,603 INFO L745 eck$LassoCheckResult]: Stem: 2063#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 2064#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 2059#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 2060#$Ultimate##0 ~n := #in~n; 2066#L8 assume !(~n < 1); 2067#L10 assume !(1 == ~n); 2050#L13 call #t~ret4 := fibo(~n - 1);< 2049#$Ultimate##0 ~n := #in~n; 2051#L8 assume !(~n < 1); 2091#L10 assume !(1 == ~n); 2055#L13 call #t~ret4 := fibo(~n - 1);< 2056#$Ultimate##0 ~n := #in~n; 2090#L8 assume !(~n < 1); 2089#L10 assume !(1 == ~n); 2085#L13 call #t~ret4 := fibo(~n - 1);< 2088#$Ultimate##0 ~n := #in~n; 2087#L8 assume !(~n < 1); 2086#L10 assume !(1 == ~n); 2081#L13 call #t~ret4 := fibo(~n - 1);< 2084#$Ultimate##0 ~n := #in~n; 2083#L8 assume !(~n < 1); 2082#L10 assume !(1 == ~n); 2077#L13 call #t~ret4 := fibo(~n - 1);< 2080#$Ultimate##0 ~n := #in~n; 2079#L8 assume !(~n < 1); 2078#L10 assume !(1 == ~n); 2069#L13 call #t~ret4 := fibo(~n - 1);< 2075#$Ultimate##0 ~n := #in~n; 2076#L8 assume !(~n < 1); 2144#L10 assume !(1 == ~n); 2070#L13 call #t~ret4 := fibo(~n - 1);< 2075#$Ultimate##0 ~n := #in~n; 2076#L8 assume !(~n < 1); 2144#L10 assume !(1 == ~n); 2070#L13 call #t~ret4 := fibo(~n - 1);< 2075#$Ultimate##0 ~n := #in~n; 2074#L8 assume !(~n < 1); 2068#L10 assume 1 == ~n;#res := 1; 2071#fiboFINAL assume true; 2102#fiboEXIT >#35#return; 2047#L13-1 call #t~ret5 := fibo(~n - 2);< 2046#$Ultimate##0 ~n := #in~n; 2048#L8 assume ~n < 1;#res := 0; 2065#fiboFINAL assume true; 2119#fiboEXIT >#37#return; 2117#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2111#fiboFINAL assume true; 2107#fiboEXIT >#35#return; 2097#L13-1 [2024-11-13 15:09:43,603 INFO L747 eck$LassoCheckResult]: Loop: 2097#L13-1 call #t~ret5 := fibo(~n - 2);< 2103#$Ultimate##0 ~n := #in~n; 2115#L8 assume !(~n < 1); 2110#L10 assume !(1 == ~n); 2096#L13 call #t~ret4 := fibo(~n - 1);< 2103#$Ultimate##0 ~n := #in~n; 2115#L8 assume !(~n < 1); 2110#L10 assume !(1 == ~n); 2096#L13 call #t~ret4 := fibo(~n - 1);< 2103#$Ultimate##0 ~n := #in~n; 2115#L8 assume !(~n < 1); 2110#L10 assume 1 == ~n;#res := 1; 2104#fiboFINAL assume true; 2100#fiboEXIT >#35#return; 2093#L13-1 call #t~ret5 := fibo(~n - 2);< 2099#$Ultimate##0 ~n := #in~n; 2124#L8 assume ~n < 1;#res := 0; 2116#fiboFINAL assume true; 2120#fiboEXIT >#37#return; 2121#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2143#fiboFINAL assume true; 2105#fiboEXIT >#35#return; 2097#L13-1 [2024-11-13 15:09:43,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:43,604 INFO L85 PathProgramCache]: Analyzing trace with hash -683438758, now seen corresponding path program 3 times [2024-11-13 15:09:43,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:43,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012774061] [2024-11-13 15:09:43,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:43,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:43,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 15:09:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:44,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 15:09:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:44,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:09:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:09:44,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:44,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012774061] [2024-11-13 15:09:44,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012774061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:44,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570855342] [2024-11-13 15:09:44,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:09:44,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:44,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:44,088 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:44,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:09:44,159 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-13 15:09:44,159 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:09:44,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 15:09:44,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:09:44,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:44,687 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 155 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:09:44,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570855342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:09:44,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:09:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 23 [2024-11-13 15:09:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457918975] [2024-11-13 15:09:44,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:09:44,688 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 15:09:44,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash -2000232554, now seen corresponding path program 2 times [2024-11-13 15:09:44,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:44,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074503026] [2024-11-13 15:09:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:44,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:44,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:09:44,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:44,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:09:45,014 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:09:45,014 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:09:45,014 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:09:45,014 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:09:45,014 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 15:09:45,014 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:45,014 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:09:45,014 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:09:45,014 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2024-11-13 15:09:45,015 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:09:45,015 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:09:45,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:45,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:45,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:45,032 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:45,090 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:09:45,090 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 15:09:45,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:45,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:45,094 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:45,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-13 15:09:45,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:45,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:45,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-11-13 15:09:45,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:45,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:45,142 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:45,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-13 15:09:45,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 15:09:45,147 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:45,839 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 15:09:45,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2024-11-13 15:09:45,843 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:09:45,843 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:09:45,843 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:09:45,843 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:09:45,843 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 15:09:45,843 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:45,843 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:09:45,843 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:09:45,843 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2024-11-13 15:09:45,843 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:09:45,843 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:09:45,844 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:45,854 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:45,857 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:45,860 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:45,909 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:09:45,909 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 15:09:45,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:45,912 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:45,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-13 15:09:45,915 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 [2024-11-13 15:09:45,929 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:45,929 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:45,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:45,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:45,929 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:45,930 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:45,931 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:45,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 15:09:45,940 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-13 15:09:45,940 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-13 15:09:45,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:45,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:45,943 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:45,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-11-13 15:09:45,945 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 15:09:45,946 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 15:09:45,946 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 15:09:45,946 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2024-11-13 15:09:45,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-11-13 15:09:45,964 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 15:09:45,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:46,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:09:46,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:46,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:09:46,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:46,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2024-11-13 15:09:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:09:46,668 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-11-13 15:09:46,668 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:09:46,781 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 106 states and 125 transitions. Complement of second has 11 states. [2024-11-13 15:09:46,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-13 15:09:46,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:09:46,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-11-13 15:09:46,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 48 letters. Loop has 22 letters. [2024-11-13 15:09:46,783 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:46,783 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 15:09:46,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:46,870 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:09:46,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:47,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:09:47,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:09:47,270 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2024-11-13 15:09:47,270 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:09:47,398 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 106 states and 125 transitions. Complement of second has 11 states. [2024-11-13 15:09:47,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-13 15:09:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:09:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-11-13 15:09:47,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 48 letters. Loop has 22 letters. [2024-11-13 15:09:47,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:47,404 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 15:09:47,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:47,487 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:09:47,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:47,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:09:47,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:09:47,931 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-11-13 15:09:47,932 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:09:48,249 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 21. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 537 states and 697 transitions. Complement of second has 132 states. [2024-11-13 15:09:48,249 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 [2024-11-13 15:09:48,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-13 15:09:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 45 transitions. [2024-11-13 15:09:48,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 48 letters. Loop has 22 letters. [2024-11-13 15:09:48,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:48,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 70 letters. Loop has 22 letters. [2024-11-13 15:09:48,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:48,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 48 letters. Loop has 44 letters. [2024-11-13 15:09:48,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:48,257 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 537 states and 697 transitions. [2024-11-13 15:09:48,270 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-11-13 15:09:48,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 537 states to 382 states and 513 transitions. [2024-11-13 15:09:48,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 161 [2024-11-13 15:09:48,280 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2024-11-13 15:09:48,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 382 states and 513 transitions. [2024-11-13 15:09:48,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:09:48,280 INFO L218 hiAutomatonCegarLoop]: Abstraction has 382 states and 513 transitions. [2024-11-13 15:09:48,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states and 513 transitions. [2024-11-13 15:09:48,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 337. [2024-11-13 15:09:48,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 206 states have (on average 1.0922330097087378) internal successors, (225), 219 states have internal predecessors, (225), 80 states have call successors, (84), 42 states have call predecessors, (84), 51 states have return successors, (126), 75 states have call predecessors, (126), 70 states have call successors, (126) [2024-11-13 15:09:48,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 435 transitions. [2024-11-13 15:09:48,320 INFO L240 hiAutomatonCegarLoop]: Abstraction has 337 states and 435 transitions. [2024-11-13 15:09:48,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:48,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:09:48,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:09:48,321 INFO L87 Difference]: Start difference. First operand 337 states and 435 transitions. Second operand has 24 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 15 states have internal predecessors, (43), 13 states have call successors, (13), 8 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 15:09:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:48,775 INFO L93 Difference]: Finished difference Result 462 states and 593 transitions. [2024-11-13 15:09:48,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 462 states and 593 transitions. [2024-11-13 15:09:48,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-11-13 15:09:48,790 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 462 states to 455 states and 580 transitions. [2024-11-13 15:09:48,790 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 210 [2024-11-13 15:09:48,791 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 210 [2024-11-13 15:09:48,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 455 states and 580 transitions. [2024-11-13 15:09:48,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:09:48,791 INFO L218 hiAutomatonCegarLoop]: Abstraction has 455 states and 580 transitions. [2024-11-13 15:09:48,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states and 580 transitions. [2024-11-13 15:09:48,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 435. [2024-11-13 15:09:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 267 states have (on average 1.0823970037453183) internal successors, (289), 281 states have internal predecessors, (289), 106 states have call successors, (110), 55 states have call predecessors, (110), 62 states have return successors, (159), 98 states have call predecessors, (159), 94 states have call successors, (159) [2024-11-13 15:09:48,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 558 transitions. [2024-11-13 15:09:48,813 INFO L240 hiAutomatonCegarLoop]: Abstraction has 435 states and 558 transitions. [2024-11-13 15:09:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:09:48,814 INFO L424 stractBuchiCegarLoop]: Abstraction has 435 states and 558 transitions. [2024-11-13 15:09:48,814 INFO L331 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-13 15:09:48,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 435 states and 558 transitions. [2024-11-13 15:09:48,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-11-13 15:09:48,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 15:09:48,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 15:09:48,819 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [13, 12, 11, 11, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:48,819 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-13 15:09:48,820 INFO L745 eck$LassoCheckResult]: Stem: 4917#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 4918#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4908#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 4909#$Ultimate##0 ~n := #in~n; 4958#L8 assume !(~n < 1); 4957#L10 assume !(1 == ~n); 4953#L13 call #t~ret4 := fibo(~n - 1);< 4956#$Ultimate##0 ~n := #in~n; 4955#L8 assume !(~n < 1); 4954#L10 assume !(1 == ~n); 4949#L13 call #t~ret4 := fibo(~n - 1);< 4952#$Ultimate##0 ~n := #in~n; 4951#L8 assume !(~n < 1); 4950#L10 assume !(1 == ~n); 4945#L13 call #t~ret4 := fibo(~n - 1);< 4948#$Ultimate##0 ~n := #in~n; 4947#L8 assume !(~n < 1); 4946#L10 assume !(1 == ~n); 4941#L13 call #t~ret4 := fibo(~n - 1);< 4944#$Ultimate##0 ~n := #in~n; 4943#L8 assume !(~n < 1); 4942#L10 assume !(1 == ~n); 4937#L13 call #t~ret4 := fibo(~n - 1);< 4940#$Ultimate##0 ~n := #in~n; 4939#L8 assume !(~n < 1); 4938#L10 assume !(1 == ~n); 4933#L13 call #t~ret4 := fibo(~n - 1);< 4936#$Ultimate##0 ~n := #in~n; 4935#L8 assume !(~n < 1); 4934#L10 assume !(1 == ~n); 4914#L13 call #t~ret4 := fibo(~n - 1);< 4930#$Ultimate##0 ~n := #in~n; 4932#L8 assume !(~n < 1); 5268#L10 assume !(1 == ~n); 4913#L13 call #t~ret4 := fibo(~n - 1);< 4930#$Ultimate##0 ~n := #in~n; 4932#L8 assume !(~n < 1); 5268#L10 assume !(1 == ~n); 4913#L13 call #t~ret4 := fibo(~n - 1);< 4930#$Ultimate##0 ~n := #in~n; 4931#L8 assume !(~n < 1); 5315#L10 assume 1 == ~n;#res := 1; 5313#fiboFINAL assume true; 4912#fiboEXIT >#35#return; 4915#L13-1 call #t~ret5 := fibo(~n - 2);< 5284#$Ultimate##0 ~n := #in~n; 5288#L8 assume ~n < 1;#res := 0; 5287#fiboFINAL assume true; 5283#fiboEXIT >#37#return; 5282#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5281#fiboFINAL assume true; 5267#fiboEXIT >#35#return; 4923#L13-1 call #t~ret5 := fibo(~n - 2);< 5244#$Ultimate##0 ~n := #in~n; 5273#L8 assume !(~n < 1); 5272#L10 assume !(1 == ~n); 4903#L13 call #t~ret4 := fibo(~n - 1);< 5046#$Ultimate##0 ~n := #in~n; 5045#L8 assume !(~n < 1); 5003#L10 assume !(1 == ~n); 4984#L13 call #t~ret4 := fibo(~n - 1);< 4992#$Ultimate##0 [2024-11-13 15:09:48,820 INFO L747 eck$LassoCheckResult]: Loop: 4992#$Ultimate##0 ~n := #in~n; 4999#L8 assume !(~n < 1); 4998#L10 assume !(1 == ~n); 4983#L13 call #t~ret4 := fibo(~n - 1);< 4992#$Ultimate##0 [2024-11-13 15:09:48,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:48,820 INFO L85 PathProgramCache]: Analyzing trace with hash -366223317, now seen corresponding path program 4 times [2024-11-13 15:09:48,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:48,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370602353] [2024-11-13 15:09:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:48,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:49,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 15:09:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:49,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 15:09:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:49,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 15:09:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 198 proven. 72 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 15:09:49,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:49,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370602353] [2024-11-13 15:09:49,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370602353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:09:49,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154528460] [2024-11-13 15:09:49,334 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:09:49,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:09:49,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:49,338 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:09:49,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 15:09:49,418 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:09:49,418 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:09:49,421 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:09:49,423 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 199 proven. 72 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 15:09:49,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:09:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 199 proven. 72 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 15:09:49,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154528460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:09:49,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:09:49,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 24 [2024-11-13 15:09:49,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8844058] [2024-11-13 15:09:49,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:09:49,924 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 15:09:49,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 2 times [2024-11-13 15:09:49,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:49,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033192549] [2024-11-13 15:09:49,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:49,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:49,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:09:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:09:49,932 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:09:49,980 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:09:49,981 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:09:49,981 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:09:49,981 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:09:49,981 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 15:09:49,981 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:49,981 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:09:49,981 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:09:49,981 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration7_Loop [2024-11-13 15:09:49,981 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:09:49,981 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:09:49,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:49,986 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:49,989 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:49,992 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:49,994 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:50,058 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:09:50,058 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 15:09:50,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,065 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-11-13 15:09:50,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:50,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:50,088 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:50,088 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:50,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:50,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,108 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-11-13 15:09:50,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:50,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:50,128 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:50,129 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:50,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-11-13 15:09:50,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,148 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-11-13 15:09:50,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:50,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:50,169 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:50,170 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:50,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2024-11-13 15:09:50,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,189 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-11-13 15:09:50,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:50,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:50,213 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 15:09:50,213 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 15:09:50,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-11-13 15:09:50,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,238 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-11-13 15:09:50,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 15:09:50,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:50,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:50,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,284 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-11-13 15:09:50,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 15:09:50,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 15:09:50,398 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 15:09:50,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:50,402 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 15:09:50,402 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 15:09:50,402 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 15:09:50,402 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 15:09:50,402 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 15:09:50,403 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,403 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 15:09:50,403 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 15:09:50,403 INFO L132 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration7_Loop [2024-11-13 15:09:50,403 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 15:09:50,403 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 15:09:50,404 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:50,411 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:50,415 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:50,424 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:50,427 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 15:09:50,461 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 15:09:50,461 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 15:09:50,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,463 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-11-13 15:09:50,466 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 [2024-11-13 15:09:50,480 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:50,480 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:50,480 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:50,480 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:50,480 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:50,481 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:50,481 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:50,483 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:09:50,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2024-11-13 15:09:50,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,507 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,510 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 [2024-11-13 15:09:50,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-11-13 15:09:50,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:50,527 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:50,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:50,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:50,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:50,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:50,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:50,532 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 15:09:50,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:50,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,552 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,555 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 [2024-11-13 15:09:50,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-11-13 15:09:50,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 15:09:50,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 15:09:50,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 15:09:50,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 15:09:50,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 15:09:50,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 15:09:50,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 15:09:50,576 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 15:09:50,579 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 15:09:50,580 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-13 15:09:50,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 15:09:50,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:09:50,583 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 15:09:50,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-11-13 15:09:50,586 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 15:09:50,586 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 15:09:50,586 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 15:09:50,586 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2024-11-13 15:09:50,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2024-11-13 15:09:50,604 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 15:09:50,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:50,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:09:50,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:50,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:51,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:09:51,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:51,094 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-13 15:09:51,094 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:09:51,166 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 460 states and 583 transitions. Complement of second has 15 states. [2024-11-13 15:09:51,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-13 15:09:51,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:09:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-13 15:09:51,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 61 letters. Loop has 4 letters. [2024-11-13 15:09:51,172 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:51,172 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 15:09:51,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:51,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:09:51,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:51,596 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:09:51,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:51,625 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-13 15:09:51,626 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:09:51,704 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 460 states and 583 transitions. Complement of second has 15 states. [2024-11-13 15:09:51,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-13 15:09:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:09:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-13 15:09:51,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 61 letters. Loop has 4 letters. [2024-11-13 15:09:51,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:51,706 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 15:09:51,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:51,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:09:51,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:52,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:09:52,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:09:52,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:52,153 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-13 15:09:52,153 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:09:52,271 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 435 states and 558 transitions. cyclomatic complexity: 127. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 589 states and 714 transitions. Complement of second has 19 states. [2024-11-13 15:09:52,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-11-13 15:09:52,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:09:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2024-11-13 15:09:52,274 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 61 letters. Loop has 4 letters. [2024-11-13 15:09:52,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:52,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 65 letters. Loop has 4 letters. [2024-11-13 15:09:52,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:52,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 61 letters. Loop has 8 letters. [2024-11-13 15:09:52,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 15:09:52,278 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 589 states and 714 transitions. [2024-11-13 15:09:52,292 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-11-13 15:09:52,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 589 states to 450 states and 574 transitions. [2024-11-13 15:09:52,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 160 [2024-11-13 15:09:52,306 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 163 [2024-11-13 15:09:52,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 574 transitions. [2024-11-13 15:09:52,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 15:09:52,306 INFO L218 hiAutomatonCegarLoop]: Abstraction has 450 states and 574 transitions. [2024-11-13 15:09:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 574 transitions. [2024-11-13 15:09:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 445. [2024-11-13 15:09:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 276 states have (on average 1.0797101449275361) internal successors, (298), 290 states have internal predecessors, (298), 107 states have call successors, (111), 56 states have call predecessors, (111), 62 states have return successors, (159), 98 states have call predecessors, (159), 94 states have call successors, (159) [2024-11-13 15:09:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 568 transitions. [2024-11-13 15:09:52,339 INFO L240 hiAutomatonCegarLoop]: Abstraction has 445 states and 568 transitions. [2024-11-13 15:09:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:52,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:09:52,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:09:52,341 INFO L87 Difference]: Start difference. First operand 445 states and 568 transitions. Second operand has 24 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 14 states have internal predecessors, (43), 12 states have call successors, (14), 12 states have call predecessors, (14), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:09:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:52,827 INFO L93 Difference]: Finished difference Result 469 states and 569 transitions. [2024-11-13 15:09:52,827 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 469 states and 569 transitions. [2024-11-13 15:09:52,834 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-13 15:09:52,834 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 469 states to 0 states and 0 transitions. [2024-11-13 15:09:52,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-13 15:09:52,835 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-13 15:09:52,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-13 15:09:52,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-13 15:09:52,835 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 15:09:52,835 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 15:09:52,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:09:52,836 INFO L424 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 15:09:52,836 INFO L331 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2024-11-13 15:09:52,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-13 15:09:52,836 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-13 15:09:52,837 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-13 15:09:52,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.11 03:09:52 BoogieIcfgContainer [2024-11-13 15:09:52,846 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-13 15:09:52,847 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:09:52,847 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:09:52,847 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:09:52,848 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:09:35" (3/4) ... [2024-11-13 15:09:52,850 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 15:09:52,851 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:09:52,852 INFO L158 Benchmark]: Toolchain (without parser) took 18123.36ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 91.8MB in the beginning and 55.8MB in the end (delta: 36.0MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2024-11-13 15:09:52,853 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:09:52,853 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.36ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 81.5MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:09:52,853 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.77ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.7MB in the end (delta: 871.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:09:52,854 INFO L158 Benchmark]: Boogie Preprocessor took 39.28ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 79.4MB in the end (delta: 860.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:09:52,854 INFO L158 Benchmark]: RCFGBuilder took 294.54ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 70.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:09:52,854 INFO L158 Benchmark]: BuchiAutomizer took 17498.31ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 70.6MB in the beginning and 55.8MB in the end (delta: 14.7MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2024-11-13 15:09:52,854 INFO L158 Benchmark]: Witness Printer took 4.79ms. Allocated memory is still 142.6MB. Free memory was 55.8MB in the beginning and 55.8MB in the end (delta: 18.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:09:52,857 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory was 41.7MB in the beginning and 41.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.36ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 81.5MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.77ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.7MB in the end (delta: 871.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.28ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 79.4MB in the end (delta: 860.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 294.54ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 70.6MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 17498.31ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 70.6MB in the beginning and 55.8MB in the end (delta: 14.7MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. * Witness Printer took 4.79ms. Allocated memory is still 142.6MB. Free memory was 55.8MB in the beginning and 55.8MB in the end (delta: 18.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (6 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 11 locations. One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. 6 modules have a trivial ranking function, the largest among these consists of 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 17.4s and 8 iterations. TraceHistogramMax:13. Analysis of lassos took 9.8s. Construction of modules took 1.5s. Büchi inclusion checks took 5.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 92 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/26 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 517 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 485 mSDsluCounter, 720 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 509 mSDsCounter, 308 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1524 IncrementalHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 308 mSolverCounterUnsat, 211 mSDtfsCounter, 1524 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp86 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq178 hnf93 smp76 dnf100 smp100 tf112 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-13 15:09:52,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 15:09:53,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 15:09:53,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 15:09:53,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:09:53,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-13 15:09:53,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 15:09:54,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:09:54,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-11-13 15:09:54,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fbf91a3-6e20-4c99-999c-7862abfb24f5/bin/uautomizer-verify-qhAvR1uOyd/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