./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/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_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/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_c415f329-c201-41f6-a134-9337a255a36c/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 b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:45:50,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:45:51,088 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-11-13 14:45:51,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:45:51,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:45:51,134 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:45:51,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:45:51,135 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:45:51,136 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:45:51,136 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:45:51,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:45:51,138 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:45:51,138 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:45:51,139 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-13 14:45:51,140 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-13 14:45:51,140 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-13 14:45:51,140 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-13 14:45:51,140 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-13 14:45:51,141 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-13 14:45:51,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:45:51,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-13 14:45:51,141 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:45:51,141 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:45:51,141 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:45:51,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:45:51,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-13 14:45:51,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-13 14:45:51,142 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-13 14:45:51,142 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:45:51,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:45:51,142 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:45:51,142 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:45:51,143 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-13 14:45:51,143 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:45:51,143 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:45:51,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:45:51,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:45:51,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:45:51,145 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-13 14:45:51,145 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_c415f329-c201-41f6-a134-9337a255a36c/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 -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2024-11-13 14:45:51,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:45:51,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:45:51,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:45:51,528 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:45:51,528 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:45:51,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/recursive/Fibonacci02.c Unable to find full path for "g++" [2024-11-13 14:45:53,462 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:45:53,815 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:45:53,816 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/sv-benchmarks/c/recursive/Fibonacci02.c [2024-11-13 14:45:53,843 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/data/45b0efdaa/c0740916e8744bc98e8fbe0c86414992/FLAGec59c8e00 [2024-11-13 14:45:54,061 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/data/45b0efdaa/c0740916e8744bc98e8fbe0c86414992 [2024-11-13 14:45:54,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:45:54,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:45:54,069 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:45:54,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:45:54,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:45:54,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,079 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a9f91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54, skipping insertion in model container [2024-11-13 14:45:54,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,094 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:45:54,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:45:54,301 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:45:54,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:45:54,332 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:45:54,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54 WrapperNode [2024-11-13 14:45:54,333 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:45:54,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:45:54,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:45:54,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:45:54,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,349 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,368 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2024-11-13 14:45:54,369 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:45:54,369 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:45:54,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:45:54,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:45:54,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,380 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,394 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 14:45:54,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,395 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,398 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,404 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,405 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,406 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:45:54,407 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:45:54,407 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:45:54,408 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:45:54,409 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (1/1) ... [2024-11-13 14:45:54,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:54,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:54,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:54,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-13 14:45:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-13 14:45:54,482 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-13 14:45:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:45:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:45:54,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:45:54,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:45:54,549 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:45:54,551 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:45:54,686 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-13 14:45:54,686 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:45:54,699 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:45:54,700 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 14:45:54,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:54 BoogieIcfgContainer [2024-11-13 14:45:54,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:45:54,701 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-13 14:45:54,703 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-13 14:45:54,708 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-13 14:45:54,708 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-13 14:45:54,709 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.11 02:45:54" (1/3) ... [2024-11-13 14:45:54,710 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7663e13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 02:45:54, skipping insertion in model container [2024-11-13 14:45:54,710 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-13 14:45:54,710 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:54" (2/3) ... [2024-11-13 14:45:54,711 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7663e13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 02:45:54, skipping insertion in model container [2024-11-13 14:45:54,711 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-13 14:45:54,711 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:54" (3/3) ... [2024-11-13 14:45:54,712 INFO L333 chiAutomizerObserver]: Analyzing ICFG Fibonacci02.c [2024-11-13 14:45:54,779 INFO L299 stractBuchiCegarLoop]: Interprodecural is true [2024-11-13 14:45:54,779 INFO L300 stractBuchiCegarLoop]: Hoare is None [2024-11-13 14:45:54,780 INFO L301 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-13 14:45:54,780 INFO L302 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-13 14:45:54,781 INFO L303 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-13 14:45:54,782 INFO L304 stractBuchiCegarLoop]: Difference is false [2024-11-13 14:45:54,782 INFO L305 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-13 14:45:54,782 INFO L309 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-13 14:45:54,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:45:54,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 14:45:54,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 14:45:54,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 14:45:54,811 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-13 14:45:54,811 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-13 14:45:54,812 INFO L331 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-13 14:45:54,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:45:54,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 14:45:54,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 14:45:54,814 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 14:45:54,814 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-13 14:45:54,814 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-13 14:45:54,821 INFO L745 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 8#L29true call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 14#$Ultimate##0true [2024-11-13 14:45:54,822 INFO L747 eck$LassoCheckResult]: Loop: 14#$Ultimate##0true ~n := #in~n; 4#L17true assume !(~n < 1); 18#L19true assume !(1 == ~n); 16#L22true call #t~ret4 := fibonacci(~n - 1);< 14#$Ultimate##0true [2024-11-13 14:45:54,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash 42783, now seen corresponding path program 1 times [2024-11-13 14:45:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:54,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792341242] [2024-11-13 14:45:54,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:54,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:54,915 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:45:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:54,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:45:54,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:54,939 INFO L85 PathProgramCache]: Analyzing trace with hash 927643, now seen corresponding path program 1 times [2024-11-13 14:45:54,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:54,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328476632] [2024-11-13 14:45:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:54,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:54,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:45:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:54,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:45:54,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash 856297401, now seen corresponding path program 1 times [2024-11-13 14:45:54,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:54,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306423110] [2024-11-13 14:45:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:54,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:54,970 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:45:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:54,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:45:55,153 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:45:55,153 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:45:55,153 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:45:55,153 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:45:55,154 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 14:45:55,154 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,154 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:45:55,154 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:45:55,154 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration1_Loop [2024-11-13 14:45:55,154 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:45:55,154 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:45:55,166 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,182 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,188 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,192 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,213 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,305 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:45:55,305 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 14:45:55,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,311 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-11-13 14:45:55,313 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:45:55,313 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:55,332 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 14:45:55,332 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 14:45:55,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-11-13 14:45:55,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-11-13 14:45:55,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:45:55,356 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:55,375 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 14:45:55,375 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 14:45:55,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-11-13 14:45:55,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,398 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-11-13 14:45:55,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:45:55,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:55,412 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 14:45:55,413 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 14:45:55,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-11-13 14:45:55,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:45:55,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-11-13 14:45:55,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:55,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-11-13 14:45:55,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-11-13 14:45:55,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 14:45:55,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:55,523 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 14:45:55,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2024-11-13 14:45:55,526 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:45:55,526 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:45:55,526 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:45:55,526 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:45:55,527 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 14:45:55,527 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,527 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:45:55,527 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:45:55,527 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration1_Loop [2024-11-13 14:45:55,527 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:45:55,527 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:45:55,528 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,545 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,556 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:55,640 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:45:55,646 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 14:45:55,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-11-13 14:45:55,652 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-13 14:45:55,666 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:45:55,666 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:45:55,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:45:55,667 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:45:55,667 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:45:55,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:45:55,673 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:45:55,680 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 14:45:55,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-11-13 14:45:55,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-11-13 14:45:55,704 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 14:45:55,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:45:55,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:45:55,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:45:55,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:45:55,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:45:55,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:45:55,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:45:55,720 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 14:45:55,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-11-13 14:45:55,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,736 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-11-13 14:45:55,738 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 14:45:55,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:45:55,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:45:55,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:45:55,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:45:55,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:45:55,754 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:45:55,754 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:45:55,756 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 14:45:55,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-11-13 14:45:55,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-11-13 14:45:55,774 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 14:45:55,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:45:55,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:45:55,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:45:55,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:45:55,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:45:55,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:45:55,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:45:55,792 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 14:45:55,798 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 14:45:55,802 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-13 14:45:55,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:55,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:55,808 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:55,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-11-13 14:45:55,810 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 14:45:55,810 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 14:45:55,810 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 14:45:55,811 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2024-11-13 14:45:55,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2024-11-13 14:45:55,833 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 14:45:55,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:55,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:45:55,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:45:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:55,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:45:55,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:45:56,002 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 14:45:56,031 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 14:45:56,033 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:56,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2024-11-13 14:45:56,186 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 40 states and 53 transitions. Complement of second has 16 states. [2024-11-13 14:45:56,188 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 14:45:56,192 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 14:45:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-11-13 14:45:56,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-11-13 14:45:56,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:45:56,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-11-13 14:45:56,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:45:56,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-11-13 14:45:56,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:45:56,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 53 transitions. [2024-11-13 14:45:56,207 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 14:45:56,212 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 23 states and 31 transitions. [2024-11-13 14:45:56,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-11-13 14:45:56,213 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-11-13 14:45:56,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-11-13 14:45:56,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 14:45:56,215 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-11-13 14:45:56,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-11-13 14:45:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-11-13 14:45:56,233 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 14:45:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-13 14:45:56,235 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-13 14:45:56,235 INFO L424 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-13 14:45:56,235 INFO L331 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-11-13 14:45:56,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-11-13 14:45:56,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 14:45:56,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 14:45:56,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 14:45:56,237 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:56,237 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:56,237 INFO L745 eck$LassoCheckResult]: Stem: 130#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 131#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 120#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 132#$Ultimate##0 ~n := #in~n; 126#L17 assume !(~n < 1); 127#L19 assume !(1 == ~n); 119#L22 call #t~ret4 := fibonacci(~n - 1);< 128#$Ultimate##0 ~n := #in~n; 123#L17 assume ~n < 1;#res := 0; 124#fibonacciFINAL assume true; 129#fibonacciEXIT >#31#return; 118#L22-1 [2024-11-13 14:45:56,237 INFO L747 eck$LassoCheckResult]: Loop: 118#L22-1 call #t~ret5 := fibonacci(~n - 2);< 122#$Ultimate##0 ~n := #in~n; 137#L17 assume !(~n < 1); 136#L19 assume !(1 == ~n); 121#L22 call #t~ret4 := fibonacci(~n - 1);< 122#$Ultimate##0 ~n := #in~n; 137#L17 assume ~n < 1;#res := 0; 134#fibonacciFINAL assume true; 135#fibonacciEXIT >#31#return; 118#L22-1 [2024-11-13 14:45:56,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:56,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2073663503, now seen corresponding path program 1 times [2024-11-13 14:45:56,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:56,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963150494] [2024-11-13 14:45:56,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:56,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:56,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 14:45:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:56,413 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 14:45:56,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:56,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963150494] [2024-11-13 14:45:56,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963150494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:56,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:56,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:45:56,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041867049] [2024-11-13 14:45:56,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:56,417 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 14:45:56,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1606275375, now seen corresponding path program 1 times [2024-11-13 14:45:56,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:56,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702874824] [2024-11-13 14:45:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:56,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:45:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:56,532 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 14:45:56,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:56,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702874824] [2024-11-13 14:45:56,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702874824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:56,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:56,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:45:56,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449329354] [2024-11-13 14:45:56,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:56,533 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-11-13 14:45:56,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:45:56,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:45:56,537 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 14:45:56,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:56,633 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-11-13 14:45:56,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-11-13 14:45:56,634 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 14:45:56,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-11-13 14:45:56,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-11-13 14:45:56,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-11-13 14:45:56,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-11-13 14:45:56,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 14:45:56,636 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-13 14:45:56,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-11-13 14:45:56,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-13 14:45:56,639 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 14:45:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-13 14:45:56,640 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-13 14:45:56,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:45:56,641 INFO L424 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-13 14:45:56,641 INFO L331 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-11-13 14:45:56,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-11-13 14:45:56,642 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-11-13 14:45:56,643 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 14:45:56,643 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 14:45:56,644 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:56,644 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-11-13 14:45:56,644 INFO L745 eck$LassoCheckResult]: Stem: 202#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 203#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 191#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 201#$Ultimate##0 ~n := #in~n; 196#L17 assume !(~n < 1); 197#L19 assume !(1 == ~n); 192#L22 call #t~ret4 := fibonacci(~n - 1);< 198#$Ultimate##0 ~n := #in~n; 194#L17 assume !(~n < 1); 195#L19 assume 1 == ~n;#res := 1; 205#fibonacciFINAL assume true; 208#fibonacciEXIT >#31#return; 189#L22-1 [2024-11-13 14:45:56,644 INFO L747 eck$LassoCheckResult]: Loop: 189#L22-1 call #t~ret5 := fibonacci(~n - 2);< 193#$Ultimate##0 ~n := #in~n; 211#L17 assume !(~n < 1); 209#L19 assume !(1 == ~n); 190#L22 call #t~ret4 := fibonacci(~n - 1);< 193#$Ultimate##0 ~n := #in~n; 211#L17 assume !(~n < 1); 209#L19 assume !(1 == ~n); 190#L22 call #t~ret4 := fibonacci(~n - 1);< 193#$Ultimate##0 ~n := #in~n; 211#L17 assume !(~n < 1); 209#L19 assume 1 == ~n;#res := 1; 210#fibonacciFINAL assume true; 207#fibonacciEXIT >#31#return; 189#L22-1 call #t~ret5 := fibonacci(~n - 2);< 193#$Ultimate##0 ~n := #in~n; 211#L17 assume ~n < 1;#res := 0; 212#fibonacciFINAL assume true; 199#fibonacciEXIT >#33#return; 200#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 204#fibonacciFINAL assume true; 206#fibonacciEXIT >#31#return; 189#L22-1 [2024-11-13 14:45:56,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:56,645 INFO L85 PathProgramCache]: Analyzing trace with hash -140916419, now seen corresponding path program 1 times [2024-11-13 14:45:56,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:56,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252198839] [2024-11-13 14:45:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:56,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:56,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-13 14:45:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:56,801 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 14:45:56,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252198839] [2024-11-13 14:45:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252198839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:45:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872173224] [2024-11-13 14:45:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:56,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:45:56,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:56,804 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:45:56,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:45:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:56,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:45:56,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:45:56,908 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 14:45:56,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:45:57,090 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 14:45:57,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872173224] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:45:57,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:45:57,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-13 14:45:57,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780664137] [2024-11-13 14:45:57,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:45:57,091 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 14:45:57,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:57,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1749360471, now seen corresponding path program 1 times [2024-11-13 14:45:57,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:57,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661434150] [2024-11-13 14:45:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:57,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:57,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:45:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:57,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:45:57,472 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:45:57,472 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:45:57,472 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:45:57,472 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:45:57,472 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 14:45:57,472 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:57,472 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:45:57,472 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:45:57,472 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration3_Loop [2024-11-13 14:45:57,472 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:45:57,472 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:45:57,473 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,477 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,491 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,493 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,497 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,556 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:45:57,556 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 14:45:57,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:57,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:57,560 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:57,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-11-13 14:45:57,564 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:45:57,564 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:57,587 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 14:45:57,587 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#in~n=3} Honda state: {fibonacci_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 14:45:57,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-11-13 14:45:57,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:57,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:57,610 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:57,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-11-13 14:45:57,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:45:57,613 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:57,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-11-13 14:45:57,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:57,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:57,642 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:57,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-11-13 14:45:57,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 14:45:57,645 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:57,661 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 14:45:57,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-11-13 14:45:57,673 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:45:57,674 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:45:57,674 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:45:57,674 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:45:57,674 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 14:45:57,674 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:57,674 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:45:57,674 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:45:57,674 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration3_Loop [2024-11-13 14:45:57,674 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:45:57,674 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:45:57,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,691 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,700 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,703 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:57,765 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:45:57,765 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 14:45:57,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:57,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:57,769 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:57,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-11-13 14:45:57,772 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 14:45:57,789 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:45:57,789 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:45:57,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:45:57,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:45:57,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:45:57,790 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:45:57,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:45:57,794 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 14:45:57,798 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 14:45:57,798 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-13 14:45:57,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:57,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:57,801 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:57,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-11-13 14:45:57,803 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 14:45:57,804 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 14:45:57,804 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 14:45:57,804 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2024-11-13 14:45:57,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2024-11-13 14:45:57,824 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 14:45:57,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:57,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-11-13 14:45:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:57,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:45:57,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:45:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:58,052 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:45:58,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:45:58,244 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 14:45:58,245 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 14:45:58,245 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:45:58,609 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Result 152 states and 210 transitions. Complement of second has 54 states. [2024-11-13 14:45:58,611 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 14:45:58,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:45:58,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 40 transitions. [2024-11-13 14:45:58,613 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 40 transitions. Stem has 12 letters. Loop has 22 letters. [2024-11-13 14:45:58,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:45:58,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 40 transitions. Stem has 34 letters. Loop has 22 letters. [2024-11-13 14:45:58,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:45:58,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 40 transitions. Stem has 12 letters. Loop has 44 letters. [2024-11-13 14:45:58,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:45:58,616 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152 states and 210 transitions. [2024-11-13 14:45:58,629 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2024-11-13 14:45:58,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152 states to 125 states and 179 transitions. [2024-11-13 14:45:58,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2024-11-13 14:45:58,640 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2024-11-13 14:45:58,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 179 transitions. [2024-11-13 14:45:58,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 14:45:58,641 INFO L218 hiAutomatonCegarLoop]: Abstraction has 125 states and 179 transitions. [2024-11-13 14:45:58,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states and 179 transitions. [2024-11-13 14:45:58,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2024-11-13 14:45:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 70 states have internal predecessors, (81), 25 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (35), 22 states have call predecessors, (35), 23 states have call successors, (35) [2024-11-13 14:45:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 142 transitions. [2024-11-13 14:45:58,656 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 142 transitions. [2024-11-13 14:45:58,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:45:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:45:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:45:58,657 INFO L87 Difference]: Start difference. First operand 106 states and 142 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:45:58,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:58,845 INFO L93 Difference]: Finished difference Result 135 states and 183 transitions. [2024-11-13 14:45:58,845 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2024-11-13 14:45:58,849 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2024-11-13 14:45:58,852 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 130 states and 178 transitions. [2024-11-13 14:45:58,853 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 81 [2024-11-13 14:45:58,853 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 81 [2024-11-13 14:45:58,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 130 states and 178 transitions. [2024-11-13 14:45:58,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 14:45:58,853 INFO L218 hiAutomatonCegarLoop]: Abstraction has 130 states and 178 transitions. [2024-11-13 14:45:58,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states and 178 transitions. [2024-11-13 14:45:58,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 118. [2024-11-13 14:45:58,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 78 states have internal predecessors, (89), 28 states have call successors, (29), 15 states have call predecessors, (29), 16 states have return successors, (39), 24 states have call predecessors, (39), 26 states have call successors, (39) [2024-11-13 14:45:58,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 157 transitions. [2024-11-13 14:45:58,867 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 157 transitions. [2024-11-13 14:45:58,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:45:58,868 INFO L424 stractBuchiCegarLoop]: Abstraction has 118 states and 157 transitions. [2024-11-13 14:45:58,868 INFO L331 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-11-13 14:45:58,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 157 transitions. [2024-11-13 14:45:58,871 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2024-11-13 14:45:58,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 14:45:58,871 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 14:45:58,875 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:58,875 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:58,875 INFO L745 eck$LassoCheckResult]: Stem: 905#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 906#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 880#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 907#$Ultimate##0 ~n := #in~n; 887#L17 assume !(~n < 1); 888#L19 assume !(1 == ~n); 891#L22 call #t~ret4 := fibonacci(~n - 1);< 892#$Ultimate##0 ~n := #in~n; 949#L17 assume !(~n < 1); 948#L19 assume !(1 == ~n); 937#L22 call #t~ret4 := fibonacci(~n - 1);< 942#$Ultimate##0 ~n := #in~n; 946#L17 assume !(~n < 1); 944#L19 assume !(1 == ~n); 938#L22 call #t~ret4 := fibonacci(~n - 1);< 942#$Ultimate##0 ~n := #in~n; 946#L17 assume !(~n < 1); 944#L19 assume !(1 == ~n); 938#L22 call #t~ret4 := fibonacci(~n - 1);< 942#$Ultimate##0 ~n := #in~n; 947#L17 assume !(~n < 1); 945#L19 assume 1 == ~n;#res := 1; 943#fibonacciFINAL assume true; 941#fibonacciEXIT >#31#return; 883#L22-1 call #t~ret5 := fibonacci(~n - 2);< 940#$Ultimate##0 ~n := #in~n; 885#L17 assume ~n < 1;#res := 0; 886#fibonacciFINAL assume true; 992#fibonacciEXIT >#33#return; 990#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 987#fibonacciFINAL assume true; 980#fibonacciEXIT >#31#return; 913#L22-1 [2024-11-13 14:45:58,875 INFO L747 eck$LassoCheckResult]: Loop: 913#L22-1 call #t~ret5 := fibonacci(~n - 2);< 890#$Ultimate##0 ~n := #in~n; 986#L17 assume !(~n < 1); 911#L19 assume !(1 == ~n); 914#L22 call #t~ret4 := fibonacci(~n - 1);< 890#$Ultimate##0 ~n := #in~n; 986#L17 assume !(~n < 1); 911#L19 assume 1 == ~n;#res := 1; 915#fibonacciFINAL assume true; 916#fibonacciEXIT >#31#return; 913#L22-1 [2024-11-13 14:45:58,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash 3324437, now seen corresponding path program 1 times [2024-11-13 14:45:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:58,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077710153] [2024-11-13 14:45:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:58,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:59,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:45:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:59,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-13 14:45:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:59,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-13 14:45:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:59,192 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 14:45:59,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:45:59,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077710153] [2024-11-13 14:45:59,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077710153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:45:59,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647058305] [2024-11-13 14:45:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:59,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:45:59,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:59,195 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:45:59,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:45:59,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:59,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:45:59,252 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:45:59,365 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 14:45:59,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:45:59,731 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 14:45:59,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647058305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:45:59,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:45:59,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2024-11-13 14:45:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682057083] [2024-11-13 14:45:59,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:45:59,732 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 14:45:59,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:59,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1745046499, now seen corresponding path program 1 times [2024-11-13 14:45:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:45:59,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135534574] [2024-11-13 14:45:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:59,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:45:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:59,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:45:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:45:59,742 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:45:59,857 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:45:59,857 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:45:59,857 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:45:59,857 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:45:59,857 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 14:45:59,857 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:59,857 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:45:59,857 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:45:59,857 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration4_Loop [2024-11-13 14:45:59,857 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:45:59,857 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:45:59,858 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:59,862 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:59,867 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:59,870 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:59,872 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:45:59,913 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:45:59,913 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 14:45:59,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:59,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:59,915 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:59,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-11-13 14:45:59,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:45:59,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:59,940 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 14:45:59,940 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#in~n=2} Honda state: {fibonacci_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 14:45:59,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-11-13 14:45:59,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:59,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:59,960 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:59,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:45:59,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:45:59,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-11-13 14:45:59,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2024-11-13 14:45:59,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:45:59,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:00,000 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:00,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-11-13 14:46:00,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 14:46:00,003 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:46:00,025 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 14:46:00,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-11-13 14:46:00,044 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:46:00,044 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:46:00,044 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:46:00,045 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:46:00,045 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 14:46:00,045 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:00,045 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:46:00,045 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:46:00,045 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration4_Loop [2024-11-13 14:46:00,045 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:46:00,045 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:46:00,046 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:00,050 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:00,056 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:00,061 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:00,063 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:00,111 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:46:00,111 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 14:46:00,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:00,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:00,113 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:00,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-11-13 14:46:00,116 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 14:46:00,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:46:00,130 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:46:00,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:46:00,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:46:00,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:46:00,132 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:46:00,132 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:46:00,138 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 14:46:00,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-11-13 14:46:00,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:00,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:00,158 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:00,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-11-13 14:46:00,161 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 14:46:00,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:46:00,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:46:00,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:46:00,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:46:00,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:46:00,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:46:00,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:46:00,179 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 14:46:00,182 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 14:46:00,182 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-13 14:46:00,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:00,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:00,186 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:00,188 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 14:46:00,188 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 14:46:00,188 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 14:46:00,189 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2024-11-13 14:46:00,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-11-13 14:46:00,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-11-13 14:46:00,207 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 14:46:00,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:00,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:46:00,270 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:00,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 14:46:00,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:00,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-11-13 14:46:00,653 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 14:46:00,654 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 14:46:00,654 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 14:46:00,916 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 230 states and 321 transitions. Complement of second has 37 states. [2024-11-13 14:46:00,917 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 14:46:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 14:46:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-11-13 14:46:00,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-13 14:46:00,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:00,919 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 14:46:00,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:00,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:46:00,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:01,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 14:46:01,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:01,335 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 14:46:01,335 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-13 14:46:01,337 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 14:46:01,578 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 300 states and 408 transitions. Complement of second has 29 states. [2024-11-13 14:46:01,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2024-11-13 14:46:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 14:46:01,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 24 transitions. [2024-11-13 14:46:01,581 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-13 14:46:01,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:01,581 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 14:46:01,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:01,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:46:01,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:01,909 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 14:46:01,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:02,027 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 14:46:02,027 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-11-13 14:46:02,028 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 14:46:02,341 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 157 transitions. cyclomatic complexity: 44. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 808 states and 1112 transitions. Complement of second has 135 states. [2024-11-13 14:46:02,342 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 14:46:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 14:46:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2024-11-13 14:46:02,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 10 letters. [2024-11-13 14:46:02,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:02,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 42 letters. Loop has 10 letters. [2024-11-13 14:46:02,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:02,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 32 letters. Loop has 20 letters. [2024-11-13 14:46:02,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:02,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 808 states and 1112 transitions. [2024-11-13 14:46:02,368 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2024-11-13 14:46:02,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 808 states to 427 states and 634 transitions. [2024-11-13 14:46:02,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 166 [2024-11-13 14:46:02,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 186 [2024-11-13 14:46:02,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 427 states and 634 transitions. [2024-11-13 14:46:02,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 14:46:02,394 INFO L218 hiAutomatonCegarLoop]: Abstraction has 427 states and 634 transitions. [2024-11-13 14:46:02,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states and 634 transitions. [2024-11-13 14:46:02,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 352. [2024-11-13 14:46:02,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (130), 70 states have call predecessors, (130), 71 states have call successors, (130) [2024-11-13 14:46:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 479 transitions. [2024-11-13 14:46:02,455 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 479 transitions. [2024-11-13 14:46:02,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:02,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:46:02,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:46:02,456 INFO L87 Difference]: Start difference. First operand 352 states and 479 transitions. Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 14:46:02,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:02,966 INFO L93 Difference]: Finished difference Result 707 states and 1054 transitions. [2024-11-13 14:46:02,966 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 707 states and 1054 transitions. [2024-11-13 14:46:02,980 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-13 14:46:02,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 707 states to 676 states and 1009 transitions. [2024-11-13 14:46:02,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 296 [2024-11-13 14:46:02,995 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 299 [2024-11-13 14:46:02,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 676 states and 1009 transitions. [2024-11-13 14:46:02,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 14:46:02,996 INFO L218 hiAutomatonCegarLoop]: Abstraction has 676 states and 1009 transitions. [2024-11-13 14:46:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states and 1009 transitions. [2024-11-13 14:46:03,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 628. [2024-11-13 14:46:03,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 383 states have (on average 1.1618798955613576) internal successors, (445), 406 states have internal predecessors, (445), 151 states have call successors, (165), 76 states have call predecessors, (165), 94 states have return successors, (326), 145 states have call predecessors, (326), 141 states have call successors, (326) [2024-11-13 14:46:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 936 transitions. [2024-11-13 14:46:03,060 INFO L240 hiAutomatonCegarLoop]: Abstraction has 628 states and 936 transitions. [2024-11-13 14:46:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:46:03,064 INFO L424 stractBuchiCegarLoop]: Abstraction has 628 states and 936 transitions. [2024-11-13 14:46:03,064 INFO L331 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-11-13 14:46:03,065 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 628 states and 936 transitions. [2024-11-13 14:46:03,071 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-13 14:46:03,072 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 14:46:03,072 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 14:46:03,074 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:03,074 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-13 14:46:03,075 INFO L745 eck$LassoCheckResult]: Stem: 4310#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 4311#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 4312#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 4313#$Ultimate##0 ~n := #in~n; 4329#L17 assume !(~n < 1); 4398#L19 assume !(1 == ~n); 4394#L22 call #t~ret4 := fibonacci(~n - 1);< 4395#$Ultimate##0 ~n := #in~n; 4427#L17 assume !(~n < 1); 4414#L19 assume !(1 == ~n); 4407#L22 call #t~ret4 := fibonacci(~n - 1);< 4410#$Ultimate##0 ~n := #in~n; 4421#L17 assume !(~n < 1); 4412#L19 assume !(1 == ~n); 4402#L22 call #t~ret4 := fibonacci(~n - 1);< 4408#$Ultimate##0 ~n := #in~n; 4431#L17 assume !(~n < 1); 4430#L19 assume !(1 == ~n); 4424#L22 call #t~ret4 := fibonacci(~n - 1);< 4429#$Ultimate##0 ~n := #in~n; 4448#L17 assume !(~n < 1); 4447#L19 assume !(1 == ~n); 4416#L22 call #t~ret4 := fibonacci(~n - 1);< 4446#$Ultimate##0 ~n := #in~n; 4461#L17 assume !(~n < 1); 4460#L19 assume !(1 == ~n); 4344#L22 call #t~ret4 := fibonacci(~n - 1);< 4342#$Ultimate##0 ~n := #in~n; 4345#L17 assume !(~n < 1); 4464#L19 assume !(1 == ~n); 4343#L22 call #t~ret4 := fibonacci(~n - 1);< 4342#$Ultimate##0 ~n := #in~n; 4346#L17 assume !(~n < 1); 4536#L19 assume 1 == ~n;#res := 1; 4535#fibonacciFINAL assume true; 4530#fibonacciEXIT >#31#return; 4514#L22-1 call #t~ret5 := fibonacci(~n - 2);< 4528#$Ultimate##0 ~n := #in~n; 4777#L17 assume !(~n < 1); 4655#L19 assume !(1 == ~n); 4656#L22 call #t~ret4 := fibonacci(~n - 1);< 4707#$Ultimate##0 ~n := #in~n; 4821#L17 assume !(~n < 1); 4818#L19 assume !(1 == ~n); 4819#L22 call #t~ret4 := fibonacci(~n - 1);< 4828#$Ultimate##0 [2024-11-13 14:46:03,075 INFO L747 eck$LassoCheckResult]: Loop: 4828#$Ultimate##0 ~n := #in~n; 4850#L17 assume !(~n < 1); 4847#L19 assume !(1 == ~n); 4827#L22 call #t~ret4 := fibonacci(~n - 1);< 4828#$Ultimate##0 [2024-11-13 14:46:03,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:03,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1729544275, now seen corresponding path program 1 times [2024-11-13 14:46:03,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:03,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627862372] [2024-11-13 14:46:03,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:03,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:03,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 14:46:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:46:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627862372] [2024-11-13 14:46:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627862372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:46:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427030036] [2024-11-13 14:46:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:03,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:46:03,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:03,482 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:46:03,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:46:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:03,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:46:03,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:46:03,643 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:46:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:46:03,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427030036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:46:03,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:46:03,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 21 [2024-11-13 14:46:03,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385629094] [2024-11-13 14:46:03,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:46:03,950 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 14:46:03,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash 927643, now seen corresponding path program 2 times [2024-11-13 14:46:03,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:03,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354444191] [2024-11-13 14:46:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:46:03,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:46:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:46:03,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:46:04,018 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:46:04,018 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:46:04,018 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:46:04,018 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:46:04,018 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 14:46:04,018 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,018 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:46:04,018 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:46:04,019 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration5_Loop [2024-11-13 14:46:04,019 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:46:04,019 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:46:04,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,025 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,028 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,038 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,080 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:46:04,080 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 14:46:04,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:04,083 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:04,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-11-13 14:46:04,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:46:04,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:46:04,108 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 14:46:04,108 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 14:46:04,126 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-11-13 14:46:04,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:04,130 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:04,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-11-13 14:46:04,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:46:04,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:46:04,152 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 14:46:04,152 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 14:46:04,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-11-13 14:46:04,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:04,174 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:04,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-11-13 14:46:04,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:46:04,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:46:04,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-11-13 14:46:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:04,216 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:04,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-11-13 14:46:04,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 14:46:04,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:46:04,269 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 14:46:04,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-11-13 14:46:04,274 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:46:04,274 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:46:04,274 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:46:04,274 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:46:04,275 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 14:46:04,275 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,275 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:46:04,275 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:46:04,275 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration5_Loop [2024-11-13 14:46:04,275 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:46:04,276 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:46:04,276 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,281 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,284 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,296 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,299 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:04,336 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:46:04,337 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 14:46:04,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:04,341 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:04,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-11-13 14:46:04,344 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 14:46:04,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:46:04,360 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:46:04,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:46:04,360 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:46:04,360 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:46:04,361 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:46:04,361 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:46:04,362 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 14:46:04,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-11-13 14:46:04,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:04,385 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:04,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-11-13 14:46:04,389 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 14:46:04,400 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:46:04,401 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:46:04,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:46:04,401 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:46:04,401 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:46:04,401 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:46:04,401 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:46:04,402 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 14:46:04,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2024-11-13 14:46:04,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:04,416 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:04,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-11-13 14:46:04,418 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 14:46:04,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:46:04,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:46:04,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:46:04,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:46:04,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:46:04,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:46:04,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:46:04,433 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 14:46:04,436 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-11-13 14:46:04,436 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-11-13 14:46:04,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:04,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:04,438 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:04,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-11-13 14:46:04,439 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 14:46:04,439 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 14:46:04,439 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 14:46:04,440 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2024-11-13 14:46:04,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2024-11-13 14:46:04,454 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 14:46:04,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:04,546 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:46:04,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:04,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:46:04,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:04,732 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 14:46:04,733 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-11-13 14:46:04,733 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:04,822 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 650 states and 958 transitions. Complement of second has 15 states. [2024-11-13 14:46:04,823 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 14:46:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-13 14:46:04,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2024-11-13 14:46:04,824 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:04,824 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 14:46:04,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:04,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:46:04,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:05,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:46:05,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:46:05,119 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 14:46:05,120 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:05,206 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 650 states and 958 transitions. Complement of second has 15 states. [2024-11-13 14:46:05,207 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 14:46:05,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-11-13 14:46:05,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2024-11-13 14:46:05,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:05,208 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 14:46:05,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:05,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:46:05,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:05,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2024-11-13 14:46:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:05,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:46:05,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:05,487 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 14:46:05,488 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 14:46:05,488 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:05,597 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 628 states and 936 transitions. cyclomatic complexity: 318. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 839 states and 1163 transitions. Complement of second has 19 states. [2024-11-13 14:46:05,598 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 14:46:05,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2024-11-13 14:46:05,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2024-11-13 14:46:05,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:05,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2024-11-13 14:46:05,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:05,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2024-11-13 14:46:05,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:05,601 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 839 states and 1163 transitions. [2024-11-13 14:46:05,614 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-13 14:46:05,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 839 states to 684 states and 996 transitions. [2024-11-13 14:46:05,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 241 [2024-11-13 14:46:05,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 250 [2024-11-13 14:46:05,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 684 states and 996 transitions. [2024-11-13 14:46:05,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 14:46:05,629 INFO L218 hiAutomatonCegarLoop]: Abstraction has 684 states and 996 transitions. [2024-11-13 14:46:05,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states and 996 transitions. [2024-11-13 14:46:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 654. [2024-11-13 14:46:05,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 407 states have (on average 1.1523341523341524) internal successors, (469), 432 states have internal predecessors, (469), 151 states have call successors, (165), 76 states have call predecessors, (165), 96 states have return successors, (326), 145 states have call predecessors, (326), 141 states have call successors, (326) [2024-11-13 14:46:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 960 transitions. [2024-11-13 14:46:05,663 INFO L240 hiAutomatonCegarLoop]: Abstraction has 654 states and 960 transitions. [2024-11-13 14:46:05,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:05,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:46:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:46:05,664 INFO L87 Difference]: Start difference. First operand 654 states and 960 transitions. Second operand has 21 states, 20 states have (on average 1.8) internal successors, (36), 14 states have internal predecessors, (36), 9 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:06,080 INFO L93 Difference]: Finished difference Result 781 states and 1180 transitions. [2024-11-13 14:46:06,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 781 states and 1180 transitions. [2024-11-13 14:46:06,092 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-13 14:46:06,104 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 781 states to 760 states and 1148 transitions. [2024-11-13 14:46:06,104 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 279 [2024-11-13 14:46:06,104 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 282 [2024-11-13 14:46:06,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 760 states and 1148 transitions. [2024-11-13 14:46:06,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 14:46:06,105 INFO L218 hiAutomatonCegarLoop]: Abstraction has 760 states and 1148 transitions. [2024-11-13 14:46:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states and 1148 transitions. [2024-11-13 14:46:06,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 702. [2024-11-13 14:46:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 437 states have (on average 1.1464530892448512) internal successors, (501), 462 states have internal predecessors, (501), 169 states have call successors, (185), 86 states have call predecessors, (185), 96 states have return successors, (336), 153 states have call predecessors, (336), 159 states have call successors, (336) [2024-11-13 14:46:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1022 transitions. [2024-11-13 14:46:06,140 INFO L240 hiAutomatonCegarLoop]: Abstraction has 702 states and 1022 transitions. [2024-11-13 14:46:06,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:46:06,143 INFO L424 stractBuchiCegarLoop]: Abstraction has 702 states and 1022 transitions. [2024-11-13 14:46:06,143 INFO L331 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-11-13 14:46:06,143 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 702 states and 1022 transitions. [2024-11-13 14:46:06,150 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-13 14:46:06,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-13 14:46:06,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-13 14:46:06,151 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 12, 11, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:46:06,151 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-11-13 14:46:06,151 INFO L745 eck$LassoCheckResult]: Stem: 9342#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 9343#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 9344#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 9345#$Ultimate##0 ~n := #in~n; 9513#L17 assume !(~n < 1); 9512#L19 assume !(1 == ~n); 9490#L22 call #t~ret4 := fibonacci(~n - 1);< 9491#$Ultimate##0 ~n := #in~n; 9555#L17 assume !(~n < 1); 9553#L19 assume !(1 == ~n); 9545#L22 call #t~ret4 := fibonacci(~n - 1);< 9551#$Ultimate##0 ~n := #in~n; 9550#L17 assume !(~n < 1); 9547#L19 assume !(1 == ~n); 9509#L22 call #t~ret4 := fibonacci(~n - 1);< 9546#$Ultimate##0 ~n := #in~n; 9661#L17 assume !(~n < 1); 9657#L19 assume !(1 == ~n); 9653#L22 call #t~ret4 := fibonacci(~n - 1);< 9655#$Ultimate##0 ~n := #in~n; 9680#L17 assume !(~n < 1); 9679#L19 assume !(1 == ~n); 9319#L22 call #t~ret4 := fibonacci(~n - 1);< 9678#$Ultimate##0 ~n := #in~n; 9723#L17 assume !(~n < 1); 9721#L19 assume !(1 == ~n); 9674#L22 call #t~ret4 := fibonacci(~n - 1);< 9698#$Ultimate##0 ~n := #in~n; 9792#L17 assume !(~n < 1); 9777#L19 assume !(1 == ~n); 9694#L22 call #t~ret4 := fibonacci(~n - 1);< 9761#$Ultimate##0 ~n := #in~n; 9819#L17 assume !(~n < 1); 9815#L19 assume !(1 == ~n); 9693#L22 call #t~ret4 := fibonacci(~n - 1);< 9761#$Ultimate##0 ~n := #in~n; 9822#L17 assume !(~n < 1); 9820#L19 assume 1 == ~n;#res := 1; 9816#fibonacciFINAL assume true; 9808#fibonacciEXIT >#31#return; 9715#L22-1 call #t~ret5 := fibonacci(~n - 2);< 9726#$Ultimate##0 ~n := #in~n; 9846#L17 assume !(~n < 1); 9909#L19 assume !(1 == ~n); 9368#L22 call #t~ret4 := fibonacci(~n - 1);< 9374#$Ultimate##0 ~n := #in~n; 9375#L17 assume !(~n < 1); 9973#L19 assume !(1 == ~n); 9354#L22 call #t~ret4 := fibonacci(~n - 1);< 9376#$Ultimate##0 ~n := #in~n; 9377#L17 assume !(~n < 1); 9972#L19 assume !(1 == ~n); 9355#L22 [2024-11-13 14:46:06,151 INFO L747 eck$LassoCheckResult]: Loop: 9355#L22 call #t~ret4 := fibonacci(~n - 1);< 9376#$Ultimate##0 ~n := #in~n; 9377#L17 assume !(~n < 1); 9972#L19 assume !(1 == ~n); 9355#L22 [2024-11-13 14:46:06,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:06,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1537328375, now seen corresponding path program 2 times [2024-11-13 14:46:06,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:06,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784268531] [2024-11-13 14:46:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:06,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:06,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 14:46:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:06,556 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 213 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:46:06,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:46:06,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784268531] [2024-11-13 14:46:06,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784268531] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:46:06,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895789274] [2024-11-13 14:46:06,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:46:06,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:46:06,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:06,561 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:46:06,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 14:46:06,617 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:46:06,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:46:06,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:46:06,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 213 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:46:06,699 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:46:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 213 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:46:06,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895789274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:46:06,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:46:06,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 21 [2024-11-13 14:46:06,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844477648] [2024-11-13 14:46:06,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:46:06,970 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-11-13 14:46:06,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1817383, now seen corresponding path program 3 times [2024-11-13 14:46:06,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:46:06,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968325602] [2024-11-13 14:46:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:46:06,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:46:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:46:06,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:46:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:46:06,977 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:46:07,052 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:46:07,053 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:46:07,053 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:46:07,053 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:46:07,053 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-11-13 14:46:07,053 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:07,053 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:46:07,053 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:46:07,053 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration6_Loop [2024-11-13 14:46:07,053 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:46:07,053 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:46:07,054 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:07,057 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:07,059 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:07,075 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:07,134 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:46:07,135 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-11-13 14:46:07,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:07,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:07,139 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:07,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-11-13 14:46:07,142 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:46:07,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:46:07,158 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 14:46:07,158 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 14:46:07,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-11-13 14:46:07,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:07,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:07,180 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:07,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2024-11-13 14:46:07,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:46:07,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:46:07,201 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-11-13 14:46:07,202 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-11-13 14:46:07,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2024-11-13 14:46:07,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:07,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:07,224 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:07,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-11-13 14:46:07,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-11-13 14:46:07,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:46:07,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-11-13 14:46:07,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:07,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:07,280 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:07,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-11-13 14:46:07,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-11-13 14:46:07,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-11-13 14:46:09,436 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-11-13 14:46:09,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2024-11-13 14:46:09,441 INFO L204 LassoAnalysis]: Preferences: [2024-11-13 14:46:09,441 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-11-13 14:46:09,441 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-11-13 14:46:09,441 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-11-13 14:46:09,441 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-11-13 14:46:09,441 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:09,441 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-11-13 14:46:09,441 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-11-13 14:46:09,441 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration6_Loop [2024-11-13 14:46:09,442 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-11-13 14:46:09,442 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-11-13 14:46:09,442 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:09,445 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:09,448 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:09,460 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-11-13 14:46:09,515 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-11-13 14:46:09,516 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-11-13 14:46:09,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:09,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:09,519 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:09,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-11-13 14:46:09,521 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-11-13 14:46:09,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:46:09,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:46:09,537 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:46:09,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:46:09,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:46:09,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:46:09,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:46:09,543 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 14:46:09,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-11-13 14:46:09,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:09,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:09,564 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:09,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-11-13 14:46:09,579 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 14:46:09,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:46:09,593 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:46:09,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:46:09,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:46:09,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:46:09,595 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:46:09,595 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:46:09,597 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-11-13 14:46:09,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2024-11-13 14:46:09,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:09,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:09,620 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:09,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-11-13 14:46:09,622 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 14:46:09,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-11-13 14:46:09,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-11-13 14:46:09,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-11-13 14:46:09,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-11-13 14:46:09,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-11-13 14:46:09,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-11-13 14:46:09,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-11-13 14:46:09,638 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-11-13 14:46:09,640 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-11-13 14:46:09,640 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-11-13 14:46:09,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-13 14:46:09,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:46:09,642 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-13 14:46:09,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-11-13 14:46:09,644 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-11-13 14:46:09,645 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-11-13 14:46:09,645 INFO L474 LassoAnalysis]: Proved termination. [2024-11-13 14:46:09,645 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2024-11-13 14:46:09,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2024-11-13 14:46:09,667 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-11-13 14:46:09,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:09,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:46:09,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:09,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:46:09,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:09,972 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 14:46:09,972 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2024-11-13 14:46:09,973 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 702 states and 1022 transitions. cyclomatic complexity: 330 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:10,060 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 702 states and 1022 transitions. cyclomatic complexity: 330. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 724 states and 1045 transitions. Complement of second has 18 states. [2024-11-13 14:46:10,061 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 14:46:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:10,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 11 transitions. [2024-11-13 14:46:10,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 11 transitions. Stem has 52 letters. Loop has 4 letters. [2024-11-13 14:46:10,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:10,062 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-11-13 14:46:10,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:46:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:10,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:46:10,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:46:10,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:46:10,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:46:10,369 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 14:46:10,370 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2024-11-13 14:46:10,370 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 702 states and 1022 transitions. cyclomatic complexity: 330 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:10,503 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 702 states and 1022 transitions. cyclomatic complexity: 330. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 944 states and 1356 transitions. Complement of second has 22 states. [2024-11-13 14:46:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2024-11-13 14:46:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 15 transitions. [2024-11-13 14:46:10,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 52 letters. Loop has 4 letters. [2024-11-13 14:46:10,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:10,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 56 letters. Loop has 4 letters. [2024-11-13 14:46:10,506 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:10,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 15 transitions. Stem has 52 letters. Loop has 8 letters. [2024-11-13 14:46:10,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-11-13 14:46:10,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 944 states and 1356 transitions. [2024-11-13 14:46:10,521 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2024-11-13 14:46:10,539 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 944 states to 874 states and 1278 transitions. [2024-11-13 14:46:10,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 282 [2024-11-13 14:46:10,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 310 [2024-11-13 14:46:10,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 874 states and 1278 transitions. [2024-11-13 14:46:10,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-11-13 14:46:10,541 INFO L218 hiAutomatonCegarLoop]: Abstraction has 874 states and 1278 transitions. [2024-11-13 14:46:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states and 1278 transitions. [2024-11-13 14:46:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 854. [2024-11-13 14:46:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 537 states have (on average 1.1340782122905029) internal successors, (609), 569 states have internal predecessors, (609), 202 states have call successors, (236), 111 states have call predecessors, (236), 115 states have return successors, (409), 173 states have call predecessors, (409), 192 states have call successors, (409) [2024-11-13 14:46:10,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1254 transitions. [2024-11-13 14:46:10,604 INFO L240 hiAutomatonCegarLoop]: Abstraction has 854 states and 1254 transitions. [2024-11-13 14:46:10,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:46:10,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:46:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:46:10,605 INFO L87 Difference]: Start difference. First operand 854 states and 1254 transitions. Second operand has 21 states, 20 states have (on average 1.75) internal successors, (35), 12 states have internal predecessors, (35), 10 states have call successors, (11), 11 states have call predecessors, (11), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:46:10,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2024-11-13 14:46:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:46:11,045 INFO L93 Difference]: Finished difference Result 471 states and 558 transitions. [2024-11-13 14:46:11,046 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 471 states and 558 transitions. [2024-11-13 14:46:11,051 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-13 14:46:11,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 471 states to 0 states and 0 transitions. [2024-11-13 14:46:11,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-11-13 14:46:11,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-11-13 14:46:11,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-11-13 14:46:11,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-11-13 14:46:11,052 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 14:46:11,052 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 14:46:11,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:46:11,053 INFO L424 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 14:46:11,053 INFO L331 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-11-13 14:46:11,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-11-13 14:46:11,053 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-11-13 14:46:11,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-11-13 14:46:11,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.11 02:46:11 BoogieIcfgContainer [2024-11-13 14:46:11,067 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-13 14:46:11,068 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:46:11,068 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:46:11,069 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:46:11,070 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:54" (3/4) ... [2024-11-13 14:46:11,072 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 14:46:11,073 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:46:11,074 INFO L158 Benchmark]: Toolchain (without parser) took 17006.76ms. Allocated memory is still 142.6MB. Free memory was 119.6MB in the beginning and 84.9MB in the end (delta: 34.7MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2024-11-13 14:46:11,075 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:46:11,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.69ms. Allocated memory is still 142.6MB. Free memory was 119.3MB in the beginning and 109.3MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:46:11,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.26ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 108.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:46:11,076 INFO L158 Benchmark]: Boogie Preprocessor took 36.87ms. Allocated memory is still 142.6MB. Free memory was 108.2MB in the beginning and 107.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:46:11,077 INFO L158 Benchmark]: RCFGBuilder took 293.85ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 97.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:46:11,077 INFO L158 Benchmark]: BuchiAutomizer took 16366.11ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 84.9MB in the end (delta: 12.2MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2024-11-13 14:46:11,078 INFO L158 Benchmark]: Witness Printer took 4.95ms. Allocated memory is still 142.6MB. Free memory was 84.9MB in the beginning and 84.9MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:46:11,083 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 142.6MB. Free memory is still 80.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.69ms. Allocated memory is still 142.6MB. Free memory was 119.3MB in the beginning and 109.3MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.26ms. Allocated memory is still 142.6MB. Free memory was 109.3MB in the beginning and 108.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.87ms. Allocated memory is still 142.6MB. Free memory was 108.2MB in the beginning and 107.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 293.85ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 97.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 16366.11ms. Allocated memory is still 142.6MB. Free memory was 97.1MB in the beginning and 84.9MB in the end (delta: 12.2MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Witness Printer took 4.95ms. Allocated memory is still 142.6MB. Free memory was 84.9MB in the beginning and 84.9MB in the end (delta: 24.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 5 locations. One deterministic module has affine ranking function n and consists of 11 locations. One deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 6 locations. 5 modules have a trivial ranking function, the largest among these consists of 23 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.2s and 7 iterations. TraceHistogramMax:12. Analysis of lassos took 8.7s. Construction of modules took 1.5s. Büchi inclusion checks took 5.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 265 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/26 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 596 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 571 mSDsluCounter, 658 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 425 mSDsCounter, 357 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1357 IncrementalHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 357 mSolverCounterUnsat, 233 mSDtfsCounter, 1357 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf100 lsp82 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp80 dnf100 smp100 tf112 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-11-13 14:46:11,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-13 14:46:11,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 14:46:11,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 14:46:11,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 14:46:11,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c415f329-c201-41f6-a134-9337a255a36c/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