./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Fibonacci04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Fibonacci04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU --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 8d19306ce3d42a6a85ce0e73aaa2bade9eaab24620b40f9180d62be222dc7b30 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 21:58:01,648 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 21:58:01,744 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-31 21:58:01,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 21:58:01,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 21:58:01,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 21:58:01,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 21:58:01,800 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 21:58:01,801 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 21:58:01,802 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 21:58:01,803 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 21:58:01,804 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 21:58:01,804 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 21:58:01,805 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 21:58:01,807 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 21:58:01,808 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 21:58:01,808 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 21:58:01,808 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 21:58:01,809 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 21:58:01,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 21:58:01,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 21:58:01,812 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 21:58:01,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 21:58:01,814 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 21:58:01,815 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 21:58:01,816 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 21:58:01,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 21:58:01,817 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 21:58:01,817 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 21:58:01,818 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 21:58:01,818 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 21:58:01,819 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 21:58:01,820 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 21:58:01,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 21:58:01,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 21:58:01,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 21:58:01,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 21:58:01,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 21:58:01,822 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 21:58:01,823 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d19306ce3d42a6a85ce0e73aaa2bade9eaab24620b40f9180d62be222dc7b30 [2024-10-31 21:58:02,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 21:58:02,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 21:58:02,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 21:58:02,155 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 21:58:02,156 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 21:58:02,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/recursive/Fibonacci04.c Unable to find full path for "g++" [2024-10-31 21:58:04,585 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 21:58:04,822 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 21:58:04,823 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/sv-benchmarks/c/recursive/Fibonacci04.c [2024-10-31 21:58:04,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/data/f97e70e9e/2330753e4d164c639303e9411d0a752c/FLAG8a2f4df9b [2024-10-31 21:58:04,868 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/data/f97e70e9e/2330753e4d164c639303e9411d0a752c [2024-10-31 21:58:04,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 21:58:04,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 21:58:04,879 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:04,879 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 21:58:04,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 21:58:04,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ba2f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:04, skipping insertion in model container [2024-10-31 21:58:04,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 09:58:04" (1/1) ... [2024-10-31 21:58:04,923 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 21:58:05,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:05,172 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 21:58:05,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 21:58:05,211 INFO L204 MainTranslator]: Completed translation [2024-10-31 21:58:05,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05 WrapperNode [2024-10-31 21:58:05,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 21:58:05,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:05,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 21:58:05,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 21:58:05,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,231 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,252 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 22 [2024-10-31 21:58:05,253 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 21:58:05,253 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 21:58:05,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 21:58:05,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 21:58:05,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,284 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 21:58:05,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,285 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,295 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 21:58:05,297 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 21:58:05,298 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 21:58:05,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 21:58:05,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (1/1) ... [2024-10-31 21:58:05,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:05,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:05,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:05,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 21:58:05,421 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-10-31 21:58:05,422 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-10-31 21:58:05,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 21:58:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 21:58:05,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 21:58:05,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 21:58:05,519 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 21:58:05,522 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 21:58:05,629 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-10-31 21:58:05,629 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 21:58:05,646 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 21:58:05,647 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 21:58:05,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:05 BoogieIcfgContainer [2024-10-31 21:58:05,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 21:58:05,649 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 21:58:05,650 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 21:58:05,655 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 21:58:05,656 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 21:58:05,656 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 09:58:04" (1/3) ... [2024-10-31 21:58:05,657 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23dc3ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 09:58:05, skipping insertion in model container [2024-10-31 21:58:05,657 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 21:58:05,657 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 09:58:05" (2/3) ... [2024-10-31 21:58:05,658 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23dc3ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 09:58:05, skipping insertion in model container [2024-10-31 21:58:05,658 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 21:58:05,658 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 09:58:05" (3/3) ... [2024-10-31 21:58:05,660 INFO L332 chiAutomizerObserver]: Analyzing ICFG Fibonacci04.c [2024-10-31 21:58:05,729 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 21:58:05,730 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 21:58:05,730 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 21:58:05,730 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 21:58:05,730 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 21:58:05,730 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 21:58:05,730 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 21:58:05,731 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 21:58:05,735 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) [2024-10-31 21:58:05,757 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 21:58:05,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:58:05,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:58:05,765 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 21:58:05,765 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 21:58:05,766 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 21:58:05,766 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) [2024-10-31 21:58:05,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 21:58:05,768 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:58:05,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:58:05,769 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-10-31 21:58:05,769 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 21:58:05,776 INFO L745 eck$LassoCheckResult]: Stem: 14#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 6#L31true call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 10#$Ultimate##0true [2024-10-31 21:58:05,777 INFO L747 eck$LassoCheckResult]: Loop: 10#$Ultimate##0true ~n := #in~n; 16#L19true assume !(~n < 1); 5#L21true assume !(1 == ~n); 13#L24true call #t~ret4 := fibonacci(~n - 1);< 10#$Ultimate##0true [2024-10-31 21:58:05,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:05,783 INFO L85 PathProgramCache]: Analyzing trace with hash 42783, now seen corresponding path program 1 times [2024-10-31 21:58:05,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:05,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83778908] [2024-10-31 21:58:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:05,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:05,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:05,928 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:05,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:05,931 INFO L85 PathProgramCache]: Analyzing trace with hash 927643, now seen corresponding path program 1 times [2024-10-31 21:58:05,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:05,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834874220] [2024-10-31 21:58:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:05,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:05,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:05,950 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:05,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash 856297401, now seen corresponding path program 1 times [2024-10-31 21:58:05,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:05,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230440382] [2024-10-31 21:58:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:05,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:05,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:05,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:06,114 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:06,115 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:06,115 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:06,115 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:06,115 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:58:06,115 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,116 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:06,116 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:06,116 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration1_Loop [2024-10-31 21:58:06,116 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:06,117 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:06,134 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,143 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,147 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,151 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,283 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:06,284 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:58:06,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-31 21:58:06,295 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:06,296 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:06,321 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:06,322 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:06,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-31 21:58:06,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-31 21:58:06,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:06,349 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:06,369 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:06,369 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:06,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2024-10-31 21:58:06,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-31 21:58:06,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:06,397 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:06,418 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:06,418 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:06,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-31 21:58:06,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-31 21:58:06,444 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:06,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:06,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2024-10-31 21:58:06,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,488 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-31 21:58:06,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:58:06,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:06,582 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:58:06,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:06,585 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:06,586 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:06,586 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:06,586 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:06,586 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:58:06,586 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,586 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:06,586 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:06,586 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration1_Loop [2024-10-31 21:58:06,587 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:06,587 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:06,588 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,592 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,599 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,606 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,621 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:06,695 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:06,701 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:58:06,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,706 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-31 21:58:06,711 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:06,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:06,727 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:06,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:06,728 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:06,728 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:06,731 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:06,731 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:06,738 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:06,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:06,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-31 21:58:06,761 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:06,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:06,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:06,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:06,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:06,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:06,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:06,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:06,777 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:06,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2024-10-31 21:58:06,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,793 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-31 21:58:06,795 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:06,807 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:06,807 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:06,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:06,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:06,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:06,808 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:06,808 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:06,811 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:06,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-31 21:58:06,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,835 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2024-10-31 21:58:06,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:06,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:06,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:06,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:06,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:06,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:06,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:06,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:06,862 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:58:06,870 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 21:58:06,871 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-31 21:58:06,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:06,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:06,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:06,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-31 21:58:06,899 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:58:06,899 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 21:58:06,899 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:58:06,900 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2024-10-31 21:58:06,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:06,930 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 21:58:06,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 21:58:07,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 21:58:07,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:07,154 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-10-31 21:58:07,156 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) [2024-10-31 21:58:07,267 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. [2024-10-31 21:58:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:07,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 21:58:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2024-10-31 21:58:07,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 4 letters. [2024-10-31 21:58:07,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:07,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 7 letters. Loop has 4 letters. [2024-10-31 21:58:07,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:07,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 3 letters. Loop has 8 letters. [2024-10-31 21:58:07,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:07,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 53 transitions. [2024-10-31 21:58:07,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 21:58:07,292 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 23 states and 31 transitions. [2024-10-31 21:58:07,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2024-10-31 21:58:07,293 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-10-31 21:58:07,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 31 transitions. [2024-10-31 21:58:07,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:58:07,296 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 31 transitions. [2024-10-31 21:58:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 31 transitions. [2024-10-31 21:58:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2024-10-31 21:58:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-31 21:58:07,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-10-31 21:58:07,333 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-31 21:58:07,334 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-10-31 21:58:07,334 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 21:58:07,334 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2024-10-31 21:58:07,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 21:58:07,335 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:58:07,335 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:58:07,336 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:07,336 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:07,337 INFO L745 eck$LassoCheckResult]: Stem: 127#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 128#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 120#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 132#$Ultimate##0 ~n := #in~n; 134#L19 assume !(~n < 1); 131#L21 assume !(1 == ~n); 119#L24 call #t~ret4 := fibonacci(~n - 1);< 125#$Ultimate##0 ~n := #in~n; 133#L19 assume ~n < 1;#res := 0; 130#fibonacciFINAL assume true; 126#fibonacciEXIT >#31#return; 122#L24-1 [2024-10-31 21:58:07,339 INFO L747 eck$LassoCheckResult]: Loop: 122#L24-1 call #t~ret5 := fibonacci(~n - 2);< 124#$Ultimate##0 ~n := #in~n; 137#L19 assume !(~n < 1); 136#L21 assume !(1 == ~n); 121#L24 call #t~ret4 := fibonacci(~n - 1);< 124#$Ultimate##0 ~n := #in~n; 137#L19 assume ~n < 1;#res := 0; 123#fibonacciFINAL assume true; 135#fibonacciEXIT >#31#return; 122#L24-1 [2024-10-31 21:58:07,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:07,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2073663503, now seen corresponding path program 1 times [2024-10-31 21:58:07,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:07,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173946016] [2024-10-31 21:58:07,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:07,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:58:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:58:07,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:07,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173946016] [2024-10-31 21:58:07,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173946016] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:07,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:07,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:07,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031931030] [2024-10-31 21:58:07,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:07,564 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 21:58:07,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1606275375, now seen corresponding path program 1 times [2024-10-31 21:58:07,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:07,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231864348] [2024-10-31 21:58:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:07,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-31 21:58:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 21:58:07,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:07,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231864348] [2024-10-31 21:58:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231864348] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 21:58:07,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 21:58:07,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 21:58:07,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463279378] [2024-10-31 21:58:07,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 21:58:07,688 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 21:58:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 21:58:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 21:58:07,692 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 21:58:07,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:07,802 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-10-31 21:58:07,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2024-10-31 21:58:07,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 21:58:07,809 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2024-10-31 21:58:07,809 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-10-31 21:58:07,809 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-10-31 21:58:07,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2024-10-31 21:58:07,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:58:07,810 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-31 21:58:07,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2024-10-31 21:58:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-31 21:58:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-31 21:58:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-10-31 21:58:07,816 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-31 21:58:07,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 21:58:07,818 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-10-31 21:58:07,819 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 21:58:07,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2024-10-31 21:58:07,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 21:58:07,822 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:58:07,822 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:58:07,824 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:07,824 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:07,825 INFO L745 eck$LassoCheckResult]: Stem: 198#$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); 199#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 191#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 203#$Ultimate##0 ~n := #in~n; 205#L19 assume !(~n < 1); 202#L21 assume !(1 == ~n); 192#L24 call #t~ret4 := fibonacci(~n - 1);< 196#$Ultimate##0 ~n := #in~n; 204#L19 assume !(~n < 1); 200#L21 assume 1 == ~n;#res := 1; 201#fibonacciFINAL assume true; 197#fibonacciEXIT >#31#return; 193#L24-1 [2024-10-31 21:58:07,826 INFO L747 eck$LassoCheckResult]: Loop: 193#L24-1 call #t~ret5 := fibonacci(~n - 2);< 195#$Ultimate##0 ~n := #in~n; 210#L19 assume !(~n < 1); 208#L21 assume !(1 == ~n); 190#L24 call #t~ret4 := fibonacci(~n - 1);< 195#$Ultimate##0 ~n := #in~n; 210#L19 assume !(~n < 1); 208#L21 assume 1 == ~n;#res := 1; 209#fibonacciFINAL assume true; 211#fibonacciEXIT >#31#return; 193#L24-1 [2024-10-31 21:58:07,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:07,827 INFO L85 PathProgramCache]: Analyzing trace with hash -140916419, now seen corresponding path program 1 times [2024-10-31 21:58:07,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:07,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602175015] [2024-10-31 21:58:07,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:07,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:07,843 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:07,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:07,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1745046499, now seen corresponding path program 1 times [2024-10-31 21:58:07,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:07,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513531028] [2024-10-31 21:58:07,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:07,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:07,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:07,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:07,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:07,921 INFO L85 PathProgramCache]: Analyzing trace with hash 441000537, now seen corresponding path program 1 times [2024-10-31 21:58:07,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-31 21:58:07,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:07,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906119641] [2024-10-31 21:58:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:07,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:08,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:58:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:08,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-31 21:58:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 21:58:08,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:08,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906119641] [2024-10-31 21:58:08,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906119641] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:08,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756874120] [2024-10-31 21:58:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:08,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:08,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:08,140 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:08,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-31 21:58:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:08,210 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:58:08,212 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 21:58:08,263 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-31 21:58:08,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756874120] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:08,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:08,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-10-31 21:58:08,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088509487] [2024-10-31 21:58:08,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:08,596 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:08,597 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:08,597 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:08,597 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:08,597 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:58:08,597 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:08,597 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:08,597 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:08,597 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration3_Loop [2024-10-31 21:58:08,597 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:08,597 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:08,598 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:08,602 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:08,607 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:08,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:08,622 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:08,737 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:08,737 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:58:08,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:08,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:08,742 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:08,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-31 21:58:08,748 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:08,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:08,789 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:08,789 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:08,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:08,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:08,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:08,826 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:08,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-31 21:58:08,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:08,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:08,865 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:08,865 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=1} Honda state: {fibonacci_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:08,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2024-10-31 21:58:08,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:08,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:08,899 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:08,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-31 21:58:08,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:08,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:08,925 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:08,926 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:08,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2024-10-31 21:58:08,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:08,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:08,943 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:08,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-31 21:58:08,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:08,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:08,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-31 21:58:08,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:08,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:08,989 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:08,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-31 21:58:08,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:58:08,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:09,015 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:58:09,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:09,033 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:09,033 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:09,033 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:09,033 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:09,033 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:58:09,033 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:09,033 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:09,033 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:09,033 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration3_Loop [2024-10-31 21:58:09,033 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:09,034 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:09,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:09,042 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:09,046 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:09,049 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:09,058 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:09,116 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:09,116 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:58:09,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:09,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:09,119 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:09,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-31 21:58:09,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:09,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:09,138 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:09,138 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:09,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:09,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:09,140 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:09,140 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:09,143 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:09,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2024-10-31 21:58:09,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:09,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:09,165 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:09,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-31 21:58:09,170 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:09,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:09,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:09,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:09,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:09,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:09,188 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:09,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:09,191 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:09,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-31 21:58:09,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:09,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:09,216 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:09,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-31 21:58:09,222 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:09,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:09,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:09,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:09,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:09,239 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:09,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:09,242 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:09,245 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:09,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-10-31 21:58:09,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:09,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:09,268 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:09,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2024-10-31 21:58:09,271 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:09,285 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:09,285 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:09,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:09,286 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:09,286 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:09,287 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:09,287 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:09,291 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:58:09,296 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 21:58:09,296 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-31 21:58:09,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:09,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:09,298 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:09,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-31 21:58:09,306 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:58:09,306 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 21:58:09,307 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:58:09,307 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2024-10-31 21:58:09,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:09,328 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 21:58:09,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:09,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 21:58:09,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:09,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 21:58:09,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:09,644 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2024-10-31 21:58:09,644 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 21:58:09,949 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 128 states and 178 transitions. Complement of second has 40 states. [2024-10-31 21:58:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 21:58:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2024-10-31 21:58:09,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 10 letters. [2024-10-31 21:58:09,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:09,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 22 letters. Loop has 10 letters. [2024-10-31 21:58:09,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:09,953 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 12 letters. Loop has 20 letters. [2024-10-31 21:58:09,953 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:09,953 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 128 states and 178 transitions. [2024-10-31 21:58:09,959 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2024-10-31 21:58:09,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 128 states to 105 states and 151 transitions. [2024-10-31 21:58:09,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2024-10-31 21:58:09,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 66 [2024-10-31 21:58:09,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 151 transitions. [2024-10-31 21:58:09,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:58:09,966 INFO L218 hiAutomatonCegarLoop]: Abstraction has 105 states and 151 transitions. [2024-10-31 21:58:09,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 151 transitions. [2024-10-31 21:58:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 94. [2024-10-31 21:58:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (35), 18 states have call predecessors, (35), 19 states have call successors, (35) [2024-10-31 21:58:09,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 128 transitions. [2024-10-31 21:58:09,980 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 128 transitions. [2024-10-31 21:58:09,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 21:58:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-31 21:58:09,981 INFO L87 Difference]: Start difference. First operand 94 states and 128 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 21:58:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:10,070 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2024-10-31 21:58:10,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 57 transitions. [2024-10-31 21:58:10,072 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 21:58:10,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 53 transitions. [2024-10-31 21:58:10,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2024-10-31 21:58:10,073 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2024-10-31 21:58:10,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 53 transitions. [2024-10-31 21:58:10,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:58:10,074 INFO L218 hiAutomatonCegarLoop]: Abstraction has 41 states and 53 transitions. [2024-10-31 21:58:10,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 53 transitions. [2024-10-31 21:58:10,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2024-10-31 21:58:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2024-10-31 21:58:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2024-10-31 21:58:10,078 INFO L240 hiAutomatonCegarLoop]: Abstraction has 38 states and 47 transitions. [2024-10-31 21:58:10,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 21:58:10,079 INFO L425 stractBuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2024-10-31 21:58:10,079 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 21:58:10,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 47 transitions. [2024-10-31 21:58:10,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2024-10-31 21:58:10,081 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:58:10,081 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:58:10,083 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 21:58:10,083 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2024-10-31 21:58:10,083 INFO L745 eck$LassoCheckResult]: Stem: 775#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 776#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 769#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 780#$Ultimate##0 ~n := #in~n; 783#L19 assume !(~n < 1); 779#L21 assume !(1 == ~n); 766#L24 call #t~ret4 := fibonacci(~n - 1);< 772#$Ultimate##0 ~n := #in~n; 786#L19 assume !(~n < 1); 800#L21 assume !(1 == ~n); 765#L24 call #t~ret4 := fibonacci(~n - 1);< 772#$Ultimate##0 ~n := #in~n; 785#L19 assume !(~n < 1); 777#L21 assume 1 == ~n;#res := 1; 778#fibonacciFINAL assume true; 798#fibonacciEXIT >#31#return; 795#L24-1 call #t~ret5 := fibonacci(~n - 2);< 796#$Ultimate##0 ~n := #in~n; 799#L19 assume ~n < 1;#res := 0; 797#fibonacciFINAL assume true; 794#fibonacciEXIT >#33#return; 793#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 792#fibonacciFINAL assume true; 791#fibonacciEXIT >#31#return; 768#L24-1 [2024-10-31 21:58:10,083 INFO L747 eck$LassoCheckResult]: Loop: 768#L24-1 call #t~ret5 := fibonacci(~n - 2);< 771#$Ultimate##0 ~n := #in~n; 790#L19 assume !(~n < 1); 788#L21 assume !(1 == ~n); 767#L24 call #t~ret4 := fibonacci(~n - 1);< 771#$Ultimate##0 ~n := #in~n; 790#L19 assume !(~n < 1); 788#L21 assume !(1 == ~n); 767#L24 call #t~ret4 := fibonacci(~n - 1);< 771#$Ultimate##0 ~n := #in~n; 790#L19 assume !(~n < 1); 788#L21 assume 1 == ~n;#res := 1; 789#fibonacciFINAL assume true; 801#fibonacciEXIT >#31#return; 774#L24-1 call #t~ret5 := fibonacci(~n - 2);< 784#$Ultimate##0 ~n := #in~n; 781#L19 assume ~n < 1;#res := 0; 782#fibonacciFINAL assume true; 773#fibonacciEXIT >#33#return; 764#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 770#fibonacciFINAL assume true; 787#fibonacciEXIT >#31#return; 768#L24-1 [2024-10-31 21:58:10,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:10,084 INFO L85 PathProgramCache]: Analyzing trace with hash 62997961, now seen corresponding path program 1 times [2024-10-31 21:58:10,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:10,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919494160] [2024-10-31 21:58:10,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:10,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:10,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2024-10-31 21:58:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:10,103 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:10,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:10,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1749360471, now seen corresponding path program 1 times [2024-10-31 21:58:10,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:10,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866156967] [2024-10-31 21:58:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:10,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:10,149 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:10,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash 969547889, now seen corresponding path program 2 times [2024-10-31 21:58:10,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:10,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11221136] [2024-10-31 21:58:10,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:10,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:58:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-31 21:58:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-31 21:58:10,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:10,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11221136] [2024-10-31 21:58:10,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11221136] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:10,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135160653] [2024-10-31 21:58:10,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:58:10,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:10,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:10,451 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:10,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-31 21:58:10,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:58:10,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:10,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:58:10,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 50 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-31 21:58:10,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:10,957 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 52 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-31 21:58:10,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135160653] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:10,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:10,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 15 [2024-10-31 21:58:10,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556666527] [2024-10-31 21:58:10,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:11,241 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:11,241 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:11,242 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:11,242 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:11,242 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:58:11,242 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,242 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:11,242 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:11,242 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration4_Loop [2024-10-31 21:58:11,242 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:11,243 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:11,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,251 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,255 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,259 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,262 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,315 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:11,315 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:58:11,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,317 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-31 21:58:11,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:11,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:11,339 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:11,339 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=1} Honda state: {fibonacci_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:11,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2024-10-31 21:58:11,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,362 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-31 21:58:11,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:11,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:11,386 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:11,387 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:11,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:11,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,412 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-31 21:58:11,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:11,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:11,429 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:11,429 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#in~n=3} Honda state: {fibonacci_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:11,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2024-10-31 21:58:11,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,467 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:11,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:11,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-31 21:58:11,494 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:11,494 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:11,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-10-31 21:58:11,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,507 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-31 21:58:11,513 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:11,513 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:11,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2024-10-31 21:58:11,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,569 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-31 21:58:11,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:58:11,571 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:11,587 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:58:11,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2024-10-31 21:58:11,626 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:11,626 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:11,626 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:11,626 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:11,626 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:58:11,626 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,626 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:11,627 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:11,627 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration4_Loop [2024-10-31 21:58:11,627 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:11,627 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:11,628 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,631 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,634 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,640 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,643 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:11,712 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:11,712 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:58:11,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,717 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-31 21:58:11,719 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:11,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:11,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:11,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:11,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:11,737 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:11,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:11,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:11,741 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:11,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:11,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,765 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-31 21:58:11,768 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:11,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:11,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:11,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:11,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:11,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:11,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:11,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:11,792 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:11,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:11,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,815 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-31 21:58:11,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:11,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:11,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:11,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:11,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:11,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:11,836 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:11,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:11,838 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:11,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:11,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,861 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2024-10-31 21:58:11,865 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:11,883 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:11,883 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:11,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:11,884 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:11,884 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:11,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:11,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:11,887 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:11,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:11,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,910 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2024-10-31 21:58:11,914 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:11,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:11,936 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:11,936 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:11,936 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:11,936 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:11,938 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:11,939 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:11,943 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:58:11,947 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-31 21:58:11,947 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 21:58:11,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:11,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:11,950 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:11,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2024-10-31 21:58:11,953 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:58:11,953 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 21:58:11,954 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:58:11,954 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2024-10-31 21:58:11,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:11,976 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 21:58:11,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:12,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:58:12,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:12,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-31 21:58:12,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:12,547 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 21:58:12,547 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-31 21:58:12,548 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:58:12,699 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 45 states and 54 transitions. Complement of second has 11 states. [2024-10-31 21:58:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:58:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-10-31 21:58:12,701 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 24 letters. Loop has 22 letters. [2024-10-31 21:58:12,701 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:12,701 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:58:12,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:12,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:58:12,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:13,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-31 21:58:13,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 21:58:13,235 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-31 21:58:13,235 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:58:13,384 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 45 states and 54 transitions. Complement of second has 11 states. [2024-10-31 21:58:13,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:13,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:58:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2024-10-31 21:58:13,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 24 letters. Loop has 22 letters. [2024-10-31 21:58:13,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:13,389 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:58:13,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2024-10-31 21:58:13,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:13,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:58:13,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:13,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-31 21:58:13,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 21:58:13,958 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2024-10-31 21:58:13,958 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:58:14,340 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 331 states and 432 transitions. Complement of second has 134 states. [2024-10-31 21:58:14,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:14,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-31 21:58:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 45 transitions. [2024-10-31 21:58:14,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 24 letters. Loop has 22 letters. [2024-10-31 21:58:14,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:14,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 46 letters. Loop has 22 letters. [2024-10-31 21:58:14,347 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:14,347 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 45 transitions. Stem has 24 letters. Loop has 44 letters. [2024-10-31 21:58:14,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:14,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 331 states and 432 transitions. [2024-10-31 21:58:14,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-31 21:58:14,377 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 331 states to 215 states and 294 transitions. [2024-10-31 21:58:14,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 97 [2024-10-31 21:58:14,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2024-10-31 21:58:14,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 215 states and 294 transitions. [2024-10-31 21:58:14,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:58:14,384 INFO L218 hiAutomatonCegarLoop]: Abstraction has 215 states and 294 transitions. [2024-10-31 21:58:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states and 294 transitions. [2024-10-31 21:58:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 173. [2024-10-31 21:58:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 113 states have internal predecessors, (122), 38 states have call successors, (42), 23 states have call predecessors, (42), 28 states have return successors, (61), 36 states have call predecessors, (61), 36 states have call successors, (61) [2024-10-31 21:58:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 225 transitions. [2024-10-31 21:58:14,418 INFO L240 hiAutomatonCegarLoop]: Abstraction has 173 states and 225 transitions. [2024-10-31 21:58:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 21:58:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-10-31 21:58:14,420 INFO L87 Difference]: Start difference. First operand 173 states and 225 transitions. Second operand has 15 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 13 states have internal predecessors, (38), 10 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 9 states have call successors, (12) [2024-10-31 21:58:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:14,640 INFO L93 Difference]: Finished difference Result 274 states and 380 transitions. [2024-10-31 21:58:14,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 274 states and 380 transitions. [2024-10-31 21:58:14,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-31 21:58:14,667 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 274 states to 273 states and 378 transitions. [2024-10-31 21:58:14,667 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 146 [2024-10-31 21:58:14,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 156 [2024-10-31 21:58:14,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 273 states and 378 transitions. [2024-10-31 21:58:14,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:58:14,668 INFO L218 hiAutomatonCegarLoop]: Abstraction has 273 states and 378 transitions. [2024-10-31 21:58:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states and 378 transitions. [2024-10-31 21:58:14,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 212. [2024-10-31 21:58:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 130 states have (on average 1.123076923076923) internal successors, (146), 134 states have internal predecessors, (146), 47 states have call successors, (55), 27 states have call predecessors, (55), 35 states have return successors, (94), 50 states have call predecessors, (94), 45 states have call successors, (94) [2024-10-31 21:58:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 295 transitions. [2024-10-31 21:58:14,709 INFO L240 hiAutomatonCegarLoop]: Abstraction has 212 states and 295 transitions. [2024-10-31 21:58:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:58:14,710 INFO L425 stractBuchiCegarLoop]: Abstraction has 212 states and 295 transitions. [2024-10-31 21:58:14,710 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-31 21:58:14,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 212 states and 295 transitions. [2024-10-31 21:58:14,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-31 21:58:14,714 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:58:14,714 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:58:14,715 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 6, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-10-31 21:58:14,716 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2024-10-31 21:58:14,717 INFO L745 eck$LassoCheckResult]: Stem: 2662#$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); 2663#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 2671#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 2672#$Ultimate##0 ~n := #in~n; 2723#L19 assume !(~n < 1); 2707#L21 assume !(1 == ~n); 2704#L24 call #t~ret4 := fibonacci(~n - 1);< 2705#$Ultimate##0 ~n := #in~n; 2713#L19 assume !(~n < 1); 2714#L21 assume !(1 == ~n); 2703#L24 call #t~ret4 := fibonacci(~n - 1);< 2705#$Ultimate##0 ~n := #in~n; 2713#L19 assume !(~n < 1); 2714#L21 assume !(1 == ~n); 2703#L24 call #t~ret4 := fibonacci(~n - 1);< 2705#$Ultimate##0 ~n := #in~n; 2722#L19 assume !(~n < 1); 2775#L21 assume 1 == ~n;#res := 1; 2774#fibonacciFINAL assume true; 2771#fibonacciEXIT >#31#return; 2755#L24-1 call #t~ret5 := fibonacci(~n - 2);< 2756#$Ultimate##0 ~n := #in~n; 2767#L19 assume ~n < 1;#res := 0; 2765#fibonacciFINAL assume true; 2754#fibonacciEXIT >#33#return; 2752#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2750#fibonacciFINAL assume true; 2746#fibonacciEXIT >#31#return; 2738#L24-1 call #t~ret5 := fibonacci(~n - 2);< 2731#$Ultimate##0 ~n := #in~n; 2748#L19 assume ~n < 1;#res := 0; 2745#fibonacciFINAL assume true; 2737#fibonacciEXIT >#33#return; 2739#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2744#fibonacciFINAL assume true; 2702#fibonacciEXIT >#31#return; 2693#L24-1 call #t~ret5 := fibonacci(~n - 2);< 2698#$Ultimate##0 ~n := #in~n; 2692#L19 assume !(~n < 1); 2695#L21 assume !(1 == ~n); 2820#L24 call #t~ret4 := fibonacci(~n - 1);< 2653#$Ultimate##0 ~n := #in~n; 2846#L19 assume !(~n < 1); 2847#L21 assume !(1 == ~n); 2822#L24 call #t~ret4 := fibonacci(~n - 1);< 2824#$Ultimate##0 [2024-10-31 21:58:14,717 INFO L747 eck$LassoCheckResult]: Loop: 2824#$Ultimate##0 ~n := #in~n; 2842#L19 assume !(~n < 1); 2841#L21 assume !(1 == ~n); 2823#L24 call #t~ret4 := fibonacci(~n - 1);< 2824#$Ultimate##0 [2024-10-31 21:58:14,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash 972481951, now seen corresponding path program 3 times [2024-10-31 21:58:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:14,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493345120] [2024-10-31 21:58:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:14,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:58:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 21:58:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 67 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-31 21:58:14,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:14,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493345120] [2024-10-31 21:58:14,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493345120] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:14,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178037000] [2024-10-31 21:58:14,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 21:58:14,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:14,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:14,981 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:14,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-31 21:58:15,068 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-31 21:58:15,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:15,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 21:58:15,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 15 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-31 21:58:15,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-10-31 21:58:15,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178037000] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:15,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:15,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 16 [2024-10-31 21:58:15,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965127943] [2024-10-31 21:58:15,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:15,513 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 21:58:15,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:15,515 INFO L85 PathProgramCache]: Analyzing trace with hash 927643, now seen corresponding path program 2 times [2024-10-31 21:58:15,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:15,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54865906] [2024-10-31 21:58:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:15,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:15,520 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:15,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:15,580 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:15,580 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:15,581 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:15,581 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:15,581 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:58:15,581 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:15,581 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:15,581 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:15,581 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration5_Loop [2024-10-31 21:58:15,582 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:15,582 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:15,583 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:15,588 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:15,591 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:15,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:15,604 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:15,656 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:15,656 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:58:15,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:15,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:15,658 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:15,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2024-10-31 21:58:15,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:15,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:15,679 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:15,679 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:15,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2024-10-31 21:58:15,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:15,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:15,697 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:15,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2024-10-31 21:58:15,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:15,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:15,720 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:15,720 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:15,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:15,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:15,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:15,740 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:15,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2024-10-31 21:58:15,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:15,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:15,760 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:15,760 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=0} Honda state: {fibonacci_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:15,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:15,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:15,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:15,779 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:15,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2024-10-31 21:58:15,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:15,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:15,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2024-10-31 21:58:15,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:15,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:15,821 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:15,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2024-10-31 21:58:15,823 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:58:15,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:15,978 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:58:15,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2024-10-31 21:58:15,989 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:15,990 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:15,990 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:15,990 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:15,990 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:58:15,990 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:15,990 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:15,993 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:15,993 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration5_Loop [2024-10-31 21:58:15,993 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:15,993 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:15,994 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:16,004 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:16,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:16,032 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:16,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:16,087 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:16,087 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:58:16,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:16,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:16,089 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:16,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2024-10-31 21:58:16,091 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:16,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:16,106 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:16,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:16,106 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:16,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:16,106 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:16,107 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:16,108 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:16,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2024-10-31 21:58:16,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:16,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:16,138 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:16,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2024-10-31 21:58:16,142 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:16,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:16,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:16,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:16,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:16,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:16,159 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:16,159 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:16,161 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:16,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:16,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:16,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:16,185 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:16,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2024-10-31 21:58:16,187 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:16,202 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:16,202 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:16,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:16,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:16,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:16,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:16,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:16,207 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:58:16,209 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2024-10-31 21:58:16,209 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-31 21:58:16,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:16,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:16,212 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:16,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2024-10-31 21:58:16,214 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:58:16,214 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 21:58:16,214 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:58:16,214 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2024-10-31 21:58:16,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:16,232 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 21:58:16,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:16,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 21:58:16,314 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:16,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 21:58:16,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:16,669 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-31 21:58:16,669 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 295 transitions. cyclomatic complexity: 87 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 21:58:16,746 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 212 states and 295 transitions. cyclomatic complexity: 87. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 234 states and 321 transitions. Complement of second has 17 states. [2024-10-31 21:58:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:16,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 21:58:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-10-31 21:58:16,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2024-10-31 21:58:16,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:16,749 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:58:16,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:16,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 21:58:16,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:16,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2024-10-31 21:58:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:17,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 21:58:17,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:17,249 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-31 21:58:17,249 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 295 transitions. cyclomatic complexity: 87 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 21:58:17,322 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 212 states and 295 transitions. cyclomatic complexity: 87. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 234 states and 321 transitions. Complement of second has 17 states. [2024-10-31 21:58:17,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 21:58:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2024-10-31 21:58:17,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2024-10-31 21:58:17,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:17,324 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:58:17,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:17,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 21:58:17,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:17,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-31 21:58:17,722 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:17,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 21:58:17,753 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2024-10-31 21:58:17,754 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 295 transitions. cyclomatic complexity: 87 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 21:58:17,847 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 212 states and 295 transitions. cyclomatic complexity: 87. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 285 states and 374 transitions. Complement of second has 19 states. [2024-10-31 21:58:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 21:58:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 21 transitions. [2024-10-31 21:58:17,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2024-10-31 21:58:17,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:17,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2024-10-31 21:58:17,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:17,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2024-10-31 21:58:17,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:17,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 285 states and 374 transitions. [2024-10-31 21:58:17,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-31 21:58:17,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 285 states to 230 states and 317 transitions. [2024-10-31 21:58:17,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 105 [2024-10-31 21:58:17,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 108 [2024-10-31 21:58:17,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 230 states and 317 transitions. [2024-10-31 21:58:17,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:58:17,859 INFO L218 hiAutomatonCegarLoop]: Abstraction has 230 states and 317 transitions. [2024-10-31 21:58:17,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states and 317 transitions. [2024-10-31 21:58:17,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2024-10-31 21:58:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 141 states have (on average 1.1134751773049645) internal successors, (157), 145 states have internal predecessors, (157), 48 states have call successors, (56), 28 states have call predecessors, (56), 35 states have return successors, (97), 50 states have call predecessors, (97), 46 states have call successors, (97) [2024-10-31 21:58:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 310 transitions. [2024-10-31 21:58:17,872 INFO L240 hiAutomatonCegarLoop]: Abstraction has 224 states and 310 transitions. [2024-10-31 21:58:17,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:17,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-31 21:58:17,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-10-31 21:58:17,874 INFO L87 Difference]: Start difference. First operand 224 states and 310 transitions. Second operand has 16 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 9 states have call predecessors, (12), 5 states have call successors, (12) [2024-10-31 21:58:18,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:18,078 INFO L93 Difference]: Finished difference Result 275 states and 360 transitions. [2024-10-31 21:58:18,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 275 states and 360 transitions. [2024-10-31 21:58:18,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-31 21:58:18,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 275 states to 229 states and 292 transitions. [2024-10-31 21:58:18,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 97 [2024-10-31 21:58:18,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 97 [2024-10-31 21:58:18,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229 states and 292 transitions. [2024-10-31 21:58:18,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:58:18,087 INFO L218 hiAutomatonCegarLoop]: Abstraction has 229 states and 292 transitions. [2024-10-31 21:58:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states and 292 transitions. [2024-10-31 21:58:18,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 206. [2024-10-31 21:58:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 132 states have (on average 1.121212121212121) internal successors, (148), 137 states have internal predecessors, (148), 41 states have call successors, (41), 27 states have call predecessors, (41), 33 states have return successors, (66), 41 states have call predecessors, (66), 38 states have call successors, (66) [2024-10-31 21:58:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 255 transitions. [2024-10-31 21:58:18,097 INFO L240 hiAutomatonCegarLoop]: Abstraction has 206 states and 255 transitions. [2024-10-31 21:58:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-31 21:58:18,098 INFO L425 stractBuchiCegarLoop]: Abstraction has 206 states and 255 transitions. [2024-10-31 21:58:18,099 INFO L332 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-10-31 21:58:18,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 206 states and 255 transitions. [2024-10-31 21:58:18,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-31 21:58:18,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:58:18,100 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:58:18,102 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 8, 6, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-10-31 21:58:18,102 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [7, 6, 5, 4, 4, 3, 3, 2, 2, 2, 1] [2024-10-31 21:58:18,102 INFO L745 eck$LassoCheckResult]: Stem: 5010#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 5011#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 5016#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 5017#$Ultimate##0 ~n := #in~n; 5050#L19 assume !(~n < 1); 5049#L21 assume !(1 == ~n); 5042#L24 call #t~ret4 := fibonacci(~n - 1);< 5048#$Ultimate##0 ~n := #in~n; 5089#L19 assume !(~n < 1); 5090#L21 assume !(1 == ~n); 5041#L24 call #t~ret4 := fibonacci(~n - 1);< 5045#$Ultimate##0 ~n := #in~n; 5121#L19 assume !(~n < 1); 5051#L21 assume !(1 == ~n); 5043#L24 call #t~ret4 := fibonacci(~n - 1);< 5045#$Ultimate##0 ~n := #in~n; 5121#L19 assume !(~n < 1); 5051#L21 assume !(1 == ~n); 5043#L24 call #t~ret4 := fibonacci(~n - 1);< 5045#$Ultimate##0 ~n := #in~n; 5119#L19 assume !(~n < 1); 5118#L21 assume 1 == ~n;#res := 1; 5116#fibonacciFINAL assume true; 5111#fibonacciEXIT >#31#return; 5098#L24-1 call #t~ret5 := fibonacci(~n - 2);< 5099#$Ultimate##0 ~n := #in~n; 5110#L19 assume ~n < 1;#res := 0; 5109#fibonacciFINAL assume true; 5097#fibonacciEXIT >#33#return; 5095#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5093#fibonacciFINAL assume true; 5091#fibonacciEXIT >#31#return; 5060#L24-1 call #t~ret5 := fibonacci(~n - 2);< 5061#$Ultimate##0 ~n := #in~n; 5070#L19 assume !(~n < 1); 5064#L21 assume 1 == ~n;#res := 1; 5028#fibonacciFINAL assume true; 5059#fibonacciEXIT >#33#return; 5044#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5047#fibonacciFINAL assume true; 5040#fibonacciEXIT >#31#return; 5036#L24-1 call #t~ret5 := fibonacci(~n - 2);< 5035#$Ultimate##0 ~n := #in~n; 5077#L19 assume !(~n < 1); 5076#L21 assume !(1 == ~n); 5004#L24 call #t~ret4 := fibonacci(~n - 1);< 5073#$Ultimate##0 ~n := #in~n; 5080#L19 assume !(~n < 1); 5015#L21 assume !(1 == ~n); 4990#L24 [2024-10-31 21:58:18,102 INFO L747 eck$LassoCheckResult]: Loop: 4990#L24 call #t~ret4 := fibonacci(~n - 1);< 5005#$Ultimate##0 ~n := #in~n; 5163#L19 assume !(~n < 1); 5168#L21 assume !(1 == ~n); 4991#L24 call #t~ret4 := fibonacci(~n - 1);< 5005#$Ultimate##0 ~n := #in~n; 5163#L19 assume !(~n < 1); 5168#L21 assume !(1 == ~n); 4991#L24 call #t~ret4 := fibonacci(~n - 1);< 5005#$Ultimate##0 ~n := #in~n; 5164#L19 assume !(~n < 1); 5178#L21 assume 1 == ~n;#res := 1; 5177#fibonacciFINAL assume true; 5174#fibonacciEXIT >#31#return; 5171#L24-1 call #t~ret5 := fibonacci(~n - 2);< 5172#$Ultimate##0 ~n := #in~n; 5176#L19 assume ~n < 1;#res := 0; 5173#fibonacciFINAL assume true; 5170#fibonacciEXIT >#33#return; 5169#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5167#fibonacciFINAL assume true; 5166#fibonacciEXIT >#31#return; 5013#L24-1 call #t~ret5 := fibonacci(~n - 2);< 5162#$Ultimate##0 ~n := #in~n; 5161#L19 assume !(~n < 1); 5012#L21 assume 1 == ~n;#res := 1; 5014#fibonacciFINAL assume true; 5182#fibonacciEXIT >#33#return; 4989#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 4992#fibonacciFINAL assume true; 5006#fibonacciEXIT >#31#return; 5000#L24-1 call #t~ret5 := fibonacci(~n - 2);< 5031#$Ultimate##0 ~n := #in~n; 5030#L19 assume !(~n < 1); 5025#L21 assume !(1 == ~n); 4999#L24 call #t~ret4 := fibonacci(~n - 1);< 5002#$Ultimate##0 ~n := #in~n; 5080#L19 assume !(~n < 1); 5015#L21 assume !(1 == ~n); 4990#L24 [2024-10-31 21:58:18,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash -283481797, now seen corresponding path program 4 times [2024-10-31 21:58:18,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:18,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900412967] [2024-10-31 21:58:18,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-31 21:58:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 21:58:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 55 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-31 21:58:18,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:18,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900412967] [2024-10-31 21:58:18,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900412967] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:18,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810841234] [2024-10-31 21:58:18,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 21:58:18,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:18,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:18,426 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:18,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-31 21:58:18,474 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 21:58:18,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:18,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 21:58:18,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 55 proven. 39 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-31 21:58:18,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:18,992 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 55 proven. 46 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-10-31 21:58:18,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810841234] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:18,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:18,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 15 [2024-10-31 21:58:18,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453297542] [2024-10-31 21:58:18,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:18,994 INFO L750 eck$LassoCheckResult]: stem already infeasible [2024-10-31 21:58:18,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:18,994 INFO L85 PathProgramCache]: Analyzing trace with hash 309841573, now seen corresponding path program 2 times [2024-10-31 21:58:18,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:18,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267028821] [2024-10-31 21:58:18,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:18,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-31 21:58:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,230 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 21:58:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-31 21:58:19,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:19,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267028821] [2024-10-31 21:58:19,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267028821] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:19,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489005078] [2024-10-31 21:58:19,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 21:58:19,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:19,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:19,245 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:19,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-31 21:58:19,296 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 21:58:19,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:19,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-31 21:58:19,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-31 21:58:19,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 46 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-10-31 21:58:19,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489005078] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:19,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 15 [2024-10-31 21:58:19,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541350597] [2024-10-31 21:58:19,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:19,765 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 21:58:19,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 21:58:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-31 21:58:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-31 21:58:19,768 INFO L87 Difference]: Start difference. First operand 206 states and 255 transitions. cyclomatic complexity: 53 Second operand has 16 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (11), 5 states have call predecessors, (11), 9 states have call successors, (11) [2024-10-31 21:58:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 21:58:19,956 INFO L93 Difference]: Finished difference Result 290 states and 388 transitions. [2024-10-31 21:58:19,956 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 290 states and 388 transitions. [2024-10-31 21:58:19,960 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-31 21:58:19,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 290 states to 278 states and 370 transitions. [2024-10-31 21:58:19,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 112 [2024-10-31 21:58:19,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2024-10-31 21:58:19,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 278 states and 370 transitions. [2024-10-31 21:58:19,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-31 21:58:19,967 INFO L218 hiAutomatonCegarLoop]: Abstraction has 278 states and 370 transitions. [2024-10-31 21:58:19,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states and 370 transitions. [2024-10-31 21:58:19,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 250. [2024-10-31 21:58:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 160 states have (on average 1.1375) internal successors, (182), 161 states have internal predecessors, (182), 52 states have call successors, (52), 35 states have call predecessors, (52), 38 states have return successors, (94), 53 states have call predecessors, (94), 49 states have call successors, (94) [2024-10-31 21:58:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 328 transitions. [2024-10-31 21:58:19,983 INFO L240 hiAutomatonCegarLoop]: Abstraction has 250 states and 328 transitions. [2024-10-31 21:58:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 21:58:19,985 INFO L425 stractBuchiCegarLoop]: Abstraction has 250 states and 328 transitions. [2024-10-31 21:58:19,985 INFO L332 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-10-31 21:58:19,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 250 states and 328 transitions. [2024-10-31 21:58:19,987 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2024-10-31 21:58:19,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 21:58:19,987 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 21:58:19,991 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 9, 7, 6, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2024-10-31 21:58:19,993 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [11, 9, 9, 6, 6, 5, 5, 4, 4, 3, 2] [2024-10-31 21:58:19,994 INFO L745 eck$LassoCheckResult]: Stem: 6189#$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); 6190#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 6194#L31 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 6195#$Ultimate##0 ~n := #in~n; 6233#L19 assume !(~n < 1); 6232#L21 assume !(1 == ~n); 6224#L24 call #t~ret4 := fibonacci(~n - 1);< 6231#$Ultimate##0 ~n := #in~n; 6264#L19 assume !(~n < 1); 6263#L21 assume !(1 == ~n); 6226#L24 call #t~ret4 := fibonacci(~n - 1);< 6228#$Ultimate##0 ~n := #in~n; 6275#L19 assume !(~n < 1); 6234#L21 assume !(1 == ~n); 6225#L24 call #t~ret4 := fibonacci(~n - 1);< 6228#$Ultimate##0 ~n := #in~n; 6275#L19 assume !(~n < 1); 6234#L21 assume !(1 == ~n); 6225#L24 call #t~ret4 := fibonacci(~n - 1);< 6228#$Ultimate##0 ~n := #in~n; 6283#L19 assume !(~n < 1); 6328#L21 assume 1 == ~n;#res := 1; 6327#fibonacciFINAL assume true; 6324#fibonacciEXIT >#31#return; 6322#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6323#$Ultimate##0 ~n := #in~n; 6330#L19 assume ~n < 1;#res := 0; 6329#fibonacciFINAL assume true; 6321#fibonacciEXIT >#33#return; 6320#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6319#fibonacciFINAL assume true; 6261#fibonacciEXIT >#31#return; 6253#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6254#$Ultimate##0 ~n := #in~n; 6311#L19 assume !(~n < 1); 6309#L21 assume 1 == ~n;#res := 1; 6212#fibonacciFINAL assume true; 6252#fibonacciEXIT >#33#return; 6249#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6246#fibonacciFINAL assume true; 6241#fibonacciEXIT >#31#return; 6240#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6244#$Ultimate##0 ~n := #in~n; 6331#L19 assume !(~n < 1); 6307#L21 assume !(1 == ~n); 6308#L24 call #t~ret4 := fibonacci(~n - 1);< 6315#$Ultimate##0 ~n := #in~n; 6353#L19 assume !(~n < 1); 6317#L21 assume 1 == ~n;#res := 1; 6316#fibonacciFINAL assume true; 6313#fibonacciEXIT >#31#return; 6256#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6259#$Ultimate##0 ~n := #in~n; 6312#L19 assume ~n < 1;#res := 0; 6310#fibonacciFINAL assume true; 6255#fibonacciEXIT >#33#return; 6258#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6332#fibonacciFINAL assume true; 6239#fibonacciEXIT >#33#return; 6227#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6230#fibonacciFINAL assume true; 6223#fibonacciEXIT >#31#return; 6210#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6217#$Ultimate##0 ~n := #in~n; 6218#L19 assume !(~n < 1); 6209#L21 assume !(1 == ~n); 6181#L24 call #t~ret4 := fibonacci(~n - 1);< 6380#$Ultimate##0 ~n := #in~n; 6379#L19 assume !(~n < 1); 6385#L21 assume !(1 == ~n); 6179#L24 [2024-10-31 21:58:19,994 INFO L747 eck$LassoCheckResult]: Loop: 6179#L24 call #t~ret4 := fibonacci(~n - 1);< 6183#$Ultimate##0 ~n := #in~n; 6376#L19 assume !(~n < 1); 6193#L21 assume !(1 == ~n); 6185#L24 call #t~ret4 := fibonacci(~n - 1);< 6183#$Ultimate##0 ~n := #in~n; 6376#L19 assume !(~n < 1); 6193#L21 assume !(1 == ~n); 6185#L24 call #t~ret4 := fibonacci(~n - 1);< 6183#$Ultimate##0 ~n := #in~n; 6376#L19 assume !(~n < 1); 6193#L21 assume !(1 == ~n); 6185#L24 call #t~ret4 := fibonacci(~n - 1);< 6183#$Ultimate##0 ~n := #in~n; 6377#L19 assume !(~n < 1); 6191#L21 assume 1 == ~n;#res := 1; 6192#fibonacciFINAL assume true; 6184#fibonacciEXIT >#31#return; 6186#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6196#$Ultimate##0 ~n := #in~n; 6408#L19 assume ~n < 1;#res := 0; 6406#fibonacciFINAL assume true; 6403#fibonacciEXIT >#33#return; 6399#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6397#fibonacciFINAL assume true; 6393#fibonacciEXIT >#31#return; 6389#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6390#$Ultimate##0 ~n := #in~n; 6396#L19 assume !(~n < 1); 6392#L21 assume 1 == ~n;#res := 1; 6208#fibonacciFINAL assume true; 6388#fibonacciEXIT >#33#return; 6387#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6386#fibonacciFINAL assume true; 6384#fibonacciEXIT >#31#return; 6169#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6383#$Ultimate##0 ~n := #in~n; 6382#L19 assume !(~n < 1); 6381#L21 assume !(1 == ~n); 6177#L24 call #t~ret4 := fibonacci(~n - 1);< 6178#$Ultimate##0 ~n := #in~n; 6199#L19 assume !(~n < 1); 6200#L21 assume 1 == ~n;#res := 1; 6409#fibonacciFINAL assume true; 6407#fibonacciEXIT >#31#return; 6401#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6402#$Ultimate##0 ~n := #in~n; 6405#L19 assume ~n < 1;#res := 0; 6404#fibonacciFINAL assume true; 6400#fibonacciEXIT >#33#return; 6166#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6170#fibonacciFINAL assume true; 6398#fibonacciEXIT >#33#return; 6395#L24-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6394#fibonacciFINAL assume true; 6391#fibonacciEXIT >#31#return; 6167#L24-1 call #t~ret5 := fibonacci(~n - 2);< 6340#$Ultimate##0 ~n := #in~n; 6336#L19 assume !(~n < 1); 6207#L21 assume !(1 == ~n); 6180#L24 call #t~ret4 := fibonacci(~n - 1);< 6378#$Ultimate##0 ~n := #in~n; 6379#L19 assume !(~n < 1); 6385#L21 assume !(1 == ~n); 6179#L24 [2024-10-31 21:58:19,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:19,994 INFO L85 PathProgramCache]: Analyzing trace with hash -574425709, now seen corresponding path program 5 times [2024-10-31 21:58:19,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:19,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114387965] [2024-10-31 21:58:19,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:19,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:20,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:20,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:20,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1674904719, now seen corresponding path program 3 times [2024-10-31 21:58:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:20,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820105735] [2024-10-31 21:58:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:20,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:20,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 21:58:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 21:58:20,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 21:58:20,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:20,065 INFO L85 PathProgramCache]: Analyzing trace with hash -962434527, now seen corresponding path program 6 times [2024-10-31 21:58:20,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 21:58:20,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003336771] [2024-10-31 21:58:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 21:58:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 21:58:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-31 21:58:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 21:58:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-31 21:58:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-31 21:58:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-31 21:58:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-31 21:58:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 21:58:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-31 21:58:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 267 proven. 348 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2024-10-31 21:58:20,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 21:58:20,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003336771] [2024-10-31 21:58:20,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003336771] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 21:58:20,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880403016] [2024-10-31 21:58:20,744 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-31 21:58:20,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 21:58:20,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:20,746 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 21:58:20,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-10-31 21:58:20,853 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-10-31 21:58:20,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 21:58:20,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-31 21:58:20,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:20,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 254 proven. 243 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2024-10-31 21:58:20,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 21:58:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 255 proven. 249 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2024-10-31 21:58:21,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880403016] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 21:58:21,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 21:58:21,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 16] total 28 [2024-10-31 21:58:21,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744208050] [2024-10-31 21:58:21,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 21:58:22,216 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:22,216 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:22,217 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:22,217 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:22,217 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-31 21:58:22,217 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,217 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:22,217 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:22,217 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration7_Loop [2024-10-31 21:58:22,217 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:22,217 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:22,218 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,220 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,223 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,229 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,269 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:22,269 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-31 21:58:22,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:22,272 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:22,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2024-10-31 21:58:22,273 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:22,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:22,286 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:22,286 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=0} Honda state: {fibonacci_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:22,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2024-10-31 21:58:22,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:22,301 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:22,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2024-10-31 21:58:22,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:22,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:22,315 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-31 21:58:22,315 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#in~n=2} Honda state: {fibonacci_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-31 21:58:22,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2024-10-31 21:58:22,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:22,329 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:22,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2024-10-31 21:58:22,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-31 21:58:22,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:22,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2024-10-31 21:58:22,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:22,357 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:22,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2024-10-31 21:58:22,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-31 21:58:22,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-31 21:58:22,373 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-31 21:58:22,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2024-10-31 21:58:22,385 INFO L204 LassoAnalysis]: Preferences: [2024-10-31 21:58:22,385 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-31 21:58:22,385 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-31 21:58:22,385 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-31 21:58:22,385 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-31 21:58:22,385 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,385 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-31 21:58:22,385 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-31 21:58:22,386 INFO L132 ssoRankerPreferences]: Filename of dumped script: Fibonacci04.c_Iteration7_Loop [2024-10-31 21:58:22,386 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-31 21:58:22,386 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-31 21:58:22,386 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,388 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,390 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,398 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,400 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-31 21:58:22,427 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-31 21:58:22,427 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-31 21:58:22,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:22,428 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:22,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2024-10-31 21:58:22,429 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:22,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:22,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:22,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:22,440 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:22,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:22,441 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:22,441 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:22,442 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:22,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2024-10-31 21:58:22,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:22,456 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:22,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2024-10-31 21:58:22,457 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:22,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:22,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:22,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:22,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:22,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:22,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:22,472 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:22,474 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-31 21:58:22,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2024-10-31 21:58:22,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:22,487 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:22,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2024-10-31 21:58:22,489 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-31 21:58:22,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-31 21:58:22,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-31 21:58:22,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-31 21:58:22,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-31 21:58:22,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-31 21:58:22,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-31 21:58:22,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-31 21:58:22,503 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-31 21:58:22,508 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-31 21:58:22,508 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2024-10-31 21:58:22,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 21:58:22,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 21:58:22,511 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 21:58:22,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2024-10-31 21:58:22,513 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-31 21:58:22,513 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-31 21:58:22,513 INFO L474 LassoAnalysis]: Proved termination. [2024-10-31 21:58:22,513 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2024-10-31 21:58:22,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2024-10-31 21:58:22,525 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-31 21:58:22,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:22,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-31 21:58:22,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:23,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41ad8b99-f35e-44df-a5cc-6722edb24c53/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2024-10-31 21:58:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:23,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-31 21:58:23,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 39 proven. 129 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-31 21:58:23,676 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 12 loop predicates [2024-10-31 21:58:23,677 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 250 states and 328 transitions. cyclomatic complexity: 82 Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:58:24,156 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 250 states and 328 transitions. cyclomatic complexity: 82. Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Result 746 states and 965 transitions. Complement of second has 75 states. [2024-10-31 21:58:24,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:58:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 50 transitions. [2024-10-31 21:58:24,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 50 transitions. Stem has 70 letters. Loop has 64 letters. [2024-10-31 21:58:24,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:24,159 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:58:24,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:24,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-31 21:58:24,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:24,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-31 21:58:24,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:25,275 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 39 proven. 129 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-31 21:58:25,275 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2024-10-31 21:58:25,276 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 250 states and 328 transitions. cyclomatic complexity: 82 Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:58:25,874 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 250 states and 328 transitions. cyclomatic complexity: 82. Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Result 750 states and 971 transitions. Complement of second has 79 states. [2024-10-31 21:58:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:25,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:58:25,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 53 transitions. [2024-10-31 21:58:25,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 53 transitions. Stem has 70 letters. Loop has 64 letters. [2024-10-31 21:58:25,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:25,877 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:58:25,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:25,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-31 21:58:25,985 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:26,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-31 21:58:26,735 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 39 proven. 129 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-31 21:58:27,139 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 12 loop predicates [2024-10-31 21:58:27,140 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 250 states and 328 transitions. cyclomatic complexity: 82 Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:58:27,654 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 250 states and 328 transitions. cyclomatic complexity: 82. Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Result 135 states and 140 transitions. Complement of second has 59 states. [2024-10-31 21:58:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:58:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 53 transitions. [2024-10-31 21:58:27,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 53 transitions. Stem has 70 letters. Loop has 64 letters. [2024-10-31 21:58:27,659 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:27,659 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:58:27,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:27,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-31 21:58:27,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:28,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-31 21:58:28,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:29,170 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 39 proven. 129 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-31 21:58:29,171 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 12 loop predicates [2024-10-31 21:58:29,171 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 250 states and 328 transitions. cyclomatic complexity: 82 Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:58:29,941 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 250 states and 328 transitions. cyclomatic complexity: 82. Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Result 151 states and 161 transitions. Complement of second has 63 states. [2024-10-31 21:58:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2024-10-31 21:58:29,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:58:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 60 transitions. [2024-10-31 21:58:29,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 60 transitions. Stem has 70 letters. Loop has 64 letters. [2024-10-31 21:58:29,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-31 21:58:29,945 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-31 21:58:29,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 21:58:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:30,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-31 21:58:30,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 21:58:30,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-31 21:58:30,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 21:58:31,019 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 39 proven. 129 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-10-31 21:58:31,019 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.2 stem predicates 12 loop predicates [2024-10-31 21:58:31,020 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 250 states and 328 transitions. cyclomatic complexity: 82 Second operand has 14 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 10 states have call successors, (15), 5 states have call predecessors, (15), 6 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2024-10-31 21:58:31,157 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,158 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,166 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,167 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,168 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,201 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,202 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,202 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,203 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,206 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,207 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,212 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,213 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,221 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,222 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,223 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,224 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,227 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,229 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,229 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,231 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,231 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,232 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,232 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,233 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,233 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,234 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,235 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,236 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,239 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,241 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,246 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,247 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,248 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,249 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,250 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,252 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,253 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,254 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,255 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,255 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,256 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,257 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,258 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,258 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,283 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,284 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,286 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,290 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,291 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,291 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,292 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,292 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,293 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,294 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,295 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,296 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,297 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,298 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,299 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,299 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,299 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,300 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,301 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,302 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,303 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,307 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,308 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,316 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,317 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,318 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,321 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,321 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,322 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,322 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,323 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,323 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,324 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,325 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,326 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,328 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,329 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,329 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,330 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,330 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,332 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,377 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,394 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,395 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,403 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,404 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,405 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,406 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,406 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,408 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,411 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,415 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,428 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,428 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,435 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,437 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,438 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,439 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,440 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,441 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,444 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,445 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,445 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,446 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,448 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,448 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,453 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,454 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,457 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,458 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,459 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,460 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,461 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,461 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,462 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,463 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,463 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,464 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,464 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,465 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,467 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,468 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,473 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,477 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,478 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,478 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,479 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,479 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,480 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,481 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,482 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,483 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,484 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,486 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,486 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,486 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,487 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,488 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,489 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,490 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,491 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,493 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,494 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,509 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,511 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,512 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,513 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,513 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,514 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,517 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,519 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,521 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,522 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,637 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,638 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,638 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,639 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,640 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,640 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,641 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,641 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,668 WARN L278 uchiComplementFKVNwa]: big16 [2024-10-31 21:58:31,668 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,669 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,669 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,670 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,671 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,673 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,680 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,682 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,684 WARN L278 uchiComplementFKVNwa]: big8 [2024-10-31 21:58:31,687 WARN L278 uchiComplementFKVNwa]: big8