./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx --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 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:26:35,114 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:26:35,223 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-21 22:26:35,229 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:26:35,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:26:35,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:26:35,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:26:35,259 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:26:35,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:26:35,265 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:26:35,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:26:35,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:26:35,268 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:26:35,270 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 22:26:35,271 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 22:26:35,271 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 22:26:35,271 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 22:26:35,272 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 22:26:35,272 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 22:26:35,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:26:35,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 22:26:35,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:26:35,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:26:35,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:26:35,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:26:35,275 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 22:26:35,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 22:26:35,276 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 22:26:35,276 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:26:35,277 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:26:35,277 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:26:35,277 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 22:26:35,278 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:26:35,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:26:35,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:26:35,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:26:35,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:26:35,280 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 22:26:35,280 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_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2023-11-21 22:26:35,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:26:35,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:26:35,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:26:35,711 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:26:35,713 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:26:35,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2023-11-21 22:26:38,878 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:26:39,132 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:26:39,134 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2023-11-21 22:26:39,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/data/851e2b9ac/99eb451554fb4a35b3dee0dc3a1e9a0f/FLAG9eaa96734 [2023-11-21 22:26:39,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/data/851e2b9ac/99eb451554fb4a35b3dee0dc3a1e9a0f [2023-11-21 22:26:39,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:26:39,168 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:26:39,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:39,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:26:39,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:26:39,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59bd0f24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39, skipping insertion in model container [2023-11-21 22:26:39,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,202 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:26:39,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:39,369 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:26:39,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:26:39,404 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:26:39,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39 WrapperNode [2023-11-21 22:26:39,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:26:39,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:39,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:26:39,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:26:39,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,438 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-21 22:26:39,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:26:39,440 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:26:39,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:26:39,441 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:26:39,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,458 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,470 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:26:39,470 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,473 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:26:39,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:26:39,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:26:39,481 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:26:39,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (1/1) ... [2023-11-21 22:26:39,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:39,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:39,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:39,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 22:26:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:26:39,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:26:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-21 22:26:39,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-21 22:26:39,586 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-21 22:26:39,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-21 22:26:39,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:26:39,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:26:39,685 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:26:39,688 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:26:39,917 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:26:39,963 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:26:39,963 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:26:39,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:39 BoogieIcfgContainer [2023-11-21 22:26:39,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:26:39,970 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 22:26:39,970 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 22:26:39,975 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 22:26:39,976 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:26:39,976 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 10:26:39" (1/3) ... [2023-11-21 22:26:39,977 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a0286e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:26:39, skipping insertion in model container [2023-11-21 22:26:39,977 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:26:39,978 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:26:39" (2/3) ... [2023-11-21 22:26:39,978 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a0286e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 10:26:39, skipping insertion in model container [2023-11-21 22:26:39,978 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 22:26:39,978 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:39" (3/3) ... [2023-11-21 22:26:39,980 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-1.c [2023-11-21 22:26:40,075 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 22:26:40,075 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 22:26:40,075 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 22:26:40,075 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 22:26:40,075 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 22:26:40,076 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 22:26:40,076 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 22:26:40,076 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 22:26:40,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-21 22:26:40,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-21 22:26:40,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:40,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:40,116 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-21 22:26:40,116 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:40,116 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 22:26:40,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-21 22:26:40,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-21 22:26:40,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:40,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:40,126 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-21 22:26:40,126 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:40,135 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-21 22:26:40,136 INFO L750 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2023-11-21 22:26:40,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:40,143 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-21 22:26:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:40,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617427429] [2023-11-21 22:26:40,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:40,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:40,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:40,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:40,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:40,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-21 22:26:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:40,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128441932] [2023-11-21 22:26:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:40,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:40,322 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:40,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:40,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-21 22:26:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:40,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429781023] [2023-11-21 22:26:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:40,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:40,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:40,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:40,669 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:26:40,670 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:26:40,670 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:26:40,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:26:40,671 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 22:26:40,671 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:40,671 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:26:40,671 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:26:40,672 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2023-11-21 22:26:40,672 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:26:40,672 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:26:40,692 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:40,703 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:40,706 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:40,710 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:40,714 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:40,717 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:40,720 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:40,724 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:40,807 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:26:40,808 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 22:26:40,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:40,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:40,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:40,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-21 22:26:40,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:40,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:40,856 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:40,856 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:40,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:40,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:40,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:40,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:40,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:40,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:40,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-21 22:26:40,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:40,924 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:40,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:40,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:40,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:40,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:40,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:40,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:40,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-21 22:26:40,984 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:40,984 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:41,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,018 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:41,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:41,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-21 22:26:41,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:41,051 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:41,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,080 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:41,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:41,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-21 22:26:41,119 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:41,120 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:41,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:41,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:41,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-21 22:26:41,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:41,196 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:41,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,223 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:41,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:41,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-21 22:26:41,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:41,264 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:41,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,291 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:41,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:41,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-21 22:26:41,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 22:26:41,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:41,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-21 22:26:41,459 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 22:26:41,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,473 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:26:41,473 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:26:41,473 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:26:41,473 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:26:41,473 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 22:26:41,473 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:26:41,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:26:41,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2023-11-21 22:26:41,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:26:41,474 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:26:41,476 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:41,483 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:41,488 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:41,492 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:41,495 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:41,497 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:41,512 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:41,515 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:41,590 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:26:41,596 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 22:26:41,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,614 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 [2023-11-21 22:26:41,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:41,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:41,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:41,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:41,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:41,630 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:41,630 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:41,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-21 22:26:41,640 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:41,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,660 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,664 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 [2023-11-21 22:26:41,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-21 22:26:41,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:41,676 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:41,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:41,676 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:41,676 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:41,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:41,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:41,687 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:41,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,713 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,719 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 [2023-11-21 22:26:41,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-21 22:26:41,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:41,732 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:41,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:41,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:41,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:41,733 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:41,733 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:41,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:41,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,772 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,774 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 22:26:41,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:41,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:41,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:41,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:41,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:41,789 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:41,789 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:41,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-21 22:26:41,799 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:41,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,830 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 [2023-11-21 22:26:41,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:41,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:41,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:41,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:41,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:41,844 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:41,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:41,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-21 22:26:41,855 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:41,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:41,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,881 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,888 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 [2023-11-21 22:26:41,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:41,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:41,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:41,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:41,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:41,903 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:41,903 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:41,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-21 22:26:41,922 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 22:26:41,927 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 22:26:41,928 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-21 22:26:41,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:41,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:41,977 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:41,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-21 22:26:41,986 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 22:26:41,988 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 22:26:41,988 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 22:26:41,988 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-21 22:26:42,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:42,018 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 22:26:42,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:42,087 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:26:42,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:42,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:26:42,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:42,276 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2023-11-21 22:26:42,278 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:42,495 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 85 states and 117 transitions. Complement of second has 24 states. [2023-11-21 22:26:42,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-21 22:26:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:26:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-21 22:26:42,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-21 22:26:42,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:42,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-21 22:26:42,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:42,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-21 22:26:42,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:42,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-21 22:26:42,524 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-21 22:26:42,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-21 22:26:42,544 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-21 22:26:42,544 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-21 22:26:42,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-21 22:26:42,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:42,546 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-21 22:26:42,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-21 22:26:42,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-21 22:26:42,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-21 22:26:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-21 22:26:42,595 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-21 22:26:42,596 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-21 22:26:42,596 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-21 22:26:42,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-21 22:26:42,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-21 22:26:42,599 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:42,599 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:42,602 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:42,602 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:42,602 INFO L748 eck$LassoCheckResult]: Stem: 236#$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(18, 2);call #Ultimate.allocInit(12, 3); 223#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 218#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 217#$Ultimate##0 ~n := #in~n; 219#L10 assume !(~n < 1); 229#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 233#$Ultimate##0 ~n := #in~n; 247#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 220#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-21 22:26:42,602 INFO L750 eck$LassoCheckResult]: Loop: 211#L25-1 call #t~ret7 := fibo1(~n - 2);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume !(~n < 1); 243#L12 assume !(1 == ~n); 212#L15 call #t~ret4 := fibo2(~n - 1);< 225#$Ultimate##0 ~n := #in~n; 245#L20 assume !(~n < 1); 246#L22 assume !(1 == ~n); 224#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#48#return; 211#L25-1 [2023-11-21 22:26:42,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-21 22:26:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:42,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619616409] [2023-11-21 22:26:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:26:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:26:42,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619616409] [2023-11-21 22:26:42,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619616409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:42,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:42,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113124535] [2023-11-21 22:26:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:42,838 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 22:26:42,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:42,839 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-21 22:26:42,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:42,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412946883] [2023-11-21 22:26:42,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:42,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:26:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:26:42,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:42,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412946883] [2023-11-21 22:26:42,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412946883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:26:42,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:26:42,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:26:42,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357315258] [2023-11-21 22:26:42,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:26:42,932 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:26:42,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:26:42,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:26:42,938 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:26:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:43,013 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-21 22:26:43,013 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-21 22:26:43,017 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-21 22:26:43,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-21 22:26:43,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-21 22:26:43,021 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-21 22:26:43,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-21 22:26:43,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:43,021 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-21 22:26:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-21 22:26:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-21 22:26:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-21 22:26:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-21 22:26:43,031 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-21 22:26:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:26:43,032 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-21 22:26:43,033 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-21 22:26:43,033 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-21 22:26:43,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-21 22:26:43,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:43,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:43,036 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:43,036 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:43,036 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$Ultimate##0 ~n := #in~n; 367#L10 assume !(~n < 1); 395#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 379#$Ultimate##0 ~n := #in~n; 396#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 368#$Ultimate##0 ~n := #in~n; 370#L10 assume !(~n < 1); 373#L12 assume 1 == ~n;#res := 1; 374#fibo1FINAL assume true; 386#fibo1EXIT >#48#return; 355#L25-1 [2023-11-21 22:26:43,037 INFO L750 eck$LassoCheckResult]: Loop: 355#L25-1 call #t~ret7 := fibo1(~n - 2);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume !(1 == ~n); 361#L15 call #t~ret4 := fibo2(~n - 1);< 392#$Ultimate##0 ~n := #in~n; 391#L20 assume !(~n < 1); 389#L22 assume !(1 == ~n); 356#L25 call #t~ret6 := fibo1(~n - 1);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 384#fibo1FINAL assume true; 385#fibo1EXIT >#48#return; 355#L25-1 [2023-11-21 22:26:43,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:43,037 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-21 22:26:43,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:43,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557867027] [2023-11-21 22:26:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:43,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:26:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:43,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:43,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557867027] [2023-11-21 22:26:43,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557867027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:43,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303655167] [2023-11-21 22:26:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:43,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:43,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:43,216 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:43,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-21 22:26:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:43,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:26:43,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:43,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:43,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303655167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:43,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:43,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-21 22:26:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652315155] [2023-11-21 22:26:43,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:43,529 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 22:26:43,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-21 22:26:43,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:43,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353171473] [2023-11-21 22:26:43,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:43,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:43,552 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:43,567 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:43,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:43,872 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:26:43,873 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:26:43,873 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:26:43,873 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:26:43,873 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 22:26:43,873 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:43,873 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:26:43,873 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:26:43,873 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2023-11-21 22:26:43,874 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:26:43,874 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:26:43,875 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:43,879 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:43,881 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:43,884 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:43,887 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:43,891 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:43,898 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:43,901 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:43,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:43,977 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:26:43,977 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 22:26:43,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:43,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:43,980 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:43,989 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:43,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:44,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-21 22:26:44,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:44,013 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:44,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,033 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-21 22:26:44,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:44,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:44,049 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:44,049 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:44,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,069 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-21 22:26:44,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:44,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:44,083 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:44,083 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:44,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,104 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-21 22:26:44,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:44,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:44,124 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:44,124 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:44,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,149 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-21 22:26:44,150 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:44,150 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:44,162 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:44,162 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:44,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-21 22:26:44,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,181 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:44,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:44,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-21 22:26:44,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-21 22:26:44,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,216 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-21 22:26:44,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 22:26:44,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:44,267 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 22:26:44,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,290 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:26:44,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:26:44,291 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:26:44,291 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:26:44,291 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 22:26:44,291 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,291 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:26:44,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:26:44,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2023-11-21 22:26:44,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:26:44,291 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:26:44,292 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:44,296 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:44,298 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:44,302 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:44,304 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:44,311 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:44,315 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:44,318 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:44,321 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:44,374 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:26:44,374 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 22:26:44,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,375 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-21 22:26:44,386 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 [2023-11-21 22:26:44,399 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:44,399 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:44,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:44,400 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:44,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:44,402 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:44,402 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:44,415 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:44,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,437 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,444 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 [2023-11-21 22:26:44,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-21 22:26:44,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:44,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:44,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:44,458 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:44,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:44,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:44,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:44,479 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:44,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,498 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,504 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 [2023-11-21 22:26:44,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:44,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:44,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:44,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:44,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:44,517 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:44,517 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:44,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-21 22:26:44,531 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:44,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,551 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,556 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 [2023-11-21 22:26:44,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-21 22:26:44,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:44,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:44,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:44,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:44,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:44,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:44,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:44,587 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:44,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,608 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,612 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 [2023-11-21 22:26:44,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-21 22:26:44,627 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:44,627 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:44,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:44,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:44,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:44,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:44,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:44,643 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 22:26:44,649 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 22:26:44,649 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-21 22:26:44,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:44,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:44,653 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:44,654 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 22:26:44,654 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 22:26:44,654 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 22:26:44,654 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-21 22:26:44,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-21 22:26:44,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:44,678 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 22:26:44,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:44,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:26:44,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:44,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-21 22:26:44,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:45,018 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-21 22:26:45,018 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:26:45,572 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2023-11-21 22:26:45,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-21 22:26:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:26:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-21 22:26:45,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-21 22:26:45,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:45,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-21 22:26:45,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:45,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-21 22:26:45,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:45,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-21 22:26:45,605 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-21 22:26:45,613 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-21 22:26:45,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-21 22:26:45,620 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-21 22:26:45,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-21 22:26:45,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:45,625 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-21 22:26:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-21 22:26:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-21 22:26:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2023-11-21 22:26:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-21 22:26:45,665 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-21 22:26:45,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 22:26:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:26:45,667 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:26:45,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:45,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:45,986 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2023-11-21 22:26:45,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2023-11-21 22:26:45,998 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-21 22:26:46,015 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2023-11-21 22:26:46,015 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2023-11-21 22:26:46,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2023-11-21 22:26:46,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2023-11-21 22:26:46,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:46,018 INFO L218 hiAutomatonCegarLoop]: Abstraction has 204 states and 272 transitions. [2023-11-21 22:26:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2023-11-21 22:26:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2023-11-21 22:26:46,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 120 states have (on average 1.225) internal successors, (147), 129 states have internal predecessors, (147), 44 states have call successors, (46), 24 states have call predecessors, (46), 28 states have return successors, (64), 38 states have call predecessors, (64), 42 states have call successors, (64) [2023-11-21 22:26:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2023-11-21 22:26:46,036 INFO L240 hiAutomatonCegarLoop]: Abstraction has 192 states and 257 transitions. [2023-11-21 22:26:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:26:46,037 INFO L428 stractBuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2023-11-21 22:26:46,037 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-21 22:26:46,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2023-11-21 22:26:46,040 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-21 22:26:46,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:46,040 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:46,042 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:46,042 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:46,042 INFO L748 eck$LassoCheckResult]: Stem: 1313#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1276#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 1277#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1316#$Ultimate##0 ~n := #in~n; 1301#L10 assume !(~n < 1); 1302#L12 assume !(1 == ~n); 1246#L15 call #t~ret4 := fibo2(~n - 1);< 1353#$Ultimate##0 ~n := #in~n; 1352#L20 assume !(~n < 1); 1245#L22 assume !(1 == ~n); 1247#L25 call #t~ret6 := fibo1(~n - 1);< 1274#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1292#L12 assume !(1 == ~n); 1293#L15 call #t~ret4 := fibo2(~n - 1);< 1304#$Ultimate##0 ~n := #in~n; 1425#L20 assume !(~n < 1); 1424#L22 assume !(1 == ~n); 1278#L25 call #t~ret6 := fibo1(~n - 1);< 1346#$Ultimate##0 ~n := #in~n; 1347#L10 assume !(~n < 1); 1355#L12 assume !(1 == ~n); 1356#L15 call #t~ret4 := fibo2(~n - 1);< 1364#$Ultimate##0 ~n := #in~n; 1368#L20 assume ~n < 1;#res := 0; 1367#fibo2FINAL assume true; 1363#fibo2EXIT >#52#return; 1360#L15-1 call #t~ret5 := fibo2(~n - 2);< 1361#$Ultimate##0 ~n := #in~n; 1365#L20 assume ~n < 1;#res := 0; 1362#fibo2FINAL assume true; 1359#fibo2EXIT >#54#return; 1357#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1358#fibo1FINAL assume true; 1423#fibo1EXIT >#48#return; 1255#L25-1 call #t~ret7 := fibo1(~n - 2);< 1345#$Ultimate##0 ~n := #in~n; 1374#L10 assume ~n < 1;#res := 0; 1253#fibo1FINAL assume true; 1256#fibo1EXIT >#50#return; 1422#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1420#fibo2FINAL assume true; 1417#fibo2EXIT >#52#return; 1295#L15-1 call #t~ret5 := fibo2(~n - 2);< 1303#$Ultimate##0 [2023-11-21 22:26:46,042 INFO L750 eck$LassoCheckResult]: Loop: 1303#$Ultimate##0 ~n := #in~n; 1429#L20 assume !(~n < 1); 1430#L22 assume !(1 == ~n); 1272#L25 call #t~ret6 := fibo1(~n - 1);< 1269#$Ultimate##0 ~n := #in~n; 1273#L10 assume !(~n < 1); 1289#L12 assume !(1 == ~n); 1291#L15 call #t~ret4 := fibo2(~n - 1);< 1303#$Ultimate##0 [2023-11-21 22:26:46,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:46,043 INFO L85 PathProgramCache]: Analyzing trace with hash 441703261, now seen corresponding path program 1 times [2023-11-21 22:26:46,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:46,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457060990] [2023-11-21 22:26:46,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:46,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:26:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 22:26:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-21 22:26:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-21 22:26:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457060990] [2023-11-21 22:26:46,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457060990] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:46,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960093056] [2023-11-21 22:26:46,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:46,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:46,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:46,211 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:46,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-21 22:26:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:46,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:26:46,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:26:46,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:26:46,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960093056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:46,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:46,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2023-11-21 22:26:46,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561774554] [2023-11-21 22:26:46,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:46,985 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 22:26:46,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:46,985 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2023-11-21 22:26:46,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:46,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852159752] [2023-11-21 22:26:46,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:46,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:46,992 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:47,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:47,127 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:26:47,127 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:26:47,127 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:26:47,127 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:26:47,127 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 22:26:47,127 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,128 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:26:47,128 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:26:47,128 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration4_Loop [2023-11-21 22:26:47,128 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:26:47,128 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:26:47,129 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,131 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,134 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,136 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,138 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,140 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,142 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,150 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,202 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:26:47,202 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 22:26:47,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,204 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:47,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:47,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-21 22:26:47,228 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:47,228 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:47,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,252 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:47,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:47,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-21 22:26:47,286 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:47,286 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:47,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-11-21 22:26:47,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,310 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-21 22:26:47,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:47,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:47,324 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:47,324 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:47,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,338 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-21 22:26:47,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:47,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:47,353 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:47,353 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:47,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,370 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-21 22:26:47,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:47,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:47,385 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:47,385 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:47,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-21 22:26:47,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,399 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-21 22:26:47,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:47,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:47,415 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:47,415 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:47,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-11-21 22:26:47,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,431 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-21 22:26:47,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:47,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:47,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,469 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-21 22:26:47,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 22:26:47,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:47,563 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 22:26:47,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,568 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:26:47,568 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:26:47,568 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:26:47,568 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:26:47,568 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 22:26:47,568 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,568 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:26:47,568 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:26:47,568 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration4_Loop [2023-11-21 22:26:47,568 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:26:47,568 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:26:47,569 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,576 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,578 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,580 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,584 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,593 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,604 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:47,673 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:26:47,673 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 22:26:47,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,675 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 22:26:47,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-21 22:26:47,691 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:47,691 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:47,692 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:47,692 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:47,692 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:47,692 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:47,693 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:47,707 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:47,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,732 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,734 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 [2023-11-21 22:26:47,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:47,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:47,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:47,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:47,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:47,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:47,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:47,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-21 22:26:47,759 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:47,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,783 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,788 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 [2023-11-21 22:26:47,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:47,800 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:47,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:47,800 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:47,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:47,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:47,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:47,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-21 22:26:47,815 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:47,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,839 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,844 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 [2023-11-21 22:26:47,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:47,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:47,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:47,857 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:47,857 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:47,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:47,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:47,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-21 22:26:47,871 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:47,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,892 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,894 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 [2023-11-21 22:26:47,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:47,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:47,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:47,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:47,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:47,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:47,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:47,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-21 22:26:47,923 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:47,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,942 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,946 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 [2023-11-21 22:26:47,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:47,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:47,958 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:47,958 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:47,958 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:47,959 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:47,960 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:47,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-21 22:26:47,971 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:47,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:47,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:47,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:47,991 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:47,993 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 [2023-11-21 22:26:48,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:48,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:48,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:48,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:48,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:48,006 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:48,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:48,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-21 22:26:48,019 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 22:26:48,033 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 22:26:48,033 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-21 22:26:48,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:48,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:48,039 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:48,041 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 22:26:48,041 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 22:26:48,041 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 22:26:48,041 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-21 22:26:48,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-21 22:26:48,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:48,053 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 22:26:48,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:48,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-21 22:26:48,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:48,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:26:48,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:48,622 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-21 22:26:48,622 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:26:48,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:48,854 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2023-11-21 22:26:48,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-21 22:26:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:26:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-21 22:26:48,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-21 22:26:48,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:48,857 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 22:26:48,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:48,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-21 22:26:48,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:49,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:26:49,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:49,337 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-21 22:26:49,337 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:26:49,521 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2023-11-21 22:26:49,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-21 22:26:49,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:26:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-21 22:26:49,524 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-21 22:26:49,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:49,525 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 22:26:49,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:49,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-21 22:26:49,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:49,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:26:49,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:50,038 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 5 loop predicates [2023-11-21 22:26:50,039 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:26:50,228 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 587 states and 803 transitions. Complement of second has 25 states. [2023-11-21 22:26:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-21 22:26:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:26:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-21 22:26:50,231 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-21 22:26:50,231 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:50,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2023-11-21 22:26:50,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:50,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2023-11-21 22:26:50,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:50,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2023-11-21 22:26:50,244 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-21 22:26:50,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2023-11-21 22:26:50,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2023-11-21 22:26:50,254 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2023-11-21 22:26:50,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2023-11-21 22:26:50,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:50,256 INFO L218 hiAutomatonCegarLoop]: Abstraction has 476 states and 676 transitions. [2023-11-21 22:26:50,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2023-11-21 22:26:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2023-11-21 22:26:50,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 290 states have internal predecessors, (337), 78 states have call successors, (81), 60 states have call predecessors, (81), 56 states have return successors, (126), 50 states have call predecessors, (126), 76 states have call successors, (126) [2023-11-21 22:26:50,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2023-11-21 22:26:50,308 INFO L240 hiAutomatonCegarLoop]: Abstraction has 401 states and 544 transitions. [2023-11-21 22:26:50,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-21 22:26:50,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-21 22:26:50,310 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 16 states have call successors, (21), 7 states have call predecessors, (21), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-21 22:26:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:50,871 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2023-11-21 22:26:50,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2023-11-21 22:26:50,880 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-21 22:26:50,888 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2023-11-21 22:26:50,888 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2023-11-21 22:26:50,889 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2023-11-21 22:26:50,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2023-11-21 22:26:50,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:50,889 INFO L218 hiAutomatonCegarLoop]: Abstraction has 457 states and 645 transitions. [2023-11-21 22:26:50,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2023-11-21 22:26:50,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2023-11-21 22:26:50,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 269 states have (on average 1.20817843866171) internal successors, (325), 298 states have internal predecessors, (325), 85 states have call successors, (87), 57 states have call predecessors, (87), 60 states have return successors, (161), 58 states have call predecessors, (161), 83 states have call successors, (161) [2023-11-21 22:26:50,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2023-11-21 22:26:50,925 INFO L240 hiAutomatonCegarLoop]: Abstraction has 414 states and 573 transitions. [2023-11-21 22:26:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-21 22:26:50,926 INFO L428 stractBuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2023-11-21 22:26:50,926 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-21 22:26:50,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2023-11-21 22:26:50,930 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-21 22:26:50,930 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:50,930 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:50,935 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:50,935 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [12, 11, 10, 10, 9, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2] [2023-11-21 22:26:50,935 INFO L748 eck$LassoCheckResult]: Stem: 5357#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5323#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 5324#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5364#$Ultimate##0 ~n := #in~n; 5411#L10 assume !(~n < 1); 5410#L12 assume !(1 == ~n); 5406#L15 call #t~ret4 := fibo2(~n - 1);< 5409#$Ultimate##0 ~n := #in~n; 5408#L20 assume !(~n < 1); 5407#L22 assume !(1 == ~n); 5402#L25 call #t~ret6 := fibo1(~n - 1);< 5405#$Ultimate##0 ~n := #in~n; 5404#L10 assume !(~n < 1); 5403#L12 assume !(1 == ~n); 5398#L15 call #t~ret4 := fibo2(~n - 1);< 5401#$Ultimate##0 ~n := #in~n; 5400#L20 assume !(~n < 1); 5399#L22 assume !(1 == ~n); 5394#L25 call #t~ret6 := fibo1(~n - 1);< 5397#$Ultimate##0 ~n := #in~n; 5396#L10 assume !(~n < 1); 5395#L12 assume !(1 == ~n); 5379#L15 call #t~ret4 := fibo2(~n - 1);< 5377#$Ultimate##0 ~n := #in~n; 5387#L20 assume !(~n < 1); 5388#L22 assume !(1 == ~n); 5331#L25 call #t~ret6 := fibo1(~n - 1);< 5389#$Ultimate##0 ~n := #in~n; 5390#L10 assume !(~n < 1); 5507#L12 assume 1 == ~n;#res := 1; 5508#fibo1FINAL assume true; 5495#fibo1EXIT >#48#return; 5467#L25-1 call #t~ret7 := fibo1(~n - 2);< 5490#$Ultimate##0 ~n := #in~n; 5473#L10 assume !(~n < 1); 5474#L12 assume !(1 == ~n); 5461#L15 call #t~ret4 := fibo2(~n - 1);< 5465#$Ultimate##0 ~n := #in~n; 5464#L20 assume !(~n < 1); 5462#L22 assume 1 == ~n;#res := 1; 5463#fibo2FINAL assume true; 5601#fibo2EXIT >#52#return; 5522#L15-1 [2023-11-21 22:26:50,936 INFO L750 eck$LassoCheckResult]: Loop: 5522#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5302#L20 assume !(~n < 1); 5517#L22 assume !(1 == ~n); 5523#L25 call #t~ret6 := fibo1(~n - 1);< 5577#$Ultimate##0 ~n := #in~n; 5524#L10 assume !(~n < 1); 5525#L12 assume 1 == ~n;#res := 1; 5608#fibo1FINAL assume true; 5620#fibo1EXIT >#48#return; 5571#L25-1 call #t~ret7 := fibo1(~n - 2);< 5619#$Ultimate##0 ~n := #in~n; 5618#L10 assume !(~n < 1); 5617#L12 assume !(1 == ~n); 5298#L15 call #t~ret4 := fibo2(~n - 1);< 5297#$Ultimate##0 ~n := #in~n; 5302#L20 assume !(~n < 1); 5517#L22 assume !(1 == ~n); 5523#L25 call #t~ret6 := fibo1(~n - 1);< 5577#$Ultimate##0 ~n := #in~n; 5524#L10 assume !(~n < 1); 5525#L12 assume !(1 == ~n); 5300#L15 call #t~ret4 := fibo2(~n - 1);< 5297#$Ultimate##0 ~n := #in~n; 5302#L20 assume !(~n < 1); 5517#L22 assume !(1 == ~n); 5523#L25 call #t~ret6 := fibo1(~n - 1);< 5577#$Ultimate##0 ~n := #in~n; 5524#L10 assume !(~n < 1); 5525#L12 assume 1 == ~n;#res := 1; 5608#fibo1FINAL assume true; 5620#fibo1EXIT >#48#return; 5571#L25-1 call #t~ret7 := fibo1(~n - 2);< 5619#$Ultimate##0 ~n := #in~n; 5618#L10 assume !(~n < 1); 5617#L12 assume !(1 == ~n); 5298#L15 call #t~ret4 := fibo2(~n - 1);< 5297#$Ultimate##0 ~n := #in~n; 5301#L20 assume !(~n < 1); 5606#L22 assume !(1 == ~n); 5604#L25 call #t~ret6 := fibo1(~n - 1);< 5641#$Ultimate##0 ~n := #in~n; 5644#L10 assume !(~n < 1); 5643#L12 assume 1 == ~n;#res := 1; 5642#fibo1FINAL assume true; 5640#fibo1EXIT >#48#return; 5637#L25-1 call #t~ret7 := fibo1(~n - 2);< 5638#$Ultimate##0 ~n := #in~n; 5653#L10 assume ~n < 1;#res := 0; 5652#fibo1FINAL assume true; 5636#fibo1EXIT >#50#return; 5566#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5632#fibo2FINAL assume true; 5596#fibo2EXIT >#52#return; 5522#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5530#L20 assume ~n < 1;#res := 0; 5598#fibo2FINAL assume true; 5597#fibo2EXIT >#54#return; 5546#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5639#fibo1FINAL assume true; 5635#fibo1EXIT >#50#return; 5566#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5632#fibo2FINAL assume true; 5596#fibo2EXIT >#52#return; 5519#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5530#L20 assume ~n < 1;#res := 0; 5598#fibo2FINAL assume true; 5597#fibo2EXIT >#54#return; 5544#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5592#fibo1FINAL assume true; 5575#fibo1EXIT >#48#return; 5562#L25-1 call #t~ret7 := fibo1(~n - 2);< 5568#$Ultimate##0 ~n := #in~n; 5614#L10 assume !(~n < 1); 5611#L12 assume !(1 == ~n); 5555#L15 call #t~ret4 := fibo2(~n - 1);< 5572#$Ultimate##0 ~n := #in~n; 5587#L20 assume !(~n < 1); 5583#L22 assume !(1 == ~n); 5565#L25 call #t~ret6 := fibo1(~n - 1);< 5568#$Ultimate##0 ~n := #in~n; 5614#L10 assume !(~n < 1); 5611#L12 assume 1 == ~n;#res := 1; 5610#fibo1FINAL assume true; 5616#fibo1EXIT >#48#return; 5560#L25-1 call #t~ret7 := fibo1(~n - 2);< 5615#$Ultimate##0 ~n := #in~n; 5612#L10 assume !(~n < 1); 5609#L12 assume !(1 == ~n); 5556#L15 call #t~ret4 := fibo2(~n - 1);< 5572#$Ultimate##0 ~n := #in~n; 5587#L20 assume !(~n < 1); 5583#L22 assume !(1 == ~n); 5565#L25 call #t~ret6 := fibo1(~n - 1);< 5568#$Ultimate##0 ~n := #in~n; 5614#L10 assume !(~n < 1); 5611#L12 assume 1 == ~n;#res := 1; 5610#fibo1FINAL assume true; 5616#fibo1EXIT >#48#return; 5560#L25-1 call #t~ret7 := fibo1(~n - 2);< 5615#$Ultimate##0 ~n := #in~n; 5612#L10 assume ~n < 1;#res := 0; 5613#fibo1FINAL assume true; 5559#fibo1EXIT >#50#return; 5566#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5632#fibo2FINAL assume true; 5596#fibo2EXIT >#52#return; 5522#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5530#L20 assume ~n < 1;#res := 0; 5598#fibo2FINAL assume true; 5597#fibo2EXIT >#54#return; 5546#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5639#fibo1FINAL assume true; 5635#fibo1EXIT >#50#return; 5566#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5632#fibo2FINAL assume true; 5596#fibo2EXIT >#52#return; 5519#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#$Ultimate##0 ~n := #in~n; 5530#L20 assume ~n < 1;#res := 0; 5598#fibo2FINAL assume true; 5597#fibo2EXIT >#54#return; 5544#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5592#fibo1FINAL assume true; 5575#fibo1EXIT >#50#return; 5567#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5570#fibo2FINAL assume true; 5554#fibo2EXIT >#52#return; 5522#L15-1 [2023-11-21 22:26:50,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1086211661, now seen corresponding path program 1 times [2023-11-21 22:26:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:50,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785953983] [2023-11-21 22:26:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 22:26:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:26:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:51,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:51,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785953983] [2023-11-21 22:26:51,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785953983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:51,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266196666] [2023-11-21 22:26:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:51,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:51,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:51,207 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:51,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-21 22:26:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:26:51,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:51,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:26:51,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266196666] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:51,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:51,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2023-11-21 22:26:51,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297360237] [2023-11-21 22:26:51,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:51,564 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 22:26:51,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:51,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1084313501, now seen corresponding path program 1 times [2023-11-21 22:26:51,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:51,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924210048] [2023-11-21 22:26:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:51,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:26:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 22:26:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:26:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:51,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:26:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:26:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:26:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 22:26:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:26:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:26:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:26:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:26:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:51,953 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-11-21 22:26:51,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924210048] [2023-11-21 22:26:51,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924210048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:51,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805196220] [2023-11-21 22:26:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:51,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:51,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:51,955 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:51,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-21 22:26:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:52,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:26:52,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 107 proven. 1 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2023-11-21 22:26:52,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2023-11-21 22:26:52,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805196220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:52,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:52,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-21 22:26:52,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37716430] [2023-11-21 22:26:52,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:52,333 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:26:52,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:52,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-21 22:26:52,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:26:52,335 INFO L87 Difference]: Start difference. First operand 414 states and 573 transitions. cyclomatic complexity: 166 Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 13 states have internal predecessors, (41), 8 states have call successors, (10), 8 states have call predecessors, (10), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:26:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:52,688 INFO L93 Difference]: Finished difference Result 436 states and 604 transitions. [2023-11-21 22:26:52,688 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 436 states and 604 transitions. [2023-11-21 22:26:52,696 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-21 22:26:52,704 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 436 states to 431 states and 597 transitions. [2023-11-21 22:26:52,704 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 231 [2023-11-21 22:26:52,705 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 231 [2023-11-21 22:26:52,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 431 states and 597 transitions. [2023-11-21 22:26:52,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:52,705 INFO L218 hiAutomatonCegarLoop]: Abstraction has 431 states and 597 transitions. [2023-11-21 22:26:52,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states and 597 transitions. [2023-11-21 22:26:52,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2023-11-21 22:26:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 276 states have (on average 1.2028985507246377) internal successors, (332), 304 states have internal predecessors, (332), 89 states have call successors, (92), 60 states have call predecessors, (92), 60 states have return successors, (152), 60 states have call predecessors, (152), 87 states have call successors, (152) [2023-11-21 22:26:52,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 576 transitions. [2023-11-21 22:26:52,724 INFO L240 hiAutomatonCegarLoop]: Abstraction has 425 states and 576 transitions. [2023-11-21 22:26:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 22:26:52,725 INFO L428 stractBuchiCegarLoop]: Abstraction has 425 states and 576 transitions. [2023-11-21 22:26:52,726 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-21 22:26:52,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 425 states and 576 transitions. [2023-11-21 22:26:52,730 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-21 22:26:52,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:52,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:52,733 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:52,733 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2023-11-21 22:26:52,734 INFO L748 eck$LassoCheckResult]: Stem: 7748#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7700#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 7701#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 7754#$Ultimate##0 ~n := #in~n; 7823#L10 assume !(~n < 1); 7822#L12 assume !(1 == ~n); 7818#L15 call #t~ret4 := fibo2(~n - 1);< 7821#$Ultimate##0 ~n := #in~n; 7820#L20 assume !(~n < 1); 7819#L22 assume !(1 == ~n); 7814#L25 call #t~ret6 := fibo1(~n - 1);< 7817#$Ultimate##0 ~n := #in~n; 7816#L10 assume !(~n < 1); 7815#L12 assume !(1 == ~n); 7810#L15 call #t~ret4 := fibo2(~n - 1);< 7813#$Ultimate##0 ~n := #in~n; 7812#L20 assume !(~n < 1); 7811#L22 assume !(1 == ~n); 7806#L25 call #t~ret6 := fibo1(~n - 1);< 7809#$Ultimate##0 ~n := #in~n; 7808#L10 assume !(~n < 1); 7807#L12 assume !(1 == ~n); 7795#L15 call #t~ret4 := fibo2(~n - 1);< 7805#$Ultimate##0 ~n := #in~n; 7804#L20 assume !(~n < 1); 7800#L22 assume !(1 == ~n); 7715#L25 call #t~ret6 := fibo1(~n - 1);< 7796#$Ultimate##0 ~n := #in~n; 7802#L10 assume !(~n < 1); 7904#L12 assume !(1 == ~n); 7867#L15 call #t~ret4 := fibo2(~n - 1);< 7906#$Ultimate##0 ~n := #in~n; 7910#L20 assume !(~n < 1); 7908#L22 assume 1 == ~n;#res := 1; 7907#fibo2FINAL assume true; 7905#fibo2EXIT >#52#return; 7902#L15-1 call #t~ret5 := fibo2(~n - 2);< 7903#$Ultimate##0 ~n := #in~n; 7911#L20 assume ~n < 1;#res := 0; 7909#fibo2FINAL assume true; 7901#fibo2EXIT >#54#return; 7899#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7898#fibo1FINAL assume true; 7896#fibo1EXIT >#48#return; 7882#L25-1 call #t~ret7 := fibo1(~n - 2);< 7890#$Ultimate##0 ~n := #in~n; 7986#L10 assume ~n < 1;#res := 0; 7970#fibo1FINAL assume true; 7965#fibo1EXIT >#50#return; 7959#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7958#fibo2FINAL assume true; 7954#fibo2EXIT >#52#return; 7694#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 [2023-11-21 22:26:52,734 INFO L750 eck$LassoCheckResult]: Loop: 7952#$Ultimate##0 ~n := #in~n; 7680#L20 assume !(~n < 1); 7918#L22 assume !(1 == ~n); 7689#L25 call #t~ret6 := fibo1(~n - 1);< 7895#$Ultimate##0 ~n := #in~n; 7894#L10 assume !(~n < 1); 7893#L12 assume !(1 == ~n); 7677#L15 call #t~ret4 := fibo2(~n - 1);< 7676#$Ultimate##0 ~n := #in~n; 7680#L20 assume !(~n < 1); 7918#L22 assume !(1 == ~n); 7689#L25 call #t~ret6 := fibo1(~n - 1);< 7895#$Ultimate##0 ~n := #in~n; 7894#L10 assume !(~n < 1); 7893#L12 assume !(1 == ~n); 7677#L15 call #t~ret4 := fibo2(~n - 1);< 7676#$Ultimate##0 ~n := #in~n; 7679#L20 assume !(~n < 1); 8065#L22 assume 1 == ~n;#res := 1; 8018#fibo2FINAL assume true; 7976#fibo2EXIT >#52#return; 7692#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 ~n := #in~n; 8001#L20 assume ~n < 1;#res := 0; 8000#fibo2FINAL assume true; 7973#fibo2EXIT >#54#return; 7950#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7947#fibo1FINAL assume true; 7935#fibo1EXIT >#48#return; 7941#L25-1 call #t~ret7 := fibo1(~n - 2);< 7944#$Ultimate##0 ~n := #in~n; 7997#L10 assume !(~n < 1); 7996#L12 assume !(1 == ~n); 7722#L15 call #t~ret4 := fibo2(~n - 1);< 7978#$Ultimate##0 ~n := #in~n; 7985#L20 assume !(~n < 1); 7983#L22 assume !(1 == ~n); 7940#L25 call #t~ret6 := fibo1(~n - 1);< 7944#$Ultimate##0 ~n := #in~n; 7997#L10 assume !(~n < 1); 7996#L12 assume !(1 == ~n); 7722#L15 call #t~ret4 := fibo2(~n - 1);< 7978#$Ultimate##0 ~n := #in~n; 7985#L20 assume !(~n < 1); 7983#L22 assume 1 == ~n;#res := 1; 7984#fibo2FINAL assume true; 7975#fibo2EXIT >#52#return; 7692#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 ~n := #in~n; 8001#L20 assume ~n < 1;#res := 0; 8000#fibo2FINAL assume true; 7973#fibo2EXIT >#54#return; 7950#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7947#fibo1FINAL assume true; 7935#fibo1EXIT >#48#return; 7941#L25-1 call #t~ret7 := fibo1(~n - 2);< 7944#$Ultimate##0 ~n := #in~n; 7997#L10 assume ~n < 1;#res := 0; 7991#fibo1FINAL assume true; 7964#fibo1EXIT >#50#return; 7699#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7725#fibo2FINAL assume true; 7972#fibo2EXIT >#52#return; 7692#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 ~n := #in~n; 8001#L20 assume ~n < 1;#res := 0; 8000#fibo2FINAL assume true; 7973#fibo2EXIT >#54#return; 7950#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7947#fibo1FINAL assume true; 7935#fibo1EXIT >#50#return; 7699#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7725#fibo2FINAL assume true; 7972#fibo2EXIT >#52#return; 7692#L15-1 call #t~ret5 := fibo2(~n - 2);< 7952#$Ultimate##0 [2023-11-21 22:26:52,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash 138509055, now seen corresponding path program 1 times [2023-11-21 22:26:52,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:52,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933362950] [2023-11-21 22:26:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:52,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:52,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:26:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:26:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:26:53,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 22:26:53,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:53,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933362950] [2023-11-21 22:26:53,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933362950] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:53,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170491275] [2023-11-21 22:26:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:53,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:53,073 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:53,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-21 22:26:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:26:53,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:26:53,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 22:26:53,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170491275] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:53,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:53,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2023-11-21 22:26:53,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473404857] [2023-11-21 22:26:53,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:53,594 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 22:26:53,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:53,595 INFO L85 PathProgramCache]: Analyzing trace with hash -96284739, now seen corresponding path program 1 times [2023-11-21 22:26:53,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:53,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170808088] [2023-11-21 22:26:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:53,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:26:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:26:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:26:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:26:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:26:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:26:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,900 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-21 22:26:53,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170808088] [2023-11-21 22:26:53,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170808088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:53,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491790515] [2023-11-21 22:26:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:53,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:53,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:53,907 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:53,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-21 22:26:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:53,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:26:53,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-21 22:26:54,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-21 22:26:54,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491790515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:54,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:54,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-21 22:26:54,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355323804] [2023-11-21 22:26:54,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:54,685 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 22:26:54,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:54,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:26:54,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:26:54,686 INFO L87 Difference]: Start difference. First operand 425 states and 576 transitions. cyclomatic complexity: 158 Second operand has 24 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 18 states have internal predecessors, (49), 12 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-21 22:26:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:55,143 INFO L93 Difference]: Finished difference Result 456 states and 630 transitions. [2023-11-21 22:26:55,143 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 456 states and 630 transitions. [2023-11-21 22:26:55,152 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-21 22:26:55,159 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 456 states to 456 states and 630 transitions. [2023-11-21 22:26:55,160 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 251 [2023-11-21 22:26:55,160 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 251 [2023-11-21 22:26:55,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 456 states and 630 transitions. [2023-11-21 22:26:55,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:55,161 INFO L218 hiAutomatonCegarLoop]: Abstraction has 456 states and 630 transitions. [2023-11-21 22:26:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states and 630 transitions. [2023-11-21 22:26:55,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 438. [2023-11-21 22:26:55,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 284 states have (on average 1.1971830985915493) internal successors, (340), 314 states have internal predecessors, (340), 90 states have call successors, (93), 61 states have call predecessors, (93), 64 states have return successors, (159), 62 states have call predecessors, (159), 88 states have call successors, (159) [2023-11-21 22:26:55,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 592 transitions. [2023-11-21 22:26:55,181 INFO L240 hiAutomatonCegarLoop]: Abstraction has 438 states and 592 transitions. [2023-11-21 22:26:55,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-21 22:26:55,183 INFO L428 stractBuchiCegarLoop]: Abstraction has 438 states and 592 transitions. [2023-11-21 22:26:55,183 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-21 22:26:55,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 438 states and 592 transitions. [2023-11-21 22:26:55,187 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-21 22:26:55,187 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:55,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:55,189 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:55,189 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:55,189 INFO L748 eck$LassoCheckResult]: Stem: 9702#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 9662#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 9663#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 9708#$Ultimate##0 ~n := #in~n; 9774#L10 assume !(~n < 1); 9773#L12 assume !(1 == ~n); 9769#L15 call #t~ret4 := fibo2(~n - 1);< 9772#$Ultimate##0 ~n := #in~n; 9771#L20 assume !(~n < 1); 9770#L22 assume !(1 == ~n); 9765#L25 call #t~ret6 := fibo1(~n - 1);< 9768#$Ultimate##0 ~n := #in~n; 9767#L10 assume !(~n < 1); 9766#L12 assume !(1 == ~n); 9761#L15 call #t~ret4 := fibo2(~n - 1);< 9764#$Ultimate##0 ~n := #in~n; 9763#L20 assume !(~n < 1); 9762#L22 assume !(1 == ~n); 9757#L25 call #t~ret6 := fibo1(~n - 1);< 9760#$Ultimate##0 ~n := #in~n; 9759#L10 assume !(~n < 1); 9758#L12 assume !(1 == ~n); 9743#L15 call #t~ret4 := fibo2(~n - 1);< 9755#$Ultimate##0 ~n := #in~n; 9754#L20 assume !(~n < 1); 9751#L22 assume !(1 == ~n); 9683#L25 call #t~ret6 := fibo1(~n - 1);< 9744#$Ultimate##0 ~n := #in~n; 9733#L10 assume !(~n < 1); 9734#L12 assume !(1 == ~n); 9722#L15 call #t~ret4 := fibo2(~n - 1);< 9723#$Ultimate##0 ~n := #in~n; 9735#L20 assume !(~n < 1); 9736#L22 assume !(1 == ~n); 9682#L25 call #t~ret6 := fibo1(~n - 1);< 9744#$Ultimate##0 ~n := #in~n; 9752#L10 assume !(~n < 1); 9852#L12 assume 1 == ~n;#res := 1; 9850#fibo1FINAL assume true; 9846#fibo1EXIT >#48#return; 9826#L25-1 call #t~ret7 := fibo1(~n - 2);< 9843#$Ultimate##0 ~n := #in~n; 9945#L10 assume ~n < 1;#res := 0; 9946#fibo1FINAL assume true; 10011#fibo1EXIT >#50#return; 9940#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 10006#fibo2FINAL assume true; 9949#fibo2EXIT >#52#return; 9863#L15-1 [2023-11-21 22:26:55,189 INFO L750 eck$LassoCheckResult]: Loop: 9863#L15-1 call #t~ret5 := fibo2(~n - 2);< 9892#$Ultimate##0 ~n := #in~n; 9951#L20 assume !(~n < 1); 9859#L22 assume !(1 == ~n); 9866#L25 call #t~ret6 := fibo1(~n - 1);< 9944#$Ultimate##0 ~n := #in~n; 9976#L10 assume !(~n < 1); 9974#L12 assume !(1 == ~n); 9860#L15 call #t~ret4 := fibo2(~n - 1);< 9956#$Ultimate##0 ~n := #in~n; 9985#L20 assume !(~n < 1); 9983#L22 assume !(1 == ~n); 9984#L25 call #t~ret6 := fibo1(~n - 1);< 9995#$Ultimate##0 ~n := #in~n; 9999#L10 assume !(~n < 1); 9998#L12 assume 1 == ~n;#res := 1; 9997#fibo1FINAL assume true; 9994#fibo1EXIT >#48#return; 9967#L25-1 call #t~ret7 := fibo1(~n - 2);< 9969#$Ultimate##0 ~n := #in~n; 9978#L10 assume ~n < 1;#res := 0; 9979#fibo1FINAL assume true; 10001#fibo1EXIT >#50#return; 9988#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 9987#fibo2FINAL assume true; 9952#fibo2EXIT >#52#return; 9863#L15-1 [2023-11-21 22:26:55,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash -377478758, now seen corresponding path program 1 times [2023-11-21 22:26:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:55,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834039563] [2023-11-21 22:26:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:55,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-21 22:26:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:26:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:55,491 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:26:55,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834039563] [2023-11-21 22:26:55,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834039563] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973391959] [2023-11-21 22:26:55,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:55,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:55,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:55,495 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:55,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-21 22:26:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:55,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-21 22:26:55,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:26:55,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:26:56,013 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:26:56,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973391959] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:26:56,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:26:56,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2023-11-21 22:26:56,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906260790] [2023-11-21 22:26:56,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:26:56,015 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 22:26:56,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:56,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1404661389, now seen corresponding path program 1 times [2023-11-21 22:26:56,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:56,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215526619] [2023-11-21 22:26:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:56,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:56,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:26:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:26:56,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:26:56,325 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:26:56,325 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:26:56,325 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:26:56,325 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:26:56,326 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 22:26:56,326 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,326 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:26:56,326 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:26:56,326 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2023-11-21 22:26:56,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:26:56,326 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:26:56,327 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,330 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,333 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,335 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,341 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,344 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,346 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,400 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:26:56,400 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 22:26:56,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,403 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-11-21 22:26:56,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:56,408 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,435 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:56,435 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:56,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:56,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,456 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:56,460 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-21 22:26:56,482 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:56,482 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:56,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:56,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,501 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-21 22:26:56,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:56,503 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,514 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:56,514 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:56,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:56,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,530 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-21 22:26:56,531 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:56,531 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,546 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:56,546 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:56,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:56,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,566 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:56,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-21 22:26:56,596 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:56,596 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:56,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:56,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,617 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:56,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-21 22:26:56,651 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:56,651 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:56,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:56,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,671 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:56,674 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-21 22:26:56,685 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:56,686 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=3} Honda state: {fibo1_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:56,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:56,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,702 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-21 22:26:56,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:56,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,715 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:26:56,716 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:26:56,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2023-11-21 22:26:56,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,730 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-21 22:26:56,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:26:56,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2023-11-21 22:26:56,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,759 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2023-11-21 22:26:56,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 22:26:56,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:26:56,782 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 22:26:56,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:56,801 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:26:56,801 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:26:56,801 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:26:56,801 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:26:56,801 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 22:26:56,801 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,801 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:26:56,802 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:26:56,802 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2023-11-21 22:26:56,802 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:26:56,802 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:26:56,802 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,805 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,807 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,808 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,811 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,829 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:26:56,885 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:26:56,885 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 22:26:56,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,886 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,896 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 [2023-11-21 22:26:56,908 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:56,908 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:56,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:56,909 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:56,909 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:56,909 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:56,909 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:56,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-21 22:26:56,918 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:56,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:56,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,939 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-21 22:26:56,942 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 [2023-11-21 22:26:56,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:56,953 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:56,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:56,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:56,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:56,954 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:56,954 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:56,955 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:56,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2023-11-21 22:26:56,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:56,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:56,968 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:56,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-21 22:26:56,975 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 [2023-11-21 22:26:56,988 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:56,988 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:56,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:56,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:56,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:56,989 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:56,989 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:57,003 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:57,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:57,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:57,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:57,023 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:57,027 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 [2023-11-21 22:26:57,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:57,040 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:57,040 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:57,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:57,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:57,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:57,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:57,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-21 22:26:57,063 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:57,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:57,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:57,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:57,083 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:57,088 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 [2023-11-21 22:26:57,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:57,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:57,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:57,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:57,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:57,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:57,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:57,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-21 22:26:57,123 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:57,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-21 22:26:57,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:57,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:57,143 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:57,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-21 22:26:57,144 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 [2023-11-21 22:26:57,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:57,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:57,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:57,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:57,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:57,155 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:57,155 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:57,157 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:26:57,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2023-11-21 22:26:57,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:57,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:57,171 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:57,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2023-11-21 22:26:57,173 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 [2023-11-21 22:26:57,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:26:57,183 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:26:57,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:26:57,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:26:57,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:26:57,184 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:26:57,184 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:26:57,211 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 22:26:57,215 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 22:26:57,215 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-21 22:26:57,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:26:57,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:57,217 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:26:57,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2023-11-21 22:26:57,218 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 22:26:57,218 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 22:26:57,218 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 22:26:57,218 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-21 22:26:57,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2023-11-21 22:26:57,233 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 22:26:57,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:57,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2023-11-21 22:26:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:57,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-21 22:26:57,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:57,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 22:26:57,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:26:57,758 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2023-11-21 22:26:57,758 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-21 22:26:58,260 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1825 states and 2492 transitions. Complement of second has 46 states. [2023-11-21 22:26:58,260 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 [2023-11-21 22:26:58,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-21 22:26:58,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2023-11-21 22:26:58,262 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 26 letters. [2023-11-21 22:26:58,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:58,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 74 letters. Loop has 26 letters. [2023-11-21 22:26:58,264 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:58,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 52 letters. [2023-11-21 22:26:58,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:26:58,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1825 states and 2492 transitions. [2023-11-21 22:26:58,299 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 143 [2023-11-21 22:26:58,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1825 states to 1659 states and 2309 transitions. [2023-11-21 22:26:58,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 586 [2023-11-21 22:26:58,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 620 [2023-11-21 22:26:58,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1659 states and 2309 transitions. [2023-11-21 22:26:58,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:58,358 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1659 states and 2309 transitions. [2023-11-21 22:26:58,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states and 2309 transitions. [2023-11-21 22:26:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1574. [2023-11-21 22:26:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1574 states, 1000 states have (on average 1.224) internal successors, (1224), 1129 states have internal predecessors, (1224), 331 states have call successors, (346), 202 states have call predecessors, (346), 243 states have return successors, (620), 242 states have call predecessors, (620), 329 states have call successors, (620) [2023-11-21 22:26:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1574 states to 1574 states and 2190 transitions. [2023-11-21 22:26:58,437 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1574 states and 2190 transitions. [2023-11-21 22:26:58,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:26:58,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 22:26:58,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:26:58,439 INFO L87 Difference]: Start difference. First operand 1574 states and 2190 transitions. Second operand has 26 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (13), 8 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-21 22:26:59,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:26:59,215 INFO L93 Difference]: Finished difference Result 1762 states and 2206 transitions. [2023-11-21 22:26:59,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1762 states and 2206 transitions. [2023-11-21 22:26:59,249 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 147 [2023-11-21 22:26:59,261 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1762 states to 769 states and 919 transitions. [2023-11-21 22:26:59,261 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 423 [2023-11-21 22:26:59,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 423 [2023-11-21 22:26:59,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 769 states and 919 transitions. [2023-11-21 22:26:59,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:26:59,263 INFO L218 hiAutomatonCegarLoop]: Abstraction has 769 states and 919 transitions. [2023-11-21 22:26:59,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states and 919 transitions. [2023-11-21 22:26:59,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 647. [2023-11-21 22:26:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 421 states have (on average 1.156769596199525) internal successors, (487), 461 states have internal predecessors, (487), 136 states have call successors, (138), 100 states have call predecessors, (138), 90 states have return successors, (142), 85 states have call predecessors, (142), 102 states have call successors, (142) [2023-11-21 22:26:59,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 767 transitions. [2023-11-21 22:26:59,286 INFO L240 hiAutomatonCegarLoop]: Abstraction has 647 states and 767 transitions. [2023-11-21 22:26:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-21 22:26:59,289 INFO L428 stractBuchiCegarLoop]: Abstraction has 647 states and 767 transitions. [2023-11-21 22:26:59,289 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-21 22:26:59,289 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 647 states and 767 transitions. [2023-11-21 22:26:59,295 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 104 [2023-11-21 22:26:59,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:26:59,295 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:26:59,297 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:59,297 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:26:59,298 INFO L748 eck$LassoCheckResult]: Stem: 15974#$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(18, 2);call #Ultimate.allocInit(12, 3); 15947#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 15948#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 15979#$Ultimate##0 ~n := #in~n; 16052#L10 assume !(~n < 1); 16051#L12 assume !(1 == ~n); 16047#L15 call #t~ret4 := fibo2(~n - 1);< 16050#$Ultimate##0 ~n := #in~n; 16049#L20 assume !(~n < 1); 16048#L22 assume !(1 == ~n); 16043#L25 call #t~ret6 := fibo1(~n - 1);< 16046#$Ultimate##0 ~n := #in~n; 16045#L10 assume !(~n < 1); 16044#L12 assume !(1 == ~n); 16039#L15 call #t~ret4 := fibo2(~n - 1);< 16042#$Ultimate##0 ~n := #in~n; 16041#L20 assume !(~n < 1); 16040#L22 assume !(1 == ~n); 16035#L25 call #t~ret6 := fibo1(~n - 1);< 16038#$Ultimate##0 ~n := #in~n; 16037#L10 assume !(~n < 1); 16036#L12 assume !(1 == ~n); 16031#L15 call #t~ret4 := fibo2(~n - 1);< 16034#$Ultimate##0 ~n := #in~n; 16033#L20 assume !(~n < 1); 16032#L22 assume !(1 == ~n); 16026#L25 call #t~ret6 := fibo1(~n - 1);< 16029#$Ultimate##0 ~n := #in~n; 16030#L10 assume !(~n < 1); 16111#L12 assume !(1 == ~n); 16112#L15 call #t~ret4 := fibo2(~n - 1);< 16176#$Ultimate##0 ~n := #in~n; 16180#L20 assume !(~n < 1); 16179#L22 assume 1 == ~n;#res := 1; 16178#fibo2FINAL assume true; 16175#fibo2EXIT >#52#return; 16172#L15-1 call #t~ret5 := fibo2(~n - 2);< 16173#$Ultimate##0 ~n := #in~n; 16177#L20 assume ~n < 1;#res := 0; 16174#fibo2FINAL assume true; 16171#fibo2EXIT >#54#return; 16170#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 16169#fibo1FINAL assume true; 16136#fibo1EXIT >#48#return; 16137#L25-1 call #t~ret7 := fibo1(~n - 2);< 16376#$Ultimate##0 ~n := #in~n; 16417#L10 assume !(~n < 1); 16416#L12 assume !(1 == ~n); 16334#L15 call #t~ret4 := fibo2(~n - 1);< 16333#$Ultimate##0 ~n := #in~n; 16336#L20 assume !(~n < 1); 16391#L22 assume 1 == ~n;#res := 1; 16389#fibo2FINAL assume true; 16387#fibo2EXIT >#52#return; 16224#L15-1 [2023-11-21 22:26:59,298 INFO L750 eck$LassoCheckResult]: Loop: 16224#L15-1 call #t~ret5 := fibo2(~n - 2);< 16233#$Ultimate##0 ~n := #in~n; 16302#L20 assume !(~n < 1); 16349#L22 assume !(1 == ~n); 16258#L25 call #t~ret6 := fibo1(~n - 1);< 16347#$Ultimate##0 ~n := #in~n; 16345#L10 assume !(~n < 1); 16342#L12 assume !(1 == ~n); 16266#L15 call #t~ret4 := fibo2(~n - 1);< 16273#$Ultimate##0 ~n := #in~n; 16300#L20 assume !(~n < 1); 16297#L22 assume 1 == ~n;#res := 1; 16284#fibo2FINAL assume true; 16272#fibo2EXIT >#52#return; 16224#L15-1 [2023-11-21 22:26:59,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:26:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1790184504, now seen corresponding path program 1 times [2023-11-21 22:26:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:26:59,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825158204] [2023-11-21 22:26:59,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:59,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:26:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 22:26:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:26:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:59,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:26:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 22:26:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:26:59,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:26:59,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825158204] [2023-11-21 22:26:59,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825158204] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:26:59,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251447505] [2023-11-21 22:26:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:26:59,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:26:59,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:26:59,598 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:26:59,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-11-21 22:26:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:26:59,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 22:26:59,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:26:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:26:59,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:27:00,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251447505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:00,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:27:00,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2023-11-21 22:27:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241480970] [2023-11-21 22:27:00,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:00,003 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 22:27:00,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:00,003 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2023-11-21 22:27:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:00,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501628174] [2023-11-21 22:27:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:00,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:00,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:27:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:00,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:27:00,195 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:27:00,195 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:27:00,195 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:27:00,195 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:27:00,195 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 22:27:00,195 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,195 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:27:00,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:27:00,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration8_Loop [2023-11-21 22:27:00,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:27:00,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:27:00,196 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,199 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,201 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,203 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,206 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,208 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,210 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,213 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,216 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,269 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:27:00,269 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 22:27:00,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,272 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,275 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:00,275 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2023-11-21 22:27:00,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:27:00,303 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:27:00,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,323 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:00,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2023-11-21 22:27:00,339 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:27:00,339 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:27:00,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2023-11-21 22:27:00,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,358 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2023-11-21 22:27:00,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:00,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,372 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:27:00,372 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:27:00,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:00,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,389 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2023-11-21 22:27:00,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:00,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,431 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:27:00,431 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:27:00,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2023-11-21 22:27:00,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,445 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2023-11-21 22:27:00,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:00,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,459 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:27:00,459 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:27:00,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2023-11-21 22:27:00,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,474 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2023-11-21 22:27:00,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:00,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,488 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:27:00,488 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:27:00,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2023-11-21 22:27:00,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,506 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:00,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2023-11-21 22:27:00,523 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:27:00,523 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:27:00,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2023-11-21 22:27:00,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,537 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2023-11-21 22:27:00,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:00,539 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,550 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 22:27:00,550 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=2} Honda state: {fibo1_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-21 22:27:00,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2023-11-21 22:27:00,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,563 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2023-11-21 22:27:00,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:00,565 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:00,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,609 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2023-11-21 22:27:00,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 22:27:00,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:00,625 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 22:27:00,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2023-11-21 22:27:00,638 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:27:00,638 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:27:00,638 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:27:00,638 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:27:00,638 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 22:27:00,638 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,638 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:27:00,638 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:27:00,638 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration8_Loop [2023-11-21 22:27:00,638 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:27:00,638 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:27:00,639 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,654 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,658 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,666 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,671 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:00,729 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:27:00,729 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 22:27:00,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,731 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2023-11-21 22:27:00,733 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 [2023-11-21 22:27:00,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:00,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:00,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:00,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:00,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:00,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:00,745 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:00,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:27:00,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2023-11-21 22:27:00,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,762 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2023-11-21 22:27:00,764 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 [2023-11-21 22:27:00,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:00,774 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:00,774 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:00,774 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:00,774 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:00,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:00,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:00,776 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:27:00,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2023-11-21 22:27:00,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,789 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2023-11-21 22:27:00,790 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 [2023-11-21 22:27:00,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:00,800 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:00,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:00,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:00,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:00,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:00,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:00,802 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:27:00,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Ended with exit code 0 [2023-11-21 22:27:00,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,816 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2023-11-21 22:27:00,818 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 [2023-11-21 22:27:00,828 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:00,828 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:00,828 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:00,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:00,829 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:00,829 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:00,829 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:00,830 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:27:00,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2023-11-21 22:27:00,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,843 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2023-11-21 22:27:00,844 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 [2023-11-21 22:27:00,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:00,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:00,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:00,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:00,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:00,855 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:00,855 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:00,856 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:27:00,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2023-11-21 22:27:00,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,870 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,876 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 [2023-11-21 22:27:00,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2023-11-21 22:27:00,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:00,887 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:00,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:00,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:00,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:00,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:00,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:00,890 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:27:00,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Ended with exit code 0 [2023-11-21 22:27:00,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,902 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2023-11-21 22:27:00,905 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 [2023-11-21 22:27:00,915 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:00,915 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:00,915 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:00,915 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:00,915 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:00,916 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:00,916 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:00,917 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:27:00,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2023-11-21 22:27:00,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,931 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2023-11-21 22:27:00,933 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 [2023-11-21 22:27:00,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:00,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:00,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:00,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:00,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:00,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:00,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:00,946 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 22:27:00,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Ended with exit code 0 [2023-11-21 22:27:00,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,960 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2023-11-21 22:27:00,961 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 [2023-11-21 22:27:00,971 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:00,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:00,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:00,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:00,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:00,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:00,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:00,975 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 22:27:00,978 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 22:27:00,978 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-21 22:27:00,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:00,979 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:00,981 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 22:27:00,981 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 22:27:00,981 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 22:27:00,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2023-11-21 22:27:00,981 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-21 22:27:00,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2023-11-21 22:27:00,996 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 22:27:01,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:01,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 22:27:01,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:01,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-21 22:27:01,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:01,438 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-21 22:27:01,439 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:27:01,809 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 932 states and 1091 transitions. Complement of second has 40 states. [2023-11-21 22:27:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-21 22:27:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:27:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 56 transitions. [2023-11-21 22:27:01,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 56 transitions. Stem has 54 letters. Loop has 14 letters. [2023-11-21 22:27:01,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:01,812 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 22:27:01,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:01,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:01,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 22:27:01,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:02,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-21 22:27:02,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:02,351 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-21 22:27:02,351 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:27:02,617 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1128 states and 1301 transitions. Complement of second has 26 states. [2023-11-21 22:27:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2023-11-21 22:27:02,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:27:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2023-11-21 22:27:02,618 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 54 letters. Loop has 14 letters. [2023-11-21 22:27:02,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:02,619 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 22:27:02,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:02,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-21 22:27:02,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:02,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-21 22:27:02,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:03,094 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 8 loop predicates [2023-11-21 22:27:03,095 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:27:03,491 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 647 states and 767 transitions. cyclomatic complexity: 134. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 2054 states and 2442 transitions. Complement of second has 102 states. [2023-11-21 22:27:03,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-21 22:27:03,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:27:03,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2023-11-21 22:27:03,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 14 letters. [2023-11-21 22:27:03,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:03,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 68 letters. Loop has 14 letters. [2023-11-21 22:27:03,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:03,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 28 letters. [2023-11-21 22:27:03,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:03,495 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2054 states and 2442 transitions. [2023-11-21 22:27:03,517 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 247 [2023-11-21 22:27:03,531 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2054 states to 1246 states and 1524 transitions. [2023-11-21 22:27:03,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 545 [2023-11-21 22:27:03,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 593 [2023-11-21 22:27:03,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1246 states and 1524 transitions. [2023-11-21 22:27:03,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:27:03,533 INFO L218 hiAutomatonCegarLoop]: Abstraction has 1246 states and 1524 transitions. [2023-11-21 22:27:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states and 1524 transitions. [2023-11-21 22:27:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1061. [2023-11-21 22:27:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 686 states have (on average 1.1574344023323615) internal successors, (794), 762 states have internal predecessors, (794), 219 states have call successors, (232), 156 states have call predecessors, (232), 156 states have return successors, (259), 142 states have call predecessors, (259), 179 states have call successors, (259) [2023-11-21 22:27:03,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1285 transitions. [2023-11-21 22:27:03,567 INFO L240 hiAutomatonCegarLoop]: Abstraction has 1061 states and 1285 transitions. [2023-11-21 22:27:03,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:03,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-21 22:27:03,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:27:03,568 INFO L87 Difference]: Start difference. First operand 1061 states and 1285 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 14 states have internal predecessors, (41), 10 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-21 22:27:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:03,970 INFO L93 Difference]: Finished difference Result 745 states and 889 transitions. [2023-11-21 22:27:03,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 745 states and 889 transitions. [2023-11-21 22:27:03,978 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2023-11-21 22:27:04,013 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 745 states to 569 states and 691 transitions. [2023-11-21 22:27:04,014 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 319 [2023-11-21 22:27:04,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 343 [2023-11-21 22:27:04,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 569 states and 691 transitions. [2023-11-21 22:27:04,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:27:04,014 INFO L218 hiAutomatonCegarLoop]: Abstraction has 569 states and 691 transitions. [2023-11-21 22:27:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states and 691 transitions. [2023-11-21 22:27:04,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 550. [2023-11-21 22:27:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 356 states have (on average 1.1292134831460674) internal successors, (402), 392 states have internal predecessors, (402), 112 states have call successors, (119), 76 states have call predecessors, (119), 82 states have return successors, (146), 81 states have call predecessors, (146), 101 states have call successors, (146) [2023-11-21 22:27:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 667 transitions. [2023-11-21 22:27:04,033 INFO L240 hiAutomatonCegarLoop]: Abstraction has 550 states and 667 transitions. [2023-11-21 22:27:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-21 22:27:04,035 INFO L428 stractBuchiCegarLoop]: Abstraction has 550 states and 667 transitions. [2023-11-21 22:27:04,035 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-21 22:27:04,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 550 states and 667 transitions. [2023-11-21 22:27:04,040 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2023-11-21 22:27:04,040 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:27:04,041 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:27:04,044 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:04,044 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:04,046 INFO L748 eck$LassoCheckResult]: Stem: 23819#$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(18, 2);call #Ultimate.allocInit(12, 3); 23783#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 23784#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 23825#$Ultimate##0 ~n := #in~n; 23893#L10 assume !(~n < 1); 23892#L12 assume !(1 == ~n); 23890#L15 call #t~ret4 := fibo2(~n - 1);< 23891#$Ultimate##0 ~n := #in~n; 23914#L20 assume !(~n < 1); 23913#L22 assume !(1 == ~n); 23901#L25 call #t~ret6 := fibo1(~n - 1);< 23902#$Ultimate##0 ~n := #in~n; 23993#L10 assume !(~n < 1); 23991#L12 assume !(1 == ~n); 23988#L15 call #t~ret4 := fibo2(~n - 1);< 23989#$Ultimate##0 ~n := #in~n; 24065#L20 assume !(~n < 1); 24057#L22 assume !(1 == ~n); 24054#L25 call #t~ret6 := fibo1(~n - 1);< 24055#$Ultimate##0 ~n := #in~n; 24084#L10 assume !(~n < 1); 24083#L12 assume !(1 == ~n); 24081#L15 call #t~ret4 := fibo2(~n - 1);< 24082#$Ultimate##0 ~n := #in~n; 24098#L20 assume !(~n < 1); 24095#L22 assume !(1 == ~n); 24092#L25 call #t~ret6 := fibo1(~n - 1);< 24093#$Ultimate##0 ~n := #in~n; 24128#L10 assume !(~n < 1); 24127#L12 assume !(1 == ~n); 24125#L15 call #t~ret4 := fibo2(~n - 1);< 24126#$Ultimate##0 ~n := #in~n; 24131#L20 assume !(~n < 1); 24130#L22 assume 1 == ~n;#res := 1; 24129#fibo2FINAL assume true; 24124#fibo2EXIT >#52#return; 24122#L15-1 call #t~ret5 := fibo2(~n - 2);< 24123#$Ultimate##0 ~n := #in~n; 24133#L20 assume ~n < 1;#res := 0; 24132#fibo2FINAL assume true; 24121#fibo2EXIT >#54#return; 24119#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 24117#fibo1FINAL assume true; 24091#fibo1EXIT >#48#return; 24088#L25-1 call #t~ret7 := fibo1(~n - 2);< 24089#$Ultimate##0 ~n := #in~n; 24136#L10 assume !(~n < 1); 24135#L12 assume 1 == ~n;#res := 1; 24134#fibo1FINAL assume true; 24087#fibo1EXIT >#50#return; 24086#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 24085#fibo2FINAL assume true; 24080#fibo2EXIT >#52#return; 23746#L15-1 call #t~ret5 := fibo2(~n - 2);< 24064#$Ultimate##0 ~n := #in~n; 24096#L20 assume !(~n < 1); 24094#L22 assume 1 == ~n;#res := 1; 24090#fibo2FINAL assume true; 24078#fibo2EXIT >#54#return; 24062#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 24077#fibo1FINAL assume true; 24053#fibo1EXIT >#48#return; 23944#L25-1 call #t~ret7 := fibo1(~n - 2);< 24052#$Ultimate##0 ~n := #in~n; 24249#L10 assume !(~n < 1); 24248#L12 assume !(1 == ~n); 23973#L15 call #t~ret4 := fibo2(~n - 1);< 24069#$Ultimate##0 [2023-11-21 22:27:04,046 INFO L750 eck$LassoCheckResult]: Loop: 24069#$Ultimate##0 ~n := #in~n; 24120#L20 assume !(~n < 1); 24118#L22 assume !(1 == ~n); 23773#L25 call #t~ret6 := fibo1(~n - 1);< 23769#$Ultimate##0 ~n := #in~n; 24105#L10 assume !(~n < 1); 24102#L12 assume !(1 == ~n); 24060#L15 call #t~ret4 := fibo2(~n - 1);< 24069#$Ultimate##0 [2023-11-21 22:27:04,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash -96157049, now seen corresponding path program 1 times [2023-11-21 22:27:04,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:04,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122066676] [2023-11-21 22:27:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:04,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 22:27:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:27:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:27:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:27:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:27:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:27:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:27:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,411 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-21 22:27:04,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122066676] [2023-11-21 22:27:04,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122066676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:27:04,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407708148] [2023-11-21 22:27:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:04,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:04,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:04,413 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:04,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2023-11-21 22:27:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:04,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:27:04,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-21 22:27:04,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-21 22:27:04,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407708148] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:04,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:27:04,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 25 [2023-11-21 22:27:04,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040925662] [2023-11-21 22:27:04,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:04,911 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 22:27:04,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 3 times [2023-11-21 22:27:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:04,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40901099] [2023-11-21 22:27:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:04,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:27:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:04,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:27:05,037 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:27:05,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:27:05,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:27:05,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:27:05,038 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 22:27:05,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:05,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:27:05,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:27:05,039 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration9_Loop [2023-11-21 22:27:05,039 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:27:05,039 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:27:05,040 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,047 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,050 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,052 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,054 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,056 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,058 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,061 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,103 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:27:05,103 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 22:27:05,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:05,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:05,105 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:05,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:05,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:05,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2023-11-21 22:27:05,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:05,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:05,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:05,159 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:05,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 22:27:05,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:05,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2023-11-21 22:27:05,230 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 22:27:05,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Ended with exit code 0 [2023-11-21 22:27:05,233 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:27:05,233 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:27:05,233 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:27:05,233 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:27:05,233 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 22:27:05,234 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:05,234 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:27:05,234 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:27:05,234 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration9_Loop [2023-11-21 22:27:05,234 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:27:05,234 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:27:05,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,248 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,250 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,252 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,254 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,256 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,258 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,260 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:05,315 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:27:05,317 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 22:27:05,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:05,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:05,319 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:05,324 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 [2023-11-21 22:27:05,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2023-11-21 22:27:05,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:05,335 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:05,335 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:05,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:05,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:05,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:05,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:05,338 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 22:27:05,340 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-21 22:27:05,340 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 22:27:05,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:05,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:05,342 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:05,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2023-11-21 22:27:05,343 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 22:27:05,343 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 22:27:05,343 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 22:27:05,344 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-21 22:27:05,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:05,358 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 22:27:05,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:05,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-21 22:27:05,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:05,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:05,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:06,010 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-21 22:27:06,010 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:06,133 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 575 states and 692 transitions. Complement of second has 15 states. [2023-11-21 22:27:06,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-21 22:27:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-21 22:27:06,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-21 22:27:06,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:06,135 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 22:27:06,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:06,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-21 22:27:06,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:06,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:06,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:06,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:06,765 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2023-11-21 22:27:06,766 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:06,881 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 575 states and 692 transitions. Complement of second has 15 states. [2023-11-21 22:27:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-21 22:27:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:06,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-21 22:27:06,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-21 22:27:06,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:06,884 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 22:27:06,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:06,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-21 22:27:06,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:07,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:07,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:07,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:07,558 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 5 loop predicates [2023-11-21 22:27:07,558 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:07,758 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 550 states and 667 transitions. cyclomatic complexity: 124. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 937 states and 1091 transitions. Complement of second has 27 states. [2023-11-21 22:27:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-21 22:27:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-21 22:27:07,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-21 22:27:07,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:07,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 75 letters. Loop has 8 letters. [2023-11-21 22:27:07,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:07,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 16 letters. [2023-11-21 22:27:07,763 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:07,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 937 states and 1091 transitions. [2023-11-21 22:27:07,774 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2023-11-21 22:27:07,782 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 937 states to 666 states and 790 transitions. [2023-11-21 22:27:07,782 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 348 [2023-11-21 22:27:07,783 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 378 [2023-11-21 22:27:07,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 666 states and 790 transitions. [2023-11-21 22:27:07,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:27:07,784 INFO L218 hiAutomatonCegarLoop]: Abstraction has 666 states and 790 transitions. [2023-11-21 22:27:07,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states and 790 transitions. [2023-11-21 22:27:07,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 587. [2023-11-21 22:27:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 390 states have (on average 1.123076923076923) internal successors, (438), 423 states have internal predecessors, (438), 115 states have call successors, (122), 83 states have call predecessors, (122), 82 states have return successors, (140), 80 states have call predecessors, (140), 102 states have call successors, (140) [2023-11-21 22:27:07,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 700 transitions. [2023-11-21 22:27:07,804 INFO L240 hiAutomatonCegarLoop]: Abstraction has 587 states and 700 transitions. [2023-11-21 22:27:07,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-21 22:27:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-21 22:27:07,806 INFO L87 Difference]: Start difference. First operand 587 states and 700 transitions. Second operand has 25 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 13 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-21 22:27:08,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:08,392 INFO L93 Difference]: Finished difference Result 752 states and 952 transitions. [2023-11-21 22:27:08,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 752 states and 952 transitions. [2023-11-21 22:27:08,402 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2023-11-21 22:27:08,411 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 752 states to 690 states and 870 transitions. [2023-11-21 22:27:08,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 372 [2023-11-21 22:27:08,412 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 372 [2023-11-21 22:27:08,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 690 states and 870 transitions. [2023-11-21 22:27:08,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 22:27:08,413 INFO L218 hiAutomatonCegarLoop]: Abstraction has 690 states and 870 transitions. [2023-11-21 22:27:08,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states and 870 transitions. [2023-11-21 22:27:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 639. [2023-11-21 22:27:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 418 states have (on average 1.1196172248803828) internal successors, (468), 452 states have internal predecessors, (468), 127 states have call successors, (135), 85 states have call predecessors, (135), 94 states have return successors, (206), 101 states have call predecessors, (206), 110 states have call successors, (206) [2023-11-21 22:27:08,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 809 transitions. [2023-11-21 22:27:08,442 INFO L240 hiAutomatonCegarLoop]: Abstraction has 639 states and 809 transitions. [2023-11-21 22:27:08,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-21 22:27:08,443 INFO L428 stractBuchiCegarLoop]: Abstraction has 639 states and 809 transitions. [2023-11-21 22:27:08,443 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-21 22:27:08,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 639 states and 809 transitions. [2023-11-21 22:27:08,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-21 22:27:08,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 22:27:08,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 22:27:08,450 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 7, 7, 6, 6, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:08,450 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:27:08,451 INFO L748 eck$LassoCheckResult]: Stem: 29120#$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(18, 2);call #Ultimate.allocInit(12, 3); 29084#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 29085#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 29126#$Ultimate##0 ~n := #in~n; 29158#L10 assume !(~n < 1); 29156#L12 assume !(1 == ~n); 29153#L15 call #t~ret4 := fibo2(~n - 1);< 29154#$Ultimate##0 ~n := #in~n; 29168#L20 assume !(~n < 1); 29166#L22 assume !(1 == ~n); 29163#L25 call #t~ret6 := fibo1(~n - 1);< 29164#$Ultimate##0 ~n := #in~n; 29178#L10 assume !(~n < 1); 29176#L12 assume !(1 == ~n); 29173#L15 call #t~ret4 := fibo2(~n - 1);< 29174#$Ultimate##0 ~n := #in~n; 29201#L20 assume !(~n < 1); 29199#L22 assume !(1 == ~n); 29196#L25 call #t~ret6 := fibo1(~n - 1);< 29197#$Ultimate##0 ~n := #in~n; 29224#L10 assume !(~n < 1); 29222#L12 assume !(1 == ~n); 29219#L15 call #t~ret4 := fibo2(~n - 1);< 29220#$Ultimate##0 ~n := #in~n; 29237#L20 assume !(~n < 1); 29234#L22 assume !(1 == ~n); 29230#L25 call #t~ret6 := fibo1(~n - 1);< 29231#$Ultimate##0 ~n := #in~n; 29249#L10 assume !(~n < 1); 29247#L12 assume !(1 == ~n); 29243#L15 call #t~ret4 := fibo2(~n - 1);< 29244#$Ultimate##0 ~n := #in~n; 29250#L20 assume !(~n < 1); 29248#L22 assume 1 == ~n;#res := 1; 29246#fibo2FINAL assume true; 29242#fibo2EXIT >#52#return; 29239#L15-1 call #t~ret5 := fibo2(~n - 2);< 29240#$Ultimate##0 ~n := #in~n; 29245#L20 assume ~n < 1;#res := 0; 29241#fibo2FINAL assume true; 29238#fibo2EXIT >#54#return; 29236#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 29233#fibo1FINAL assume true; 29229#fibo1EXIT >#48#return; 29226#L25-1 call #t~ret7 := fibo1(~n - 2);< 29227#$Ultimate##0 ~n := #in~n; 29235#L10 assume !(~n < 1); 29232#L12 assume 1 == ~n;#res := 1; 29228#fibo1FINAL assume true; 29225#fibo1EXIT >#50#return; 29223#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 29221#fibo2FINAL assume true; 29218#fibo2EXIT >#52#return; 29208#L15-1 call #t~ret5 := fibo2(~n - 2);< 29217#$Ultimate##0 ~n := #in~n; 29476#L20 assume !(~n < 1); 29475#L22 assume !(1 == ~n); 29286#L25 call #t~ret6 := fibo1(~n - 1);< 29474#$Ultimate##0 ~n := #in~n; 29498#L10 assume !(~n < 1); 29494#L12 assume !(1 == ~n); 29114#L15 call #t~ret4 := fibo2(~n - 1);< 29490#$Ultimate##0 ~n := #in~n; 29111#L20 assume !(~n < 1); 29115#L22 assume !(1 == ~n); 29638#L25 call #t~ret6 := fibo1(~n - 1);< 29660#$Ultimate##0 ~n := #in~n; 29659#L10 assume !(~n < 1); 29658#L12 assume !(1 == ~n); 29069#L15 [2023-11-21 22:27:08,451 INFO L750 eck$LassoCheckResult]: Loop: 29069#L15 call #t~ret4 := fibo2(~n - 1);< 29632#$Ultimate##0 ~n := #in~n; 29633#L20 assume !(~n < 1); 29662#L22 assume !(1 == ~n); 29637#L25 call #t~ret6 := fibo1(~n - 1);< 29660#$Ultimate##0 ~n := #in~n; 29659#L10 assume !(~n < 1); 29658#L12 assume !(1 == ~n); 29069#L15 [2023-11-21 22:27:08,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash 265386094, now seen corresponding path program 2 times [2023-11-21 22:27:08,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:08,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022684655] [2023-11-21 22:27:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:08,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:08,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:27:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:27:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:08,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:27:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:27:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:27:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:27:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:27:08,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022684655] [2023-11-21 22:27:08,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022684655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:27:08,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844285031] [2023-11-21 22:27:08,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:27:08,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:27:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:08,772 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:27:08,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2023-11-21 22:27:08,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:27:08,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:27:08,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 22:27:08,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:27:08,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:27:09,125 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-21 22:27:09,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844285031] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:27:09,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:27:09,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 20 [2023-11-21 22:27:09,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606087868] [2023-11-21 22:27:09,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:27:09,126 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 22:27:09,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:09,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 4 times [2023-11-21 22:27:09,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:27:09,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212140044] [2023-11-21 22:27:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:27:09,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:27:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:09,131 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:27:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:27:09,134 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:27:09,289 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:27:09,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:27:09,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:27:09,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:27:09,290 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 22:27:09,290 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:09,290 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:27:09,290 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:27:09,290 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2023-11-21 22:27:09,290 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:27:09,290 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:27:09,291 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:09,304 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:09,307 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:09,310 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:09,313 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:09,316 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:09,319 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:09,322 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:09,401 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:27:09,401 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 22:27:09,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:09,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:09,404 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:09,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2023-11-21 22:27:09,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 22:27:09,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:09,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:09,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:09,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:09,443 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:09,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2023-11-21 22:27:09,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 22:27:09,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 22:27:11,968 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 22:27:11,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:11,972 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 22:27:11,972 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 22:27:11,972 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 22:27:11,972 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 22:27:11,972 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 22:27:11,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:11,973 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 22:27:11,973 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 22:27:11,973 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2023-11-21 22:27:11,973 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 22:27:11,973 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 22:27:11,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:11,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:11,984 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:11,993 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:11,995 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:11,997 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:11,999 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:12,000 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 22:27:12,069 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 22:27:12,069 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 22:27:12,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:12,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:12,070 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:12,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2023-11-21 22:27:12,072 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 [2023-11-21 22:27:12,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 22:27:12,082 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 22:27:12,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 22:27:12,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 22:27:12,082 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 22:27:12,083 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 22:27:12,083 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 22:27:12,086 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 22:27:12,089 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 22:27:12,089 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-21 22:27:12,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 22:27:12,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:27:12,091 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 22:27:12,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Waiting until timeout for monitored process [2023-11-21 22:27:12,092 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 22:27:12,092 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 22:27:12,092 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 22:27:12,092 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-21 22:27:12,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:12,106 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 22:27:12,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:12,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-21 22:27:12,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:12,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:12,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:12,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:12,664 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 [2023-11-21 22:27:12,664 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:12,770 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 670 states and 840 transitions. Complement of second has 19 states. [2023-11-21 22:27:12,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-21 22:27:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:12,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2023-11-21 22:27:12,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-21 22:27:12,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:12,772 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 22:27:12,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:12,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:12,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-21 22:27:12,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:13,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:13,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:13,279 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-21 22:27:13,280 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:13,422 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 670 states and 840 transitions. Complement of second has 21 states. [2023-11-21 22:27:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2023-11-21 22:27:13,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:13,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2023-11-21 22:27:13,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-21 22:27:13,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:13,426 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 22:27:13,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:27:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:13,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-21 22:27:13,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:27:13,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:27:13,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:27:13,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:27:13,986 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-21 22:27:13,987 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:14,136 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 639 states and 809 transitions. cyclomatic complexity: 176. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 1252 states and 1531 transitions. Complement of second has 33 states. [2023-11-21 22:27:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-21 22:27:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:14,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-21 22:27:14,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-21 22:27:14,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:14,139 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2023-11-21 22:27:14,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:14,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2023-11-21 22:27:14,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 22:27:14,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1252 states and 1531 transitions. [2023-11-21 22:27:14,154 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-21 22:27:14,154 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1252 states to 0 states and 0 transitions. [2023-11-21 22:27:14,154 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-21 22:27:14,155 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-21 22:27:14,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-21 22:27:14,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:14,155 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:27:14,155 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:27:14,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:27:14,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 22:27:14,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:27:14,156 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 12 states have internal predecessors, (46), 10 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 22:27:14,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:27:14,156 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-21 22:27:14,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-21 22:27:14,157 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-21 22:27:14,157 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 22:27:14,157 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-21 22:27:14,157 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-21 22:27:14,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-21 22:27:14,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:27:14,158 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:27:14,158 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:27:14,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 22:27:14,158 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:27:14,158 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-21 22:27:14,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-21 22:27:14,159 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-21 22:27:14,159 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-21 22:27:14,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 10:27:14 BoogieIcfgContainer [2023-11-21 22:27:14,166 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 22:27:14,167 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:27:14,167 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:27:14,167 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:27:14,168 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:26:39" (3/4) ... [2023-11-21 22:27:14,170 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:27:14,171 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:27:14,172 INFO L158 Benchmark]: Toolchain (without parser) took 35003.31ms. Allocated memory was 109.1MB in the beginning and 224.4MB in the end (delta: 115.3MB). Free memory was 66.8MB in the beginning and 163.3MB in the end (delta: -96.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 22:27:14,172 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:27:14,173 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.90ms. Allocated memory is still 109.1MB. Free memory was 66.8MB in the beginning and 56.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 22:27:14,173 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.69ms. Allocated memory is still 109.1MB. Free memory was 56.6MB in the beginning and 55.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:27:14,173 INFO L158 Benchmark]: Boogie Preprocessor took 39.89ms. Allocated memory is still 109.1MB. Free memory was 54.9MB in the beginning and 53.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:27:14,174 INFO L158 Benchmark]: RCFGBuilder took 488.07ms. Allocated memory is still 109.1MB. Free memory was 53.5MB in the beginning and 81.7MB in the end (delta: -28.2MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2023-11-21 22:27:14,174 INFO L158 Benchmark]: BuchiAutomizer took 34196.66ms. Allocated memory was 109.1MB in the beginning and 224.4MB in the end (delta: 115.3MB). Free memory was 81.5MB in the beginning and 163.3MB in the end (delta: -81.8MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2023-11-21 22:27:14,174 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 224.4MB. Free memory is still 163.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:27:14,176 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.90ms. Allocated memory is still 109.1MB. Free memory was 66.8MB in the beginning and 56.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.69ms. Allocated memory is still 109.1MB. Free memory was 56.6MB in the beginning and 55.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.89ms. Allocated memory is still 109.1MB. Free memory was 54.9MB in the beginning and 53.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 488.07ms. Allocated memory is still 109.1MB. Free memory was 53.5MB in the beginning and 81.7MB in the end (delta: -28.2MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. * BuchiAutomizer took 34196.66ms. Allocated memory was 109.1MB in the beginning and 224.4MB in the end (delta: 115.3MB). Free memory was 81.5MB in the beginning and 163.3MB in the end (delta: -81.8MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 224.4MB. Free memory is still 163.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (9 trivial, 3 deterministic, 4 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 9 modules have a trivial ranking function, the largest among these consists of 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 34.1s and 11 iterations. TraceHistogramMax:12. Analysis of lassos took 17.9s. Construction of modules took 3.2s. Büchi inclusion checks took 12.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 14. Automata minimization 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 727 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.4s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/19 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1421 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1379 mSDsluCounter, 2522 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1982 mSDsCounter, 815 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4215 IncrementalHoareTripleChecker+Invalid, 5030 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 815 mSolverCounterUnsat, 540 mSDtfsCounter, 4215 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp81 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf92 smp74 dnf100 smp100 tf113 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 34 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-21 22:27:14,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:14,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2023-11-21 22:27:14,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2023-11-21 22:27:14,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-21 22:27:15,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-21 22:27:15,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-21 22:27:15,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-21 22:27:15,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-21 22:27:15,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-21 22:27:16,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-21 22:27:16,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a45c5e5-9cad-42a1-a24f-7ef69efcb9a6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE