./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya --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 e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:16:17,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:16:17,285 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 02:16:17,289 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:16:17,290 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:16:17,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:16:17,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:16:17,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:16:17,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:16:17,314 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:16:17,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:16:17,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:16:17,315 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:16:17,316 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 02:16:17,316 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 02:16:17,317 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 02:16:17,317 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 02:16:17,318 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 02:16:17,318 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 02:16:17,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:16:17,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 02:16:17,320 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:16:17,320 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:16:17,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:16:17,321 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:16:17,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 02:16:17,322 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 02:16:17,322 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 02:16:17,322 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:16:17,323 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:16:17,323 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:16:17,323 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 02:16:17,324 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:16:17,324 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:16:17,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:16:17,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:16:17,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:16:17,325 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 02:16:17,325 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_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0068f83ad7eb3861b59041e8ebf2a38df44c3a60c0fafaf2450f6b793a60fbe [2023-11-29 02:16:17,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:16:17,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:16:17,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:16:17,583 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:16:17,583 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:16:17,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2023-11-29 02:16:20,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:16:20,534 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:16:20,534 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2023-11-29 02:16:20,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/data/094a1bcc2/66a59341771540c79524d01d0198d1c8/FLAGcea7cbe82 [2023-11-29 02:16:20,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/data/094a1bcc2/66a59341771540c79524d01d0198d1c8 [2023-11-29 02:16:20,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:16:20,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:16:20,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:16:20,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:16:20,562 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:16:20,563 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1621c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20, skipping insertion in model container [2023-11-29 02:16:20,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,581 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:16:20,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:16:20,713 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:16:20,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:16:20,738 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:16:20,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20 WrapperNode [2023-11-29 02:16:20,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:16:20,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:16:20,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:16:20,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:16:20,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,751 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,763 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-29 02:16:20,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:16:20,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:16:20,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:16:20,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:16:20,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,773 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,774 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,783 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:16:20,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,784 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,788 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,790 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:16:20,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:16:20,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:16:20,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:16:20,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (1/1) ... [2023-11-29 02:16:20,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:20,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:20,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:20,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 02:16:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:16:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:16:20,864 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-29 02:16:20,865 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-29 02:16:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-29 02:16:20,865 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-29 02:16:20,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:16:20,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:16:20,922 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:16:20,924 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:16:21,024 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:16:21,034 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:16:21,035 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 02:16:21,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:16:21 BoogieIcfgContainer [2023-11-29 02:16:21,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:16:21,037 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 02:16:21,037 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 02:16:21,040 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 02:16:21,041 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:16:21,041 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 02:16:20" (1/3) ... [2023-11-29 02:16:21,042 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74adcba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 02:16:21, skipping insertion in model container [2023-11-29 02:16:21,042 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:16:21,042 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:16:20" (2/3) ... [2023-11-29 02:16:21,043 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74adcba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 02:16:21, skipping insertion in model container [2023-11-29 02:16:21,043 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:16:21,043 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:16:21" (3/3) ... [2023-11-29 02:16:21,044 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_6-1.c [2023-11-29 02:16:21,092 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 02:16:21,092 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 02:16:21,092 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 02:16:21,092 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 02:16:21,092 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 02:16:21,092 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 02:16:21,093 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 02:16:21,093 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 02:16:21,096 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) [2023-11-29 02:16:21,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 02:16:21,115 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:21,115 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:21,120 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 02:16:21,120 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:21,120 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 02:16:21,121 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) [2023-11-29 02:16:21,124 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 02:16:21,124 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:21,124 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:21,125 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 02:16:21,125 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:21,131 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-29 02:16:21,132 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 [2023-11-29 02:16:21,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-29 02:16:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:21,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520984332] [2023-11-29 02:16:21,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:21,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:21,221 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:16:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:21,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:16:21,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-29 02:16:21,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232280969] [2023-11-29 02:16:21,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:21,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:21,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:16:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:21,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:16:21,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:21,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-29 02:16:21,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:21,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507544447] [2023-11-29 02:16:21,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:21,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:21,287 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:16:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:21,303 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:16:21,506 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:21,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:21,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:21,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:21,507 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:16:21,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:21,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:21,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration1_Loop [2023-11-29 02:16:21,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:21,508 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:21,525 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,537 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,540 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,543 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,546 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,549 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,553 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,651 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:21,652 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:16:21,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:21,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:21,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 02:16:21,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:21,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:21,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:21,692 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:21,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:21,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:21,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:21,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 02:16:21,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:21,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:21,716 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:21,716 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:21,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:21,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:21,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:21,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 02:16:21,738 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:21,738 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:21,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:21,752 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:21,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 02:16:21,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:21,757 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:21,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 02:16:21,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:21,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:21,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:21,780 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:21,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 02:16:21,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:21,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:21,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 02:16:21,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:21,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:21,804 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:21,804 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:21,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 02:16:21,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:21,809 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:21,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 02:16:21,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:21,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:21,827 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:21,828 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:21,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 02:16:21,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:21,833 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:21,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 02:16:21,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:21,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:21,849 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:21,849 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:21,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-29 02:16:21,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:21,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:21,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 02:16:21,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:21,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:21,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 02:16:21,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:21,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:21,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 02:16:21,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:16:21,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:21,945 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:16:21,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-29 02:16:21,949 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:21,949 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:21,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:21,949 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:21,949 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:16:21,950 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:21,950 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:21,950 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:21,950 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration1_Loop [2023-11-29 02:16:21,950 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:21,950 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:21,952 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,955 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,960 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,962 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,969 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,979 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:21,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:22,047 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:22,051 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:16:22,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:22,053 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:22,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 02:16:22,065 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 [2023-11-29 02:16:22,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:22,075 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:22,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:22,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:22,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:22,078 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:22,078 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:22,080 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:22,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:22,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:22,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:22,085 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:22,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-29 02:16:22,088 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 [2023-11-29 02:16:22,098 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:22,098 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:22,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:22,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:22,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:22,099 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:22,099 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:22,101 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:22,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-11-29 02:16:22,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:22,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:22,106 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:22,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-29 02:16:22,108 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 [2023-11-29 02:16:22,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:22,119 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:22,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:22,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:22,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:22,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:22,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:22,121 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:22,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-11-29 02:16:22,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:22,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:22,125 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:22,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-29 02:16:22,127 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 [2023-11-29 02:16:22,137 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:22,137 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:22,137 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:22,137 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:22,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:22,138 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:22,138 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:22,140 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:22,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-29 02:16:22,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:22,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:22,143 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:22,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-29 02:16:22,146 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 [2023-11-29 02:16:22,156 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:22,156 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:22,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:22,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:22,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:22,157 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:22,157 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:22,158 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:22,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-11-29 02:16:22,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:22,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:22,163 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:22,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-29 02:16:22,165 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 [2023-11-29 02:16:22,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:22,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:22,176 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:22,176 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:22,176 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:22,177 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:22,177 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:22,181 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:16:22,185 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:16:22,185 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 02:16:22,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:22,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:22,216 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:22,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-29 02:16:22,218 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:16:22,218 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:16:22,219 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:16:22,219 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-29 02:16:22,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-11-29 02:16:22,228 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:16:22,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:22,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:16:22,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:22,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:22,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:22,417 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 [2023-11-29 02:16:22,419 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) [2023-11-29 02:16:22,593 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. [2023-11-29 02:16:22,595 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 [2023-11-29 02:16:22,600 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) [2023-11-29 02:16:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-29 02:16:22,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-29 02:16:22,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:22,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-29 02:16:22,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:22,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-29 02:16:22,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:22,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-29 02:16:22,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 02:16:22,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-29 02:16:22,621 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-29 02:16:22,622 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-29 02:16:22,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-29 02:16:22,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:22,623 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-29 02:16:22,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-29 02:16:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-29 02:16:22,653 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) [2023-11-29 02:16:22,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-29 02:16:22,656 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-29 02:16:22,656 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-29 02:16:22,656 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 02:16:22,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-29 02:16:22,658 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 02:16:22,658 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:22,658 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:22,659 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:22,659 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:22,660 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 := 6; 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#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-29 02:16:22,660 INFO L750 eck$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 [2023-11-29 02:16:22,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:22,660 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-29 02:16:22,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:22,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685021978] [2023-11-29 02:16:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:22,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:22,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:16:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:16:22,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:22,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685021978] [2023-11-29 02:16:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685021978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:22,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:16:22,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:16:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843942082] [2023-11-29 02:16:22,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:22,797 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:16:22,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-29 02:16:22,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:22,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152196537] [2023-11-29 02:16:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:22,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:16:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:16:22,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:22,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152196537] [2023-11-29 02:16:22,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152196537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:16:22,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:16:22,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:16:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093424953] [2023-11-29 02:16:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:16:22,870 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:16:22,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:22,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:16:22,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:16:22,873 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) [2023-11-29 02:16:22,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:22,941 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-29 02:16:22,941 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-29 02:16:22,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 02:16:22,948 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-29 02:16:22,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-29 02:16:22,948 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-29 02:16:22,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-29 02:16:22,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:22,949 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-29 02:16:22,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-29 02:16:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-29 02:16:22,956 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) [2023-11-29 02:16:22,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-29 02:16:22,957 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-29 02:16:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:16:22,959 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-29 02:16:22,959 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 02:16:22,959 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-29 02:16:22,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 02:16:22,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:22,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:22,962 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:22,962 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:22,962 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$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 [2023-11-29 02:16:22,963 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 [2023-11-29 02:16:22,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:22,963 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-29 02:16:22,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:22,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914642799] [2023-11-29 02:16:22,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:23,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:16:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:23,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-29 02:16:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914642799] [2023-11-29 02:16:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914642799] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397153542] [2023-11-29 02:16:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:23,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:23,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,098 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:16:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:23,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:16:23,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:23,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:23,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:23,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397153542] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:23,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:23,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-29 02:16:23,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443439654] [2023-11-29 02:16:23,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:23,306 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:16:23,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:23,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-29 02:16:23,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:23,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601503966] [2023-11-29 02:16:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:23,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:23,313 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:16:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:23,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:16:23,494 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:23,494 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:23,494 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:23,494 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:23,494 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:16:23,494 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,494 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:23,494 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:23,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration3_Loop [2023-11-29 02:16:23,495 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:23,495 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:23,496 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,499 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,501 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,503 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,505 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,508 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,513 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,516 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,518 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,573 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:23,573 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:16:23,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,575 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-29 02:16:23,581 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:23,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:23,596 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:23,596 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:23,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-29 02:16:23,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-29 02:16:23,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:23,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:23,619 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:23,619 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:23,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-29 02:16:23,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,624 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-29 02:16:23,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:23,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:23,642 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:23,642 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:23,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:23,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,648 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-29 02:16:23,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:23,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:23,669 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:23,669 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:23,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-11-29 02:16:23,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,674 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-29 02:16:23,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:23,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:23,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:23,689 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:23,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-29 02:16:23,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,693 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:23,696 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:23,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-29 02:16:23,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-29 02:16:23,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,711 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-29 02:16:23,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:16:23,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:23,728 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:16:23,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-29 02:16:23,731 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:23,731 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:23,731 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:23,731 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:23,731 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:16:23,731 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,731 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:23,731 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:23,731 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration3_Loop [2023-11-29 02:16:23,731 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:23,732 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:23,733 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,736 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,739 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,741 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,746 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,749 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,751 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,754 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:23,799 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:23,799 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:16:23,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,801 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-29 02:16:23,803 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 [2023-11-29 02:16:23,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:23,814 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:23,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:23,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:23,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:23,815 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:23,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:23,817 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:23,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:23,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,821 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-29 02:16:23,824 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 [2023-11-29 02:16:23,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:23,834 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:23,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:23,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:23,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:23,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:23,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:23,837 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:23,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:23,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,841 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-29 02:16:23,843 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 [2023-11-29 02:16:23,853 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:23,854 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:23,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:23,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:23,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:23,854 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:23,854 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:23,856 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:23,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-29 02:16:23,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,859 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-29 02:16:23,862 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 [2023-11-29 02:16:23,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:23,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:23,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:23,873 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:23,873 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:23,873 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:23,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:23,876 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:23,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:23,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,880 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-29 02:16:23,883 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 [2023-11-29 02:16:23,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:23,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:23,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:23,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:23,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:23,895 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:23,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:23,897 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:16:23,920 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:16:23,920 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 02:16:23,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:23,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:23,930 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:23,932 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:16:23,932 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:16:23,932 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:16:23,932 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-29 02:16:23,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-29 02:16:23,936 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:16:23,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-29 02:16:23,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:23,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:16:23,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:24,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:24,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 02:16:24,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:24,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:24,191 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 [2023-11-29 02:16:24,191 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) [2023-11-29 02:16:24,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-29 02:16:24,630 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. [2023-11-29 02:16:24,630 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 [2023-11-29 02:16:24,631 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) [2023-11-29 02:16:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-29 02:16:24,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-29 02:16:24,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:24,633 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-29 02:16:24,634 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:24,634 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-29 02:16:24,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:24,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-29 02:16:24,642 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 02:16:24,648 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-29 02:16:24,648 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-29 02:16:24,649 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-29 02:16:24,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-29 02:16:24,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:24,651 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-29 02:16:24,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-29 02:16:24,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-29 02:16:24,666 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) [2023-11-29 02:16:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-29 02:16:24,668 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-29 02:16:24,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:24,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:16:24,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:16:24,669 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) [2023-11-29 02:16:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:24,886 INFO L93 Difference]: Finished difference Result 209 states and 276 transitions. [2023-11-29 02:16:24,886 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 209 states and 276 transitions. [2023-11-29 02:16:24,891 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 02:16:24,897 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 209 states to 200 states and 267 transitions. [2023-11-29 02:16:24,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 129 [2023-11-29 02:16:24,898 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 129 [2023-11-29 02:16:24,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 267 transitions. [2023-11-29 02:16:24,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:24,898 INFO L218 hiAutomatonCegarLoop]: Abstraction has 200 states and 267 transitions. [2023-11-29 02:16:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 267 transitions. [2023-11-29 02:16:24,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 185. [2023-11-29 02:16:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 124 states have internal predecessors, (142), 43 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (62), 37 states have call predecessors, (62), 41 states have call successors, (62) [2023-11-29 02:16:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2023-11-29 02:16:24,917 INFO L240 hiAutomatonCegarLoop]: Abstraction has 185 states and 249 transitions. [2023-11-29 02:16:24,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:16:24,919 INFO L428 stractBuchiCegarLoop]: Abstraction has 185 states and 249 transitions. [2023-11-29 02:16:24,919 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 02:16:24,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 185 states and 249 transitions. [2023-11-29 02:16:24,921 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 02:16:24,921 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:24,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:24,923 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] [2023-11-29 02:16:24,923 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:24,924 INFO L748 eck$LassoCheckResult]: Stem: 1299#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1276#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 1277#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1302#$Ultimate##0 ~n := #in~n; 1342#L10 assume !(~n < 1); 1341#L12 assume !(1 == ~n); 1241#L15 call #t~ret4 := fibo2(~n - 1);< 1340#$Ultimate##0 ~n := #in~n; 1339#L20 assume !(~n < 1); 1240#L22 assume !(1 == ~n); 1242#L25 call #t~ret6 := fibo1(~n - 1);< 1274#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1288#L12 assume !(1 == ~n); 1259#L15 call #t~ret4 := fibo2(~n - 1);< 1294#$Ultimate##0 ~n := #in~n; 1296#L20 assume !(~n < 1); 1297#L22 assume !(1 == ~n); 1278#L25 call #t~ret6 := fibo1(~n - 1);< 1333#$Ultimate##0 ~n := #in~n; 1334#L10 assume !(~n < 1); 1344#L12 assume !(1 == ~n); 1345#L15 call #t~ret4 := fibo2(~n - 1);< 1353#$Ultimate##0 ~n := #in~n; 1357#L20 assume ~n < 1;#res := 0; 1356#fibo2FINAL assume true; 1352#fibo2EXIT >#52#return; 1349#L15-1 call #t~ret5 := fibo2(~n - 2);< 1350#$Ultimate##0 ~n := #in~n; 1354#L20 assume ~n < 1;#res := 0; 1351#fibo2FINAL assume true; 1348#fibo2EXIT >#54#return; 1346#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1347#fibo1FINAL assume true; 1414#fibo1EXIT >#48#return; 1267#L25-1 call #t~ret7 := fibo1(~n - 2);< 1332#$Ultimate##0 ~n := #in~n; 1371#L10 assume ~n < 1;#res := 0; 1420#fibo1FINAL assume true; 1265#fibo1EXIT >#50#return; 1269#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1280#fibo2FINAL assume true; 1289#fibo2EXIT >#52#return; 1298#L15-1 call #t~ret5 := fibo2(~n - 2);< 1362#$Ultimate##0 [2023-11-29 02:16:24,924 INFO L750 eck$LassoCheckResult]: Loop: 1362#$Ultimate##0 ~n := #in~n; 1417#L20 assume !(~n < 1); 1415#L22 assume !(1 == ~n); 1272#L25 call #t~ret6 := fibo1(~n - 1);< 1260#$Ultimate##0 ~n := #in~n; 1273#L10 assume !(~n < 1); 1293#L12 assume !(1 == ~n); 1361#L15 call #t~ret4 := fibo2(~n - 1);< 1362#$Ultimate##0 [2023-11-29 02:16:24,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:24,924 INFO L85 PathProgramCache]: Analyzing trace with hash 441703261, now seen corresponding path program 1 times [2023-11-29 02:16:24,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:24,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484538938] [2023-11-29 02:16:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:24,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:16:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:25,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:25,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:25,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:16:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 02:16:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:25,071 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 02:16:25,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:25,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484538938] [2023-11-29 02:16:25,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484538938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:25,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010304383] [2023-11-29 02:16:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:25,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:25,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:25,076 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:25,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 02:16:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:25,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:16:25,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:16:25,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:16:25,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010304383] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:25,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:25,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 20 [2023-11-29 02:16:25,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919135514] [2023-11-29 02:16:25,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:25,687 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:16:25,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2023-11-29 02:16:25,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586435576] [2023-11-29 02:16:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:25,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:16:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:25,694 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:16:25,794 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:25,794 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:25,794 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:25,794 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:25,795 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:16:25,795 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:25,795 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:25,795 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:25,795 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration4_Loop [2023-11-29 02:16:25,795 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:25,795 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:25,796 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:25,798 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:25,800 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:25,803 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:25,805 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:25,807 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:25,808 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:25,816 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:25,862 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:25,863 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:16:25,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:25,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:25,868 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:25,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-29 02:16:25,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:25,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:25,885 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:25,885 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:25,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2023-11-29 02:16:25,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:25,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:25,891 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:25,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-29 02:16:25,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:25,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:25,909 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:25,909 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:25,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-11-29 02:16:25,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:25,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:25,913 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:25,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-29 02:16:25,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:25,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:25,931 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:25,931 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:25,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2023-11-29 02:16:25,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:25,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:25,936 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:25,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:25,940 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:25,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-29 02:16:25,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:25,954 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:25,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2023-11-29 02:16:25,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:25,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:25,959 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:25,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-29 02:16:25,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:25,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:25,976 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:25,977 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:25,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-29 02:16:25,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:25,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:25,984 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:25,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:25,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:25,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-29 02:16:26,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:26,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:26,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-11-29 02:16:26,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,010 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-29 02:16:26,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:26,013 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:26,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-11-29 02:16:26,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,028 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-29 02:16:26,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:16:26,032 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:26,096 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:16:26,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2023-11-29 02:16:26,099 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:26,099 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:26,099 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:26,099 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:26,099 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:16:26,099 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,100 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:26,100 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:26,100 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration4_Loop [2023-11-29 02:16:26,100 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:26,100 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:26,101 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:26,103 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:26,105 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:26,107 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:26,109 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:26,110 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:26,112 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:26,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:26,170 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:26,170 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:16:26,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,171 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-29 02:16:26,184 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 [2023-11-29 02:16:26,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:26,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:26,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:26,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:26,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:26,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:26,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:26,199 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:26,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:26,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,203 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-29 02:16:26,205 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 [2023-11-29 02:16:26,215 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:26,215 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:26,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:26,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:26,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:26,216 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:26,216 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:26,217 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:26,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2023-11-29 02:16:26,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,221 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-29 02:16:26,224 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 [2023-11-29 02:16:26,234 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:26,234 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:26,234 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:26,234 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:26,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:26,234 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:26,234 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:26,236 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:26,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2023-11-29 02:16:26,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,240 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-29 02:16:26,243 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 [2023-11-29 02:16:26,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:26,253 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:26,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:26,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:26,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:26,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:26,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:26,255 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:26,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-11-29 02:16:26,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,259 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-29 02:16:26,262 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 [2023-11-29 02:16:26,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:26,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:26,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:26,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:26,272 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:26,273 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:26,273 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:26,274 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:26,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-11-29 02:16:26,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,278 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-29 02:16:26,280 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 [2023-11-29 02:16:26,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:26,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:26,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:26,291 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:26,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:26,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:26,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:26,292 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:26,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2023-11-29 02:16:26,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,296 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-29 02:16:26,299 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 [2023-11-29 02:16:26,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:26,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:26,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:26,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:26,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:26,311 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:26,311 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:26,313 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:16:26,315 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:16:26,316 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 02:16:26,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:26,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:26,318 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:26,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-29 02:16:26,328 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:16:26,328 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:16:26,328 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:16:26,329 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-29 02:16:26,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2023-11-29 02:16:26,332 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:16:26,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:26,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:16:26,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:26,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:26,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:26,789 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 [2023-11-29 02:16:26,790 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 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) [2023-11-29 02:16:26,965 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. 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 691 states and 965 transitions. Complement of second has 26 states. [2023-11-29 02:16:26,966 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 [2023-11-29 02:16:26,966 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) [2023-11-29 02:16:26,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-29 02:16:26,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-29 02:16:26,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:26,967 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:16:26,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:27,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:16:27,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:27,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-11-29 02:16:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:27,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:27,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:27,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:27,410 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 [2023-11-29 02:16:27,410 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 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) [2023-11-29 02:16:27,562 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. 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 691 states and 965 transitions. Complement of second has 26 states. [2023-11-29 02:16:27,563 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 [2023-11-29 02:16:27,563 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) [2023-11-29 02:16:27,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-29 02:16:27,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-29 02:16:27,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:27,564 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:16:27,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:27,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:16:27,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:27,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:27,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:27,987 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 [2023-11-29 02:16:27,987 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69 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) [2023-11-29 02:16:28,145 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 185 states and 249 transitions. cyclomatic complexity: 69. 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 576 states and 790 transitions. Complement of second has 25 states. [2023-11-29 02:16:28,146 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 [2023-11-29 02:16:28,147 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) [2023-11-29 02:16:28,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-29 02:16:28,147 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-29 02:16:28,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:28,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2023-11-29 02:16:28,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:28,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2023-11-29 02:16:28,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:28,150 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 576 states and 790 transitions. [2023-11-29 02:16:28,158 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-29 02:16:28,168 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 576 states to 465 states and 663 transitions. [2023-11-29 02:16:28,168 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 204 [2023-11-29 02:16:28,169 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 235 [2023-11-29 02:16:28,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 465 states and 663 transitions. [2023-11-29 02:16:28,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:28,171 INFO L218 hiAutomatonCegarLoop]: Abstraction has 465 states and 663 transitions. [2023-11-29 02:16:28,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states and 663 transitions. [2023-11-29 02:16:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 390. [2023-11-29 02:16:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 259 states have (on average 1.2702702702702702) internal successors, (329), 282 states have internal predecessors, (329), 76 states have call successors, (79), 58 states have call predecessors, (79), 55 states have return successors, (123), 49 states have call predecessors, (123), 74 states have call successors, (123) [2023-11-29 02:16:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 531 transitions. [2023-11-29 02:16:28,203 INFO L240 hiAutomatonCegarLoop]: Abstraction has 390 states and 531 transitions. [2023-11-29 02:16:28,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:28,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 02:16:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:16:28,204 INFO L87 Difference]: Start difference. First operand 390 states and 531 transitions. Second operand has 20 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 17 states have internal predecessors, (50), 13 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-29 02:16:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:28,605 INFO L93 Difference]: Finished difference Result 469 states and 660 transitions. [2023-11-29 02:16:28,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 469 states and 660 transitions. [2023-11-29 02:16:28,613 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-29 02:16:28,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 469 states to 430 states and 616 transitions. [2023-11-29 02:16:28,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 237 [2023-11-29 02:16:28,621 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 238 [2023-11-29 02:16:28,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 616 transitions. [2023-11-29 02:16:28,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:28,622 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 616 transitions. [2023-11-29 02:16:28,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 616 transitions. [2023-11-29 02:16:28,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 381. [2023-11-29 02:16:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 247 states have (on average 1.2267206477732793) internal successors, (303), 276 states have internal predecessors, (303), 79 states have call successors, (82), 53 states have call predecessors, (82), 55 states have return successors, (138), 51 states have call predecessors, (138), 77 states have call successors, (138) [2023-11-29 02:16:28,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 523 transitions. [2023-11-29 02:16:28,642 INFO L240 hiAutomatonCegarLoop]: Abstraction has 381 states and 523 transitions. [2023-11-29 02:16:28,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 02:16:28,643 INFO L428 stractBuchiCegarLoop]: Abstraction has 381 states and 523 transitions. [2023-11-29 02:16:28,644 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 02:16:28,644 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 381 states and 523 transitions. [2023-11-29 02:16:28,647 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-29 02:16:28,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:28,647 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:28,650 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:28,650 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] [2023-11-29 02:16:28,651 INFO L748 eck$LassoCheckResult]: Stem: 5272#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5231#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 5232#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5279#$Ultimate##0 ~n := #in~n; 5329#L10 assume !(~n < 1); 5328#L12 assume !(1 == ~n); 5324#L15 call #t~ret4 := fibo2(~n - 1);< 5327#$Ultimate##0 ~n := #in~n; 5326#L20 assume !(~n < 1); 5325#L22 assume !(1 == ~n); 5320#L25 call #t~ret6 := fibo1(~n - 1);< 5323#$Ultimate##0 ~n := #in~n; 5322#L10 assume !(~n < 1); 5321#L12 assume !(1 == ~n); 5308#L15 call #t~ret4 := fibo2(~n - 1);< 5318#$Ultimate##0 ~n := #in~n; 5317#L20 assume !(~n < 1); 5313#L22 assume !(1 == ~n); 5251#L25 call #t~ret6 := fibo1(~n - 1);< 5309#$Ultimate##0 ~n := #in~n; 5315#L10 assume !(~n < 1); 5430#L12 assume !(1 == ~n); 5382#L15 call #t~ret4 := fibo2(~n - 1);< 5429#$Ultimate##0 ~n := #in~n; 5496#L20 assume !(~n < 1); 5494#L22 assume 1 == ~n;#res := 1; 5492#fibo2FINAL assume true; 5427#fibo2EXIT >#52#return; 5196#L15-1 call #t~ret5 := fibo2(~n - 2);< 5201#$Ultimate##0 ~n := #in~n; 5202#L20 assume ~n < 1;#res := 0; 5197#fibo2FINAL assume true; 5498#fibo2EXIT >#54#return; 5495#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5493#fibo1FINAL assume true; 5421#fibo1EXIT >#48#return; 5398#L25-1 call #t~ret7 := fibo1(~n - 2);< 5405#$Ultimate##0 ~n := #in~n; 5503#L10 assume ~n < 1;#res := 0; 5501#fibo1FINAL assume true; 5487#fibo1EXIT >#50#return; 5444#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5485#fibo2FINAL assume true; 5483#fibo2EXIT >#52#return; 5417#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 [2023-11-29 02:16:28,651 INFO L750 eck$LassoCheckResult]: Loop: 5422#$Ultimate##0 ~n := #in~n; 5207#L20 assume !(~n < 1); 5415#L22 assume !(1 == ~n); 5222#L25 call #t~ret6 := fibo1(~n - 1);< 5437#$Ultimate##0 ~n := #in~n; 5432#L10 assume !(~n < 1); 5433#L12 assume !(1 == ~n); 5205#L15 call #t~ret4 := fibo2(~n - 1);< 5203#$Ultimate##0 ~n := #in~n; 5207#L20 assume !(~n < 1); 5415#L22 assume !(1 == ~n); 5222#L25 call #t~ret6 := fibo1(~n - 1);< 5437#$Ultimate##0 ~n := #in~n; 5432#L10 assume !(~n < 1); 5433#L12 assume !(1 == ~n); 5205#L15 call #t~ret4 := fibo2(~n - 1);< 5203#$Ultimate##0 ~n := #in~n; 5206#L20 assume !(~n < 1); 5486#L22 assume 1 == ~n;#res := 1; 5484#fibo2FINAL assume true; 5468#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 ~n := #in~n; 5423#L20 assume ~n < 1;#res := 0; 5471#fibo2FINAL assume true; 5465#fibo2EXIT >#54#return; 5450#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5446#fibo1FINAL assume true; 5438#fibo1EXIT >#48#return; 5439#L25-1 call #t~ret7 := fibo1(~n - 2);< 5445#$Ultimate##0 ~n := #in~n; 5482#L10 assume !(~n < 1); 5481#L12 assume !(1 == ~n); 5447#L15 call #t~ret4 := fibo2(~n - 1);< 5459#$Ultimate##0 ~n := #in~n; 5458#L20 assume !(~n < 1); 5456#L22 assume !(1 == ~n); 5442#L25 call #t~ret6 := fibo1(~n - 1);< 5445#$Ultimate##0 ~n := #in~n; 5482#L10 assume !(~n < 1); 5481#L12 assume !(1 == ~n); 5447#L15 call #t~ret4 := fibo2(~n - 1);< 5459#$Ultimate##0 ~n := #in~n; 5458#L20 assume !(~n < 1); 5456#L22 assume 1 == ~n;#res := 1; 5457#fibo2FINAL assume true; 5467#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 ~n := #in~n; 5423#L20 assume ~n < 1;#res := 0; 5471#fibo2FINAL assume true; 5465#fibo2EXIT >#54#return; 5450#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5446#fibo1FINAL assume true; 5438#fibo1EXIT >#48#return; 5439#L25-1 call #t~ret7 := fibo1(~n - 2);< 5445#$Ultimate##0 ~n := #in~n; 5482#L10 assume ~n < 1;#res := 0; 5476#fibo1FINAL assume true; 5489#fibo1EXIT >#50#return; 5443#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5506#fibo2FINAL assume true; 5463#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 ~n := #in~n; 5423#L20 assume ~n < 1;#res := 0; 5471#fibo2FINAL assume true; 5465#fibo2EXIT >#54#return; 5450#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5446#fibo1FINAL assume true; 5438#fibo1EXIT >#50#return; 5443#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5506#fibo2FINAL assume true; 5463#fibo2EXIT >#52#return; 5418#L15-1 call #t~ret5 := fibo2(~n - 2);< 5422#$Ultimate##0 [2023-11-29 02:16:28,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:28,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1560322136, now seen corresponding path program 1 times [2023-11-29 02:16:28,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753335465] [2023-11-29 02:16:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:28,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:28,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:16:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:28,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:16:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 02:16:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:28,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753335465] [2023-11-29 02:16:28,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753335465] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:28,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003912379] [2023-11-29 02:16:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:28,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:28,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:28,900 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:28,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 02:16:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:28,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 02:16:28,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:16:29,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:16:29,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003912379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:29,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:29,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 20 [2023-11-29 02:16:29,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845427342] [2023-11-29 02:16:29,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:29,224 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:16:29,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash -96284739, now seen corresponding path program 1 times [2023-11-29 02:16:29,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:29,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797453621] [2023-11-29 02:16:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 02:16:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:16:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:16:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 02:16:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-29 02:16:29,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:29,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797453621] [2023-11-29 02:16:29,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797453621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:29,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12188220] [2023-11-29 02:16:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:29,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:29,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:29,505 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:29,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 02:16:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:29,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:16:29,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-29 02:16:29,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-29 02:16:30,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12188220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:30,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:30,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-29 02:16:30,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535762282] [2023-11-29 02:16:30,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:30,081 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:16:30,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:30,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 02:16:30,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:16:30,082 INFO L87 Difference]: Start difference. First operand 381 states and 523 transitions. cyclomatic complexity: 149 Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 16 states have internal predecessors, (43), 10 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 02:16:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:30,340 INFO L93 Difference]: Finished difference Result 412 states and 577 transitions. [2023-11-29 02:16:30,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 412 states and 577 transitions. [2023-11-29 02:16:30,346 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-29 02:16:30,352 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 412 states to 412 states and 577 transitions. [2023-11-29 02:16:30,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 223 [2023-11-29 02:16:30,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 223 [2023-11-29 02:16:30,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 412 states and 577 transitions. [2023-11-29 02:16:30,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:30,353 INFO L218 hiAutomatonCegarLoop]: Abstraction has 412 states and 577 transitions. [2023-11-29 02:16:30,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states and 577 transitions. [2023-11-29 02:16:30,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 394. [2023-11-29 02:16:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 255 states have (on average 1.219607843137255) internal successors, (311), 286 states have internal predecessors, (311), 80 states have call successors, (83), 54 states have call predecessors, (83), 59 states have return successors, (145), 53 states have call predecessors, (145), 78 states have call successors, (145) [2023-11-29 02:16:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 539 transitions. [2023-11-29 02:16:30,373 INFO L240 hiAutomatonCegarLoop]: Abstraction has 394 states and 539 transitions. [2023-11-29 02:16:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:16:30,374 INFO L428 stractBuchiCegarLoop]: Abstraction has 394 states and 539 transitions. [2023-11-29 02:16:30,374 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-29 02:16:30,374 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 394 states and 539 transitions. [2023-11-29 02:16:30,378 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-29 02:16:30,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:30,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:30,380 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:30,380 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2023-11-29 02:16:30,381 INFO L748 eck$LassoCheckResult]: Stem: 7080#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7044#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 7045#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 7082#$Ultimate##0 ~n := #in~n; 7145#L10 assume !(~n < 1); 7144#L12 assume !(1 == ~n); 7140#L15 call #t~ret4 := fibo2(~n - 1);< 7143#$Ultimate##0 ~n := #in~n; 7142#L20 assume !(~n < 1); 7141#L22 assume !(1 == ~n); 7136#L25 call #t~ret6 := fibo1(~n - 1);< 7139#$Ultimate##0 ~n := #in~n; 7138#L10 assume !(~n < 1); 7137#L12 assume !(1 == ~n); 7125#L15 call #t~ret4 := fibo2(~n - 1);< 7135#$Ultimate##0 ~n := #in~n; 7134#L20 assume !(~n < 1); 7131#L22 assume !(1 == ~n); 7055#L25 call #t~ret6 := fibo1(~n - 1);< 7126#$Ultimate##0 ~n := #in~n; 7108#L10 assume !(~n < 1); 7109#L12 assume !(1 == ~n); 7100#L15 call #t~ret4 := fibo2(~n - 1);< 7101#$Ultimate##0 ~n := #in~n; 7123#L20 assume !(~n < 1); 7124#L22 assume !(1 == ~n); 7057#L25 call #t~ret6 := fibo1(~n - 1);< 7126#$Ultimate##0 ~n := #in~n; 7132#L10 assume !(~n < 1); 7234#L12 assume 1 == ~n;#res := 1; 7232#fibo1FINAL assume true; 7230#fibo1EXIT >#48#return; 7042#L25-1 call #t~ret7 := fibo1(~n - 2);< 7215#$Ultimate##0 ~n := #in~n; 7339#L10 assume ~n < 1;#res := 0; 7340#fibo1FINAL assume true; 7039#fibo1EXIT >#50#return; 7043#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7346#fibo2FINAL assume true; 7266#fibo2EXIT >#52#return; 7223#L15-1 [2023-11-29 02:16:30,381 INFO L750 eck$LassoCheckResult]: Loop: 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7282#L20 assume !(~n < 1); 7222#L22 assume !(1 == ~n); 7228#L25 call #t~ret6 := fibo1(~n - 1);< 7221#$Ultimate##0 ~n := #in~n; 7303#L10 assume !(~n < 1); 7302#L12 assume !(1 == ~n); 7226#L15 call #t~ret4 := fibo2(~n - 1);< 7277#$Ultimate##0 ~n := #in~n; 7282#L20 assume !(~n < 1); 7222#L22 assume !(1 == ~n); 7228#L25 call #t~ret6 := fibo1(~n - 1);< 7221#$Ultimate##0 ~n := #in~n; 7303#L10 assume !(~n < 1); 7302#L12 assume !(1 == ~n); 7226#L15 call #t~ret4 := fibo2(~n - 1);< 7277#$Ultimate##0 ~n := #in~n; 7322#L20 assume !(~n < 1); 7321#L22 assume 1 == ~n;#res := 1; 7320#fibo2FINAL assume true; 7279#fibo2EXIT >#52#return; 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7297#L20 assume ~n < 1;#res := 0; 7298#fibo2FINAL assume true; 7267#fibo2EXIT >#54#return; 7265#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7260#fibo1FINAL assume true; 7252#fibo1EXIT >#48#return; 7255#L25-1 call #t~ret7 := fibo1(~n - 2);< 7263#$Ultimate##0 ~n := #in~n; 7310#L10 assume !(~n < 1); 7311#L12 assume !(1 == ~n); 7262#L15 call #t~ret4 := fibo2(~n - 1);< 7275#$Ultimate##0 ~n := #in~n; 7327#L20 assume !(~n < 1); 7325#L22 assume !(1 == ~n); 7256#L25 call #t~ret6 := fibo1(~n - 1);< 7263#$Ultimate##0 ~n := #in~n; 7310#L10 assume !(~n < 1); 7311#L12 assume !(1 == ~n); 7262#L15 call #t~ret4 := fibo2(~n - 1);< 7275#$Ultimate##0 ~n := #in~n; 7327#L20 assume !(~n < 1); 7325#L22 assume 1 == ~n;#res := 1; 7323#fibo2FINAL assume true; 7281#fibo2EXIT >#52#return; 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7297#L20 assume ~n < 1;#res := 0; 7298#fibo2FINAL assume true; 7267#fibo2EXIT >#54#return; 7265#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7260#fibo1FINAL assume true; 7252#fibo1EXIT >#48#return; 7255#L25-1 call #t~ret7 := fibo1(~n - 2);< 7263#$Ultimate##0 ~n := #in~n; 7310#L10 assume !(~n < 1); 7311#L12 assume 1 == ~n;#res := 1; 7296#fibo1FINAL assume true; 7284#fibo1EXIT >#50#return; 7258#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7273#fibo2FINAL assume true; 7269#fibo2EXIT >#52#return; 7223#L15-1 call #t~ret5 := fibo2(~n - 2);< 7271#$Ultimate##0 ~n := #in~n; 7297#L20 assume ~n < 1;#res := 0; 7298#fibo2FINAL assume true; 7267#fibo2EXIT >#54#return; 7265#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7260#fibo1FINAL assume true; 7252#fibo1EXIT >#50#return; 7258#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7273#fibo2FINAL assume true; 7269#fibo2EXIT >#52#return; 7223#L15-1 [2023-11-29 02:16:30,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1100171425, now seen corresponding path program 1 times [2023-11-29 02:16:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684431653] [2023-11-29 02:16:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:30,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:30,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 02:16:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:30,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 23 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 02:16:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:30,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684431653] [2023-11-29 02:16:30,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684431653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:30,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029116953] [2023-11-29 02:16:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:30,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:30,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:30,593 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:30,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 02:16:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:30,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 02:16:30,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:30,736 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:16:30,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:16:30,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029116953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:30,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:30,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 21 [2023-11-29 02:16:30,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114986836] [2023-11-29 02:16:30,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:30,917 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:16:30,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2083907171, now seen corresponding path program 1 times [2023-11-29 02:16:30,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:30,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240383802] [2023-11-29 02:16:30,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:30,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 02:16:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:16:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:16:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 02:16:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-29 02:16:31,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:31,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240383802] [2023-11-29 02:16:31,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240383802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:31,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930550334] [2023-11-29 02:16:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:31,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:31,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:31,183 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:31,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 02:16:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:31,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:16:31,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-29 02:16:31,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-29 02:16:31,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930550334] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:31,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:31,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-29 02:16:31,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821480509] [2023-11-29 02:16:31,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:31,748 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:16:31,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:31,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 02:16:31,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-29 02:16:31,749 INFO L87 Difference]: Start difference. First operand 394 states and 539 transitions. cyclomatic complexity: 152 Second operand has 22 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 10 states have call successors, (11), 6 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 02:16:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:32,112 INFO L93 Difference]: Finished difference Result 445 states and 553 transitions. [2023-11-29 02:16:32,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 445 states and 553 transitions. [2023-11-29 02:16:32,117 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2023-11-29 02:16:32,120 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 445 states to 299 states and 359 transitions. [2023-11-29 02:16:32,120 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 162 [2023-11-29 02:16:32,120 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 162 [2023-11-29 02:16:32,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 359 transitions. [2023-11-29 02:16:32,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:32,121 INFO L218 hiAutomatonCegarLoop]: Abstraction has 299 states and 359 transitions. [2023-11-29 02:16:32,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states and 359 transitions. [2023-11-29 02:16:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 277. [2023-11-29 02:16:32,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 181 states have (on average 1.1657458563535912) internal successors, (211), 199 states have internal predecessors, (211), 59 states have call successors, (60), 42 states have call predecessors, (60), 37 states have return successors, (61), 35 states have call predecessors, (61), 44 states have call successors, (61) [2023-11-29 02:16:32,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 332 transitions. [2023-11-29 02:16:32,128 INFO L240 hiAutomatonCegarLoop]: Abstraction has 277 states and 332 transitions. [2023-11-29 02:16:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 02:16:32,129 INFO L428 stractBuchiCegarLoop]: Abstraction has 277 states and 332 transitions. [2023-11-29 02:16:32,129 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-29 02:16:32,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 277 states and 332 transitions. [2023-11-29 02:16:32,131 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 62 [2023-11-29 02:16:32,131 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:32,131 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:32,132 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:32,132 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:32,133 INFO L748 eck$LassoCheckResult]: Stem: 8909#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8879#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 8880#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8916#$Ultimate##0 ~n := #in~n; 8974#L10 assume !(~n < 1); 8973#L12 assume !(1 == ~n); 8969#L15 call #t~ret4 := fibo2(~n - 1);< 8972#$Ultimate##0 ~n := #in~n; 8971#L20 assume !(~n < 1); 8970#L22 assume !(1 == ~n); 8965#L25 call #t~ret6 := fibo1(~n - 1);< 8968#$Ultimate##0 ~n := #in~n; 8967#L10 assume !(~n < 1); 8966#L12 assume !(1 == ~n); 8941#L15 call #t~ret4 := fibo2(~n - 1);< 8964#$Ultimate##0 ~n := #in~n; 8963#L20 assume !(~n < 1); 8959#L22 assume !(1 == ~n); 8893#L25 call #t~ret6 := fibo1(~n - 1);< 8942#$Ultimate##0 ~n := #in~n; 8961#L10 assume !(~n < 1); 8984#L12 assume !(1 == ~n); 8985#L15 call #t~ret4 := fibo2(~n - 1);< 9026#$Ultimate##0 ~n := #in~n; 9035#L20 assume !(~n < 1); 9033#L22 assume 1 == ~n;#res := 1; 9031#fibo2FINAL assume true; 9025#fibo2EXIT >#52#return; 8890#L15-1 call #t~ret5 := fibo2(~n - 2);< 8894#$Ultimate##0 ~n := #in~n; 8989#L20 assume ~n < 1;#res := 0; 8988#fibo2FINAL assume true; 8987#fibo2EXIT >#54#return; 8986#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8983#fibo1FINAL assume true; 8981#fibo1EXIT >#48#return; 8955#L25-1 call #t~ret7 := fibo1(~n - 2);< 8979#$Ultimate##0 ~n := #in~n; 8976#L10 assume !(~n < 1); 8977#L12 assume !(1 == ~n); 8886#L15 call #t~ret4 := fibo2(~n - 1);< 8957#$Ultimate##0 ~n := #in~n; 8949#L20 assume !(~n < 1); 8946#L22 assume 1 == ~n;#res := 1; 8947#fibo2FINAL assume true; 9053#fibo2EXIT >#52#return; 8846#L15-1 [2023-11-29 02:16:32,133 INFO L750 eck$LassoCheckResult]: Loop: 8846#L15-1 call #t~ret5 := fibo2(~n - 2);< 8978#$Ultimate##0 ~n := #in~n; 8907#L20 assume !(~n < 1); 8839#L22 assume !(1 == ~n); 8847#L25 call #t~ret6 := fibo1(~n - 1);< 9059#$Ultimate##0 ~n := #in~n; 9068#L10 assume !(~n < 1); 9067#L12 assume !(1 == ~n); 8841#L15 call #t~ret4 := fibo2(~n - 1);< 9020#$Ultimate##0 ~n := #in~n; 9039#L20 assume !(~n < 1); 9037#L22 assume 1 == ~n;#res := 1; 9036#fibo2FINAL assume true; 9018#fibo2EXIT >#52#return; 8846#L15-1 [2023-11-29 02:16:32,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash -663651953, now seen corresponding path program 1 times [2023-11-29 02:16:32,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:32,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355707179] [2023-11-29 02:16:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:32,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 02:16:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 02:16:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,272 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:16:32,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355707179] [2023-11-29 02:16:32,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355707179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:32,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124737496] [2023-11-29 02:16:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:32,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:32,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:32,279 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:32,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 02:16:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:16:32,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:32,412 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:16:32,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:32,553 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 02:16:32,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124737496] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:32,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:32,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2023-11-29 02:16:32,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807330454] [2023-11-29 02:16:32,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:32,554 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:16:32,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash -815837104, now seen corresponding path program 1 times [2023-11-29 02:16:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:32,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000064157] [2023-11-29 02:16:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:32,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:32,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:16:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:32,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:16:32,693 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:32,693 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:32,693 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:32,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:32,694 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:16:32,694 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:32,694 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:32,694 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:32,694 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration7_Loop [2023-11-29 02:16:32,694 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:32,694 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:32,695 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,698 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,704 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,706 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,708 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,710 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,712 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,713 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,715 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,746 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:32,746 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:16:32,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:32,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:32,748 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:32,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-11-29 02:16:32,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:32,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:32,761 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:32,761 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=2} Honda state: {fibo1_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:32,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2023-11-29 02:16:32,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:32,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:32,765 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:32,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-29 02:16:32,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:32,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:32,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2023-11-29 02:16:32,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:32,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:32,782 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:32,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-29 02:16:32,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:16:32,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:32,797 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:16:32,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:32,800 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:32,800 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:32,800 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:32,800 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:32,800 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:16:32,800 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:32,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:32,800 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:32,800 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration7_Loop [2023-11-29 02:16:32,800 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:32,800 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:32,801 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,803 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,805 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,811 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,812 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,814 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,816 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,818 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:32,854 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:32,854 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:16:32,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:32,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:32,855 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:32,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-29 02:16:32,857 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 [2023-11-29 02:16:32,866 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:32,866 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:32,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:32,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:32,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:32,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:32,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:32,868 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:32,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2023-11-29 02:16:32,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:32,872 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:32,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-29 02:16:32,874 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 [2023-11-29 02:16:32,884 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:32,884 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:32,885 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:32,885 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:32,885 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:32,885 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:32,885 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:32,887 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:32,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:32,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:32,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:32,891 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:32,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-29 02:16:32,893 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 [2023-11-29 02:16:32,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:32,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:32,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:32,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:32,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:32,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:32,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:32,907 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:16:32,909 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:16:32,909 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 02:16:32,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:32,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:32,910 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:32,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-29 02:16:32,912 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:16:32,912 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:16:32,912 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:16:32,912 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-29 02:16:32,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:32,915 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:16:32,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:32,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:16:32,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:33,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 02:16:33,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:33,257 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 [2023-11-29 02:16:33,257 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 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) [2023-11-29 02:16:33,577 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. 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 1005 states and 1188 transitions. Complement of second has 40 states. [2023-11-29 02:16:33,578 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 [2023-11-29 02:16:33,578 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) [2023-11-29 02:16:33,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 61 transitions. [2023-11-29 02:16:33,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 61 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-29 02:16:33,580 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:33,580 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:16:33,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:33,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2023-11-29 02:16:33,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:16:33,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:33,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 02:16:33,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:33,976 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 [2023-11-29 02:16:33,976 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 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) [2023-11-29 02:16:34,195 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. 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 621 states and 723 transitions. Complement of second has 26 states. [2023-11-29 02:16:34,196 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 [2023-11-29 02:16:34,196 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) [2023-11-29 02:16:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2023-11-29 02:16:34,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-29 02:16:34,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:34,197 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:16:34,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:34,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 02:16:34,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:34,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 02:16:34,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:34,544 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 [2023-11-29 02:16:34,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61 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) [2023-11-29 02:16:34,839 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 277 states and 332 transitions. cyclomatic complexity: 61. 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 1402 states and 1651 transitions. Complement of second has 102 states. [2023-11-29 02:16:34,840 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 [2023-11-29 02:16:34,840 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) [2023-11-29 02:16:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 71 transitions. [2023-11-29 02:16:34,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 14 letters. [2023-11-29 02:16:34,841 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:34,841 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 60 letters. Loop has 14 letters. [2023-11-29 02:16:34,842 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:34,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 71 transitions. Stem has 46 letters. Loop has 28 letters. [2023-11-29 02:16:34,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:34,843 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1402 states and 1651 transitions. [2023-11-29 02:16:34,872 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 186 [2023-11-29 02:16:34,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1402 states to 782 states and 926 transitions. [2023-11-29 02:16:34,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 334 [2023-11-29 02:16:34,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 358 [2023-11-29 02:16:34,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 782 states and 926 transitions. [2023-11-29 02:16:34,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:34,880 INFO L218 hiAutomatonCegarLoop]: Abstraction has 782 states and 926 transitions. [2023-11-29 02:16:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states and 926 transitions. [2023-11-29 02:16:34,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 640. [2023-11-29 02:16:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 419 states have (on average 1.1479713603818615) internal successors, (481), 464 states have internal predecessors, (481), 126 states have call successors, (134), 95 states have call predecessors, (134), 95 states have return successors, (133), 80 states have call predecessors, (133), 99 states have call successors, (133) [2023-11-29 02:16:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 748 transitions. [2023-11-29 02:16:34,895 INFO L240 hiAutomatonCegarLoop]: Abstraction has 640 states and 748 transitions. [2023-11-29 02:16:34,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:34,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 02:16:34,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-29 02:16:34,896 INFO L87 Difference]: Start difference. First operand 640 states and 748 transitions. Second operand has 17 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-29 02:16:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:35,087 INFO L93 Difference]: Finished difference Result 431 states and 477 transitions. [2023-11-29 02:16:35,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 431 states and 477 transitions. [2023-11-29 02:16:35,091 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2023-11-29 02:16:35,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 431 states to 270 states and 303 transitions. [2023-11-29 02:16:35,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 158 [2023-11-29 02:16:35,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2023-11-29 02:16:35,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 303 transitions. [2023-11-29 02:16:35,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:35,094 INFO L218 hiAutomatonCegarLoop]: Abstraction has 270 states and 303 transitions. [2023-11-29 02:16:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 303 transitions. [2023-11-29 02:16:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 261. [2023-11-29 02:16:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 173 states have (on average 1.0982658959537572) internal successors, (190), 186 states have internal predecessors, (190), 48 states have call successors, (52), 38 states have call predecessors, (52), 40 states have return successors, (51), 36 states have call predecessors, (51), 40 states have call successors, (51) [2023-11-29 02:16:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 293 transitions. [2023-11-29 02:16:35,101 INFO L240 hiAutomatonCegarLoop]: Abstraction has 261 states and 293 transitions. [2023-11-29 02:16:35,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:16:35,101 INFO L428 stractBuchiCegarLoop]: Abstraction has 261 states and 293 transitions. [2023-11-29 02:16:35,101 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-29 02:16:35,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 261 states and 293 transitions. [2023-11-29 02:16:35,103 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2023-11-29 02:16:35,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:35,104 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:35,104 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:35,105 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:35,105 INFO L748 eck$LassoCheckResult]: Stem: 14398#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 14371#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 14372#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 14403#$Ultimate##0 ~n := #in~n; 14492#L10 assume !(~n < 1); 14491#L12 assume !(1 == ~n); 14487#L15 call #t~ret4 := fibo2(~n - 1);< 14490#$Ultimate##0 ~n := #in~n; 14489#L20 assume !(~n < 1); 14488#L22 assume !(1 == ~n); 14483#L25 call #t~ret6 := fibo1(~n - 1);< 14486#$Ultimate##0 ~n := #in~n; 14485#L10 assume !(~n < 1); 14484#L12 assume !(1 == ~n); 14479#L15 call #t~ret4 := fibo2(~n - 1);< 14482#$Ultimate##0 ~n := #in~n; 14481#L20 assume !(~n < 1); 14480#L22 assume !(1 == ~n); 14470#L25 call #t~ret6 := fibo1(~n - 1);< 14478#$Ultimate##0 ~n := #in~n; 14476#L10 assume !(~n < 1); 14474#L12 assume !(1 == ~n); 14466#L15 call #t~ret4 := fibo2(~n - 1);< 14471#$Ultimate##0 ~n := #in~n; 14477#L20 assume !(~n < 1); 14475#L22 assume 1 == ~n;#res := 1; 14473#fibo2FINAL assume true; 14465#fibo2EXIT >#52#return; 14467#L15-1 call #t~ret5 := fibo2(~n - 2);< 14546#$Ultimate##0 ~n := #in~n; 14548#L20 assume ~n < 1;#res := 0; 14547#fibo2FINAL assume true; 14545#fibo2EXIT >#54#return; 14544#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 14542#fibo1FINAL assume true; 14540#fibo1EXIT >#48#return; 14537#L25-1 call #t~ret7 := fibo1(~n - 2);< 14538#$Ultimate##0 ~n := #in~n; 14543#L10 assume !(~n < 1); 14541#L12 assume 1 == ~n;#res := 1; 14539#fibo1FINAL assume true; 14536#fibo1EXIT >#50#return; 14535#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 14534#fibo2FINAL assume true; 14533#fibo2EXIT >#52#return; 14360#L15-1 call #t~ret5 := fibo2(~n - 2);< 14443#$Ultimate##0 ~n := #in~n; 14564#L20 assume !(~n < 1); 14563#L22 assume 1 == ~n;#res := 1; 14562#fibo2FINAL assume true; 14532#fibo2EXIT >#54#return; 14531#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 14530#fibo1FINAL assume true; 14529#fibo1EXIT >#48#return; 14518#L25-1 call #t~ret7 := fibo1(~n - 2);< 14523#$Ultimate##0 ~n := #in~n; 14521#L10 assume !(~n < 1); 14517#L12 assume !(1 == ~n); 14356#L15 call #t~ret4 := fibo2(~n - 1);< 14397#$Ultimate##0 [2023-11-29 02:16:35,105 INFO L750 eck$LassoCheckResult]: Loop: 14397#$Ultimate##0 ~n := #in~n; 14524#L20 assume !(~n < 1); 14556#L22 assume !(1 == ~n); 14396#L25 call #t~ret6 := fibo1(~n - 1);< 14555#$Ultimate##0 ~n := #in~n; 14554#L10 assume !(~n < 1); 14550#L12 assume !(1 == ~n); 14357#L15 call #t~ret4 := fibo2(~n - 1);< 14397#$Ultimate##0 [2023-11-29 02:16:35,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:35,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2006509536, now seen corresponding path program 1 times [2023-11-29 02:16:35,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:35,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469082792] [2023-11-29 02:16:35,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:35,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:35,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 02:16:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:35,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:16:35,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:35,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 02:16:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 35 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 02:16:35,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:35,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469082792] [2023-11-29 02:16:35,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469082792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:35,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111370122] [2023-11-29 02:16:35,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:35,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:35,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:35,328 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:35,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-11-29 02:16:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:35,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:16:35,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 02:16:35,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:35,659 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 02:16:35,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111370122] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:35,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:35,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 21 [2023-11-29 02:16:35,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806298874] [2023-11-29 02:16:35,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:35,660 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:16:35,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:35,660 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 3 times [2023-11-29 02:16:35,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:35,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662355578] [2023-11-29 02:16:35,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:35,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:35,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:16:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:35,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:16:35,754 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:35,754 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:35,754 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:35,754 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:35,755 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:16:35,755 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:35,755 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:35,755 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:35,755 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration8_Loop [2023-11-29 02:16:35,755 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:35,755 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:35,756 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:35,758 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:35,759 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:35,761 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:35,763 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:35,771 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:35,772 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:35,774 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:35,810 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:35,810 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:16:35,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:35,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:35,816 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:35,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-29 02:16:35,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:35,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:35,840 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:35,840 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:35,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2023-11-29 02:16:35,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:35,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:35,844 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:35,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2023-11-29 02:16:35,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:35,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:35,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:35,858 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:35,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2023-11-29 02:16:35,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:35,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:35,862 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:35,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-29 02:16:35,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:35,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:35,877 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:35,877 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:35,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2023-11-29 02:16:35,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:35,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:35,881 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:35,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-29 02:16:35,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:35,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:35,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:35,895 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:35,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2023-11-29 02:16:35,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:35,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:35,899 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:35,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-29 02:16:35,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:35,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:35,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2023-11-29 02:16:35,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:35,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:35,916 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:35,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-29 02:16:35,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:16:35,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:35,984 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:16:35,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2023-11-29 02:16:35,987 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:35,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:35,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:35,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:35,987 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:16:35,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:36,021 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:36,021 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:36,021 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration8_Loop [2023-11-29 02:16:36,021 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:36,021 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:36,022 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:36,025 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:36,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:36,028 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:36,030 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:36,037 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:36,039 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:36,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:36,077 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:36,077 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:16:36,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:36,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:36,078 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:36,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-29 02:16:36,084 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:16:36,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:36,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:36,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:36,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:36,095 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:36,095 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:36,095 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:36,097 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:36,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-29 02:16:36,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:36,100 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:36,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-29 02:16:36,104 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 [2023-11-29 02:16:36,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:36,114 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:36,114 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:36,114 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:36,114 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:36,114 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:36,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:36,116 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:36,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2023-11-29 02:16:36,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:36,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:36,120 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:36,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2023-11-29 02:16:36,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:16:36,132 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:36,132 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:36,132 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:36,132 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:36,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:36,133 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:36,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:36,134 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:36,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2023-11-29 02:16:36,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:36,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:36,138 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:36,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2023-11-29 02:16:36,140 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 [2023-11-29 02:16:36,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:36,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:36,151 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:36,151 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:36,151 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:36,151 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:36,151 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:36,153 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:36,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2023-11-29 02:16:36,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:36,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:36,157 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:36,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2023-11-29 02:16:36,159 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 [2023-11-29 02:16:36,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:36,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:36,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:36,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:36,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:36,171 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:36,171 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:36,173 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:16:36,175 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 02:16:36,175 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:16:36,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:36,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:36,179 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:36,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2023-11-29 02:16:36,188 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:16:36,188 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:16:36,188 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:16:36,188 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-29 02:16:36,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2023-11-29 02:16:36,191 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:16:36,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:36,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 02:16:36,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:36,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:36,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:36,629 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 [2023-11-29 02:16:36,629 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 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, (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) [2023-11-29 02:16:36,712 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. 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, (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 279 states and 311 transitions. Complement of second has 15 states. [2023-11-29 02:16:36,712 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 [2023-11-29 02:16:36,713 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, (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) [2023-11-29 02:16:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-29 02:16:36,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-29 02:16:36,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:36,714 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:16:36,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:36,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 02:16:36,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:36,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2023-11-29 02:16:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:37,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:37,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:37,130 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 [2023-11-29 02:16:37,130 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 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, (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) [2023-11-29 02:16:37,196 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. 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, (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 279 states and 311 transitions. Complement of second has 15 states. [2023-11-29 02:16:37,197 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 [2023-11-29 02:16:37,197 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, (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) [2023-11-29 02:16:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-29 02:16:37,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-29 02:16:37,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:37,198 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:16:37,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:37,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 02:16:37,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:37,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:37,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:37,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:37,615 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 [2023-11-29 02:16:37,616 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35 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, (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) [2023-11-29 02:16:37,736 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 261 states and 293 transitions. cyclomatic complexity: 35. 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, (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 410 states and 449 transitions. Complement of second has 27 states. [2023-11-29 02:16:37,736 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 [2023-11-29 02:16:37,737 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, (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) [2023-11-29 02:16:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-29 02:16:37,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 59 letters. Loop has 8 letters. [2023-11-29 02:16:37,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:37,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-29 02:16:37,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:37,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 59 letters. Loop has 16 letters. [2023-11-29 02:16:37,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:37,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 410 states and 449 transitions. [2023-11-29 02:16:37,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-29 02:16:37,747 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 410 states to 287 states and 318 transitions. [2023-11-29 02:16:37,747 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 158 [2023-11-29 02:16:37,747 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 177 [2023-11-29 02:16:37,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 318 transitions. [2023-11-29 02:16:37,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:37,748 INFO L218 hiAutomatonCegarLoop]: Abstraction has 287 states and 318 transitions. [2023-11-29 02:16:37,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states and 318 transitions. [2023-11-29 02:16:37,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 266. [2023-11-29 02:16:37,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 179 states have (on average 1.094972067039106) internal successors, (196), 191 states have internal predecessors, (196), 48 states have call successors, (52), 39 states have call predecessors, (52), 39 states have return successors, (48), 35 states have call predecessors, (48), 39 states have call successors, (48) [2023-11-29 02:16:37,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 296 transitions. [2023-11-29 02:16:37,756 INFO L240 hiAutomatonCegarLoop]: Abstraction has 266 states and 296 transitions. [2023-11-29 02:16:37,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:37,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 02:16:37,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-29 02:16:37,757 INFO L87 Difference]: Start difference. First operand 266 states and 296 transitions. Second operand has 21 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 11 states have call successors, (18), 4 states have call predecessors, (18), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-29 02:16:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:38,109 INFO L93 Difference]: Finished difference Result 315 states and 364 transitions. [2023-11-29 02:16:38,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 364 transitions. [2023-11-29 02:16:38,112 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-29 02:16:38,114 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 289 states and 332 transitions. [2023-11-29 02:16:38,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 168 [2023-11-29 02:16:38,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 168 [2023-11-29 02:16:38,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 289 states and 332 transitions. [2023-11-29 02:16:38,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:16:38,115 INFO L218 hiAutomatonCegarLoop]: Abstraction has 289 states and 332 transitions. [2023-11-29 02:16:38,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states and 332 transitions. [2023-11-29 02:16:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 264. [2023-11-29 02:16:38,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 176 states have (on average 1.0965909090909092) internal successors, (193), 188 states have internal predecessors, (193), 50 states have call successors, (53), 39 states have call predecessors, (53), 38 states have return successors, (53), 36 states have call predecessors, (53), 38 states have call successors, (53) [2023-11-29 02:16:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 299 transitions. [2023-11-29 02:16:38,120 INFO L240 hiAutomatonCegarLoop]: Abstraction has 264 states and 299 transitions. [2023-11-29 02:16:38,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 02:16:38,121 INFO L428 stractBuchiCegarLoop]: Abstraction has 264 states and 299 transitions. [2023-11-29 02:16:38,121 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-29 02:16:38,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 264 states and 299 transitions. [2023-11-29 02:16:38,123 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2023-11-29 02:16:38,123 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:16:38,123 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:16:38,124 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:38,124 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:16:38,124 INFO L748 eck$LassoCheckResult]: Stem: 17417#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 17383#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 6; 17384#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17420#$Ultimate##0 ~n := #in~n; 17519#L10 assume !(~n < 1); 17517#L12 assume !(1 == ~n); 17514#L15 call #t~ret4 := fibo2(~n - 1);< 17515#$Ultimate##0 ~n := #in~n; 17527#L20 assume !(~n < 1); 17525#L22 assume !(1 == ~n); 17522#L25 call #t~ret6 := fibo1(~n - 1);< 17523#$Ultimate##0 ~n := #in~n; 17535#L10 assume !(~n < 1); 17533#L12 assume !(1 == ~n); 17530#L15 call #t~ret4 := fibo2(~n - 1);< 17531#$Ultimate##0 ~n := #in~n; 17545#L20 assume !(~n < 1); 17542#L22 assume !(1 == ~n); 17411#L25 call #t~ret6 := fibo1(~n - 1);< 17541#$Ultimate##0 ~n := #in~n; 17560#L10 assume !(~n < 1); 17493#L12 assume !(1 == ~n); 17410#L15 call #t~ret4 := fibo2(~n - 1);< 17412#$Ultimate##0 ~n := #in~n; 17556#L20 assume !(~n < 1); 17555#L22 assume 1 == ~n;#res := 1; 17554#fibo2FINAL assume true; 17553#fibo2EXIT >#52#return; 17549#L15-1 call #t~ret5 := fibo2(~n - 2);< 17550#$Ultimate##0 ~n := #in~n; 17552#L20 assume ~n < 1;#res := 0; 17551#fibo2FINAL assume true; 17548#fibo2EXIT >#54#return; 17547#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17544#fibo1FINAL assume true; 17540#fibo1EXIT >#48#return; 17537#L25-1 call #t~ret7 := fibo1(~n - 2);< 17538#$Ultimate##0 ~n := #in~n; 17546#L10 assume !(~n < 1); 17543#L12 assume 1 == ~n;#res := 1; 17539#fibo1FINAL assume true; 17536#fibo1EXIT >#50#return; 17534#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17532#fibo2FINAL assume true; 17529#fibo2EXIT >#52#return; 17369#L15-1 call #t~ret5 := fibo2(~n - 2);< 17504#$Ultimate##0 ~n := #in~n; 17467#L20 assume !(~n < 1); 17466#L22 assume !(1 == ~n); 17393#L25 call #t~ret6 := fibo1(~n - 1);< 17461#$Ultimate##0 ~n := #in~n; 17459#L10 assume !(~n < 1); 17460#L12 assume !(1 == ~n); 17400#L15 call #t~ret4 := fibo2(~n - 1);< 17414#$Ultimate##0 ~n := #in~n; 17490#L20 assume !(~n < 1); 17491#L22 assume !(1 == ~n); 17387#L25 call #t~ret6 := fibo1(~n - 1);< 17386#$Ultimate##0 ~n := #in~n; 17388#L10 assume !(~n < 1); 17487#L12 assume !(1 == ~n); 17484#L15 [2023-11-29 02:16:38,125 INFO L750 eck$LassoCheckResult]: Loop: 17484#L15 call #t~ret4 := fibo2(~n - 1);< 17485#$Ultimate##0 ~n := #in~n; 17490#L20 assume !(~n < 1); 17491#L22 assume !(1 == ~n); 17387#L25 call #t~ret6 := fibo1(~n - 1);< 17386#$Ultimate##0 ~n := #in~n; 17388#L10 assume !(~n < 1); 17487#L12 assume !(1 == ~n); 17484#L15 [2023-11-29 02:16:38,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1632318521, now seen corresponding path program 2 times [2023-11-29 02:16:38,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:38,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130959640] [2023-11-29 02:16:38,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:38,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:38,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 02:16:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:38,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 02:16:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:38,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 02:16:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 02:16:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:16:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:16:38,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130959640] [2023-11-29 02:16:38,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130959640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:16:38,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072418342] [2023-11-29 02:16:38,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:16:38,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:16:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,269 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-11-29 02:16:38,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:16:38,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:16:38,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:16:38,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:16:38,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:16:38,523 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 02:16:38,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072418342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:16:38,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:16:38,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 16 [2023-11-29 02:16:38,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419498187] [2023-11-29 02:16:38,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:16:38,524 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:16:38,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:38,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 4 times [2023-11-29 02:16:38,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:16:38,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110061725] [2023-11-29 02:16:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:16:38,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:16:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:38,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:16:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:16:38,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:16:38,653 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:38,653 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:38,653 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:38,653 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:38,653 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:16:38,653 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,653 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:38,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:38,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration9_Loop [2023-11-29 02:16:38,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:38,654 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:38,654 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:38,657 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:38,660 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:38,662 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:38,664 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:38,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:38,667 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:38,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:38,729 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:38,729 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:16:38,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,731 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2023-11-29 02:16:38,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:38,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:38,752 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:38,752 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:38,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2023-11-29 02:16:38,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,756 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2023-11-29 02:16:38,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:38,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:38,770 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:38,770 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:38,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Ended with exit code 0 [2023-11-29 02:16:38,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,773 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2023-11-29 02:16:38,776 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:38,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:38,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:38,787 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:38,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:38,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,791 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2023-11-29 02:16:38,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:38,793 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:38,807 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:38,807 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:38,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2023-11-29 02:16:38,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,812 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2023-11-29 02:16:38,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:38,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:38,825 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:38,826 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:38,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2023-11-29 02:16:38,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,829 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2023-11-29 02:16:38,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:38,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:38,843 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:38,844 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:38,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2023-11-29 02:16:38,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,848 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2023-11-29 02:16:38,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:38,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:38,862 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:16:38,862 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:16:38,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2023-11-29 02:16:38,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,866 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2023-11-29 02:16:38,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:16:38,868 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:38,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2023-11-29 02:16:38,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:38,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:38,890 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:38,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2023-11-29 02:16:38,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:16:38,892 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:16:41,004 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:16:41,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2023-11-29 02:16:41,008 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:16:41,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:16:41,008 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:16:41,008 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:16:41,008 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:16:41,008 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,008 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:16:41,008 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:16:41,008 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_6-1.c_Iteration9_Loop [2023-11-29 02:16:41,008 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:16:41,008 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:16:41,009 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:41,010 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:41,012 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:41,013 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:41,014 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:41,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:41,017 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:41,018 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:16:41,065 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:16:41,065 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:16:41,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:41,066 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:41,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2023-11-29 02:16:41,069 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 [2023-11-29 02:16:41,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:41,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:41,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:41,079 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:41,079 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:41,079 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:41,079 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:41,080 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:41,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2023-11-29 02:16:41,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:41,083 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:41,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2023-11-29 02:16:41,086 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 [2023-11-29 02:16:41,095 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:41,095 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:41,095 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:41,095 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:41,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:41,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:41,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:41,097 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:41,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:41,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:41,100 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:41,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2023-11-29 02:16:41,103 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 [2023-11-29 02:16:41,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:41,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:41,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:41,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:41,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:41,113 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:41,113 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:41,115 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:41,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2023-11-29 02:16:41,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:41,118 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:41,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2023-11-29 02:16:41,120 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 [2023-11-29 02:16:41,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:41,130 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:41,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:41,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:41,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:41,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:41,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:41,132 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:41,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:41,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:41,136 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:41,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2023-11-29 02:16:41,138 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 [2023-11-29 02:16:41,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:41,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:41,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:41,148 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:41,148 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:41,149 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:41,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:41,150 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:41,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Ended with exit code 0 [2023-11-29 02:16:41,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:41,153 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:41,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2023-11-29 02:16:41,156 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 [2023-11-29 02:16:41,165 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:41,165 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:41,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:41,166 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:41,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:41,166 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:41,166 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:41,167 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:41,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2023-11-29 02:16:41,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:41,171 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:41,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2023-11-29 02:16:41,173 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 [2023-11-29 02:16:41,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:41,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:41,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:41,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:41,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:41,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:41,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:41,187 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:16:41,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Ended with exit code 0 [2023-11-29 02:16:41,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:41,192 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:41,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2023-11-29 02:16:41,194 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 [2023-11-29 02:16:41,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:16:41,204 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:16:41,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:16:41,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:16:41,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:16:41,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:16:41,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:16:41,207 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:16:41,209 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 02:16:41,209 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:16:41,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:16:41,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:16:41,210 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:16:41,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2023-11-29 02:16:41,212 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:16:41,212 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:16:41,212 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:16:41,212 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-29 02:16:41,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2023-11-29 02:16:41,216 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:16:41,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:41,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Ended with exit code 0 [2023-11-29 02:16:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:41,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:16:41,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:41,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:41,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:41,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:41,569 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 [2023-11-29 02:16:41,569 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 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) [2023-11-29 02:16:41,641 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. 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 288 states and 323 transitions. Complement of second has 19 states. [2023-11-29 02:16:41,642 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 [2023-11-29 02:16:41,642 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) [2023-11-29 02:16:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2023-11-29 02:16:41,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-29 02:16:41,643 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:41,643 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:16:41,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:41,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:16:41,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:41,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:41,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:42,004 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 [2023-11-29 02:16:42,004 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 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) [2023-11-29 02:16:42,114 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. 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 288 states and 323 transitions. Complement of second has 21 states. [2023-11-29 02:16:42,115 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 [2023-11-29 02:16:42,115 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) [2023-11-29 02:16:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2023-11-29 02:16:42,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-29 02:16:42,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:42,116 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:16:42,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:16:42,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:42,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 02:16:42,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:16:42,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 02:16:42,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:16:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:16:42,501 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 [2023-11-29 02:16:42,501 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38 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) [2023-11-29 02:16:42,600 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 299 transitions. cyclomatic complexity: 38. 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 573 states and 653 transitions. Complement of second has 33 states. [2023-11-29 02:16:42,603 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 [2023-11-29 02:16:42,603 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) [2023-11-29 02:16:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-29 02:16:42,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-29 02:16:42,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:42,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2023-11-29 02:16:42,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:42,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 61 letters. Loop has 16 letters. [2023-11-29 02:16:42,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:16:42,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 573 states and 653 transitions. [2023-11-29 02:16:42,610 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 02:16:42,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 573 states to 0 states and 0 transitions. [2023-11-29 02:16:42,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 02:16:42,610 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 02:16:42,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 02:16:42,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:16:42,611 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 02:16:42,611 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 02:16:42,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:16:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 02:16:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:16:42,611 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 10 states have internal predecessors, (40), 8 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 02:16:42,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:16:42,612 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-29 02:16:42,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-29 02:16:42,612 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 02:16:42,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 02:16:42,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 02:16:42,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 02:16:42,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 02:16:42,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:16:42,612 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 02:16:42,612 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 02:16:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 02:16:42,613 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 02:16:42,613 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-29 02:16:42,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-29 02:16:42,613 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 02:16:42,613 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-29 02:16:42,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 02:16:42 BoogieIcfgContainer [2023-11-29 02:16:42,620 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 02:16:42,621 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:16:42,621 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:16:42,621 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:16:42,621 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:16:21" (3/4) ... [2023-11-29 02:16:42,623 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 02:16:42,624 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:16:42,625 INFO L158 Benchmark]: Toolchain (without parser) took 22067.82ms. Allocated memory was 142.6MB in the beginning and 272.6MB in the end (delta: 130.0MB). Free memory was 108.4MB in the beginning and 200.5MB in the end (delta: -92.1MB). Peak memory consumption was 39.9MB. Max. memory is 16.1GB. [2023-11-29 02:16:42,625 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 114.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:16:42,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 180.76ms. Allocated memory is still 142.6MB. Free memory was 108.4MB in the beginning and 98.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 02:16:42,626 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.82ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 96.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:16:42,626 INFO L158 Benchmark]: Boogie Preprocessor took 27.41ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:16:42,626 INFO L158 Benchmark]: RCFGBuilder took 243.38ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 85.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 02:16:42,626 INFO L158 Benchmark]: BuchiAutomizer took 21583.23ms. Allocated memory was 142.6MB in the beginning and 272.6MB in the end (delta: 130.0MB). Free memory was 85.4MB in the beginning and 200.5MB in the end (delta: -115.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 02:16:42,627 INFO L158 Benchmark]: Witness Printer took 3.53ms. Allocated memory is still 272.6MB. Free memory is still 200.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:16:42,629 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 114.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 180.76ms. Allocated memory is still 142.6MB. Free memory was 108.4MB in the beginning and 98.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.82ms. Allocated memory is still 142.6MB. Free memory was 98.2MB in the beginning and 96.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.41ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 95.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 243.38ms. Allocated memory is still 142.6MB. Free memory was 95.2MB in the beginning and 85.4MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 21583.23ms. Allocated memory was 142.6MB in the beginning and 272.6MB in the end (delta: 130.0MB). Free memory was 85.4MB in the beginning and 200.5MB in the end (delta: -115.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.53ms. Allocated memory is still 272.6MB. Free memory is still 200.5MB. 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 14 terminating modules (8 trivial, 2 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 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. 8 modules have a trivial ranking function, the largest among these consists of 22 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 21.5s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 11.4s. Construction of modules took 1.9s. Büchi inclusion checks took 7.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 12. Automata minimization 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 408 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1158 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1122 mSDsluCounter, 1799 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1337 mSDsCounter, 603 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3043 IncrementalHoareTripleChecker+Invalid, 3646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 603 mSolverCounterUnsat, 462 mSDtfsCounter, 3043 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp85 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq186 hnf93 smp66 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 30 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-29 02:16:42,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2023-11-29 02:16:42,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2023-11-29 02:16:43,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2023-11-29 02:16:43,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-29 02:16:43,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-11-29 02:16:43,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-29 02:16:43,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-29 02:16:44,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 02:16:44,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:16:44,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aafdf6e6-1d72-4d9d-aadc-7246d7a36687/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE