./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 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_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/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_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/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_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/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 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:13:01,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:13:01,392 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 03:13:01,397 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:13:01,398 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:13:01,422 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:13:01,423 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:13:01,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:13:01,424 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:13:01,424 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:13:01,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:13:01,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:13:01,426 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:13:01,427 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 03:13:01,427 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 03:13:01,428 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 03:13:01,428 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 03:13:01,429 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 03:13:01,429 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 03:13:01,430 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:13:01,430 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 03:13:01,431 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:13:01,431 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:13:01,432 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:13:01,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:13:01,433 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 03:13:01,433 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 03:13:01,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 03:13:01,434 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:13:01,434 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:13:01,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:13:01,435 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 03:13:01,436 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:13:01,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:13:01,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:13:01,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:13:01,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:13:01,437 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 03:13:01,437 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_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2023-11-29 03:13:01,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:13:01,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:13:01,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:13:01,686 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:13:01,686 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:13:01,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2023-11-29 03:13:04,450 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:13:04,611 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:13:04,611 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2023-11-29 03:13:04,616 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/data/4ee19cc07/9c6c8140287741128ffbd7970030cb81/FLAG3bd449e4a [2023-11-29 03:13:04,627 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/data/4ee19cc07/9c6c8140287741128ffbd7970030cb81 [2023-11-29 03:13:04,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:13:04,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:13:04,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:13:04,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:13:04,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:13:04,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,639 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddfa867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04, skipping insertion in model container [2023-11-29 03:13:04,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,660 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:13:04,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:13:04,829 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:13:04,845 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:13:04,859 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:13:04,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04 WrapperNode [2023-11-29 03:13:04,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:13:04,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:13:04,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:13:04,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:13:04,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,891 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-29 03:13:04,891 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:13:04,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:13:04,892 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:13:04,892 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:13:04,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,903 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,915 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 03:13:04,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,919 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:13:04,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:13:04,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:13:04,925 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:13:04,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (1/1) ... [2023-11-29 03:13:04,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:04,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:04,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:04,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 03:13:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:13:04,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:13:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-29 03:13:04,996 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-29 03:13:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-29 03:13:04,996 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-29 03:13:04,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:13:04,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:13:05,065 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:13:05,067 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:13:05,166 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:13:05,176 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:13:05,176 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 03:13:05,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:13:05 BoogieIcfgContainer [2023-11-29 03:13:05,178 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:13:05,178 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 03:13:05,178 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 03:13:05,182 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 03:13:05,183 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 03:13:05,183 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 03:13:04" (1/3) ... [2023-11-29 03:13:05,184 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77fdef31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 03:13:05, skipping insertion in model container [2023-11-29 03:13:05,184 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 03:13:05,184 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:13:04" (2/3) ... [2023-11-29 03:13:05,184 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77fdef31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 03:13:05, skipping insertion in model container [2023-11-29 03:13:05,185 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 03:13:05,185 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:13:05" (3/3) ... [2023-11-29 03:13:05,186 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-1.c [2023-11-29 03:13:05,238 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 03:13:05,238 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 03:13:05,239 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 03:13:05,239 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 03:13:05,239 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 03:13:05,239 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 03:13:05,239 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 03:13:05,239 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 03:13:05,245 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 03:13:05,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 03:13:05,264 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:05,264 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:05,269 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 03:13:05,269 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:05,269 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 03:13:05,270 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 03:13:05,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 03:13:05,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:05,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:05,274 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 03:13:05,274 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:05,280 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-29 03:13:05,280 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 03:13:05,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:05,285 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-29 03:13:05,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:05,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062222715] [2023-11-29 03:13:05,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:05,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:05,366 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:13:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:05,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:13:05,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-29 03:13:05,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:05,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472822207] [2023-11-29 03:13:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:05,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:05,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:13:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:05,414 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:13:05,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:05,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-29 03:13:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:05,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419495278] [2023-11-29 03:13:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:05,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:05,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:13:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:05,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:13:05,665 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:05,665 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:05,665 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:05,666 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:05,666 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 03:13:05,666 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:05,666 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:05,666 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:05,666 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2023-11-29 03:13:05,667 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:05,667 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:05,680 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 03:13:05,688 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 03:13:05,691 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 03:13:05,694 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 03:13:05,701 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 03:13:05,703 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:13:05,707 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 03:13:05,710 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 03:13:05,786 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:05,787 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 03:13:05,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:05,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:05,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:05,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 03:13:05,813 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:05,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:05,829 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:05,829 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 03:13:05,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:05,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:05,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:05,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:05,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 03:13:05,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:05,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:05,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:05,858 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 03:13:05,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 03:13:05,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:05,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:05,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:05,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 03:13:05,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:05,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:05,889 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:05,889 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 03:13:05,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 03:13:05,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:05,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:05,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:05,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 03:13:05,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:05,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:05,917 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:05,917 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 03:13:05,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 03:13:05,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:05,923 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:05,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 03:13:05,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:05,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:05,959 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:05,960 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 03:13:05,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 03:13:05,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:05,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:05,965 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:05,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 03:13:05,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:05,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:05,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:05,981 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 03:13:05,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 03:13:05,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:05,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:05,987 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:05,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 03:13:05,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:05,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:06,003 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:06,004 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 03:13:06,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-29 03:13:06,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:06,011 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:06,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 03:13:06,013 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:06,013 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:06,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 03:13:06,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:06,030 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:06,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 03:13:06,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 03:13:06,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:06,098 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 03:13:06,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-29 03:13:06,103 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:06,103 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:06,103 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:06,103 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:06,103 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 03:13:06,103 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,103 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:06,103 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:06,103 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2023-11-29 03:13:06,103 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:06,104 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:06,105 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 03:13:06,109 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 03:13:06,113 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 03:13:06,116 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 03:13:06,118 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 03:13:06,120 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 03:13:06,130 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 03:13:06,132 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 03:13:06,194 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:06,199 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 03:13:06,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:06,202 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:06,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 03:13:06,205 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 03:13:06,218 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:06,218 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:06,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:06,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:06,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:06,221 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:06,221 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:06,224 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:06,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-29 03:13:06,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:06,228 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:06,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-29 03:13:06,231 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 03:13:06,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:06,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:06,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:06,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:06,242 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:06,242 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:06,242 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:06,244 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:06,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-11-29 03:13:06,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:06,248 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:06,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-29 03:13:06,250 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 03:13:06,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:06,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:06,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:06,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:06,260 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:06,261 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:06,261 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:06,262 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:06,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-11-29 03:13:06,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:06,267 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:06,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-29 03:13:06,269 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 03:13:06,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:06,280 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:06,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:06,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:06,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:06,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:06,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:06,282 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:06,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-29 03:13:06,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:06,286 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:06,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-29 03:13:06,288 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 03:13:06,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:06,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:06,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:06,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:06,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:06,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:06,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:06,301 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:06,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-11-29 03:13:06,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:06,306 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:06,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-29 03:13:06,309 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 03:13:06,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:06,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:06,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:06,319 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:06,319 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:06,320 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:06,320 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:06,326 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 03:13:06,354 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 03:13:06,355 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 03:13:06,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:06,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:06,397 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:06,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-29 03:13:06,399 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 03:13:06,399 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 03:13:06,399 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 03:13:06,400 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-29 03:13:06,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-11-29 03:13:06,405 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 03:13:06,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:06,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:13:06,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:06,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:13:06,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:06,551 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 03:13:06,581 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 03:13:06,583 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 03:13:06,750 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 03:13:06,752 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 03:13:06,757 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 03:13:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-29 03:13:06,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-29 03:13:06,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:06,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-29 03:13:06,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:06,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-29 03:13:06,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:06,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-29 03:13:06,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 03:13:06,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-29 03:13:06,777 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-29 03:13:06,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-29 03:13:06,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-29 03:13:06,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:06,779 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-29 03:13:06,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-29 03:13:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-29 03:13:06,802 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 03:13:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-29 03:13:06,804 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-29 03:13:06,804 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-29 03:13:06,804 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 03:13:06,804 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-29 03:13:06,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 03:13:06,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:06,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:06,807 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:06,807 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:06,807 INFO L748 eck$LassoCheckResult]: Stem: 236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 223#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 218#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 217#$Ultimate##0 ~n := #in~n; 219#L10 assume !(~n < 1); 229#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 233#$Ultimate##0 ~n := #in~n; 247#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 220#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-29 03:13:06,808 INFO L750 eck$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 03:13:06,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:06,808 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-29 03:13:06,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:06,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987136214] [2023-11-29 03:13:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:06,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:13:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:06,941 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 03:13:06,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:06,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987136214] [2023-11-29 03:13:06,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987136214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:06,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:06,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:13:06,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155337093] [2023-11-29 03:13:06,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:06,945 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 03:13:06,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:06,946 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-29 03:13:06,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:06,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995006582] [2023-11-29 03:13:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:06,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 03:13:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,018 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 03:13:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995006582] [2023-11-29 03:13:07,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995006582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:13:07,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:13:07,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:13:07,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969250203] [2023-11-29 03:13:07,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:13:07,020 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 03:13:07,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:07,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:13:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:13:07,023 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 03:13:07,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:07,093 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-29 03:13:07,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-29 03:13:07,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 03:13:07,099 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-29 03:13:07,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-29 03:13:07,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-29 03:13:07,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-29 03:13:07,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:07,100 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-29 03:13:07,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-29 03:13:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-29 03:13:07,106 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 03:13:07,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-29 03:13:07,108 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-29 03:13:07,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:13:07,109 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-29 03:13:07,109 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 03:13:07,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-29 03:13:07,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 03:13:07,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:07,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:07,112 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:07,112 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:07,113 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$Ultimate##0 ~n := #in~n; 367#L10 assume !(~n < 1); 395#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 379#$Ultimate##0 ~n := #in~n; 396#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 368#$Ultimate##0 ~n := #in~n; 370#L10 assume !(~n < 1); 373#L12 assume 1 == ~n;#res := 1; 374#fibo1FINAL assume true; 386#fibo1EXIT >#48#return; 355#L25-1 [2023-11-29 03:13:07,113 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 03:13:07,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:07,113 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-29 03:13:07,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:07,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031425993] [2023-11-29 03:13:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:07,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 03:13:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,226 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 03:13:07,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:07,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031425993] [2023-11-29 03:13:07,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031425993] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:07,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243239022] [2023-11-29 03:13:07,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:07,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:07,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,229 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:13:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:07,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:13:07,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:07,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-29 03:13:07,331 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 03:13:07,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:07,460 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 03:13:07,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243239022] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:07,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:07,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-29 03:13:07,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404042252] [2023-11-29 03:13:07,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:07,461 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 03:13:07,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:07,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-29 03:13:07,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:07,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984125891] [2023-11-29 03:13:07,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:07,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:07,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:13:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:07,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:13:07,657 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:07,657 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:07,658 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:07,658 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:07,658 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 03:13:07,658 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,658 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:07,658 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:07,658 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2023-11-29 03:13:07,658 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:07,658 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:07,659 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 03:13:07,662 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 03:13:07,664 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 03:13:07,666 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:13:07,669 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 03:13:07,672 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:13:07,677 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 03:13:07,680 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 03:13:07,682 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 03:13:07,736 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:07,737 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 03:13:07,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,738 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-29 03:13:07,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:07,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:07,754 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:07,754 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 03:13:07,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-29 03:13:07,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,758 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-29 03:13:07,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:07,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:07,777 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:07,777 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 03:13:07,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-29 03:13:07,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,782 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-29 03:13:07,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:07,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:07,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:07,796 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 03:13:07,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-11-29 03:13:07,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,801 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-29 03:13:07,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:07,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:07,818 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:07,818 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 03:13:07,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-11-29 03:13:07,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,822 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-29 03:13:07,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:07,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:07,837 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:07,837 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 03:13:07,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:07,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,841 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:07,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:07,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-29 03:13:07,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-29 03:13:07,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,860 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-29 03:13:07,862 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 03:13:07,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:07,876 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 03:13:07,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-29 03:13:07,879 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:07,879 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:07,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:07,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:07,880 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 03:13:07,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:07,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:07,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2023-11-29 03:13:07,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:07,880 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:07,881 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:13:07,884 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:13:07,886 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 03:13:07,888 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 03:13:07,890 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 03:13:07,896 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 03:13:07,898 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:13:07,901 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:13:07,903 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 03:13:07,945 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:07,945 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 03:13:07,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,946 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-29 03:13:07,949 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 03:13:07,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:07,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:07,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:07,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:07,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:07,961 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:07,961 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:07,963 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:07,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-11-29 03:13:07,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,966 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-29 03:13:07,969 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 03:13:07,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:07,979 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:07,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:07,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:07,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:07,980 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:07,980 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:07,981 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:07,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-29 03:13:07,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:07,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:07,984 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:07,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-29 03:13:07,986 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 03:13:07,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:07,997 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:07,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:07,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:07,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:07,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:07,998 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:07,999 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:08,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-29 03:13:08,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:08,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:08,003 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:08,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-29 03:13:08,006 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 03:13:08,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:08,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:08,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:08,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:08,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:08,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:08,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:08,018 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:08,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-29 03:13:08,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:08,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:08,022 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:08,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-29 03:13:08,024 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 03:13:08,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:08,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:08,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:08,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:08,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:08,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:08,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:08,038 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 03:13:08,041 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 03:13:08,042 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 03:13:08,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:08,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:08,043 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:08,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-29 03:13:08,044 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 03:13:08,044 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 03:13:08,045 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 03:13:08,045 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-29 03:13:08,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:08,048 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 03:13:08,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:08,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:13:08,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:08,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:13:08,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:08,317 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 03:13:08,318 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 03:13:08,318 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 03:13:08,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-29 03:13:08,796 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 03:13:08,797 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 03:13:08,798 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 03:13:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-29 03:13:08,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-29 03:13:08,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:08,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-29 03:13:08,801 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:08,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-29 03:13:08,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:08,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-29 03:13:08,810 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 03:13:08,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-29 03:13:08,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-29 03:13:08,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-29 03:13:08,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-29 03:13:08,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:08,820 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-29 03:13:08,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-29 03:13:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-29 03:13:08,837 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 03:13:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-29 03:13:08,840 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-29 03:13:08,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 03:13:08,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 03:13:08,841 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 03:13:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:09,093 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2023-11-29 03:13:09,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2023-11-29 03:13:09,100 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 03:13:09,106 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2023-11-29 03:13:09,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2023-11-29 03:13:09,107 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2023-11-29 03:13:09,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2023-11-29 03:13:09,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:09,108 INFO L218 hiAutomatonCegarLoop]: Abstraction has 204 states and 272 transitions. [2023-11-29 03:13:09,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2023-11-29 03:13:09,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2023-11-29 03:13:09,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 120 states have (on average 1.225) internal successors, (147), 129 states have internal predecessors, (147), 44 states have call successors, (46), 24 states have call predecessors, (46), 28 states have return successors, (64), 38 states have call predecessors, (64), 42 states have call successors, (64) [2023-11-29 03:13:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2023-11-29 03:13:09,129 INFO L240 hiAutomatonCegarLoop]: Abstraction has 192 states and 257 transitions. [2023-11-29 03:13:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:13:09,131 INFO L428 stractBuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2023-11-29 03:13:09,131 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 03:13:09,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2023-11-29 03:13:09,134 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 03:13:09,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:09,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:09,136 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 03:13:09,136 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:09,136 INFO L748 eck$LassoCheckResult]: Stem: 1313#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1276#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 1277#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1316#$Ultimate##0 ~n := #in~n; 1301#L10 assume !(~n < 1); 1302#L12 assume !(1 == ~n); 1246#L15 call #t~ret4 := fibo2(~n - 1);< 1353#$Ultimate##0 ~n := #in~n; 1352#L20 assume !(~n < 1); 1245#L22 assume !(1 == ~n); 1247#L25 call #t~ret6 := fibo1(~n - 1);< 1274#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1292#L12 assume !(1 == ~n); 1293#L15 call #t~ret4 := fibo2(~n - 1);< 1304#$Ultimate##0 ~n := #in~n; 1425#L20 assume !(~n < 1); 1424#L22 assume !(1 == ~n); 1278#L25 call #t~ret6 := fibo1(~n - 1);< 1346#$Ultimate##0 ~n := #in~n; 1347#L10 assume !(~n < 1); 1355#L12 assume !(1 == ~n); 1356#L15 call #t~ret4 := fibo2(~n - 1);< 1364#$Ultimate##0 ~n := #in~n; 1368#L20 assume ~n < 1;#res := 0; 1367#fibo2FINAL assume true; 1363#fibo2EXIT >#52#return; 1360#L15-1 call #t~ret5 := fibo2(~n - 2);< 1361#$Ultimate##0 ~n := #in~n; 1365#L20 assume ~n < 1;#res := 0; 1362#fibo2FINAL assume true; 1359#fibo2EXIT >#54#return; 1357#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1358#fibo1FINAL assume true; 1423#fibo1EXIT >#48#return; 1255#L25-1 call #t~ret7 := fibo1(~n - 2);< 1345#$Ultimate##0 ~n := #in~n; 1374#L10 assume ~n < 1;#res := 0; 1253#fibo1FINAL assume true; 1256#fibo1EXIT >#50#return; 1422#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1420#fibo2FINAL assume true; 1417#fibo2EXIT >#52#return; 1295#L15-1 call #t~ret5 := fibo2(~n - 2);< 1303#$Ultimate##0 [2023-11-29 03:13:09,136 INFO L750 eck$LassoCheckResult]: Loop: 1303#$Ultimate##0 ~n := #in~n; 1429#L20 assume !(~n < 1); 1430#L22 assume !(1 == ~n); 1272#L25 call #t~ret6 := fibo1(~n - 1);< 1269#$Ultimate##0 ~n := #in~n; 1273#L10 assume !(~n < 1); 1289#L12 assume !(1 == ~n); 1291#L15 call #t~ret4 := fibo2(~n - 1);< 1303#$Ultimate##0 [2023-11-29 03:13:09,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash 441703261, now seen corresponding path program 1 times [2023-11-29 03:13:09,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:09,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208436353] [2023-11-29 03:13:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:09,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:09,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:13:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 03:13:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 03:13:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:09,303 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 03:13:09,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208436353] [2023-11-29 03:13:09,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208436353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:09,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008502591] [2023-11-29 03:13:09,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:09,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:09,306 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:09,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 03:13:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:09,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:13:09,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:09,526 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 03:13:09,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:09,949 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 03:13:09,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008502591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:09,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:09,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2023-11-29 03:13:09,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424352551] [2023-11-29 03:13:09,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:09,951 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 03:13:09,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:09,951 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 2 times [2023-11-29 03:13:09,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:09,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529896494] [2023-11-29 03:13:09,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:09,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:09,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:13:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:09,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:13:10,067 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:10,067 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:10,067 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:10,067 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:10,067 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 03:13:10,067 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,067 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:10,067 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:10,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration4_Loop [2023-11-29 03:13:10,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:10,068 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:10,068 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 03:13:10,070 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 03:13:10,072 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 03:13:10,075 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 03:13:10,077 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 03:13:10,079 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 03:13:10,081 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 03:13:10,088 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 03:13:10,134 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:10,134 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 03:13:10,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,135 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-29 03:13:10,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:10,141 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:10,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:10,153 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 03:13:10,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2023-11-29 03:13:10,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,158 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-29 03:13:10,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:10,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:10,171 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:10,172 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 03:13:10,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:10,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,175 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-29 03:13:10,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:10,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:10,188 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:10,189 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 03:13:10,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2023-11-29 03:13:10,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,192 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-29 03:13:10,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:10,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:10,206 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:10,206 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 03:13:10,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2023-11-29 03:13:10,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,210 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-29 03:13:10,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:10,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:10,224 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:10,224 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 03:13:10,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:10,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,227 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-29 03:13:10,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:10,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:10,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:10,241 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 03:13:10,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:10,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,244 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-29 03:13:10,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:10,254 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:10,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:10,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,269 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-29 03:13:10,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 03:13:10,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:10,353 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 03:13:10,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2023-11-29 03:13:10,356 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:10,356 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:10,356 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:10,356 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:10,356 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 03:13:10,356 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,356 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:10,357 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:10,357 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration4_Loop [2023-11-29 03:13:10,357 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:10,357 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:10,358 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 03:13:10,360 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 03:13:10,361 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 03:13:10,362 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 03:13:10,364 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 03:13:10,365 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 03:13:10,367 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 03:13:10,374 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 03:13:10,410 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:10,410 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 03:13:10,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,411 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-29 03:13:10,413 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 03:13:10,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:10,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:10,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:10,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:10,424 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:10,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:10,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:10,426 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:10,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-11-29 03:13:10,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,430 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-29 03:13:10,432 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 03:13:10,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:10,442 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:10,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:10,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:10,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:10,443 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:10,443 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:10,444 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:10,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2023-11-29 03:13:10,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,449 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-29 03:13:10,451 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 03:13:10,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:10,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:10,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:10,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:10,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:10,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:10,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:10,464 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:10,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2023-11-29 03:13:10,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,468 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-29 03:13:10,471 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 03:13:10,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:10,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:10,481 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:10,481 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:10,481 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:10,482 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:10,482 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:10,484 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:10,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-11-29 03:13:10,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,487 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-29 03:13:10,489 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 03:13:10,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:10,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:10,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:10,502 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:10,502 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:10,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:10,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:10,504 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:10,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-11-29 03:13:10,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,508 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-29 03:13:10,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 03:13:10,521 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:10,521 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:10,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:10,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:10,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:10,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:10,522 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:10,523 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:10,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:10,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,528 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-29 03:13:10,531 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 03:13:10,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:10,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:10,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:10,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:10,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:10,544 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:10,544 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:10,547 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 03:13:10,550 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 03:13:10,550 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 03:13:10,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:10,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:10,557 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:10,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-29 03:13:10,562 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 03:13:10,562 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 03:13:10,562 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 03:13:10,562 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-29 03:13:10,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2023-11-29 03:13:10,566 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 03:13:10,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:10,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:13:10,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:10,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:13:10,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:11,026 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 03:13:11,027 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 03:13:11,027 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:13:11,195 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2023-11-29 03:13:11,195 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 03:13:11,196 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 03:13:11,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-29 03:13:11,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-29 03:13:11,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:11,197 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:13:11,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:11,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:13:11,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:11,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-11-29 03:13:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:11,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:13:11,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:11,627 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 03:13:11,628 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 03:13:11,628 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:13:11,792 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2023-11-29 03:13:11,793 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 03:13:11,794 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 03:13:11,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2023-11-29 03:13:11,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-29 03:13:11,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:11,795 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:13:11,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:11,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:13:11,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:12,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:13:12,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:12,200 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 03:13:12,200 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 03:13:12,201 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:13:12,361 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 587 states and 803 transitions. Complement of second has 25 states. [2023-11-29 03:13:12,362 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 03:13:12,362 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 03:13:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2023-11-29 03:13:12,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2023-11-29 03:13:12,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:12,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2023-11-29 03:13:12,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:12,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2023-11-29 03:13:12,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:12,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2023-11-29 03:13:12,374 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2023-11-29 03:13:12,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2023-11-29 03:13:12,383 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2023-11-29 03:13:12,384 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2023-11-29 03:13:12,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2023-11-29 03:13:12,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:12,385 INFO L218 hiAutomatonCegarLoop]: Abstraction has 476 states and 676 transitions. [2023-11-29 03:13:12,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2023-11-29 03:13:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2023-11-29 03:13:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 290 states have internal predecessors, (337), 78 states have call successors, (81), 60 states have call predecessors, (81), 56 states have return successors, (126), 50 states have call predecessors, (126), 76 states have call successors, (126) [2023-11-29 03:13:12,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2023-11-29 03:13:12,415 INFO L240 hiAutomatonCegarLoop]: Abstraction has 401 states and 544 transitions. [2023-11-29 03:13:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:12,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 03:13:12,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:13:12,416 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 16 states have call successors, (21), 7 states have call predecessors, (21), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-29 03:13:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:12,936 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2023-11-29 03:13:12,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2023-11-29 03:13:12,944 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-29 03:13:12,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2023-11-29 03:13:12,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2023-11-29 03:13:12,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2023-11-29 03:13:12,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2023-11-29 03:13:12,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:12,954 INFO L218 hiAutomatonCegarLoop]: Abstraction has 457 states and 645 transitions. [2023-11-29 03:13:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2023-11-29 03:13:12,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2023-11-29 03:13:12,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 269 states have (on average 1.20817843866171) internal successors, (325), 298 states have internal predecessors, (325), 85 states have call successors, (87), 57 states have call predecessors, (87), 60 states have return successors, (161), 58 states have call predecessors, (161), 83 states have call successors, (161) [2023-11-29 03:13:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2023-11-29 03:13:12,976 INFO L240 hiAutomatonCegarLoop]: Abstraction has 414 states and 573 transitions. [2023-11-29 03:13:12,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:13:12,977 INFO L428 stractBuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2023-11-29 03:13:12,977 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 03:13:12,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2023-11-29 03:13:12,981 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2023-11-29 03:13:12,981 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:12,981 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:12,983 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:12,983 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:12,983 INFO L748 eck$LassoCheckResult]: Stem: 5357#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5322#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 5323#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5364#$Ultimate##0 ~n := #in~n; 5411#L10 assume !(~n < 1); 5410#L12 assume !(1 == ~n); 5406#L15 call #t~ret4 := fibo2(~n - 1);< 5409#$Ultimate##0 ~n := #in~n; 5408#L20 assume !(~n < 1); 5407#L22 assume !(1 == ~n); 5402#L25 call #t~ret6 := fibo1(~n - 1);< 5405#$Ultimate##0 ~n := #in~n; 5404#L10 assume !(~n < 1); 5403#L12 assume !(1 == ~n); 5398#L15 call #t~ret4 := fibo2(~n - 1);< 5401#$Ultimate##0 ~n := #in~n; 5400#L20 assume !(~n < 1); 5399#L22 assume !(1 == ~n); 5394#L25 call #t~ret6 := fibo1(~n - 1);< 5397#$Ultimate##0 ~n := #in~n; 5396#L10 assume !(~n < 1); 5395#L12 assume !(1 == ~n); 5379#L15 call #t~ret4 := fibo2(~n - 1);< 5377#$Ultimate##0 ~n := #in~n; 5387#L20 assume !(~n < 1); 5388#L22 assume !(1 == ~n); 5330#L25 call #t~ret6 := fibo1(~n - 1);< 5389#$Ultimate##0 ~n := #in~n; 5390#L10 assume !(~n < 1); 5510#L12 assume 1 == ~n;#res := 1; 5511#fibo1FINAL assume true; 5498#fibo1EXIT >#48#return; 5468#L25-1 call #t~ret7 := fibo1(~n - 2);< 5496#$Ultimate##0 ~n := #in~n; 5474#L10 assume !(~n < 1); 5475#L12 assume !(1 == ~n); 5461#L15 call #t~ret4 := fibo2(~n - 1);< 5466#$Ultimate##0 ~n := #in~n; 5465#L20 assume !(~n < 1); 5462#L22 assume 1 == ~n;#res := 1; 5463#fibo2FINAL assume true; 5602#fibo2EXIT >#52#return; 5525#L15-1 [2023-11-29 03:13:12,984 INFO L750 eck$LassoCheckResult]: Loop: 5525#L15-1 call #t~ret5 := fibo2(~n - 2);< 5530#$Ultimate##0 ~n := #in~n; 5302#L20 assume !(~n < 1); 5520#L22 assume !(1 == ~n); 5526#L25 call #t~ret6 := fibo1(~n - 1);< 5577#$Ultimate##0 ~n := #in~n; 5527#L10 assume !(~n < 1); 5528#L12 assume 1 == ~n;#res := 1; 5606#fibo1FINAL assume true; 5621#fibo1EXIT >#48#return; 5572#L25-1 call #t~ret7 := fibo1(~n - 2);< 5620#$Ultimate##0 ~n := #in~n; 5619#L10 assume !(~n < 1); 5618#L12 assume !(1 == ~n); 5298#L15 call #t~ret4 := fibo2(~n - 1);< 5297#$Ultimate##0 ~n := #in~n; 5301#L20 assume !(~n < 1); 5608#L22 assume 1 == ~n;#res := 1; 5605#fibo2FINAL assume true; 5600#fibo2EXIT >#52#return; 5525#L15-1 [2023-11-29 03:13:12,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1086211661, now seen corresponding path program 1 times [2023-11-29 03:13:12,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:12,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554237990] [2023-11-29 03:13:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:12,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:13:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 03:13:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,205 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:13,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:13,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554237990] [2023-11-29 03:13:13,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554237990] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:13,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562152110] [2023-11-29 03:13:13,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:13,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:13,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:13,207 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:13,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-29 03:13:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 03:13:13,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:13,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:13,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562152110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:13,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:13,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2023-11-29 03:13:13,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997372666] [2023-11-29 03:13:13,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:13,491 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 03:13:13,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:13,492 INFO L85 PathProgramCache]: Analyzing trace with hash -303531802, now seen corresponding path program 1 times [2023-11-29 03:13:13,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:13,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803782253] [2023-11-29 03:13:13,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:13,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:13:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 03:13:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:13:13,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:13,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803782253] [2023-11-29 03:13:13,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803782253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:13,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510545084] [2023-11-29 03:13:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:13,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:13,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:13,544 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:13,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 03:13:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:13:13,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:13:13,600 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:13,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 03:13:13,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510545084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:13,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:13,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-29 03:13:13,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358273508] [2023-11-29 03:13:13,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:13,662 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 03:13:13,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:13:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:13:13,663 INFO L87 Difference]: Start difference. First operand 414 states and 573 transitions. cyclomatic complexity: 166 Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:13:13,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:13,740 INFO L93 Difference]: Finished difference Result 384 states and 501 transitions. [2023-11-29 03:13:13,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 384 states and 501 transitions. [2023-11-29 03:13:13,746 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2023-11-29 03:13:13,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 384 states to 359 states and 475 transitions. [2023-11-29 03:13:13,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2023-11-29 03:13:13,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 222 [2023-11-29 03:13:13,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 359 states and 475 transitions. [2023-11-29 03:13:13,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:13,753 INFO L218 hiAutomatonCegarLoop]: Abstraction has 359 states and 475 transitions. [2023-11-29 03:13:13,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states and 475 transitions. [2023-11-29 03:13:13,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2023-11-29 03:13:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 227 states have (on average 1.1629955947136563) internal successors, (264), 244 states have internal predecessors, (264), 65 states have call successors, (66), 50 states have call predecessors, (66), 52 states have return successors, (119), 49 states have call predecessors, (119), 63 states have call successors, (119) [2023-11-29 03:13:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 449 transitions. [2023-11-29 03:13:13,768 INFO L240 hiAutomatonCegarLoop]: Abstraction has 344 states and 449 transitions. [2023-11-29 03:13:13,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:13:13,769 INFO L428 stractBuchiCegarLoop]: Abstraction has 344 states and 449 transitions. [2023-11-29 03:13:13,769 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-29 03:13:13,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 344 states and 449 transitions. [2023-11-29 03:13:13,773 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2023-11-29 03:13:13,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:13,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:13,776 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:13,776 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1] [2023-11-29 03:13:13,776 INFO L748 eck$LassoCheckResult]: Stem: 6577#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6530#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 6531#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6583#$Ultimate##0 ~n := #in~n; 6681#L10 assume !(~n < 1); 6680#L12 assume !(1 == ~n); 6676#L15 call #t~ret4 := fibo2(~n - 1);< 6679#$Ultimate##0 ~n := #in~n; 6678#L20 assume !(~n < 1); 6677#L22 assume !(1 == ~n); 6668#L25 call #t~ret6 := fibo1(~n - 1);< 6675#$Ultimate##0 ~n := #in~n; 6674#L10 assume !(~n < 1); 6673#L12 assume !(1 == ~n); 6664#L15 call #t~ret4 := fibo2(~n - 1);< 6667#$Ultimate##0 ~n := #in~n; 6666#L20 assume !(~n < 1); 6665#L22 assume !(1 == ~n); 6654#L25 call #t~ret6 := fibo1(~n - 1);< 6662#$Ultimate##0 ~n := #in~n; 6661#L10 assume !(~n < 1); 6660#L12 assume !(1 == ~n); 6539#L15 call #t~ret4 := fibo2(~n - 1);< 6649#$Ultimate##0 ~n := #in~n; 6647#L20 assume !(~n < 1); 6648#L22 assume !(1 == ~n); 6535#L25 call #t~ret6 := fibo1(~n - 1);< 6672#$Ultimate##0 ~n := #in~n; 6671#L10 assume !(~n < 1); 6670#L12 assume !(1 == ~n); 6540#L15 call #t~ret4 := fibo2(~n - 1);< 6649#$Ultimate##0 ~n := #in~n; 6647#L20 assume !(~n < 1); 6648#L22 assume !(1 == ~n); 6535#L25 call #t~ret6 := fibo1(~n - 1);< 6672#$Ultimate##0 ~n := #in~n; 6652#L10 assume !(~n < 1); 6653#L12 assume 1 == ~n;#res := 1; 6837#fibo1FINAL assume true; 6835#fibo1EXIT >#48#return; 6777#L25-1 call #t~ret7 := fibo1(~n - 2);< 6778#$Ultimate##0 ~n := #in~n; 6803#L10 assume ~n < 1;#res := 0; 6799#fibo1FINAL assume true; 6800#fibo1EXIT >#50#return; 6775#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6774#fibo2FINAL assume true; 6764#fibo2EXIT >#52#return; 6552#L15-1 [2023-11-29 03:13:13,776 INFO L750 eck$LassoCheckResult]: Loop: 6552#L15-1 call #t~ret5 := fibo2(~n - 2);< 6722#$Ultimate##0 ~n := #in~n; 6507#L20 assume !(~n < 1); 6718#L22 assume !(1 == ~n); 6528#L25 call #t~ret6 := fibo1(~n - 1);< 6527#$Ultimate##0 ~n := #in~n; 6529#L10 assume !(~n < 1); 6556#L12 assume !(1 == ~n); 6504#L15 call #t~ret4 := fibo2(~n - 1);< 6503#$Ultimate##0 ~n := #in~n; 6507#L20 assume !(~n < 1); 6718#L22 assume !(1 == ~n); 6528#L25 call #t~ret6 := fibo1(~n - 1);< 6527#$Ultimate##0 ~n := #in~n; 6529#L10 assume !(~n < 1); 6556#L12 assume !(1 == ~n); 6504#L15 call #t~ret4 := fibo2(~n - 1);< 6503#$Ultimate##0 ~n := #in~n; 6506#L20 assume !(~n < 1); 6771#L22 assume 1 == ~n;#res := 1; 6769#fibo2FINAL assume true; 6767#fibo2EXIT >#52#return; 6552#L15-1 call #t~ret5 := fibo2(~n - 2);< 6722#$Ultimate##0 ~n := #in~n; 6761#L20 assume ~n < 1;#res := 0; 6788#fibo2FINAL assume true; 6574#fibo2EXIT >#54#return; 6575#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6715#fibo1FINAL assume true; 6704#fibo1EXIT >#48#return; 6564#L25-1 call #t~ret7 := fibo1(~n - 2);< 6691#$Ultimate##0 ~n := #in~n; 6689#L10 assume !(~n < 1); 6687#L12 assume !(1 == ~n); 6562#L15 call #t~ret4 := fibo2(~n - 1);< 6568#$Ultimate##0 ~n := #in~n; 6773#L20 assume !(~n < 1); 6770#L22 assume !(1 == ~n); 6563#L25 call #t~ret6 := fibo1(~n - 1);< 6691#$Ultimate##0 ~n := #in~n; 6689#L10 assume !(~n < 1); 6687#L12 assume !(1 == ~n); 6562#L15 call #t~ret4 := fibo2(~n - 1);< 6568#$Ultimate##0 ~n := #in~n; 6773#L20 assume !(~n < 1); 6770#L22 assume !(1 == ~n); 6563#L25 call #t~ret6 := fibo1(~n - 1);< 6691#$Ultimate##0 ~n := #in~n; 6689#L10 assume !(~n < 1); 6687#L12 assume 1 == ~n;#res := 1; 6688#fibo1FINAL assume true; 6786#fibo1EXIT >#48#return; 6782#L25-1 call #t~ret7 := fibo1(~n - 2);< 6784#$Ultimate##0 ~n := #in~n; 6787#L10 assume ~n < 1;#res := 0; 6690#fibo1FINAL assume true; 6781#fibo1EXIT >#50#return; 6783#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6792#fibo2FINAL assume true; 6765#fibo2EXIT >#52#return; 6552#L15-1 call #t~ret5 := fibo2(~n - 2);< 6722#$Ultimate##0 ~n := #in~n; 6761#L20 assume ~n < 1;#res := 0; 6788#fibo2FINAL assume true; 6574#fibo2EXIT >#54#return; 6575#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6715#fibo1FINAL assume true; 6704#fibo1EXIT >#48#return; 6564#L25-1 call #t~ret7 := fibo1(~n - 2);< 6691#$Ultimate##0 ~n := #in~n; 6689#L10 assume !(~n < 1); 6687#L12 assume 1 == ~n;#res := 1; 6688#fibo1FINAL assume true; 6786#fibo1EXIT >#50#return; 6705#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6785#fibo2FINAL assume true; 6763#fibo2EXIT >#52#return; 6552#L15-1 call #t~ret5 := fibo2(~n - 2);< 6722#$Ultimate##0 ~n := #in~n; 6761#L20 assume ~n < 1;#res := 0; 6788#fibo2FINAL assume true; 6574#fibo2EXIT >#54#return; 6575#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6715#fibo1FINAL assume true; 6704#fibo1EXIT >#50#return; 6705#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6785#fibo2FINAL assume true; 6763#fibo2EXIT >#52#return; 6552#L15-1 [2023-11-29 03:13:13,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash -377478758, now seen corresponding path program 1 times [2023-11-29 03:13:13,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:13,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625627847] [2023-11-29 03:13:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:13,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-29 03:13:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:13:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:13:14,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625627847] [2023-11-29 03:13:14,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625627847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874034602] [2023-11-29 03:13:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:14,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:14,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:14,084 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:14,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 03:13:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 03:13:14,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:13:14,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 03:13:14,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874034602] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:14,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:14,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2023-11-29 03:13:14,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008859425] [2023-11-29 03:13:14,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:14,516 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 03:13:14,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:14,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1760406624, now seen corresponding path program 1 times [2023-11-29 03:13:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:14,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151692104] [2023-11-29 03:13:14,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 03:13:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:13:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 03:13:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:13:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 03:13:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 03:13:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 03:13:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,834 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 38 proven. 49 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-29 03:13:14,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:14,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151692104] [2023-11-29 03:13:14,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151692104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:14,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996849486] [2023-11-29 03:13:14,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:14,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:14,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:14,837 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:14,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-29 03:13:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:14,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:13:14,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 51 proven. 59 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 03:13:14,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 51 proven. 59 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 03:13:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996849486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:15,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-29 03:13:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023771329] [2023-11-29 03:13:15,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:15,440 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 03:13:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:15,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 03:13:15,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-11-29 03:13:15,441 INFO L87 Difference]: Start difference. First operand 344 states and 449 transitions. cyclomatic complexity: 111 Second operand has 26 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (13), 8 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 03:13:16,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:16,054 INFO L93 Difference]: Finished difference Result 449 states and 554 transitions. [2023-11-29 03:13:16,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 554 transitions. [2023-11-29 03:13:16,061 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2023-11-29 03:13:16,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 311 states and 380 transitions. [2023-11-29 03:13:16,065 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 211 [2023-11-29 03:13:16,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 211 [2023-11-29 03:13:16,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 311 states and 380 transitions. [2023-11-29 03:13:16,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:16,066 INFO L218 hiAutomatonCegarLoop]: Abstraction has 311 states and 380 transitions. [2023-11-29 03:13:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states and 380 transitions. [2023-11-29 03:13:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 299. [2023-11-29 03:13:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 197 states have (on average 1.1218274111675126) internal successors, (221), 207 states have internal predecessors, (221), 62 states have call successors, (63), 47 states have call predecessors, (63), 40 states have return successors, (77), 44 states have call predecessors, (77), 52 states have call successors, (77) [2023-11-29 03:13:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 361 transitions. [2023-11-29 03:13:16,079 INFO L240 hiAutomatonCegarLoop]: Abstraction has 299 states and 361 transitions. [2023-11-29 03:13:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-29 03:13:16,080 INFO L428 stractBuchiCegarLoop]: Abstraction has 299 states and 361 transitions. [2023-11-29 03:13:16,080 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-29 03:13:16,080 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 299 states and 361 transitions. [2023-11-29 03:13:16,083 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2023-11-29 03:13:16,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:16,083 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:16,084 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:16,084 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:16,085 INFO L748 eck$LassoCheckResult]: Stem: 8566#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8529#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 8530#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8570#$Ultimate##0 ~n := #in~n; 8640#L10 assume !(~n < 1); 8639#L12 assume !(1 == ~n); 8635#L15 call #t~ret4 := fibo2(~n - 1);< 8638#$Ultimate##0 ~n := #in~n; 8637#L20 assume !(~n < 1); 8636#L22 assume !(1 == ~n); 8631#L25 call #t~ret6 := fibo1(~n - 1);< 8634#$Ultimate##0 ~n := #in~n; 8633#L10 assume !(~n < 1); 8632#L12 assume !(1 == ~n); 8627#L15 call #t~ret4 := fibo2(~n - 1);< 8630#$Ultimate##0 ~n := #in~n; 8629#L20 assume !(~n < 1); 8628#L22 assume !(1 == ~n); 8620#L25 call #t~ret6 := fibo1(~n - 1);< 8626#$Ultimate##0 ~n := #in~n; 8625#L10 assume !(~n < 1); 8624#L12 assume !(1 == ~n); 8549#L15 call #t~ret4 := fibo2(~n - 1);< 8619#$Ultimate##0 ~n := #in~n; 8617#L20 assume !(~n < 1); 8610#L22 assume !(1 == ~n); 8542#L25 call #t~ret6 := fibo1(~n - 1);< 8593#$Ultimate##0 ~n := #in~n; 8613#L10 assume !(~n < 1); 8605#L12 assume !(1 == ~n); 8602#L15 call #t~ret4 := fibo2(~n - 1);< 8603#$Ultimate##0 ~n := #in~n; 8608#L20 assume !(~n < 1); 8607#L22 assume 1 == ~n;#res := 1; 8606#fibo2FINAL assume true; 8601#fibo2EXIT >#52#return; 8598#L15-1 call #t~ret5 := fibo2(~n - 2);< 8599#$Ultimate##0 ~n := #in~n; 8604#L20 assume ~n < 1;#res := 0; 8600#fibo2FINAL assume true; 8597#fibo2EXIT >#54#return; 8596#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8595#fibo1FINAL assume true; 8592#fibo1EXIT >#48#return; 8507#L25-1 call #t~ret7 := fibo1(~n - 2);< 8590#$Ultimate##0 ~n := #in~n; 8647#L10 assume ~n < 1;#res := 0; 8506#fibo1FINAL assume true; 8508#fibo1EXIT >#50#return; 8745#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8743#fibo2FINAL assume true; 8740#fibo2EXIT >#52#return; 8496#L15-1 call #t~ret5 := fibo2(~n - 2);< 8540#$Ultimate##0 [2023-11-29 03:13:16,085 INFO L750 eck$LassoCheckResult]: Loop: 8540#$Ultimate##0 ~n := #in~n; 8561#L20 assume !(~n < 1); 8491#L22 assume !(1 == ~n); 8498#L25 call #t~ret6 := fibo1(~n - 1);< 8531#$Ultimate##0 ~n := #in~n; 8747#L10 assume !(~n < 1); 8546#L12 assume !(1 == ~n); 8492#L15 call #t~ret4 := fibo2(~n - 1);< 8654#$Ultimate##0 ~n := #in~n; 8652#L20 assume !(~n < 1); 8650#L22 assume 1 == ~n;#res := 1; 8651#fibo2FINAL assume true; 8738#fibo2EXIT >#52#return; 8497#L15-1 call #t~ret5 := fibo2(~n - 2);< 8540#$Ultimate##0 [2023-11-29 03:13:16,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:16,085 INFO L85 PathProgramCache]: Analyzing trace with hash 138509055, now seen corresponding path program 1 times [2023-11-29 03:13:16,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:16,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930920483] [2023-11-29 03:13:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:16,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:16,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 03:13:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:16,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:16,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:13:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:16,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 03:13:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 03:13:16,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:16,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930920483] [2023-11-29 03:13:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930920483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651821189] [2023-11-29 03:13:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:16,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:16,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:16,377 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:16,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 03:13:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:16,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 03:13:16,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 03:13:16,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:16,760 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 03:13:16,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651821189] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:16,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:16,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2023-11-29 03:13:16,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107482133] [2023-11-29 03:13:16,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:16,761 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 03:13:16,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:16,762 INFO L85 PathProgramCache]: Analyzing trace with hash -93894958, now seen corresponding path program 1 times [2023-11-29 03:13:16,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:16,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018201996] [2023-11-29 03:13:16,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:16,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:16,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:13:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:16,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:13:16,887 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:16,887 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:16,887 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:16,887 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:16,887 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 03:13:16,887 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:16,887 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:16,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:16,887 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2023-11-29 03:13:16,887 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:16,888 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:16,888 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 03:13:16,890 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 03:13:16,893 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 03:13:16,897 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 03:13:16,899 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 03:13:16,900 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 03:13:16,902 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 03:13:16,906 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 03:13:16,934 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:16,934 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 03:13:16,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:16,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:16,936 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:16,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-11-29 03:13:16,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:16,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:16,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:16,949 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 03:13:16,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2023-11-29 03:13:16,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:16,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:16,953 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:16,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-29 03:13:16,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:16,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:16,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:16,967 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 03:13:16,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:16,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:16,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:16,971 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:16,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-29 03:13:16,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:16,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:16,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2023-11-29 03:13:16,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:16,988 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:16,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-29 03:13:16,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 03:13:16,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:17,006 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 03:13:17,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2023-11-29 03:13:17,008 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:17,009 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:17,009 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:17,009 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:17,009 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 03:13:17,009 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:17,009 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:17,009 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:17,009 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2023-11-29 03:13:17,009 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:17,009 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:17,010 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 03:13:17,012 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 03:13:17,014 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 03:13:17,015 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 03:13:17,020 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 03:13:17,021 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 03:13:17,023 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 03:13:17,024 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 03:13:17,048 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:17,048 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 03:13:17,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:17,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:17,049 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:17,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-29 03:13:17,051 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 03:13:17,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:17,061 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:17,061 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:17,061 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:17,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:17,062 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:17,062 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:17,064 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:17,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2023-11-29 03:13:17,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:17,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:17,068 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:17,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-29 03:13:17,073 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 03:13:17,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:17,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:17,083 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:17,083 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:17,083 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:17,084 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:17,084 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:17,085 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:17,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2023-11-29 03:13:17,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:17,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:17,089 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:17,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-29 03:13:17,091 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 03:13:17,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:17,101 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:17,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:17,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:17,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:17,102 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:17,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:17,103 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:17,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:17,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:17,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:17,106 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:17,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-29 03:13:17,108 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 03:13:17,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:17,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:17,119 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:17,119 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:17,119 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:17,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:17,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:17,122 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 03:13:17,123 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 03:13:17,123 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 03:13:17,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:17,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:17,124 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:17,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-29 03:13:17,129 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 03:13:17,129 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 03:13:17,129 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 03:13:17,130 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-29 03:13:17,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2023-11-29 03:13:17,132 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 03:13:17,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:17,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 03:13:17,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:17,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2023-11-29 03:13:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:17,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:13:17,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:17,588 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 03:13:17,589 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 03:13:17,589 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 299 states and 361 transitions. cyclomatic complexity: 67 Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:13:17,837 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 299 states and 361 transitions. cyclomatic complexity: 67. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 372 states and 443 transitions. Complement of second has 28 states. [2023-11-29 03:13:17,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-29 03:13:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:13:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2023-11-29 03:13:17,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 53 letters. Loop has 14 letters. [2023-11-29 03:13:17,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:17,840 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:13:17,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:17,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 03:13:17,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:18,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:13:18,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:18,244 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 03:13:18,245 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 03:13:18,245 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 299 states and 361 transitions. cyclomatic complexity: 67 Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:13:18,472 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 299 states and 361 transitions. cyclomatic complexity: 67. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 372 states and 443 transitions. Complement of second has 28 states. [2023-11-29 03:13:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-29 03:13:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:13:18,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2023-11-29 03:13:18,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 53 letters. Loop has 14 letters. [2023-11-29 03:13:18,474 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:18,474 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:13:18,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:18,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 03:13:18,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:18,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:13:18,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:18,927 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 03:13:18,928 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 03:13:18,928 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 299 states and 361 transitions. cyclomatic complexity: 67 Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:13:19,184 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 299 states and 361 transitions. cyclomatic complexity: 67. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 599 states and 709 transitions. Complement of second has 30 states. [2023-11-29 03:13:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-29 03:13:19,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 03:13:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 56 transitions. [2023-11-29 03:13:19,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 56 transitions. Stem has 53 letters. Loop has 14 letters. [2023-11-29 03:13:19,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:19,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 56 transitions. Stem has 67 letters. Loop has 14 letters. [2023-11-29 03:13:19,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:19,187 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 56 transitions. Stem has 53 letters. Loop has 28 letters. [2023-11-29 03:13:19,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:19,188 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 599 states and 709 transitions. [2023-11-29 03:13:19,196 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 66 [2023-11-29 03:13:19,201 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 599 states to 398 states and 493 transitions. [2023-11-29 03:13:19,201 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 209 [2023-11-29 03:13:19,202 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 228 [2023-11-29 03:13:19,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 398 states and 493 transitions. [2023-11-29 03:13:19,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:19,203 INFO L218 hiAutomatonCegarLoop]: Abstraction has 398 states and 493 transitions. [2023-11-29 03:13:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states and 493 transitions. [2023-11-29 03:13:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 336. [2023-11-29 03:13:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 219 states have (on average 1.1278538812785388) internal successors, (247), 231 states have internal predecessors, (247), 69 states have call successors, (70), 51 states have call predecessors, (70), 48 states have return successors, (90), 53 states have call predecessors, (90), 59 states have call successors, (90) [2023-11-29 03:13:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 407 transitions. [2023-11-29 03:13:19,215 INFO L240 hiAutomatonCegarLoop]: Abstraction has 336 states and 407 transitions. [2023-11-29 03:13:19,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:19,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 03:13:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:13:19,216 INFO L87 Difference]: Start difference. First operand 336 states and 407 transitions. Second operand has 24 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 18 states have internal predecessors, (49), 12 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 03:13:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:19,534 INFO L93 Difference]: Finished difference Result 341 states and 404 transitions. [2023-11-29 03:13:19,534 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 404 transitions. [2023-11-29 03:13:19,538 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2023-11-29 03:13:19,543 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 339 states and 402 transitions. [2023-11-29 03:13:19,543 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 212 [2023-11-29 03:13:19,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 212 [2023-11-29 03:13:19,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 339 states and 402 transitions. [2023-11-29 03:13:19,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:19,544 INFO L218 hiAutomatonCegarLoop]: Abstraction has 339 states and 402 transitions. [2023-11-29 03:13:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states and 402 transitions. [2023-11-29 03:13:19,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2023-11-29 03:13:19,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 222 states have (on average 1.1216216216216217) internal successors, (249), 233 states have internal predecessors, (249), 69 states have call successors, (70), 52 states have call predecessors, (70), 48 states have return successors, (83), 53 states have call predecessors, (83), 59 states have call successors, (83) [2023-11-29 03:13:19,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 402 transitions. [2023-11-29 03:13:19,554 INFO L240 hiAutomatonCegarLoop]: Abstraction has 339 states and 402 transitions. [2023-11-29 03:13:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 03:13:19,555 INFO L428 stractBuchiCegarLoop]: Abstraction has 339 states and 402 transitions. [2023-11-29 03:13:19,555 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-29 03:13:19,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 339 states and 402 transitions. [2023-11-29 03:13:19,558 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2023-11-29 03:13:19,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:19,558 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:19,559 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:19,559 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:19,560 INFO L748 eck$LassoCheckResult]: Stem: 12050#$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); 12022#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 12023#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 12054#$Ultimate##0 ~n := #in~n; 12151#L10 assume !(~n < 1); 12149#L12 assume !(1 == ~n); 12146#L15 call #t~ret4 := fibo2(~n - 1);< 12147#$Ultimate##0 ~n := #in~n; 12166#L20 assume !(~n < 1); 12161#L22 assume !(1 == ~n); 12157#L25 call #t~ret6 := fibo1(~n - 1);< 12158#$Ultimate##0 ~n := #in~n; 12207#L10 assume !(~n < 1); 12206#L12 assume !(1 == ~n); 12173#L15 call #t~ret4 := fibo2(~n - 1);< 12174#$Ultimate##0 ~n := #in~n; 12202#L20 assume !(~n < 1); 12201#L22 assume !(1 == ~n); 12199#L25 call #t~ret6 := fibo1(~n - 1);< 12200#$Ultimate##0 ~n := #in~n; 12282#L10 assume !(~n < 1); 12277#L12 assume !(1 == ~n); 12033#L15 call #t~ret4 := fibo2(~n - 1);< 12044#$Ultimate##0 ~n := #in~n; 12116#L20 assume !(~n < 1); 12111#L22 assume !(1 == ~n); 12028#L25 call #t~ret6 := fibo1(~n - 1);< 12094#$Ultimate##0 ~n := #in~n; 12108#L10 assume !(~n < 1); 12106#L12 assume !(1 == ~n); 12102#L15 call #t~ret4 := fibo2(~n - 1);< 12103#$Ultimate##0 ~n := #in~n; 12109#L20 assume !(~n < 1); 12107#L22 assume 1 == ~n;#res := 1; 12105#fibo2FINAL assume true; 12101#fibo2EXIT >#52#return; 12098#L15-1 call #t~ret5 := fibo2(~n - 2);< 12099#$Ultimate##0 ~n := #in~n; 12104#L20 assume ~n < 1;#res := 0; 12100#fibo2FINAL assume true; 12097#fibo2EXIT >#54#return; 12096#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12095#fibo1FINAL assume true; 12093#fibo1EXIT >#48#return; 12004#L25-1 call #t~ret7 := fibo1(~n - 2);< 12016#$Ultimate##0 ~n := #in~n; 12091#L10 assume !(~n < 1); 12090#L12 assume !(1 == ~n); 12015#L15 call #t~ret4 := fibo2(~n - 1);< 12089#$Ultimate##0 ~n := #in~n; 12088#L20 assume !(~n < 1); 12086#L22 assume 1 == ~n;#res := 1; 12087#fibo2FINAL assume true; 12258#fibo2EXIT >#52#return; 12120#L15-1 [2023-11-29 03:13:19,560 INFO L750 eck$LassoCheckResult]: Loop: 12120#L15-1 call #t~ret5 := fibo2(~n - 2);< 12131#$Ultimate##0 ~n := #in~n; 12077#L20 assume !(~n < 1); 12130#L22 assume !(1 == ~n); 12080#L25 call #t~ret6 := fibo1(~n - 1);< 12123#$Ultimate##0 ~n := #in~n; 12243#L10 assume !(~n < 1); 12110#L12 assume !(1 == ~n); 12036#L15 call #t~ret4 := fibo2(~n - 1);< 12076#$Ultimate##0 ~n := #in~n; 12072#L20 assume !(~n < 1); 12070#L22 assume 1 == ~n;#res := 1; 12071#fibo2FINAL assume true; 12291#fibo2EXIT >#52#return; 12118#L15-1 call #t~ret5 := fibo2(~n - 2);< 12133#$Ultimate##0 ~n := #in~n; 12134#L20 assume ~n < 1;#res := 0; 12252#fibo2FINAL assume true; 12285#fibo2EXIT >#54#return; 12218#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12284#fibo1FINAL assume true; 12280#fibo1EXIT >#48#return; 12256#L25-1 call #t~ret7 := fibo1(~n - 2);< 12281#$Ultimate##0 ~n := #in~n; 12289#L10 assume !(~n < 1); 12261#L12 assume !(1 == ~n); 12224#L15 call #t~ret4 := fibo2(~n - 1);< 12228#$Ultimate##0 ~n := #in~n; 12266#L20 assume !(~n < 1); 12265#L22 assume 1 == ~n;#res := 1; 12226#fibo2FINAL assume true; 12259#fibo2EXIT >#52#return; 12120#L15-1 [2023-11-29 03:13:19,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:19,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1790184504, now seen corresponding path program 1 times [2023-11-29 03:13:19,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:19,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387458725] [2023-11-29 03:13:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:19,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:19,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:13:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:13:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:19,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 03:13:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:13:19,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:19,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387458725] [2023-11-29 03:13:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387458725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:19,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378891032] [2023-11-29 03:13:19,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:19,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:19,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:19,793 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:19,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-29 03:13:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:19,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 03:13:19,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:13:19,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:20,120 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 03:13:20,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378891032] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:20,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:20,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2023-11-29 03:13:20,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171982696] [2023-11-29 03:13:20,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:20,121 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 03:13:20,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1088847483, now seen corresponding path program 1 times [2023-11-29 03:13:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446686552] [2023-11-29 03:13:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:13:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:20,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:13:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:20,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 03:13:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:13:20,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:20,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446686552] [2023-11-29 03:13:20,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446686552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:20,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375149859] [2023-11-29 03:13:20,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:20,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:20,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:20,220 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:20,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-11-29 03:13:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:20,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:13:20,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 03:13:20,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 03:13:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375149859] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:20,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:20,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2023-11-29 03:13:20,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39596180] [2023-11-29 03:13:20,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:20,524 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 03:13:20,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:20,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 03:13:20,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-11-29 03:13:20,525 INFO L87 Difference]: Start difference. First operand 339 states and 402 transitions. cyclomatic complexity: 68 Second operand has 18 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 03:13:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:20,721 INFO L93 Difference]: Finished difference Result 289 states and 353 transitions. [2023-11-29 03:13:20,721 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 289 states and 353 transitions. [2023-11-29 03:13:20,725 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-29 03:13:20,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 289 states to 272 states and 331 transitions. [2023-11-29 03:13:20,727 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 202 [2023-11-29 03:13:20,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 231 [2023-11-29 03:13:20,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 331 transitions. [2023-11-29 03:13:20,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:13:20,728 INFO L218 hiAutomatonCegarLoop]: Abstraction has 272 states and 331 transitions. [2023-11-29 03:13:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states and 331 transitions. [2023-11-29 03:13:20,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 264. [2023-11-29 03:13:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 173 states have (on average 1.1040462427745665) internal successors, (191), 175 states have internal predecessors, (191), 53 states have call successors, (53), 40 states have call predecessors, (53), 38 states have return successors, (75), 48 states have call predecessors, (75), 49 states have call successors, (75) [2023-11-29 03:13:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 319 transitions. [2023-11-29 03:13:20,734 INFO L240 hiAutomatonCegarLoop]: Abstraction has 264 states and 319 transitions. [2023-11-29 03:13:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 03:13:20,735 INFO L428 stractBuchiCegarLoop]: Abstraction has 264 states and 319 transitions. [2023-11-29 03:13:20,735 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-29 03:13:20,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 264 states and 319 transitions. [2023-11-29 03:13:20,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-29 03:13:20,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:13:20,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:13:20,739 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:20,739 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:13:20,739 INFO L748 eck$LassoCheckResult]: Stem: 13301#$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); 13270#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 13271#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 13305#$Ultimate##0 ~n := #in~n; 13342#L10 assume !(~n < 1); 13340#L12 assume !(1 == ~n); 13335#L15 call #t~ret4 := fibo2(~n - 1);< 13336#$Ultimate##0 ~n := #in~n; 13353#L20 assume !(~n < 1); 13350#L22 assume !(1 == ~n); 13348#L25 call #t~ret6 := fibo1(~n - 1);< 13349#$Ultimate##0 ~n := #in~n; 13368#L10 assume !(~n < 1); 13366#L12 assume !(1 == ~n); 13361#L15 call #t~ret4 := fibo2(~n - 1);< 13362#$Ultimate##0 ~n := #in~n; 13376#L20 assume !(~n < 1); 13374#L22 assume !(1 == ~n); 13371#L25 call #t~ret6 := fibo1(~n - 1);< 13372#$Ultimate##0 ~n := #in~n; 13387#L10 assume !(~n < 1); 13385#L12 assume !(1 == ~n); 13381#L15 call #t~ret4 := fibo2(~n - 1);< 13382#$Ultimate##0 ~n := #in~n; 13411#L20 assume !(~n < 1); 13407#L22 assume !(1 == ~n); 13400#L25 call #t~ret6 := fibo1(~n - 1);< 13401#$Ultimate##0 ~n := #in~n; 13443#L10 assume !(~n < 1); 13441#L12 assume !(1 == ~n); 13413#L15 call #t~ret4 := fibo2(~n - 1);< 13414#$Ultimate##0 ~n := #in~n; 13425#L20 assume !(~n < 1); 13424#L22 assume 1 == ~n;#res := 1; 13421#fibo2FINAL assume true; 13412#fibo2EXIT >#52#return; 13409#L15-1 call #t~ret5 := fibo2(~n - 2);< 13410#$Ultimate##0 ~n := #in~n; 13437#L20 assume ~n < 1;#res := 0; 13434#fibo2FINAL assume true; 13408#fibo2EXIT >#54#return; 13406#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13405#fibo1FINAL assume true; 13399#fibo1EXIT >#48#return; 13397#L25-1 call #t~ret7 := fibo1(~n - 2);< 13398#$Ultimate##0 ~n := #in~n; 13478#L10 assume !(~n < 1); 13477#L12 assume 1 == ~n;#res := 1; 13475#fibo1FINAL assume true; 13396#fibo1EXIT >#50#return; 13394#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 13393#fibo2FINAL assume true; 13380#fibo2EXIT >#52#return; 13277#L15-1 call #t~ret5 := fibo2(~n - 2);< 13337#$Ultimate##0 ~n := #in~n; 13338#L20 assume !(~n < 1); 13390#L22 assume 1 == ~n;#res := 1; 13379#fibo2FINAL assume true; 13378#fibo2EXIT >#54#return; 13375#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 13373#fibo1FINAL assume true; 13370#fibo1EXIT >#48#return; 13250#L25-1 call #t~ret7 := fibo1(~n - 2);< 13369#$Ultimate##0 ~n := #in~n; 13289#L10 assume !(~n < 1); 13290#L12 assume !(1 == ~n); 13403#L15 call #t~ret4 := fibo2(~n - 1);< 13295#$Ultimate##0 [2023-11-29 03:13:20,739 INFO L750 eck$LassoCheckResult]: Loop: 13295#$Ultimate##0 ~n := #in~n; 13449#L20 assume !(~n < 1); 13444#L22 assume !(1 == ~n); 13294#L25 call #t~ret6 := fibo1(~n - 1);< 13423#$Ultimate##0 ~n := #in~n; 13496#L10 assume !(~n < 1); 13495#L12 assume !(1 == ~n); 13293#L15 call #t~ret4 := fibo2(~n - 1);< 13295#$Ultimate##0 [2023-11-29 03:13:20,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash -96157049, now seen corresponding path program 1 times [2023-11-29 03:13:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:20,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403411107] [2023-11-29 03:13:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:20,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:20,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 03:13:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:13:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:21,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:13:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:21,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 03:13:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:21,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:13:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 03:13:21,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:13:21,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403411107] [2023-11-29 03:13:21,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403411107] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:13:21,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917410362] [2023-11-29 03:13:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:21,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:13:21,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,032 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-11-29 03:13:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:21,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:13:21,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 03:13:21,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:13:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-29 03:13:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917410362] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:13:21,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:13:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 25 [2023-11-29 03:13:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248111207] [2023-11-29 03:13:21,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:13:21,416 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 03:13:21,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:21,416 INFO L85 PathProgramCache]: Analyzing trace with hash 996300776, now seen corresponding path program 3 times [2023-11-29 03:13:21,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:13:21,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201908934] [2023-11-29 03:13:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:13:21,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:13:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:21,419 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:13:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:13:21,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:13:21,503 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:21,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:21,503 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:21,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:21,503 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 03:13:21,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:21,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:21,503 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration9_Loop [2023-11-29 03:13:21,503 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:21,504 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:21,504 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 03:13:21,506 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 03:13:21,508 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 03:13:21,509 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 03:13:21,511 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 03:13:21,513 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 03:13:21,514 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 03:13:21,515 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:13:21,554 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:21,554 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 03:13:21,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,555 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-29 03:13:21,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:21,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:21,569 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:21,569 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 03:13:21,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2023-11-29 03:13:21,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,572 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-29 03:13:21,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:21,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:21,586 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:21,586 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 03:13:21,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:21,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,589 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-29 03:13:21,591 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:21,591 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:21,605 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:21,605 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 03:13:21,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-29 03:13:21,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,609 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-29 03:13:21,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:21,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:21,623 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:21,623 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 03:13:21,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2023-11-29 03:13:21,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,628 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2023-11-29 03:13:21,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:21,630 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:21,642 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:21,642 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 03:13:21,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2023-11-29 03:13:21,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,646 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2023-11-29 03:13:21,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:21,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:21,659 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:21,659 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 03:13:21,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2023-11-29 03:13:21,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,662 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2023-11-29 03:13:21,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:21,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:21,676 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:13:21,676 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 03:13:21,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:21,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,679 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2023-11-29 03:13:21,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:13:21,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:21,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2023-11-29 03:13:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,696 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2023-11-29 03:13:21,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 03:13:21,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:13:21,763 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 03:13:21,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Ended with exit code 0 [2023-11-29 03:13:21,766 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:13:21,766 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:13:21,766 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:13:21,766 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:13:21,766 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 03:13:21,766 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,766 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:13:21,766 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:13:21,766 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration9_Loop [2023-11-29 03:13:21,766 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:13:21,767 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:13:21,767 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 03:13:21,769 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 03:13:21,770 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 03:13:21,771 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 03:13:21,772 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 03:13:21,773 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 03:13:21,774 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 03:13:21,776 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 03:13:21,812 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:13:21,812 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 03:13:21,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,813 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2023-11-29 03:13:21,815 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 03:13:21,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:21,826 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:21,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:21,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:21,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:21,826 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:21,826 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:21,827 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:21,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2023-11-29 03:13:21,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,831 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2023-11-29 03:13:21,833 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 03:13:21,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:21,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:21,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:21,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:21,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:21,844 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:21,844 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:21,845 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:21,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:21,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,849 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2023-11-29 03:13:21,851 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 03:13:21,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:21,861 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:21,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:21,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:21,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:21,861 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:21,861 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:21,863 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:21,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:21,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,866 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2023-11-29 03:13:21,868 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 03:13:21,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:21,878 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:21,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:21,878 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:21,878 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:21,879 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:21,879 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:21,880 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:21,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2023-11-29 03:13:21,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,883 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2023-11-29 03:13:21,885 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 03:13:21,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:21,895 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:21,896 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:21,896 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:21,896 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:21,896 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:21,896 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:21,897 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:21,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2023-11-29 03:13:21,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,901 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2023-11-29 03:13:21,903 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 03:13:21,913 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:21,913 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:21,913 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:21,913 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:21,913 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:21,914 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:21,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:21,915 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:21,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2023-11-29 03:13:21,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,919 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2023-11-29 03:13:21,921 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 03:13:21,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:21,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:21,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:21,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:21,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:21,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:21,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:21,933 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:13:21,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2023-11-29 03:13:21,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,936 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2023-11-29 03:13:21,938 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 03:13:21,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:13:21,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:13:21,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:13:21,948 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:13:21,948 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:13:21,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:13:21,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:13:21,951 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 03:13:21,953 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 03:13:21,953 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 03:13:21,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:13:21,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:13:21,954 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:13:21,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2023-11-29 03:13:21,956 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 03:13:21,956 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 03:13:21,956 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 03:13:21,956 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2023-11-29 03:13:21,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2023-11-29 03:13:21,959 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 03:13:21,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:22,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:13:22,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:22,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2023-11-29 03:13:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:22,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:13:22,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:22,405 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 03:13:22,406 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 03:13:22,406 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 319 transitions. cyclomatic complexity: 57 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:13:22,499 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 319 transitions. cyclomatic complexity: 57. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 289 states and 344 transitions. Complement of second has 15 states. [2023-11-29 03:13:22,500 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 03:13:22,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:13:22,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-29 03:13:22,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-29 03:13:22,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:22,501 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:13:22,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:22,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:13:22,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:22,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:13:22,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:22,921 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 03:13:22,921 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 03:13:22,921 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 319 transitions. cyclomatic complexity: 57 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:13:22,985 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 319 transitions. cyclomatic complexity: 57. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 289 states and 344 transitions. Complement of second has 15 states. [2023-11-29 03:13:22,986 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 03:13:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:13:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2023-11-29 03:13:22,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-29 03:13:22,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:22,987 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:13:22,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:13:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:23,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:13:23,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:13:23,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 03:13:23,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:13:23,421 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 03:13:23,421 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 03:13:23,422 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 264 states and 319 transitions. cyclomatic complexity: 57 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:13:23,537 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 264 states and 319 transitions. cyclomatic complexity: 57. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 424 states and 500 transitions. Complement of second has 25 states. [2023-11-29 03:13:23,537 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 03:13:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 03:13:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-29 03:13:23,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2023-11-29 03:13:23,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:23,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 75 letters. Loop has 8 letters. [2023-11-29 03:13:23,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:23,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 16 letters. [2023-11-29 03:13:23,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:13:23,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 424 states and 500 transitions. [2023-11-29 03:13:23,543 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 03:13:23,543 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 424 states to 0 states and 0 transitions. [2023-11-29 03:13:23,543 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 03:13:23,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 03:13:23,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 03:13:23,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:13:23,544 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:13:23,544 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:13:23,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:13:23,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 03:13:23,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-29 03:13:23,545 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 25 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 13 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-29 03:13:23,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:23,545 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-29 03:13:23,545 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-29 03:13:23,545 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 03:13:23,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 03:13:23,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 03:13:23,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 03:13:23,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 03:13:23,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:13:23,545 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:13:23,545 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:13:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:13:23,546 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:13:23,546 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-29 03:13:23,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-29 03:13:23,546 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 03:13:23,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-29 03:13:23,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 03:13:23 BoogieIcfgContainer [2023-11-29 03:13:23,552 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 03:13:23,553 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:13:23,553 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:13:23,553 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:13:23,554 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:13:05" (3/4) ... [2023-11-29 03:13:23,555 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 03:13:23,557 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:13:23,557 INFO L158 Benchmark]: Toolchain (without parser) took 18926.69ms. Allocated memory was 169.9MB in the beginning and 255.9MB in the end (delta: 86.0MB). Free memory was 131.0MB in the beginning and 176.9MB in the end (delta: -46.0MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-11-29 03:13:23,557 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 169.9MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:13:23,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.71ms. Allocated memory is still 169.9MB. Free memory was 131.0MB in the beginning and 120.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 03:13:23,558 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.08ms. Allocated memory is still 169.9MB. Free memory was 120.5MB in the beginning and 118.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:13:23,558 INFO L158 Benchmark]: Boogie Preprocessor took 32.35ms. Allocated memory is still 169.9MB. Free memory was 118.9MB in the beginning and 117.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:13:23,559 INFO L158 Benchmark]: RCFGBuilder took 252.88ms. Allocated memory is still 169.9MB. Free memory was 117.4MB in the beginning and 107.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 03:13:23,559 INFO L158 Benchmark]: BuchiAutomizer took 18374.32ms. Allocated memory was 169.9MB in the beginning and 255.9MB in the end (delta: 86.0MB). Free memory was 107.9MB in the beginning and 178.0MB in the end (delta: -70.1MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-11-29 03:13:23,559 INFO L158 Benchmark]: Witness Printer took 3.63ms. Allocated memory is still 255.9MB. Free memory is still 176.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:13:23,561 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 169.9MB. Free memory is still 145.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.71ms. Allocated memory is still 169.9MB. Free memory was 131.0MB in the beginning and 120.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.08ms. Allocated memory is still 169.9MB. Free memory was 120.5MB in the beginning and 118.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.35ms. Allocated memory is still 169.9MB. Free memory was 118.9MB in the beginning and 117.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.88ms. Allocated memory is still 169.9MB. Free memory was 117.4MB in the beginning and 107.9MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 18374.32ms. Allocated memory was 169.9MB in the beginning and 255.9MB in the end (delta: 86.0MB). Free memory was 107.9MB in the beginning and 178.0MB in the end (delta: -70.1MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Witness Printer took 3.63ms. Allocated memory is still 255.9MB. Free memory is still 176.9MB. 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 13 terminating modules (8 trivial, 2 deterministic, 3 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 \old(n) and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.3s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 9.2s. Construction of modules took 1.8s. Büchi inclusion checks took 6.9s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 259 StatesRemovedByMinimization, 10 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, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1042 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1004 mSDsluCounter, 1688 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1297 mSDsCounter, 570 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2709 IncrementalHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 570 mSolverCounterUnsat, 391 mSDtfsCounter, 2709 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI4 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp91 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf93 smp67 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 27 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s 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 03:13:23,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2023-11-29 03:13:23,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2023-11-29 03:13:23,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:24,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:24,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:24,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:24,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:24,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:25,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:25,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 03:13:25,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cbd33b4-3e88-47af-8ff1-f2d2e84120e2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE