./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Fibonacci03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/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_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Fibonacci03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/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_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/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 be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:20:26,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:20:26,308 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 03:20:26,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:20:26,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:20:26,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:20:26,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:20:26,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:20:26,339 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:20:26,339 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:20:26,340 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:20:26,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:20:26,341 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:20:26,342 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 03:20:26,342 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 03:20:26,343 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 03:20:26,343 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 03:20:26,344 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 03:20:26,344 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 03:20:26,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:20:26,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 03:20:26,346 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:20:26,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:20:26,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:20:26,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:20:26,348 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 03:20:26,348 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 03:20:26,348 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 03:20:26,348 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:20:26,349 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:20:26,349 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:20:26,350 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 03:20:26,350 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:20:26,350 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:20:26,350 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:20:26,350 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:20:26,351 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:20:26,351 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 03:20:26,351 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_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be0a584ba9648c80e7a0523ff51ba530f1926c55cecd3c62f2cee05fbbff42e3 [2023-11-29 03:20:26,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:20:26,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:20:26,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:20:26,596 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:20:26,597 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:20:26,598 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive/Fibonacci03.c [2023-11-29 03:20:29,331 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:20:29,509 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:20:29,510 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/sv-benchmarks/c/recursive/Fibonacci03.c [2023-11-29 03:20:29,518 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/data/fa5e7c5f1/294190d4ff144e5589ac2c984f9d949a/FLAG636650ddf [2023-11-29 03:20:29,533 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/data/fa5e7c5f1/294190d4ff144e5589ac2c984f9d949a [2023-11-29 03:20:29,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:20:29,537 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:20:29,538 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:20:29,538 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:20:29,544 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:20:29,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f5fd0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29, skipping insertion in model container [2023-11-29 03:20:29,546 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,566 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:20:29,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:20:29,731 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:20:29,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:20:29,757 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:20:29,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29 WrapperNode [2023-11-29 03:20:29,757 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:20:29,759 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:20:29,759 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:20:29,759 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:20:29,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,789 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2023-11-29 03:20:29,790 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:20:29,791 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:20:29,791 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:20:29,791 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:20:29,802 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,803 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,814 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 03:20:29,814 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,817 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,819 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,820 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:20:29,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:20:29,824 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:20:29,824 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:20:29,825 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (1/1) ... [2023-11-29 03:20:29,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:29,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:29,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:29,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 03:20:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2023-11-29 03:20:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2023-11-29 03:20:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:20:29,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:20:29,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:20:29,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:20:29,960 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:20:29,962 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:20:30,093 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:20:30,102 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:20:30,102 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 03:20:30,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:20:30 BoogieIcfgContainer [2023-11-29 03:20:30,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:20:30,105 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 03:20:30,105 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 03:20:30,108 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 03:20:30,109 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 03:20:30,109 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 03:20:29" (1/3) ... [2023-11-29 03:20:30,110 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77f0e231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 03:20:30, skipping insertion in model container [2023-11-29 03:20:30,110 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 03:20:30,110 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:20:29" (2/3) ... [2023-11-29 03:20:30,110 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77f0e231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 03:20:30, skipping insertion in model container [2023-11-29 03:20:30,111 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 03:20:30,111 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:20:30" (3/3) ... [2023-11-29 03:20:30,112 INFO L332 chiAutomizerObserver]: Analyzing ICFG Fibonacci03.c [2023-11-29 03:20:30,168 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 03:20:30,168 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 03:20:30,169 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 03:20:30,169 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 03:20:30,169 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 03:20:30,169 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 03:20:30,169 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 03:20:30,169 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 03:20:30,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:20:30,195 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 03:20:30,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:20:30,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:20:30,201 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-29 03:20:30,202 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 03:20:30,202 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 03:20:30,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 03:20:30,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 03:20:30,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:20:30,205 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:20:30,205 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-29 03:20:30,205 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 03:20:30,213 INFO L748 eck$LassoCheckResult]: Stem: 18#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 8#L29true assume !(main_~x~0#1 > 46); 12#L32true call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 15#$Ultimate##0true [2023-11-29 03:20:30,213 INFO L750 eck$LassoCheckResult]: Loop: 15#$Ultimate##0true ~n := #in~n; 4#L17true assume !(~n < 1); 19#L19true assume !(1 == ~n); 17#L22true call #t~ret4 := fibonacci(~n - 1);< 15#$Ultimate##0true [2023-11-29 03:20:30,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1325878, now seen corresponding path program 1 times [2023-11-29 03:20:30,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:30,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174563329] [2023-11-29 03:20:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:30,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:30,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:20:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:30,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:20:30,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:30,348 INFO L85 PathProgramCache]: Analyzing trace with hash 927648, now seen corresponding path program 1 times [2023-11-29 03:20:30,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:30,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761404478] [2023-11-29 03:20:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:30,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:30,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:20:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:30,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:20:30,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash 410501205, now seen corresponding path program 1 times [2023-11-29 03:20:30,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:30,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720307892] [2023-11-29 03:20:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:30,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:30,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:20:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:30,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:20:30,495 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:20:30,495 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:20:30,495 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:20:30,496 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:20:30,496 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 03:20:30,496 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,496 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:20:30,496 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:20:30,496 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration1_Loop [2023-11-29 03:20:30,496 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:20:30,497 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:20:30,513 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 03:20:30,523 INFO 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 03:20:30,526 INFO 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 03:20:30,529 INFO 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 03:20:30,539 INFO 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 03:20:30,597 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:20:30,598 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 03:20:30,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:30,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:30,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 03:20:30,615 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:20:30,615 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:30,634 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:20:30,634 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 03:20:30,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:20:30,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:30,645 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:30,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 03:20:30,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:20:30,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:30,668 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:20:30,668 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 03:20:30,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 03:20:30,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:30,675 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:30,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 03:20:30,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:20:30,678 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:30,690 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:20:30,691 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 03:20:30,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 03:20:30,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:30,695 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:30,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 03:20:30,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:20:30,707 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:30,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 03:20:30,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:30,751 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:30,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 03:20:30,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 03:20:30,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:30,819 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 03:20:30,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-29 03:20:30,822 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:20:30,822 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:20:30,823 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:20:30,823 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:20:30,823 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 03:20:30,823 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,823 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:20:30,823 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:20:30,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration1_Loop [2023-11-29 03:20:30,824 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:20:30,824 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:20:30,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:20:30,829 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:20:30,832 INFO 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 03:20:30,839 INFO 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 03:20:30,848 INFO 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 03:20:30,898 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:20:30,903 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 03:20:30,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:30,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:30,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 03:20:30,912 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 03:20:30,925 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:30,925 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:30,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:30,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:30,926 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:30,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:30,928 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:30,934 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:20:30,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 03:20:30,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:30,939 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:30,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 03:20:30,942 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 03:20:30,954 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:30,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:30,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:30,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:30,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:30,956 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:30,956 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:30,958 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:20:30,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-29 03:20:30,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:30,964 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:30,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 03:20:30,967 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 03:20:30,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:30,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:30,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:30,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:30,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:30,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:30,983 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:30,987 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:20:30,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 03:20:30,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:30,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:30,992 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:30,995 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 03:20:30,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 03:20:31,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:31,005 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:31,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:31,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:31,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:31,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:31,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:31,015 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 03:20:31,019 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 03:20:31,020 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 03:20:31,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:31,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:31,022 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:31,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 03:20:31,028 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 03:20:31,028 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 03:20:31,028 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 03:20:31,029 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2023-11-29 03:20:31,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-29 03:20:31,036 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 03:20:31,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:20:31,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:20:31,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:31,151 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 03:20:31,179 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-29 03:20:31,181 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:20:31,281 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 64 transitions. Complement of second has 12 states. [2023-11-29 03:20:31,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 03:20:31,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:20:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-29 03:20:31,291 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 4 letters. [2023-11-29 03:20:31,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:31,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2023-11-29 03:20:31,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:31,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 4 letters. Loop has 8 letters. [2023-11-29 03:20:31,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:31,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 64 transitions. [2023-11-29 03:20:31,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 03:20:31,305 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 26 states and 35 transitions. [2023-11-29 03:20:31,307 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2023-11-29 03:20:31,307 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2023-11-29 03:20:31,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 35 transitions. [2023-11-29 03:20:31,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:20:31,308 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-11-29 03:20:31,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 35 transitions. [2023-11-29 03:20:31,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-29 03:20:31,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2023-11-29 03:20:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 03:20:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-11-29 03:20:31,342 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-29 03:20:31,342 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-29 03:20:31,343 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 03:20:31,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 27 transitions. [2023-11-29 03:20:31,344 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 03:20:31,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:20:31,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:20:31,345 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:20:31,345 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:20:31,345 INFO L748 eck$LassoCheckResult]: Stem: 141#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 142#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 143#L29 assume !(main_~x~0#1 > 46); 130#L32 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 146#$Ultimate##0 ~n := #in~n; 137#L17 assume !(~n < 1); 138#L19 assume !(1 == ~n); 131#L22 call #t~ret4 := fibonacci(~n - 1);< 139#$Ultimate##0 ~n := #in~n; 134#L17 assume ~n < 1;#res := 0; 135#fibonacciFINAL assume true; 140#fibonacciEXIT >#36#return; 129#L22-1 [2023-11-29 03:20:31,345 INFO L750 eck$LassoCheckResult]: Loop: 129#L22-1 call #t~ret5 := fibonacci(~n - 2);< 133#$Ultimate##0 ~n := #in~n; 149#L17 assume !(~n < 1); 148#L19 assume !(1 == ~n); 132#L22 call #t~ret4 := fibonacci(~n - 1);< 133#$Ultimate##0 ~n := #in~n; 149#L17 assume ~n < 1;#res := 0; 145#fibonacciFINAL assume true; 147#fibonacciEXIT >#36#return; 129#L22-1 [2023-11-29 03:20:31,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:31,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1689937232, now seen corresponding path program 1 times [2023-11-29 03:20:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980891504] [2023-11-29 03:20:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:31,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:20:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,483 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 03:20:31,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:20:31,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980891504] [2023-11-29 03:20:31,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980891504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:20:31,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:20:31,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:20:31,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108565127] [2023-11-29 03:20:31,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:20:31,488 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 03:20:31,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:31,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1163555262, now seen corresponding path program 1 times [2023-11-29 03:20:31,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:31,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212204567] [2023-11-29 03:20:31,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:31,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 03:20:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,562 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 03:20:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:20:31,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212204567] [2023-11-29 03:20:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212204567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:20:31,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:20:31,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 03:20:31,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383135170] [2023-11-29 03:20:31,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:20:31,563 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 03:20:31,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:20:31,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:20:31,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:20:31,567 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 03:20:31,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:20:31,635 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-11-29 03:20:31,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2023-11-29 03:20:31,637 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 03:20:31,639 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2023-11-29 03:20:31,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2023-11-29 03:20:31,639 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2023-11-29 03:20:31,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2023-11-29 03:20:31,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:20:31,640 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-29 03:20:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2023-11-29 03:20:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-29 03:20:31,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 03:20:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-11-29 03:20:31,644 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-29 03:20:31,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:20:31,646 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-29 03:20:31,646 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 03:20:31,646 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 31 transitions. [2023-11-29 03:20:31,647 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 03:20:31,647 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:20:31,647 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:20:31,648 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:20:31,648 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:20:31,649 INFO L748 eck$LassoCheckResult]: Stem: 216#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 217#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 218#L29 assume !(main_~x~0#1 > 46); 205#L32 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 220#$Ultimate##0 ~n := #in~n; 211#L17 assume !(~n < 1); 212#L19 assume !(1 == ~n); 206#L22 call #t~ret4 := fibonacci(~n - 1);< 213#$Ultimate##0 ~n := #in~n; 209#L17 assume !(~n < 1); 210#L19 assume 1 == ~n;#res := 1; 221#fibonacciFINAL assume true; 225#fibonacciEXIT >#36#return; 204#L22-1 [2023-11-29 03:20:31,649 INFO L750 eck$LassoCheckResult]: Loop: 204#L22-1 call #t~ret5 := fibonacci(~n - 2);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume !(~n < 1); 226#L19 assume !(1 == ~n); 207#L22 call #t~ret4 := fibonacci(~n - 1);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume !(~n < 1); 226#L19 assume !(1 == ~n); 207#L22 call #t~ret4 := fibonacci(~n - 1);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume !(~n < 1); 226#L19 assume 1 == ~n;#res := 1; 222#fibonacciFINAL assume true; 223#fibonacciEXIT >#36#return; 204#L22-1 call #t~ret5 := fibonacci(~n - 2);< 208#$Ultimate##0 ~n := #in~n; 227#L17 assume ~n < 1;#res := 0; 228#fibonacciFINAL assume true; 214#fibonacciEXIT >#38#return; 215#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 219#fibonacciFINAL assume true; 224#fibonacciEXIT >#36#return; 204#L22-1 [2023-11-29 03:20:31,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash -848422362, now seen corresponding path program 1 times [2023-11-29 03:20:31,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:31,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177814380] [2023-11-29 03:20:31,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:31,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:31,658 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:20:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:31,666 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:20:31,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1698967994, now seen corresponding path program 1 times [2023-11-29 03:20:31,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:31,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133065889] [2023-11-29 03:20:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:31,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:31,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:20:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:31,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:20:31,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:31,687 INFO L85 PathProgramCache]: Analyzing trace with hash 250475039, now seen corresponding path program 1 times [2023-11-29 03:20:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:31,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492455756] [2023-11-29 03:20:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:31,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:20:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-29 03:20:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:20:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:20:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 03:20:31,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:20:31,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492455756] [2023-11-29 03:20:31,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492455756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:20:31,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781901212] [2023-11-29 03:20:31,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:31,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:20:31,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:31,815 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:20:31,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:20:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:31,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:20:31,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 03:20:31,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:20:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-29 03:20:32,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781901212] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:20:32,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:20:32,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-11-29 03:20:32,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935425268] [2023-11-29 03:20:32,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:20:32,348 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:20:32,348 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:20:32,349 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:20:32,349 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:20:32,349 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 03:20:32,349 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:32,349 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:20:32,349 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:20:32,349 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration3_Loop [2023-11-29 03:20:32,349 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:20:32,349 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:20:32,351 INFO 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 03:20:32,378 INFO 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 03:20:32,380 INFO 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 03:20:32,383 INFO 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 03:20:32,439 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:20:32,439 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 03:20:32,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:32,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:32,440 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:32,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-29 03:20:32,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:20:32,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:32,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-11-29 03:20:32,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:32,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:32,464 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:32,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-29 03:20:32,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 03:20:32,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:32,768 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 03:20:32,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-29 03:20:32,772 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:20:32,772 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:20:32,772 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:20:32,772 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:20:32,772 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 03:20:32,772 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:32,772 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:20:32,772 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:20:32,772 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration3_Loop [2023-11-29 03:20:32,773 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:20:32,773 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:20:32,774 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 03:20:32,776 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 03:20:32,777 INFO 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 03:20:32,780 INFO 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 03:20:32,830 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:20:32,830 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 03:20:32,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:32,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:32,831 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:32,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-29 03:20:32,833 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 03:20:32,843 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:32,843 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:32,843 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:32,843 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:32,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:32,844 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:32,844 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:32,845 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:20:32,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-11-29 03:20:32,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:32,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:32,849 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:32,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-29 03:20:32,851 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 03:20:32,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:32,861 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:32,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:32,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:32,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:32,862 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:32,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:32,863 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:20:32,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-11-29 03:20:32,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:32,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:32,867 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-29 03:20:32,869 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 03:20:32,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:32,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:32,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:32,880 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:32,880 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:32,880 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:32,881 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:32,882 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:20:32,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-29 03:20:32,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:32,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:32,886 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:32,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-29 03:20:32,888 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 03:20:32,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:32,899 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:32,899 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:32,899 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:32,899 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:32,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:32,900 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:32,903 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 03:20:32,907 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 03:20:32,907 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 03:20:32,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:32,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:32,914 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:32,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-29 03:20:32,916 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 03:20:32,917 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 03:20:32,917 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 03:20:32,917 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2023-11-29 03:20:32,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-11-29 03:20:32,920 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 03:20:32,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:32,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:20:32,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:33,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:20:33,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:20:33,215 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-29 03:20:33,216 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8 Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 03:20:33,461 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 31 transitions. cyclomatic complexity: 8. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Result 160 states and 216 transitions. Complement of second has 48 states. [2023-11-29 03:20:33,462 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 03:20:33,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 03:20:33,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 42 transitions. [2023-11-29 03:20:33,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 22 letters. [2023-11-29 03:20:33,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:33,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 35 letters. Loop has 22 letters. [2023-11-29 03:20:33,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:33,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 42 transitions. Stem has 13 letters. Loop has 44 letters. [2023-11-29 03:20:33,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:33,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 216 transitions. [2023-11-29 03:20:33,476 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-11-29 03:20:33,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 129 states and 181 transitions. [2023-11-29 03:20:33,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2023-11-29 03:20:33,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2023-11-29 03:20:33,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 129 states and 181 transitions. [2023-11-29 03:20:33,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:20:33,483 INFO L218 hiAutomatonCegarLoop]: Abstraction has 129 states and 181 transitions. [2023-11-29 03:20:33,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states and 181 transitions. [2023-11-29 03:20:33,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2023-11-29 03:20:33,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 71 states have internal predecessors, (82), 25 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (33), 22 states have call predecessors, (33), 23 states have call successors, (33) [2023-11-29 03:20:33,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 141 transitions. [2023-11-29 03:20:33,499 INFO L240 hiAutomatonCegarLoop]: Abstraction has 107 states and 141 transitions. [2023-11-29 03:20:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:20:33,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 03:20:33,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-29 03:20:33,500 INFO L87 Difference]: Start difference. First operand 107 states and 141 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-29 03:20:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:20:33,567 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2023-11-29 03:20:33,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 58 transitions. [2023-11-29 03:20:33,569 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 03:20:33,571 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 54 transitions. [2023-11-29 03:20:33,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2023-11-29 03:20:33,571 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2023-11-29 03:20:33,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 54 transitions. [2023-11-29 03:20:33,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:20:33,572 INFO L218 hiAutomatonCegarLoop]: Abstraction has 42 states and 54 transitions. [2023-11-29 03:20:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 54 transitions. [2023-11-29 03:20:33,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2023-11-29 03:20:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-29 03:20:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2023-11-29 03:20:33,576 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-11-29 03:20:33,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 03:20:33,577 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2023-11-29 03:20:33,578 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 03:20:33,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2023-11-29 03:20:33,579 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 03:20:33,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:20:33,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:20:33,581 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:20:33,581 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 03:20:33,582 INFO L748 eck$LassoCheckResult]: Stem: 989#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 990#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 991#L29 assume !(main_~x~0#1 > 46); 981#L32 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 994#$Ultimate##0 ~n := #in~n; 985#L17 assume !(~n < 1); 986#L19 assume !(1 == ~n); 980#L22 call #t~ret4 := fibonacci(~n - 1);< 982#$Ultimate##0 ~n := #in~n; 999#L17 assume !(~n < 1); 1012#L19 assume !(1 == ~n); 992#L22 call #t~ret4 := fibonacci(~n - 1);< 982#$Ultimate##0 ~n := #in~n; 998#L17 assume !(~n < 1); 995#L19 assume 1 == ~n;#res := 1; 996#fibonacciFINAL assume true; 1010#fibonacciEXIT >#36#return; 1007#L22-1 call #t~ret5 := fibonacci(~n - 2);< 1008#$Ultimate##0 ~n := #in~n; 1011#L17 assume ~n < 1;#res := 0; 1009#fibonacciFINAL assume true; 1006#fibonacciEXIT >#38#return; 1005#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1004#fibonacciFINAL assume true; 1003#fibonacciEXIT >#36#return; 977#L22-1 [2023-11-29 03:20:33,582 INFO L750 eck$LassoCheckResult]: Loop: 977#L22-1 call #t~ret5 := fibonacci(~n - 2);< 979#$Ultimate##0 ~n := #in~n; 1002#L17 assume !(~n < 1); 1000#L19 assume !(1 == ~n); 976#L22 call #t~ret4 := fibonacci(~n - 1);< 979#$Ultimate##0 ~n := #in~n; 1002#L17 assume !(~n < 1); 1000#L19 assume !(1 == ~n); 976#L22 call #t~ret4 := fibonacci(~n - 1);< 979#$Ultimate##0 ~n := #in~n; 1002#L17 assume !(~n < 1); 1000#L19 assume 1 == ~n;#res := 1; 1001#fibonacciFINAL assume true; 1013#fibonacciEXIT >#36#return; 975#L22-1 call #t~ret5 := fibonacci(~n - 2);< 978#$Ultimate##0 ~n := #in~n; 983#L17 assume ~n < 1;#res := 0; 984#fibonacciFINAL assume true; 987#fibonacciEXIT >#38#return; 988#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 993#fibonacciFINAL assume true; 997#fibonacciEXIT >#36#return; 977#L22-1 [2023-11-29 03:20:33,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:33,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1885512200, now seen corresponding path program 2 times [2023-11-29 03:20:33,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:33,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184315820] [2023-11-29 03:20:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:33,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:33,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:20:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:33,602 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:20:33,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1698967994, now seen corresponding path program 2 times [2023-11-29 03:20:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:33,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969887384] [2023-11-29 03:20:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:33,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:33,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:20:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:33,617 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:20:33,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:33,617 INFO L85 PathProgramCache]: Analyzing trace with hash -360938367, now seen corresponding path program 3 times [2023-11-29 03:20:33,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:33,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629855843] [2023-11-29 03:20:33,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:33,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:33,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-29 03:20:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:20:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:20:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:20:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:33,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-29 03:20:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:33,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:20:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:33,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:20:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-29 03:20:33,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:20:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629855843] [2023-11-29 03:20:33,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629855843] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:20:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945673894] [2023-11-29 03:20:33,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:20:33,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:20:33,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:33,801 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:20:33,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:20:33,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-29 03:20:33,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:20:33,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:20:33,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 03:20:33,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:20:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 49 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 03:20:34,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945673894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:20:34,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:20:34,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 21 [2023-11-29 03:20:34,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122063101] [2023-11-29 03:20:34,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:20:34,613 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:20:34,613 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:20:34,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:20:34,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:20:34,613 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 03:20:34,613 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:34,613 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:20:34,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:20:34,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration4_Loop [2023-11-29 03:20:34,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:20:34,614 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:20:34,615 INFO 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 03:20:34,629 INFO 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 03:20:34,631 INFO 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 03:20:34,633 INFO 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 03:20:34,691 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:20:34,691 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 03:20:34,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:34,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:34,692 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:34,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-29 03:20:34,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:20:34,699 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:34,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-11-29 03:20:34,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:34,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:34,721 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:34,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-29 03:20:34,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 03:20:34,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:35,019 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 03:20:35,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-11-29 03:20:35,023 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:20:35,023 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:20:35,023 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:20:35,023 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:20:35,023 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 03:20:35,023 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:35,023 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:20:35,023 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:20:35,024 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration4_Loop [2023-11-29 03:20:35,024 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:20:35,024 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:20:35,024 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 03:20:35,035 INFO 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 03:20:35,037 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:20:35,039 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:20:35,097 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:20:35,097 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 03:20:35,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:35,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:35,098 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:35,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-29 03:20:35,101 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 03:20:35,113 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:35,113 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:35,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:35,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:35,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:35,114 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:35,115 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:35,117 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 03:20:35,120 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 03:20:35,121 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 03:20:35,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:35,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:35,122 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:35,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-29 03:20:35,124 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 03:20:35,124 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 03:20:35,124 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 03:20:35,124 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2023-11-29 03:20:35,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-29 03:20:35,128 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 03:20:35,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:35,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:20:35,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:35,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:20:35,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:20:35,515 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-29 03:20:35,515 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 03:20:35,613 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2023-11-29 03:20:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-29 03:20:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 03:20:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2023-11-29 03:20:35,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2023-11-29 03:20:35,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:35,616 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:20:35,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:35,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:20:35,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:35,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-29 03:20:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:35,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:20:35,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:35,991 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:20:35,991 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-29 03:20:35,992 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 03:20:36,084 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 46 states and 55 transitions. Complement of second has 11 states. [2023-11-29 03:20:36,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-29 03:20:36,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 03:20:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2023-11-29 03:20:36,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 25 letters. Loop has 22 letters. [2023-11-29 03:20:36,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:36,088 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:20:36,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:36,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 03:20:36,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:36,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:20:36,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:36,431 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 03:20:36,432 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-29 03:20:36,432 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 03:20:36,729 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 345 states and 444 transitions. Complement of second has 125 states. [2023-11-29 03:20:36,730 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 03:20:36,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 03:20:36,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 47 transitions. [2023-11-29 03:20:36,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 22 letters. [2023-11-29 03:20:36,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:36,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 47 letters. Loop has 22 letters. [2023-11-29 03:20:36,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:36,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 47 transitions. Stem has 25 letters. Loop has 44 letters. [2023-11-29 03:20:36,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:36,739 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 345 states and 444 transitions. [2023-11-29 03:20:36,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-29 03:20:36,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 345 states to 220 states and 297 transitions. [2023-11-29 03:20:36,754 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 99 [2023-11-29 03:20:36,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2023-11-29 03:20:36,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 297 transitions. [2023-11-29 03:20:36,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:20:36,756 INFO L218 hiAutomatonCegarLoop]: Abstraction has 220 states and 297 transitions. [2023-11-29 03:20:36,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 297 transitions. [2023-11-29 03:20:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 172. [2023-11-29 03:20:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 112 states have internal predecessors, (122), 38 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (59), 36 states have call predecessors, (59), 36 states have call successors, (59) [2023-11-29 03:20:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 223 transitions. [2023-11-29 03:20:36,776 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 223 transitions. [2023-11-29 03:20:36,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:20:36,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:20:36,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:20:36,778 INFO L87 Difference]: Start difference. First operand 172 states and 223 transitions. Second operand has 21 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 13 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-29 03:20:37,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:20:37,025 INFO L93 Difference]: Finished difference Result 349 states and 503 transitions. [2023-11-29 03:20:37,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 349 states and 503 transitions. [2023-11-29 03:20:37,032 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-29 03:20:37,041 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 349 states to 339 states and 490 transitions. [2023-11-29 03:20:37,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 173 [2023-11-29 03:20:37,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2023-11-29 03:20:37,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 339 states and 490 transitions. [2023-11-29 03:20:37,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:20:37,043 INFO L218 hiAutomatonCegarLoop]: Abstraction has 339 states and 490 transitions. [2023-11-29 03:20:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states and 490 transitions. [2023-11-29 03:20:37,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 274. [2023-11-29 03:20:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 171 states have (on average 1.128654970760234) internal successors, (193), 174 states have internal predecessors, (193), 60 states have call successors, (72), 36 states have call predecessors, (72), 43 states have return successors, (136), 63 states have call predecessors, (136), 58 states have call successors, (136) [2023-11-29 03:20:37,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 401 transitions. [2023-11-29 03:20:37,068 INFO L240 hiAutomatonCegarLoop]: Abstraction has 274 states and 401 transitions. [2023-11-29 03:20:37,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 03:20:37,069 INFO L428 stractBuchiCegarLoop]: Abstraction has 274 states and 401 transitions. [2023-11-29 03:20:37,069 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 03:20:37,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 274 states and 401 transitions. [2023-11-29 03:20:37,072 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-29 03:20:37,073 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 03:20:37,073 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 03:20:37,075 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 9, 7, 7, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2023-11-29 03:20:37,075 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 03:20:37,075 INFO L748 eck$LassoCheckResult]: Stem: 2992#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 2993#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;havoc main_#t~nondet6#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 2994#L29 assume !(main_~x~0#1 > 46); 2995#L32 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 2999#$Ultimate##0 ~n := #in~n; 3035#L17 assume !(~n < 1); 3033#L19 assume !(1 == ~n); 3025#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3034#L17 assume !(~n < 1); 3032#L19 assume !(1 == ~n); 3026#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3034#L17 assume !(~n < 1); 3032#L19 assume !(1 == ~n); 3026#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3034#L17 assume !(~n < 1); 3032#L19 assume !(1 == ~n); 3026#L22 call #t~ret4 := fibonacci(~n - 1);< 3028#$Ultimate##0 ~n := #in~n; 3036#L17 assume !(~n < 1); 3135#L19 assume 1 == ~n;#res := 1; 3134#fibonacciFINAL assume true; 3131#fibonacciEXIT >#36#return; 3126#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3128#$Ultimate##0 ~n := #in~n; 3132#L17 assume ~n < 1;#res := 0; 3129#fibonacciFINAL assume true; 3125#fibonacciEXIT >#38#return; 3123#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3122#fibonacciFINAL assume true; 3121#fibonacciEXIT >#36#return; 3065#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3067#$Ultimate##0 ~n := #in~n; 3118#L17 assume !(~n < 1); 3114#L19 assume 1 == ~n;#res := 1; 3013#fibonacciFINAL assume true; 3064#fibonacciEXIT >#38#return; 3060#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3052#fibonacciFINAL assume true; 3041#fibonacciEXIT >#36#return; 3040#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3043#$Ultimate##0 ~n := #in~n; 3119#L17 assume !(~n < 1); 3115#L19 assume !(1 == ~n); 3116#L22 call #t~ret4 := fibonacci(~n - 1);< 3236#$Ultimate##0 ~n := #in~n; 3170#L17 assume !(~n < 1); 3171#L19 assume 1 == ~n;#res := 1; 3237#fibonacciFINAL assume true; 3234#fibonacciEXIT >#36#return; 3056#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3059#$Ultimate##0 ~n := #in~n; 3124#L17 assume ~n < 1;#res := 0; 3069#fibonacciFINAL assume true; 3055#fibonacciEXIT >#38#return; 3058#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3051#fibonacciFINAL assume true; 3039#fibonacciEXIT >#38#return; 3027#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3030#fibonacciFINAL assume true; 3024#fibonacciEXIT >#36#return; 3012#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3020#$Ultimate##0 ~n := #in~n; 3016#L17 assume !(~n < 1); 3010#L19 assume !(1 == ~n); 3015#L22 call #t~ret4 := fibonacci(~n - 1);< 3235#$Ultimate##0 ~n := #in~n; 3211#L17 assume !(~n < 1); 3212#L19 assume !(1 == ~n); 3194#L22 call #t~ret4 := fibonacci(~n - 1);< 3197#$Ultimate##0 [2023-11-29 03:20:37,075 INFO L750 eck$LassoCheckResult]: Loop: 3197#$Ultimate##0 ~n := #in~n; 3209#L17 assume !(~n < 1); 3207#L19 assume !(1 == ~n); 3192#L22 call #t~ret4 := fibonacci(~n - 1);< 3197#$Ultimate##0 [2023-11-29 03:20:37,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1406603621, now seen corresponding path program 4 times [2023-11-29 03:20:37,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:37,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477994747] [2023-11-29 03:20:37,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:37,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:37,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:20:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:37,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:20:37,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:37,109 INFO L85 PathProgramCache]: Analyzing trace with hash 927648, now seen corresponding path program 2 times [2023-11-29 03:20:37,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:37,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137757337] [2023-11-29 03:20:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:37,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:37,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 03:20:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 03:20:37,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 03:20:37,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2055878970, now seen corresponding path program 5 times [2023-11-29 03:20:37,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:20:37,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934725191] [2023-11-29 03:20:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:20:37,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:20:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 03:20:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:20:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:20:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:20:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:20:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 03:20:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 03:20:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 03:20:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 03:20:37,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 110 proven. 115 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-29 03:20:37,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:20:37,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934725191] [2023-11-29 03:20:37,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934725191] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:20:37,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035230505] [2023-11-29 03:20:37,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:20:37,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:20:37,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:37,508 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:20:37,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 03:20:37,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-29 03:20:37,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:20:37,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:20:37,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 115 proven. 109 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-29 03:20:37,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:20:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 115 proven. 121 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-29 03:20:38,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035230505] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:20:38,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:20:38,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 16] total 21 [2023-11-29 03:20:38,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822573521] [2023-11-29 03:20:38,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:20:38,132 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:20:38,132 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:20:38,132 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:20:38,132 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:20:38,132 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 03:20:38,132 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,132 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:20:38,132 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:20:38,132 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration5_Loop [2023-11-29 03:20:38,132 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:20:38,132 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:20:38,133 INFO 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 03:20:38,144 INFO 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 03:20:38,145 INFO 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 03:20:38,151 INFO 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 03:20:38,153 INFO 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 03:20:38,179 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:20:38,179 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 03:20:38,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:38,180 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:38,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-29 03:20:38,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:20:38,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:38,194 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:20:38,194 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=0} Honda state: {fibonacci_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 03:20:38,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-11-29 03:20:38,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:38,198 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:38,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-29 03:20:38,200 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:20:38,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:38,212 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 03:20:38,212 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 03:20:38,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-29 03:20:38,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:38,215 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:38,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-29 03:20:38,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 03:20:38,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:38,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-29 03:20:38,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:38,232 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:38,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-29 03:20:38,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 03:20:38,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 03:20:38,253 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 03:20:38,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-29 03:20:38,256 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 03:20:38,256 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 03:20:38,256 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 03:20:38,256 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 03:20:38,257 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 03:20:38,257 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,257 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 03:20:38,257 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 03:20:38,257 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci03.c_Iteration5_Loop [2023-11-29 03:20:38,257 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 03:20:38,257 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 03:20:38,258 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:20:38,260 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 03:20:38,261 INFO 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 03:20:38,267 INFO 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 03:20:38,269 INFO 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 03:20:38,292 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 03:20:38,292 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 03:20:38,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:38,293 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:38,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-29 03:20:38,296 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 03:20:38,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:38,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:38,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:38,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:38,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:38,306 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:38,306 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:38,308 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:20:38,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-29 03:20:38,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:38,311 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:38,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-29 03:20:38,314 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 03:20:38,326 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:38,326 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:38,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:38,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:38,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:38,327 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:38,327 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:38,328 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 03:20:38,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-29 03:20:38,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:38,338 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:38,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-29 03:20:38,342 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 03:20:38,353 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 03:20:38,353 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 03:20:38,353 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 03:20:38,353 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 03:20:38,353 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 03:20:38,354 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 03:20:38,354 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 03:20:38,356 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 03:20:38,358 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 03:20:38,359 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 03:20:38,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 03:20:38,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:20:38,366 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 03:20:38,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-29 03:20:38,367 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 03:20:38,367 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 03:20:38,368 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 03:20:38,368 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2023-11-29 03:20:38,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2023-11-29 03:20:38,371 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 03:20:38,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:38,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:20:38,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:38,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2023-11-29 03:20:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:38,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:20:38,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:38,957 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 03:20:38,958 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-29 03:20:38,958 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:20:39,023 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 296 states and 427 transitions. Complement of second has 13 states. [2023-11-29 03:20:39,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 03:20:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:20:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2023-11-29 03:20:39,025 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 72 letters. Loop has 4 letters. [2023-11-29 03:20:39,026 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:39,026 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:20:39,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:39,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:20:39,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:39,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:20:39,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:39,627 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 03:20:39,628 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-29 03:20:39,628 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:20:39,671 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 296 states and 427 transitions. Complement of second has 13 states. [2023-11-29 03:20:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 03:20:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:20:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2023-11-29 03:20:39,673 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 72 letters. Loop has 4 letters. [2023-11-29 03:20:39,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:39,673 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 03:20:39,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:20:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:39,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:20:39,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:20:40,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:20:40,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:20:40,204 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 03:20:40,205 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2023-11-29 03:20:40,205 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:20:40,281 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 274 states and 401 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 349 states and 484 transitions. Complement of second has 14 states. [2023-11-29 03:20:40,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 03:20:40,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 03:20:40,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2023-11-29 03:20:40,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 72 letters. Loop has 4 letters. [2023-11-29 03:20:40,283 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:40,283 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 76 letters. Loop has 4 letters. [2023-11-29 03:20:40,284 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:40,284 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 72 letters. Loop has 8 letters. [2023-11-29 03:20:40,285 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 03:20:40,285 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 349 states and 484 transitions. [2023-11-29 03:20:40,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-29 03:20:40,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 349 states to 288 states and 417 transitions. [2023-11-29 03:20:40,295 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 138 [2023-11-29 03:20:40,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2023-11-29 03:20:40,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 288 states and 417 transitions. [2023-11-29 03:20:40,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 03:20:40,296 INFO L218 hiAutomatonCegarLoop]: Abstraction has 288 states and 417 transitions. [2023-11-29 03:20:40,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states and 417 transitions. [2023-11-29 03:20:40,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 280. [2023-11-29 03:20:40,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 176 states have (on average 1.125) internal successors, (198), 179 states have internal predecessors, (198), 61 states have call successors, (73), 37 states have call predecessors, (73), 43 states have return successors, (138), 63 states have call predecessors, (138), 59 states have call successors, (138) [2023-11-29 03:20:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 409 transitions. [2023-11-29 03:20:40,313 INFO L240 hiAutomatonCegarLoop]: Abstraction has 280 states and 409 transitions. [2023-11-29 03:20:40,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:20:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:20:40,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:20:40,314 INFO L87 Difference]: Start difference. First operand 280 states and 409 transitions. Second operand has 21 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 15 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (19), 10 states have call predecessors, (19), 11 states have call successors, (19) [2023-11-29 03:20:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:20:40,495 INFO L93 Difference]: Finished difference Result 408 states and 601 transitions. [2023-11-29 03:20:40,495 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 408 states and 601 transitions. [2023-11-29 03:20:40,500 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 03:20:40,500 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 408 states to 0 states and 0 transitions. [2023-11-29 03:20:40,500 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 03:20:40,500 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 03:20:40,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 03:20:40,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:20:40,500 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:20:40,501 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:20:40,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 03:20:40,502 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 03:20:40,502 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-29 03:20:40,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-29 03:20:40,502 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 03:20:40,502 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-29 03:20:40,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 03:20:40 BoogieIcfgContainer [2023-11-29 03:20:40,509 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 03:20:40,509 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:20:40,509 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:20:40,509 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:20:40,510 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:20:30" (3/4) ... [2023-11-29 03:20:40,511 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 03:20:40,512 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:20:40,512 INFO L158 Benchmark]: Toolchain (without parser) took 10975.76ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 117.2MB in the beginning and 81.9MB in the end (delta: 35.3MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2023-11-29 03:20:40,512 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:20:40,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.78ms. Allocated memory is still 151.0MB. Free memory was 116.6MB in the beginning and 106.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 03:20:40,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.55ms. Allocated memory is still 151.0MB. Free memory was 106.7MB in the beginning and 105.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:20:40,514 INFO L158 Benchmark]: Boogie Preprocessor took 32.09ms. Allocated memory is still 151.0MB. Free memory was 105.5MB in the beginning and 104.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:20:40,514 INFO L158 Benchmark]: RCFGBuilder took 280.68ms. Allocated memory is still 151.0MB. Free memory was 104.0MB in the beginning and 118.4MB in the end (delta: -14.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 03:20:40,514 INFO L158 Benchmark]: BuchiAutomizer took 10403.77ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 118.4MB in the beginning and 81.9MB in the end (delta: 36.5MB). Peak memory consumption was 70.0MB. Max. memory is 16.1GB. [2023-11-29 03:20:40,515 INFO L158 Benchmark]: Witness Printer took 2.81ms. Allocated memory is still 182.5MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:20:40,516 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.78ms. Allocated memory is still 151.0MB. Free memory was 116.6MB in the beginning and 106.7MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.55ms. Allocated memory is still 151.0MB. Free memory was 106.7MB in the beginning and 105.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.09ms. Allocated memory is still 151.0MB. Free memory was 105.5MB in the beginning and 104.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 280.68ms. Allocated memory is still 151.0MB. Free memory was 104.0MB in the beginning and 118.4MB in the end (delta: -14.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 10403.77ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 118.4MB in the beginning and 81.9MB in the end (delta: 36.5MB). Peak memory consumption was 70.0MB. Max. memory is 16.1GB. * Witness Printer took 2.81ms. Allocated memory is still 182.5MB. Free memory is still 81.9MB. 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 8 terminating modules (4 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 21 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.3s and 6 iterations. TraceHistogramMax:12. Analysis of lassos took 5.1s. Construction of modules took 0.5s. Büchi inclusion checks took 4.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 151 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 16/46 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 450 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 423 mSDsluCounter, 403 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 242 mSDsCounter, 311 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 653 IncrementalHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 311 mSolverCounterUnsat, 161 mSDtfsCounter, 653 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp94 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq173 hnf95 smp62 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s 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 03:20:40,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 03:20:40,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 03:20:40,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:20:41,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b50e0ad-7e96-488f-9854-ae7f5a7946fa/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