./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --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 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:42:17,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:42:17,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:42:17,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:42:17,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:42:17,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:42:17,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:42:17,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:42:17,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:42:17,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:42:17,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:42:17,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:42:17,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:42:17,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:42:17,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:42:17,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:42:17,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:42:17,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:42:17,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:42:17,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:42:17,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:42:17,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:42:17,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:42:17,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:42:17,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:42:17,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:42:17,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:42:17,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:42:17,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:42:17,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:42:17,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:42:17,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:42:17,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:42:17,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:42:17,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:42:17,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:42:17,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:42:17,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:42:17,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:42:17,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:42:17,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:42:17,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-20 06:42:18,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:42:18,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:42:18,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:42:18,026 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:42:18,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:42:18,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:42:18,027 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:42:18,028 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:42:18,028 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:42:18,028 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:42:18,028 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:42:18,029 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:42:18,029 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:42:18,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:42:18,029 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:42:18,029 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:42:18,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:42:18,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:42:18,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:42:18,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:42:18,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:42:18,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:42:18,031 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:42:18,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:42:18,031 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:42:18,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:42:18,032 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:42:18,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:42:18,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:42:18,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:42:18,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:42:18,033 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:42:18,034 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:42:18,034 INFO L138 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_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2021-11-20 06:42:18,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:42:18,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:42:18,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:42:18,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:42:18,404 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:42:18,405 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2021-11-20 06:42:18,487 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/data/1f94d6a1f/f18554cd77704e44bc8f4a386e9d7619/FLAG020f68e1b [2021-11-20 06:42:18,994 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:42:18,995 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2021-11-20 06:42:19,007 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/data/1f94d6a1f/f18554cd77704e44bc8f4a386e9d7619/FLAG020f68e1b [2021-11-20 06:42:19,362 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/data/1f94d6a1f/f18554cd77704e44bc8f4a386e9d7619 [2021-11-20 06:42:19,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:42:19,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:42:19,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:42:19,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:42:19,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:42:19,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5a5802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19, skipping insertion in model container [2021-11-20 06:42:19,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:42:19,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:42:19,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2021-11-20 06:42:19,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:42:19,614 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:42:19,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2021-11-20 06:42:19,639 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:42:19,652 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:42:19,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19 WrapperNode [2021-11-20 06:42:19,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:42:19,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:42:19,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:42:19,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:42:19,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,687 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-11-20 06:42:19,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:42:19,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:42:19,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:42:19,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:42:19,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:42:19,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:42:19,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:42:19,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:42:19,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (1/1) ... [2021-11-20 06:42:19,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:19,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:19,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:19,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:42:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:42:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:42:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-11-20 06:42:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-11-20 06:42:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-11-20 06:42:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-11-20 06:42:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:42:19,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:42:19,867 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:42:19,869 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:42:20,001 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:42:20,008 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:42:20,008 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:42:20,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:42:20 BoogieIcfgContainer [2021-11-20 06:42:20,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:42:20,011 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:42:20,011 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:42:20,013 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:42:20,017 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:42:20,017 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:42:19" (1/3) ... [2021-11-20 06:42:20,018 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a1d83d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:42:20, skipping insertion in model container [2021-11-20 06:42:20,018 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:42:20,018 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:42:19" (2/3) ... [2021-11-20 06:42:20,019 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5a1d83d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:42:20, skipping insertion in model container [2021-11-20 06:42:20,019 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:42:20,019 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:42:20" (3/3) ... [2021-11-20 06:42:20,020 INFO L388 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-2.c [2021-11-20 06:42:20,067 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:42:20,067 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:42:20,067 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:42:20,067 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:42:20,067 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:42:20,068 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:42:20,068 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:42:20,068 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:42:20,087 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:42:20,140 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-20 06:42:20,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:20,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:20,148 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-20 06:42:20,148 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:20,148 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:42:20,149 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 06:42:20,154 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-20 06:42:20,154 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:20,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:20,155 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-20 06:42:20,155 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:20,162 INFO L791 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 15#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5#fibo1ENTRYtrue [2021-11-20 06:42:20,163 INFO L793 eck$LassoCheckResult]: Loop: 5#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 10#L15true call #t~ret4 := fibo2(~n - 1);< 14#fibo2ENTRYtrue ~n := #in~n; 12#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 23#L25true call #t~ret6 := fibo1(~n - 1);< 5#fibo1ENTRYtrue [2021-11-20 06:42:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:20,169 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-11-20 06:42:20,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:20,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064965404] [2021-11-20 06:42:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:20,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:20,274 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:20,323 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:42:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:20,331 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-11-20 06:42:20,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:20,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669431594] [2021-11-20 06:42:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:20,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:20,363 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:20,383 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:42:20,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:20,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-11-20 06:42:20,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:20,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233655161] [2021-11-20 06:42:20,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:20,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:20,409 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:20,426 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:42:20,637 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:20,638 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:20,638 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:20,639 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:20,639 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:42:20,639 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:20,639 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:20,639 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:20,640 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2021-11-20 06:42:20,640 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:20,640 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:20,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:20,748 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:20,749 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:42:20,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:20,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:20,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:20,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 06:42:20,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:20,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:20,783 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:20,783 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:20,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:20,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:20,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:20,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:20,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:20,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:20,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 06:42:20,858 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:20,859 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:20,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:20,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:20,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:20,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:20,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:20,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:20,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 06:42:20,926 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:20,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:20,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:20,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:20,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:20,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:20,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:20,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:20,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 06:42:20,990 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:20,991 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:21,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,029 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:21,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:21,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 06:42:21,058 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:21,059 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:21,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,097 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:21,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:21,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 06:42:21,126 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:21,127 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:21,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:21,187 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:21,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-20 06:42:21,210 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:21,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:21,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-11-20 06:42:21,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-20 06:42:21,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:21,246 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:21,266 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:21,266 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:21,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,294 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-20 06:42:21,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:21,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:21,323 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:21,324 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:21,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-20 06:42:21,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:21,366 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:21,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,404 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-20 06:42:21,406 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:42:21,406 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:21,493 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:42:21,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,499 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:21,499 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:21,499 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:21,499 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:21,499 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:42:21,499 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,499 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:21,499 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:21,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2021-11-20 06:42:21,500 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:21,500 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:21,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:21,594 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:21,599 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:42:21,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,602 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-20 06:42:21,604 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 [2021-11-20 06:42:21,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:21,620 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:21,620 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:21,620 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:21,620 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:21,623 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:21,623 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:21,633 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:21,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,671 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,678 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:42:21,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:21,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:21,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:21,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:21,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:21,692 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:21,692 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:21,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-20 06:42:21,710 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:21,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,746 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-20 06:42:21,751 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 [2021-11-20 06:42:21,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:21,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:21,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:21,763 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:21,763 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:21,766 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:21,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:21,769 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:21,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,793 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,803 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:42:21,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-20 06:42:21,811 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:21,811 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:21,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:21,811 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:21,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:21,813 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:21,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:21,829 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:21,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,868 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,879 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 [2021-11-20 06:42:21,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:21,889 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:21,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:21,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:21,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:21,890 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:21,890 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:21,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-20 06:42:21,906 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:21,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:21,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:21,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:21,944 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:21,951 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 [2021-11-20 06:42:21,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:21,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:21,960 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:21,960 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:21,960 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:21,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-20 06:42:21,961 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:21,961 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:21,974 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:22,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:22,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:22,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:22,003 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:22,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-20 06:42:22,008 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 [2021-11-20 06:42:22,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:22,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:22,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:22,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:22,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:22,016 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:22,016 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:22,030 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:22,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:22,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:22,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:22,053 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:22,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-20 06:42:22,056 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 [2021-11-20 06:42:22,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:22,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:22,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:22,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:22,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:22,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:22,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:22,074 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:42:22,079 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:42:22,079 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 06:42:22,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:22,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:22,104 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:22,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-20 06:42:22,122 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:42:22,122 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:42:22,122 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:42:22,123 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-11-20 06:42:22,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:22,161 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:42:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:22,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:42:22,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:22,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:22,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:22,432 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-11-20 06:42:22,434 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:42:22,628 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2021-11-20 06:42:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:42:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-11-20 06:42:22,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-11-20 06:42:22,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:22,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-11-20 06:42:22,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:22,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-11-20 06:42:22,640 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:22,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-11-20 06:42:22,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-20 06:42:22,659 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-11-20 06:42:22,660 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-11-20 06:42:22,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-11-20 06:42:22,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-11-20 06:42:22,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:22,663 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-11-20 06:42:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-11-20 06:42:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-11-20 06:42:22,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2021-11-20 06:42:22,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-11-20 06:42:22,699 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-11-20 06:42:22,699 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-11-20 06:42:22,699 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 06:42:22,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-11-20 06:42:22,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-20 06:42:22,702 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:22,702 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:22,703 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:22,703 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:22,704 INFO L791 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 197#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 214#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 213#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 226#L12 assume !(1 == ~n); 208#L15 call #t~ret4 := fibo2(~n - 1);< 230#fibo2ENTRY ~n := #in~n; 236#L20 assume !(~n < 1); 249#L22 assume !(1 == ~n); 204#L25 call #t~ret6 := fibo1(~n - 1);< 216#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#46#return; 207#L25-1 [2021-11-20 06:42:22,704 INFO L793 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret7 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret4 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret6 := fibo1(~n - 1);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#46#return; 207#L25-1 [2021-11-20 06:42:22,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:22,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-11-20 06:42:22,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:22,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183117184] [2021-11-20 06:42:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:22,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:22,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-20 06:42:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:42:22,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:22,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183117184] [2021-11-20 06:42:22,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183117184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:22,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:22,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:42:22,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925906452] [2021-11-20 06:42:22,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:22,792 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:42:22,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-11-20 06:42:22,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:22,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822094632] [2021-11-20 06:42:22,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:22,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:22,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:42:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:42:22,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:22,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822094632] [2021-11-20 06:42:22,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822094632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:42:22,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:42:22,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:42:22,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119225671] [2021-11-20 06:42:22,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:42:22,847 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:42:22,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:42:22,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:42:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:42:22,852 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 06:42:22,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:22,913 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-11-20 06:42:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:42:22,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-11-20 06:42:22,918 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-20 06:42:22,921 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-11-20 06:42:22,921 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-11-20 06:42:22,921 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-11-20 06:42:22,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-11-20 06:42:22,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:22,922 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-11-20 06:42:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-11-20 06:42:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-11-20 06:42:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 06:42:22,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-11-20 06:42:22,930 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-11-20 06:42:22,931 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-11-20 06:42:22,931 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 06:42:22,931 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-11-20 06:42:22,933 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-20 06:42:22,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:22,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:22,934 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:22,934 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:22,934 INFO L791 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 342#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 360#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 359#fibo1ENTRY ~n := #in~n; 361#L10 assume !(~n < 1); 371#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 382#L20 assume !(~n < 1); 398#L22 assume !(1 == ~n); 349#L25 call #t~ret6 := fibo1(~n - 1);< 362#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 386#fibo1FINAL assume true; 385#fibo1EXIT >#46#return; 351#L25-1 [2021-11-20 06:42:22,934 INFO L793 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret7 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret4 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret6 := fibo1(~n - 1);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume 1 == ~n;#res := 1; 370#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 351#L25-1 [2021-11-20 06:42:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:22,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-11-20 06:42:22,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:22,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260283305] [2021-11-20 06:42:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:22,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:22,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-20 06:42:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:23,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260283305] [2021-11-20 06:42:23,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260283305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:23,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765166567] [2021-11-20 06:42:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:23,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:23,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:23,015 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:23,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-20 06:42:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:23,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:42:23,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:23,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:23,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765166567] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:23,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:23,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-20 06:42:23,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679409603] [2021-11-20 06:42:23,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:23,333 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:42:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-11-20 06:42:23,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:23,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758181581] [2021-11-20 06:42:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:23,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:23,346 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:23,357 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:42:23,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:23,601 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:23,601 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:23,601 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:23,601 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:23,601 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:42:23,604 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:23,604 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:23,604 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:23,604 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2021-11-20 06:42:23,605 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:23,605 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:23,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:23,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:23,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:23,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:23,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:23,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:23,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:23,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:23,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:23,696 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:23,697 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:42:23,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:23,702 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:23,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:23,705 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:23,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-20 06:42:23,727 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:23,727 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:23,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:23,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:23,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:23,762 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:23,767 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:23,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:23,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-20 06:42:23,786 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:23,787 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:23,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:23,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:23,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:23,817 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:23,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-20 06:42:23,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:23,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:23,826 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:23,826 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:23,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-11-20 06:42:23,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:23,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:23,847 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:23,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-20 06:42:23,848 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:23,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:23,856 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:23,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:23,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:23,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:23,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:23,877 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:23,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:23,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:23,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-20 06:42:23,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:23,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:23,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:23,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:23,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:23,951 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:23,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:23,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:23,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-20 06:42:23,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-11-20 06:42:23,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:23,994 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:23,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-20 06:42:23,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:42:23,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:25,138 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:42:25,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:25,141 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:25,141 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:25,141 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:25,141 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:25,142 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:42:25,142 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:25,142 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:25,142 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:25,142 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2021-11-20 06:42:25,142 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:25,142 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:25,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:25,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:25,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:25,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:25,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:25,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:25,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:25,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:25,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:25,215 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:25,215 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:42:25,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:25,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:25,217 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:25,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-20 06:42:25,231 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 06:42:25,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:25,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:25,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:25,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:25,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:25,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:25,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:25,258 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:25,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:25,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:25,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:25,295 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:25,308 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 [2021-11-20 06:42:25,317 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:25,317 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:25,317 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:25,317 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:25,317 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:25,318 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:25,318 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:25,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-20 06:42:25,330 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:25,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:25,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:25,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:25,367 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:25,370 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 [2021-11-20 06:42:25,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:25,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:25,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:25,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:25,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:25,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:25,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:25,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-20 06:42:25,398 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:25,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:25,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:25,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:25,434 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:25,436 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 [2021-11-20 06:42:25,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:25,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:25,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:25,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:25,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:25,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:25,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:25,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-20 06:42:25,458 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:25,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:25,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:25,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:25,494 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:25,496 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 [2021-11-20 06:42:25,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:25,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:25,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:25,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:25,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:25,507 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:25,507 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:25,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-20 06:42:25,518 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:42:25,532 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:42:25,532 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 06:42:25,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:25,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:25,535 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:25,538 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:42:25,538 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:42:25,538 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:42:25,539 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-11-20 06:42:25,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-20 06:42:25,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:25,581 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:42:25,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:25,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:42:25,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:25,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:42:25,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:25,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:25,944 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2021-11-20 06:42:25,944 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:26,428 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2021-11-20 06:42:26,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-11-20 06:42:26,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-11-20 06:42:26,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:26,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-11-20 06:42:26,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:26,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-11-20 06:42:26,454 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:26,454 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-11-20 06:42:26,468 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-11-20 06:42:26,476 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-11-20 06:42:26,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:26,488 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-11-20 06:42:26,489 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-11-20 06:42:26,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-11-20 06:42:26,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:26,496 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-11-20 06:42:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-11-20 06:42:26,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-11-20 06:42:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2021-11-20 06:42:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-11-20 06:42:26,534 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-11-20 06:42:26,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:42:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:42:26,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:42:26,537 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 06:42:26,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:26,802 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2021-11-20 06:42:26,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:42:26,804 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2021-11-20 06:42:26,811 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-11-20 06:42:26,824 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2021-11-20 06:42:26,824 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2021-11-20 06:42:26,825 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2021-11-20 06:42:26,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2021-11-20 06:42:26,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:26,826 INFO L681 BuchiCegarLoop]: Abstraction has 204 states and 272 transitions. [2021-11-20 06:42:26,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2021-11-20 06:42:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2021-11-20 06:42:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 120 states have (on average 1.225) internal successors, (147), 129 states have internal predecessors, (147), 44 states have call successors, (46), 24 states have call predecessors, (46), 28 states have return successors, (64), 38 states have call predecessors, (64), 42 states have call successors, (64) [2021-11-20 06:42:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2021-11-20 06:42:26,854 INFO L704 BuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-11-20 06:42:26,854 INFO L587 BuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-11-20 06:42:26,854 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 06:42:26,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2021-11-20 06:42:26,857 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-11-20 06:42:26,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:26,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:26,858 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:26,859 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:26,859 INFO L791 eck$LassoCheckResult]: Stem: 1241#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 1276#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1313#fibo1ENTRY ~n := #in~n; 1350#L10 assume !(~n < 1); 1349#L12 assume !(1 == ~n); 1259#L15 call #t~ret4 := fibo2(~n - 1);< 1348#fibo2ENTRY ~n := #in~n; 1347#L20 assume !(~n < 1); 1346#L22 assume !(1 == ~n); 1271#L25 call #t~ret6 := fibo1(~n - 1);< 1270#fibo1ENTRY ~n := #in~n; 1272#L10 assume !(~n < 1); 1292#L12 assume !(1 == ~n); 1293#L15 call #t~ret4 := fibo2(~n - 1);< 1299#fibo2ENTRY ~n := #in~n; 1426#L20 assume !(~n < 1); 1425#L22 assume !(1 == ~n); 1280#L25 call #t~ret6 := fibo1(~n - 1);< 1344#fibo1ENTRY ~n := #in~n; 1345#L10 assume !(~n < 1); 1355#L12 assume !(1 == ~n); 1356#L15 call #t~ret4 := fibo2(~n - 1);< 1364#fibo2ENTRY ~n := #in~n; 1368#L20 assume ~n < 1;#res := 0; 1367#fibo2FINAL assume true; 1363#fibo2EXIT >#50#return; 1360#L15-1 call #t~ret5 := fibo2(~n - 2);< 1361#fibo2ENTRY ~n := #in~n; 1365#L20 assume ~n < 1;#res := 0; 1362#fibo2FINAL assume true; 1359#fibo2EXIT >#52#return; 1357#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1358#fibo1FINAL assume true; 1424#fibo1EXIT >#46#return; 1332#L25-1 call #t~ret7 := fibo1(~n - 2);< 1343#fibo1ENTRY ~n := #in~n; 1376#L10 assume ~n < 1;#res := 0; 1431#fibo1FINAL assume true; 1422#fibo1EXIT >#48#return; 1420#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1419#fibo2FINAL assume true; 1416#fibo2EXIT >#50#return; 1246#L15-1 call #t~ret5 := fibo2(~n - 2);< 1298#fibo2ENTRY [2021-11-20 06:42:26,859 INFO L793 eck$LassoCheckResult]: Loop: 1298#fibo2ENTRY ~n := #in~n; 1429#L20 assume !(~n < 1); 1243#L22 assume !(1 == ~n); 1248#L25 call #t~ret6 := fibo1(~n - 1);< 1265#fibo1ENTRY ~n := #in~n; 1269#L10 assume !(~n < 1); 1290#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1298#fibo2ENTRY [2021-11-20 06:42:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash -960039395, now seen corresponding path program 1 times [2021-11-20 06:42:26,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:26,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995671483] [2021-11-20 06:42:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:26,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:26,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:42:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:26,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:26,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:42:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 06:42:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-20 06:42:27,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:27,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995671483] [2021-11-20 06:42:27,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995671483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:27,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595358083] [2021-11-20 06:42:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:27,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:27,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:27,010 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:27,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-20 06:42:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:27,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:42:27,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:42:27,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:42:27,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595358083] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:27,769 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:27,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2021-11-20 06:42:27,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389630091] [2021-11-20 06:42:27,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:27,771 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:42:27,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2021-11-20 06:42:27,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:27,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407503168] [2021-11-20 06:42:27,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:27,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:27,776 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:27,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:27,784 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:42:27,894 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:27,894 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:27,894 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:27,894 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:27,894 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:42:27,894 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:27,894 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:27,895 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:27,895 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2021-11-20 06:42:27,895 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:27,895 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:27,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:27,975 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:27,976 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:42:27,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:27,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:27,977 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:27,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:27,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:27,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-20 06:42:28,005 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:28,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:28,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,042 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-20 06:42:28,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:28,051 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,059 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:28,059 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:28,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,081 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-20 06:42:28,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:28,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:28,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:28,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,134 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-20 06:42:28,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:28,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,145 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:28,145 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:28,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-11-20 06:42:28,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,166 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:28,192 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-20 06:42:28,215 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:28,215 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:28,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,251 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:28,254 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-20 06:42:28,274 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:28,274 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:28,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,298 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-20 06:42:28,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:28,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:28,308 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:28,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-11-20 06:42:28,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,329 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-20 06:42:28,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:28,330 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,338 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:28,338 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:28,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,358 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-20 06:42:28,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:28,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,369 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:28,369 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:28,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-11-20 06:42:28,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,392 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-20 06:42:28,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:28,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-11-20 06:42:28,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,424 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-20 06:42:28,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:42:28,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:28,505 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:42:28,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,508 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:28,508 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:28,508 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:28,508 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:28,508 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:42:28,508 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,508 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:28,509 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:28,509 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2021-11-20 06:42:28,509 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:28,509 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:28,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,527 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:28,588 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:28,588 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:42:28,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,589 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,599 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 [2021-11-20 06:42:28,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,608 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,609 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,609 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:28,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-20 06:42:28,630 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:28,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-11-20 06:42:28,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,661 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-20 06:42:28,662 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 [2021-11-20 06:42:28,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,670 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,671 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:28,680 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:28,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,714 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,717 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 [2021-11-20 06:42:28,726 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,726 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,726 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,726 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,726 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:28,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-20 06:42:28,742 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:28,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,783 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,785 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 [2021-11-20 06:42:28,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-20 06:42:28,795 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,795 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:28,800 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:28,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-11-20 06:42:28,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,821 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,823 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 [2021-11-20 06:42:28,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,832 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,832 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,832 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,832 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-20 06:42:28,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,832 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:28,835 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:28,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-11-20 06:42:28,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,855 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-20 06:42:28,856 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 [2021-11-20 06:42:28,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,863 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,864 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:28,865 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:28,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,885 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-11-20 06:42:28,886 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 [2021-11-20 06:42:28,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,893 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,893 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:28,895 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:28,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-11-20 06:42:28,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,915 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-11-20 06:42:28,916 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 [2021-11-20 06:42:28,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,923 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:28,925 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:28,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,950 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-11-20 06:42:28,951 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 [2021-11-20 06:42:28,958 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,958 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,959 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,959 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:28,960 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:28,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:28,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:28,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:28,981 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:28,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-11-20 06:42:28,990 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 [2021-11-20 06:42:28,998 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:28,998 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:28,998 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:28,998 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:28,998 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:28,999 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:28,999 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:29,026 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:42:29,029 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:42:29,030 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 06:42:29,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:29,034 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:29,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-11-20 06:42:29,035 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:42:29,035 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:42:29,035 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:42:29,035 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-11-20 06:42:29,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-11-20 06:42:29,055 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:42:29,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:29,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:42:29,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:29,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:29,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:29,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:29,748 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-11-20 06:42:29,748 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:29,928 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2021-11-20 06:42:29,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:29,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2021-11-20 06:42:29,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2021-11-20 06:42:29,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:29,939 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:42:29,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:30,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:42:30,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:30,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:30,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:30,555 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2021-11-20 06:42:30,555 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:30,737 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2021-11-20 06:42:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2021-11-20 06:42:30,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2021-11-20 06:42:30,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:30,740 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:42:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:30,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:42:30,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:31,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:31,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:31,394 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-11-20 06:42:31,394 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:31,570 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 587 states and 803 transitions. Complement of second has 25 states. [2021-11-20 06:42:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:31,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:31,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-11-20 06:42:31,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2021-11-20 06:42:31,573 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:31,573 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2021-11-20 06:42:31,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:31,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2021-11-20 06:42:31,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:31,575 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2021-11-20 06:42:31,585 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2021-11-20 06:42:31,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2021-11-20 06:42:31,595 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2021-11-20 06:42:31,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2021-11-20 06:42:31,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2021-11-20 06:42:31,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:31,596 INFO L681 BuchiCegarLoop]: Abstraction has 476 states and 676 transitions. [2021-11-20 06:42:31,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2021-11-20 06:42:31,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2021-11-20 06:42:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 290 states have internal predecessors, (337), 78 states have call successors, (81), 60 states have call predecessors, (81), 56 states have return successors, (126), 50 states have call predecessors, (126), 76 states have call successors, (126) [2021-11-20 06:42:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2021-11-20 06:42:31,652 INFO L704 BuchiCegarLoop]: Abstraction has 401 states and 544 transitions. [2021-11-20 06:42:31,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:42:31,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 06:42:31,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:42:31,653 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 16 states have call successors, (21), 7 states have call predecessors, (21), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2021-11-20 06:42:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:32,204 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2021-11-20 06:42:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 06:42:32,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2021-11-20 06:42:32,214 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2021-11-20 06:42:32,222 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2021-11-20 06:42:32,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2021-11-20 06:42:32,223 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2021-11-20 06:42:32,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2021-11-20 06:42:32,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:32,224 INFO L681 BuchiCegarLoop]: Abstraction has 457 states and 645 transitions. [2021-11-20 06:42:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2021-11-20 06:42:32,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2021-11-20 06:42:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 269 states have (on average 1.20817843866171) internal successors, (325), 298 states have internal predecessors, (325), 85 states have call successors, (87), 57 states have call predecessors, (87), 60 states have return successors, (161), 58 states have call predecessors, (161), 83 states have call successors, (161) [2021-11-20 06:42:32,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2021-11-20 06:42:32,243 INFO L704 BuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2021-11-20 06:42:32,243 INFO L587 BuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2021-11-20 06:42:32,243 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 06:42:32,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2021-11-20 06:42:32,247 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2021-11-20 06:42:32,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:32,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:32,249 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:32,249 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:32,250 INFO L791 eck$LassoCheckResult]: Stem: 5286#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5287#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 5315#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5369#fibo1ENTRY ~n := #in~n; 5421#L10 assume !(~n < 1); 5420#L12 assume !(1 == ~n); 5416#L15 call #t~ret4 := fibo2(~n - 1);< 5419#fibo2ENTRY ~n := #in~n; 5418#L20 assume !(~n < 1); 5417#L22 assume !(1 == ~n); 5412#L25 call #t~ret6 := fibo1(~n - 1);< 5415#fibo1ENTRY ~n := #in~n; 5414#L10 assume !(~n < 1); 5413#L12 assume !(1 == ~n); 5408#L15 call #t~ret4 := fibo2(~n - 1);< 5411#fibo2ENTRY ~n := #in~n; 5410#L20 assume !(~n < 1); 5409#L22 assume !(1 == ~n); 5404#L25 call #t~ret6 := fibo1(~n - 1);< 5407#fibo1ENTRY ~n := #in~n; 5406#L10 assume !(~n < 1); 5405#L12 assume !(1 == ~n); 5390#L15 call #t~ret4 := fibo2(~n - 1);< 5403#fibo2ENTRY ~n := #in~n; 5399#L20 assume !(~n < 1); 5400#L22 assume !(1 == ~n); 5318#L25 call #t~ret6 := fibo1(~n - 1);< 5427#fibo1ENTRY ~n := #in~n; 5428#L10 assume !(~n < 1); 5578#L12 assume 1 == ~n;#res := 1; 5579#fibo1FINAL assume true; 5644#fibo1EXIT >#46#return; 5487#L25-1 call #t~ret7 := fibo1(~n - 2);< 5498#fibo1ENTRY ~n := #in~n; 5494#L10 assume !(~n < 1); 5495#L12 assume !(1 == ~n); 5479#L15 call #t~ret4 := fibo2(~n - 1);< 5486#fibo2ENTRY ~n := #in~n; 5484#L20 assume !(~n < 1); 5481#L22 assume 1 == ~n;#res := 1; 5482#fibo2FINAL assume true; 5567#fibo2EXIT >#50#return; 5356#L15-1 [2021-11-20 06:42:32,250 INFO L793 eck$LassoCheckResult]: Loop: 5356#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#fibo2ENTRY ~n := #in~n; 5348#L20 assume !(~n < 1); 5357#L22 assume !(1 == ~n); 5550#L25 call #t~ret6 := fibo1(~n - 1);< 5558#fibo1ENTRY ~n := #in~n; 5597#L10 assume !(~n < 1); 5596#L12 assume 1 == ~n;#res := 1; 5595#fibo1FINAL assume true; 5593#fibo1EXIT >#46#return; 5585#L25-1 call #t~ret7 := fibo1(~n - 2);< 5591#fibo1ENTRY ~n := #in~n; 5590#L10 assume !(~n < 1); 5589#L12 assume !(1 == ~n); 5350#L15 call #t~ret4 := fibo2(~n - 1);< 5362#fibo2ENTRY ~n := #in~n; 5363#L20 assume !(~n < 1); 5630#L22 assume !(1 == ~n); 5607#L25 call #t~ret6 := fibo1(~n - 1);< 5608#fibo1ENTRY ~n := #in~n; 5622#L10 assume !(~n < 1); 5620#L12 assume 1 == ~n;#res := 1; 5619#fibo1FINAL assume true; 5606#fibo1EXIT >#46#return; 5603#L25-1 call #t~ret7 := fibo1(~n - 2);< 5605#fibo1ENTRY ~n := #in~n; 5652#L10 assume ~n < 1;#res := 0; 5649#fibo1FINAL assume true; 5602#fibo1EXIT >#48#return; 5555#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5599#fibo2FINAL assume true; 5564#fibo2EXIT >#50#return; 5356#L15-1 [2021-11-20 06:42:32,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1816161101, now seen corresponding path program 1 times [2021-11-20 06:42:32,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:32,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378534649] [2021-11-20 06:42:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:32,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:42:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:42:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,428 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:32,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:32,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378534649] [2021-11-20 06:42:32,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378534649] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:32,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733613252] [2021-11-20 06:42:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:32,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:32,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:32,439 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:32,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-20 06:42:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 06:42:32,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:32,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:32,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733613252] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:32,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:32,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2021-11-20 06:42:32,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515713423] [2021-11-20 06:42:32,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:32,782 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:42:32,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:32,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1364976163, now seen corresponding path program 1 times [2021-11-20 06:42:32,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:32,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343662772] [2021-11-20 06:42:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:32,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:42:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-20 06:42:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:42:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,861 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:42:32,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:32,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343662772] [2021-11-20 06:42:32,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343662772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:32,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930617738] [2021-11-20 06:42:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:32,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:32,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:32,866 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:32,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-20 06:42:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:32,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:42:32,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 06:42:32,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-20 06:42:33,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930617738] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:33,085 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:33,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-11-20 06:42:33,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629576990] [2021-11-20 06:42:33,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:33,086 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:42:33,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:42:33,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:42:33,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:42:33,087 INFO L87 Difference]: Start difference. First operand 414 states and 573 transitions. cyclomatic complexity: 166 Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 06:42:33,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:33,173 INFO L93 Difference]: Finished difference Result 384 states and 501 transitions. [2021-11-20 06:42:33,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:42:33,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 384 states and 501 transitions. [2021-11-20 06:42:33,180 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2021-11-20 06:42:33,186 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 384 states to 359 states and 475 transitions. [2021-11-20 06:42:33,186 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2021-11-20 06:42:33,187 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 222 [2021-11-20 06:42:33,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 359 states and 475 transitions. [2021-11-20 06:42:33,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:33,187 INFO L681 BuchiCegarLoop]: Abstraction has 359 states and 475 transitions. [2021-11-20 06:42:33,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states and 475 transitions. [2021-11-20 06:42:33,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2021-11-20 06:42:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 227 states have (on average 1.1629955947136563) internal successors, (264), 244 states have internal predecessors, (264), 65 states have call successors, (66), 50 states have call predecessors, (66), 52 states have return successors, (119), 49 states have call predecessors, (119), 63 states have call successors, (119) [2021-11-20 06:42:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 449 transitions. [2021-11-20 06:42:33,206 INFO L704 BuchiCegarLoop]: Abstraction has 344 states and 449 transitions. [2021-11-20 06:42:33,206 INFO L587 BuchiCegarLoop]: Abstraction has 344 states and 449 transitions. [2021-11-20 06:42:33,206 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-20 06:42:33,206 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 344 states and 449 transitions. [2021-11-20 06:42:33,210 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2021-11-20 06:42:33,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:33,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:33,219 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:33,219 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:33,220 INFO L791 eck$LassoCheckResult]: Stem: 6590#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6591#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 6621#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6659#fibo1ENTRY ~n := #in~n; 6773#L10 assume !(~n < 1); 6772#L12 assume !(1 == ~n); 6768#L15 call #t~ret4 := fibo2(~n - 1);< 6771#fibo2ENTRY ~n := #in~n; 6770#L20 assume !(~n < 1); 6769#L22 assume !(1 == ~n); 6759#L25 call #t~ret6 := fibo1(~n - 1);< 6767#fibo1ENTRY ~n := #in~n; 6766#L10 assume !(~n < 1); 6765#L12 assume !(1 == ~n); 6755#L15 call #t~ret4 := fibo2(~n - 1);< 6758#fibo2ENTRY ~n := #in~n; 6757#L20 assume !(~n < 1); 6756#L22 assume !(1 == ~n); 6741#L25 call #t~ret6 := fibo1(~n - 1);< 6754#fibo1ENTRY ~n := #in~n; 6753#L10 assume !(~n < 1); 6752#L12 assume !(1 == ~n); 6698#L15 call #t~ret4 := fibo2(~n - 1);< 6678#fibo2ENTRY ~n := #in~n; 6738#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6629#L25 call #t~ret6 := fibo1(~n - 1);< 6749#fibo1ENTRY ~n := #in~n; 6747#L10 assume !(~n < 1); 6745#L12 assume !(1 == ~n); 6677#L15 call #t~ret4 := fibo2(~n - 1);< 6678#fibo2ENTRY ~n := #in~n; 6738#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6629#L25 call #t~ret6 := fibo1(~n - 1);< 6749#fibo1ENTRY ~n := #in~n; 6750#L10 assume !(~n < 1); 6764#L12 assume 1 == ~n;#res := 1; 6902#fibo1FINAL assume true; 6898#fibo1EXIT >#46#return; 6899#L25-1 call #t~ret7 := fibo1(~n - 2);< 6910#fibo1ENTRY ~n := #in~n; 6912#L10 assume ~n < 1;#res := 0; 6909#fibo1FINAL assume true; 6907#fibo1EXIT >#48#return; 6891#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6889#fibo2FINAL assume true; 6825#fibo2EXIT >#50#return; 6796#L15-1 [2021-11-20 06:42:33,223 INFO L793 eck$LassoCheckResult]: Loop: 6796#L15-1 call #t~ret5 := fibo2(~n - 2);< 6801#fibo2ENTRY ~n := #in~n; 6826#L20 assume !(~n < 1); 6823#L22 assume !(1 == ~n); 6817#L25 call #t~ret6 := fibo1(~n - 1);< 6821#fibo1ENTRY ~n := #in~n; 6859#L10 assume !(~n < 1); 6856#L12 assume !(1 == ~n); 6805#L15 call #t~ret4 := fibo2(~n - 1);< 6833#fibo2ENTRY ~n := #in~n; 6826#L20 assume !(~n < 1); 6823#L22 assume !(1 == ~n); 6817#L25 call #t~ret6 := fibo1(~n - 1);< 6821#fibo1ENTRY ~n := #in~n; 6859#L10 assume !(~n < 1); 6856#L12 assume !(1 == ~n); 6805#L15 call #t~ret4 := fibo2(~n - 1);< 6833#fibo2ENTRY ~n := #in~n; 6834#L20 assume !(~n < 1); 6852#L22 assume 1 == ~n;#res := 1; 6850#fibo2FINAL assume true; 6831#fibo2EXIT >#50#return; 6796#L15-1 call #t~ret5 := fibo2(~n - 2);< 6801#fibo2ENTRY ~n := #in~n; 6835#L20 assume ~n < 1;#res := 0; 6876#fibo2FINAL assume true; 6824#fibo2EXIT >#52#return; 6800#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6820#fibo1FINAL assume true; 6812#fibo1EXIT >#46#return; 6814#L25-1 call #t~ret7 := fibo1(~n - 2);< 6819#fibo1ENTRY ~n := #in~n; 6857#L10 assume ~n < 1;#res := 0; 6858#fibo1FINAL assume true; 6842#fibo1EXIT >#48#return; 6840#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6838#fibo2FINAL assume true; 6803#fibo2EXIT >#50#return; 6796#L15-1 [2021-11-20 06:42:33,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199334, now seen corresponding path program 1 times [2021-11-20 06:42:33,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924044859] [2021-11-20 06:42:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:33,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 06:42:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:33,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:42:33,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:42:33,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:33,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924044859] [2021-11-20 06:42:33,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924044859] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:33,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630824992] [2021-11-20 06:42:33,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:33,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:33,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:33,528 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:33,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-20 06:42:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:33,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:42:33,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:42:33,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:34,041 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:42:34,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630824992] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:34,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:34,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2021-11-20 06:42:34,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101511210] [2021-11-20 06:42:34,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:34,043 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:42:34,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:34,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1513837346, now seen corresponding path program 1 times [2021-11-20 06:42:34,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:34,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703172109] [2021-11-20 06:42:34,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:34,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 06:42:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:34,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:42:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:34,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 06:42:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 06:42:34,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:34,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703172109] [2021-11-20 06:42:34,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703172109] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:34,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003980666] [2021-11-20 06:42:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:34,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:34,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:34,139 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:34,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-20 06:42:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:34,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:42:34,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:34,295 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 06:42:34,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-20 06:42:34,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003980666] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:34,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:34,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2021-11-20 06:42:34,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284224371] [2021-11-20 06:42:34,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:34,597 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 06:42:34,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:42:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:42:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:42:34,599 INFO L87 Difference]: Start difference. First operand 344 states and 449 transitions. cyclomatic complexity: 111 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-20 06:42:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:34,760 INFO L93 Difference]: Finished difference Result 360 states and 459 transitions. [2021-11-20 06:42:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:42:34,761 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 360 states and 459 transitions. [2021-11-20 06:42:34,766 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2021-11-20 06:42:34,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 360 states to 360 states and 459 transitions. [2021-11-20 06:42:34,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2021-11-20 06:42:34,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2021-11-20 06:42:34,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 360 states and 459 transitions. [2021-11-20 06:42:34,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:34,773 INFO L681 BuchiCegarLoop]: Abstraction has 360 states and 459 transitions. [2021-11-20 06:42:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states and 459 transitions. [2021-11-20 06:42:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 321. [2021-11-20 06:42:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 213 states have (on average 1.1737089201877935) internal successors, (250), 230 states have internal predecessors, (250), 61 states have call successors, (62), 46 states have call predecessors, (62), 47 states have return successors, (98), 44 states have call predecessors, (98), 59 states have call successors, (98) [2021-11-20 06:42:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 410 transitions. [2021-11-20 06:42:34,786 INFO L704 BuchiCegarLoop]: Abstraction has 321 states and 410 transitions. [2021-11-20 06:42:34,786 INFO L587 BuchiCegarLoop]: Abstraction has 321 states and 410 transitions. [2021-11-20 06:42:34,786 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-20 06:42:34,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 321 states and 410 transitions. [2021-11-20 06:42:34,789 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2021-11-20 06:42:34,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:34,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:34,790 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:34,790 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:34,791 INFO L791 eck$LassoCheckResult]: Stem: 7933#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7934#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 7963#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8007#fibo1ENTRY ~n := #in~n; 8110#L10 assume !(~n < 1); 8109#L12 assume !(1 == ~n); 8105#L15 call #t~ret4 := fibo2(~n - 1);< 8108#fibo2ENTRY ~n := #in~n; 8107#L20 assume !(~n < 1); 8106#L22 assume !(1 == ~n); 8101#L25 call #t~ret6 := fibo1(~n - 1);< 8104#fibo1ENTRY ~n := #in~n; 8103#L10 assume !(~n < 1); 8102#L12 assume !(1 == ~n); 8097#L15 call #t~ret4 := fibo2(~n - 1);< 8100#fibo2ENTRY ~n := #in~n; 8099#L20 assume !(~n < 1); 8098#L22 assume !(1 == ~n); 8093#L25 call #t~ret6 := fibo1(~n - 1);< 8096#fibo1ENTRY ~n := #in~n; 8095#L10 assume !(~n < 1); 8094#L12 assume !(1 == ~n); 8016#L15 call #t~ret4 := fibo2(~n - 1);< 8018#fibo2ENTRY ~n := #in~n; 8092#L20 assume !(~n < 1); 8079#L22 assume !(1 == ~n); 7977#L25 call #t~ret6 := fibo1(~n - 1);< 8041#fibo1ENTRY ~n := #in~n; 8075#L10 assume !(~n < 1); 8076#L12 assume !(1 == ~n); 8017#L15 call #t~ret4 := fibo2(~n - 1);< 8018#fibo2ENTRY ~n := #in~n; 8092#L20 assume !(~n < 1); 8079#L22 assume !(1 == ~n); 7977#L25 call #t~ret6 := fibo1(~n - 1);< 8041#fibo1ENTRY ~n := #in~n; 8077#L10 assume !(~n < 1); 8088#L12 assume 1 == ~n;#res := 1; 8252#fibo1FINAL assume true; 8251#fibo1EXIT >#46#return; 7942#L25-1 call #t~ret7 := fibo1(~n - 2);< 8216#fibo1ENTRY ~n := #in~n; 8253#L10 assume ~n < 1;#res := 0; 7941#fibo1FINAL assume true; 7943#fibo1EXIT >#48#return; 8214#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8213#fibo2FINAL assume true; 8117#fibo2EXIT >#50#return; 8118#L15-1 [2021-11-20 06:42:34,791 INFO L793 eck$LassoCheckResult]: Loop: 8118#L15-1 call #t~ret5 := fibo2(~n - 2);< 8129#fibo2ENTRY ~n := #in~n; 8173#L20 assume !(~n < 1); 8152#L22 assume !(1 == ~n); 8143#L25 call #t~ret6 := fibo1(~n - 1);< 8150#fibo1ENTRY ~n := #in~n; 8188#L10 assume !(~n < 1); 8185#L12 assume !(1 == ~n); 8125#L15 call #t~ret4 := fibo2(~n - 1);< 8137#fibo2ENTRY ~n := #in~n; 8183#L20 assume !(~n < 1); 8178#L22 assume !(1 == ~n); 8179#L25 call #t~ret6 := fibo1(~n - 1);< 8203#fibo1ENTRY ~n := #in~n; 8206#L10 assume !(~n < 1); 8205#L12 assume 1 == ~n;#res := 1; 8204#fibo1FINAL assume true; 8202#fibo1EXIT >#46#return; 8147#L25-1 call #t~ret7 := fibo1(~n - 2);< 8181#fibo1ENTRY ~n := #in~n; 8224#L10 assume ~n < 1;#res := 0; 8155#fibo1FINAL assume true; 8180#fibo1EXIT >#48#return; 8177#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8175#fibo2FINAL assume true; 8164#fibo2EXIT >#50#return; 8118#L15-1 [2021-11-20 06:42:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199334, now seen corresponding path program 2 times [2021-11-20 06:42:34,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:34,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442547198] [2021-11-20 06:42:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:34,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 06:42:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:35,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:35,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:42:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 06:42:35,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:35,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442547198] [2021-11-20 06:42:35,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442547198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:35,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099455037] [2021-11-20 06:42:35,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:42:35,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:35,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:35,029 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:35,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-20 06:42:35,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:42:35,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:42:35,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 06:42:35,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:35,230 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:42:35,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:42:35,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099455037] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:35,484 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:35,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2021-11-20 06:42:35,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531432606] [2021-11-20 06:42:35,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:35,485 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:42:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 2 times [2021-11-20 06:42:35,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:35,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344850329] [2021-11-20 06:42:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:35,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:35,490 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:35,496 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:42:35,895 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:35,895 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:35,895 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:35,895 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:35,895 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:42:35,895 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:35,895 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:35,895 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:35,895 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2021-11-20 06:42:35,895 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:35,895 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:35,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:35,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:35,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:35,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:35,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:35,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:35,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:35,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:35,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:35,990 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:35,990 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:42:35,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:35,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:35,994 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:35,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:35,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:36,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-11-20 06:42:36,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:36,019 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:36,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:36,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:36,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:36,052 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:36,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-11-20 06:42:36,053 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:36,053 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:36,061 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:36,061 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:36,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:36,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:36,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:36,083 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:36,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-11-20 06:42:36,084 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:36,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:36,094 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:36,094 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:36,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-11-20 06:42:36,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:36,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:36,117 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:36,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-11-20 06:42:36,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:36,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:36,127 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:36,127 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:36,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:36,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:36,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:36,148 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:36,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-11-20 06:42:36,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:36,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:36,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:36,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:36,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:36,212 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:36,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-11-20 06:42:36,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:42:36,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:37,547 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:42:37,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-11-20 06:42:37,550 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:37,550 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:37,550 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:37,550 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:37,551 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:42:37,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:37,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:37,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:37,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2021-11-20 06:42:37,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:37,551 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:37,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:37,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:37,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:37,564 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:37,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:37,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:37,580 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:37,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:37,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:37,641 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:37,641 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:42:37,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:37,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:37,642 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:37,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-11-20 06:42:37,643 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 [2021-11-20 06:42:37,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:37,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:37,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:37,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:37,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:37,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:37,651 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:37,652 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:37,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2021-11-20 06:42:37,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:37,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:37,673 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:37,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-11-20 06:42:37,674 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 [2021-11-20 06:42:37,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:37,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:37,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:37,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:37,682 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:37,682 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:37,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:37,683 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:37,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:37,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:37,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:37,704 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:37,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-11-20 06:42:37,706 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 [2021-11-20 06:42:37,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:37,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:37,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:37,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:37,713 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:37,714 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:37,714 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:37,718 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:37,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:37,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:37,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:37,738 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:37,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-11-20 06:42:37,740 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 [2021-11-20 06:42:37,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:37,747 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:37,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:37,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:37,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:37,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:37,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:37,749 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:37,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:37,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:37,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:37,769 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:37,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-11-20 06:42:37,770 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 [2021-11-20 06:42:37,777 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:37,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:37,778 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:37,778 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:37,778 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:37,780 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:37,780 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:37,782 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:42:37,785 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:42:37,785 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 06:42:37,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:37,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:37,786 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:37,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-11-20 06:42:37,787 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:42:37,787 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:42:37,787 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:42:37,787 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-11-20 06:42:37,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:37,832 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:42:37,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:37,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 06:42:37,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:38,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 06:42:38,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:38,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 06:42:38,551 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2021-11-20 06:42:38,552 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 321 states and 410 transitions. cyclomatic complexity: 95 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 06:42:38,970 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 321 states and 410 transitions. cyclomatic complexity: 95. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1107 states and 1416 transitions. Complement of second has 46 states. [2021-11-20 06:42:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 06:42:38,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2021-11-20 06:42:38,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 26 letters. [2021-11-20 06:42:38,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:38,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 74 letters. Loop has 26 letters. [2021-11-20 06:42:38,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:38,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 52 letters. [2021-11-20 06:42:38,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:38,976 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1107 states and 1416 transitions. [2021-11-20 06:42:38,992 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2021-11-20 06:42:39,007 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1107 states to 1020 states and 1321 transitions. [2021-11-20 06:42:39,007 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 429 [2021-11-20 06:42:39,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 453 [2021-11-20 06:42:39,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1020 states and 1321 transitions. [2021-11-20 06:42:39,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:39,009 INFO L681 BuchiCegarLoop]: Abstraction has 1020 states and 1321 transitions. [2021-11-20 06:42:39,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states and 1321 transitions. [2021-11-20 06:42:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 963. [2021-11-20 06:42:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 631 states have (on average 1.1933438985736926) internal successors, (753), 691 states have internal predecessors, (753), 184 states have call successors, (190), 132 states have call predecessors, (190), 148 states have return successors, (305), 139 states have call predecessors, (305), 182 states have call successors, (305) [2021-11-20 06:42:39,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1248 transitions. [2021-11-20 06:42:39,044 INFO L704 BuchiCegarLoop]: Abstraction has 963 states and 1248 transitions. [2021-11-20 06:42:39,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:42:39,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 06:42:39,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-11-20 06:42:39,046 INFO L87 Difference]: Start difference. First operand 963 states and 1248 transitions. Second operand has 26 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (13), 8 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 06:42:39,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:39,855 INFO L93 Difference]: Finished difference Result 1028 states and 1212 transitions. [2021-11-20 06:42:39,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 06:42:39,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1028 states and 1212 transitions. [2021-11-20 06:42:39,873 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 90 [2021-11-20 06:42:39,881 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1028 states to 450 states and 523 transitions. [2021-11-20 06:42:39,882 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 289 [2021-11-20 06:42:39,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 289 [2021-11-20 06:42:39,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 523 transitions. [2021-11-20 06:42:39,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:39,883 INFO L681 BuchiCegarLoop]: Abstraction has 450 states and 523 transitions. [2021-11-20 06:42:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 523 transitions. [2021-11-20 06:42:39,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 402. [2021-11-20 06:42:39,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 266 states have (on average 1.112781954887218) internal successors, (296), 283 states have internal predecessors, (296), 83 states have call successors, (84), 63 states have call predecessors, (84), 53 states have return successors, (88), 55 states have call predecessors, (88), 66 states have call successors, (88) [2021-11-20 06:42:39,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 468 transitions. [2021-11-20 06:42:39,898 INFO L704 BuchiCegarLoop]: Abstraction has 402 states and 468 transitions. [2021-11-20 06:42:39,898 INFO L587 BuchiCegarLoop]: Abstraction has 402 states and 468 transitions. [2021-11-20 06:42:39,898 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-20 06:42:39,899 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 402 states and 468 transitions. [2021-11-20 06:42:39,903 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 64 [2021-11-20 06:42:39,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:39,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:39,910 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:39,910 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:39,911 INFO L791 eck$LassoCheckResult]: Stem: 12047#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 12048#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 12076#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 12112#fibo1ENTRY ~n := #in~n; 12188#L10 assume !(~n < 1); 12187#L12 assume !(1 == ~n); 12183#L15 call #t~ret4 := fibo2(~n - 1);< 12186#fibo2ENTRY ~n := #in~n; 12185#L20 assume !(~n < 1); 12184#L22 assume !(1 == ~n); 12179#L25 call #t~ret6 := fibo1(~n - 1);< 12182#fibo1ENTRY ~n := #in~n; 12181#L10 assume !(~n < 1); 12180#L12 assume !(1 == ~n); 12175#L15 call #t~ret4 := fibo2(~n - 1);< 12178#fibo2ENTRY ~n := #in~n; 12177#L20 assume !(~n < 1); 12176#L22 assume !(1 == ~n); 12170#L25 call #t~ret6 := fibo1(~n - 1);< 12174#fibo1ENTRY ~n := #in~n; 12173#L10 assume !(~n < 1); 12172#L12 assume !(1 == ~n); 12106#L15 call #t~ret4 := fibo2(~n - 1);< 12171#fibo2ENTRY ~n := #in~n; 12212#L20 assume !(~n < 1); 12210#L22 assume !(1 == ~n); 12155#L25 call #t~ret6 := fibo1(~n - 1);< 12215#fibo1ENTRY ~n := #in~n; 12216#L10 assume !(~n < 1); 12230#L12 assume !(1 == ~n); 12226#L15 call #t~ret4 := fibo2(~n - 1);< 12227#fibo2ENTRY ~n := #in~n; 12232#L20 assume !(~n < 1); 12231#L22 assume 1 == ~n;#res := 1; 12229#fibo2FINAL assume true; 12225#fibo2EXIT >#50#return; 12222#L15-1 call #t~ret5 := fibo2(~n - 2);< 12223#fibo2ENTRY ~n := #in~n; 12228#L20 assume ~n < 1;#res := 0; 12224#fibo2FINAL assume true; 12221#fibo2EXIT >#52#return; 12220#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12219#fibo1FINAL assume true; 12154#fibo1EXIT >#46#return; 12139#L25-1 call #t~ret7 := fibo1(~n - 2);< 12068#fibo1ENTRY ~n := #in~n; 12138#L10 assume !(~n < 1); 12140#L12 assume !(1 == ~n); 12067#L15 call #t~ret4 := fibo2(~n - 1);< 12132#fibo2ENTRY ~n := #in~n; 12133#L20 assume !(~n < 1); 12122#L22 assume 1 == ~n;#res := 1; 12123#fibo2FINAL assume true; 12274#fibo2EXIT >#50#return; 12085#L15-1 [2021-11-20 06:42:39,911 INFO L793 eck$LassoCheckResult]: Loop: 12085#L15-1 call #t~ret5 := fibo2(~n - 2);< 12272#fibo2ENTRY ~n := #in~n; 12302#L20 assume !(~n < 1); 12264#L22 assume !(1 == ~n); 12251#L25 call #t~ret6 := fibo1(~n - 1);< 12259#fibo1ENTRY ~n := #in~n; 12289#L10 assume !(~n < 1); 12282#L12 assume !(1 == ~n); 12089#L15 call #t~ret4 := fibo2(~n - 1);< 12279#fibo2ENTRY ~n := #in~n; 12303#L20 assume !(~n < 1); 12376#L22 assume 1 == ~n;#res := 1; 12375#fibo2FINAL assume true; 12277#fibo2EXIT >#50#return; 12085#L15-1 [2021-11-20 06:42:39,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:39,911 INFO L85 PathProgramCache]: Analyzing trace with hash 628833608, now seen corresponding path program 1 times [2021-11-20 06:42:39,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:39,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171073674] [2021-11-20 06:42:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:39,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-20 06:42:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:42:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:40,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 06:42:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:40,119 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 06:42:40,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:40,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171073674] [2021-11-20 06:42:40,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171073674] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:40,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373441680] [2021-11-20 06:42:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:40,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:40,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:40,121 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:40,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-20 06:42:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:40,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:42:40,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 06:42:40,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-20 06:42:40,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373441680] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:40,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:40,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2021-11-20 06:42:40,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124660481] [2021-11-20 06:42:40,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:40,537 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:42:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:40,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1489002864, now seen corresponding path program 1 times [2021-11-20 06:42:40,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:40,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771454211] [2021-11-20 06:42:40,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:40,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:40,542 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:40,546 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:42:40,732 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:40,733 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:40,733 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:40,733 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:40,733 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:42:40,733 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:40,733 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:40,733 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:40,733 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2021-11-20 06:42:40,733 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:40,733 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:40,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:40,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:40,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:40,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:40,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:40,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:40,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:40,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:40,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:40,795 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:40,796 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:42:40,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:40,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:40,797 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:40,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-11-20 06:42:40,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:40,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:40,807 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:40,807 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:40,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2021-11-20 06:42:40,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:40,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:40,826 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:40,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-11-20 06:42:40,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:40,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:40,836 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:40,836 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:40,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2021-11-20 06:42:40,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:40,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:40,856 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:40,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-11-20 06:42:40,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:40,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:40,865 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:40,865 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:40,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:40,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:40,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:40,885 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:40,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-11-20 06:42:40,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:40,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:40,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:40,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:40,914 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:40,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-11-20 06:42:40,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:42:40,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:41,912 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:42:41,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:41,915 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:41,915 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:41,915 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:41,915 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:41,915 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:42:41,915 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:41,915 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:41,915 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:41,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2021-11-20 06:42:41,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:41,915 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:41,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:41,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:41,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:41,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:41,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:41,930 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:41,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:41,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:41,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:41,977 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:41,977 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:42:41,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:41,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:41,987 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:41,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-11-20 06:42:41,989 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 [2021-11-20 06:42:41,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:41,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:41,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:41,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:41,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:41,996 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:41,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:41,997 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:42,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:42,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:42,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:42,018 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:42,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-11-20 06:42:42,019 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 [2021-11-20 06:42:42,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:42,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:42,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:42,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:42,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:42,027 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:42,027 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:42,037 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:42,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2021-11-20 06:42:42,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:42,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:42,059 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:42,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2021-11-20 06:42:42,060 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 [2021-11-20 06:42:42,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:42,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:42,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:42,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:42,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:42,070 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:42,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:42,073 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:42:42,075 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:42:42,076 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 06:42:42,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:42,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:42,077 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:42,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-11-20 06:42:42,078 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:42:42,078 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:42:42,078 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:42:42,078 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-11-20 06:42:42,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:42,097 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:42:42,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:42,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:42,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 06:42:42,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:42,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:42:42,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:42,652 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2021-11-20 06:42:42,652 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 06:42:42,926 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 553 states and 633 transitions. Complement of second has 40 states. [2021-11-20 06:42:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 06:42:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 50 transitions. [2021-11-20 06:42:42,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 50 transitions. Stem has 54 letters. Loop has 14 letters. [2021-11-20 06:42:42,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:42,929 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:42:42,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:43,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 06:42:43,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:43,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:43,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:42:43,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:43,549 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2021-11-20 06:42:43,549 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 06:42:43,739 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 475 states and 545 transitions. Complement of second has 26 states. [2021-11-20 06:42:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:43,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 06:42:43,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 31 transitions. [2021-11-20 06:42:43,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 31 transitions. Stem has 54 letters. Loop has 14 letters. [2021-11-20 06:42:43,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:43,753 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:42:43,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:43,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 06:42:43,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:44,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 06:42:44,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:44,390 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2021-11-20 06:42:44,390 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 06:42:44,710 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1507 states and 1740 transitions. Complement of second has 102 states. [2021-11-20 06:42:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:44,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 06:42:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2021-11-20 06:42:44,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 14 letters. [2021-11-20 06:42:44,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:44,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 68 letters. Loop has 14 letters. [2021-11-20 06:42:44,713 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:44,713 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 28 letters. [2021-11-20 06:42:44,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:44,714 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1507 states and 1740 transitions. [2021-11-20 06:42:44,733 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 166 [2021-11-20 06:42:44,745 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1507 states to 892 states and 1055 transitions. [2021-11-20 06:42:44,745 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 415 [2021-11-20 06:42:44,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 462 [2021-11-20 06:42:44,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 892 states and 1055 transitions. [2021-11-20 06:42:44,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:44,746 INFO L681 BuchiCegarLoop]: Abstraction has 892 states and 1055 transitions. [2021-11-20 06:42:44,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states and 1055 transitions. [2021-11-20 06:42:44,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 798. [2021-11-20 06:42:44,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 525 states have (on average 1.1123809523809525) internal successors, (584), 569 states have internal predecessors, (584), 160 states have call successors, (170), 121 states have call predecessors, (170), 113 states have return successors, (181), 107 states have call predecessors, (181), 136 states have call successors, (181) [2021-11-20 06:42:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 935 transitions. [2021-11-20 06:42:44,773 INFO L704 BuchiCegarLoop]: Abstraction has 798 states and 935 transitions. [2021-11-20 06:42:44,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:42:44,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 06:42:44,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:42:44,774 INFO L87 Difference]: Start difference. First operand 798 states and 935 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 14 states have internal predecessors, (41), 10 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 06:42:45,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:45,195 INFO L93 Difference]: Finished difference Result 617 states and 721 transitions. [2021-11-20 06:42:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 06:42:45,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 617 states and 721 transitions. [2021-11-20 06:42:45,204 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2021-11-20 06:42:45,210 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 617 states to 496 states and 589 transitions. [2021-11-20 06:42:45,210 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 281 [2021-11-20 06:42:45,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 305 [2021-11-20 06:42:45,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 589 transitions. [2021-11-20 06:42:45,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:45,211 INFO L681 BuchiCegarLoop]: Abstraction has 496 states and 589 transitions. [2021-11-20 06:42:45,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 589 transitions. [2021-11-20 06:42:45,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 491. [2021-11-20 06:42:45,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 320 states have (on average 1.1125) internal successors, (356), 350 states have internal predecessors, (356), 97 states have call successors, (103), 69 states have call predecessors, (103), 74 states have return successors, (122), 71 states have call predecessors, (122), 88 states have call successors, (122) [2021-11-20 06:42:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 581 transitions. [2021-11-20 06:42:45,227 INFO L704 BuchiCegarLoop]: Abstraction has 491 states and 581 transitions. [2021-11-20 06:42:45,227 INFO L587 BuchiCegarLoop]: Abstraction has 491 states and 581 transitions. [2021-11-20 06:42:45,227 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-20 06:42:45,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 491 states and 581 transitions. [2021-11-20 06:42:45,232 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2021-11-20 06:42:45,232 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:45,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:45,234 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:45,235 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:45,235 INFO L791 eck$LassoCheckResult]: Stem: 17665#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 17666#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 17700#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17741#fibo1ENTRY ~n := #in~n; 17805#L10 assume !(~n < 1); 17803#L12 assume !(1 == ~n); 17800#L15 call #t~ret4 := fibo2(~n - 1);< 17801#fibo2ENTRY ~n := #in~n; 17821#L20 assume !(~n < 1); 17815#L22 assume !(1 == ~n); 17811#L25 call #t~ret6 := fibo1(~n - 1);< 17812#fibo1ENTRY ~n := #in~n; 17860#L10 assume !(~n < 1); 17859#L12 assume !(1 == ~n); 17850#L15 call #t~ret4 := fibo2(~n - 1);< 17851#fibo2ENTRY ~n := #in~n; 17878#L20 assume !(~n < 1); 17875#L22 assume !(1 == ~n); 17872#L25 call #t~ret6 := fibo1(~n - 1);< 17873#fibo1ENTRY ~n := #in~n; 17895#L10 assume !(~n < 1); 17893#L12 assume !(1 == ~n); 17891#L15 call #t~ret4 := fibo2(~n - 1);< 17892#fibo2ENTRY ~n := #in~n; 17906#L20 assume !(~n < 1); 17904#L22 assume !(1 == ~n); 17901#L25 call #t~ret6 := fibo1(~n - 1);< 17902#fibo1ENTRY ~n := #in~n; 17923#L10 assume !(~n < 1); 17921#L12 assume !(1 == ~n); 17918#L15 call #t~ret4 := fibo2(~n - 1);< 17919#fibo2ENTRY ~n := #in~n; 17926#L20 assume !(~n < 1); 17922#L22 assume 1 == ~n;#res := 1; 17920#fibo2FINAL assume true; 17917#fibo2EXIT >#50#return; 17913#L15-1 call #t~ret5 := fibo2(~n - 2);< 17914#fibo2ENTRY ~n := #in~n; 17953#L20 assume ~n < 1;#res := 0; 17952#fibo2FINAL assume true; 17912#fibo2EXIT >#52#return; 17910#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17908#fibo1FINAL assume true; 17900#fibo1EXIT >#46#return; 17898#L25-1 call #t~ret7 := fibo1(~n - 2);< 17899#fibo1ENTRY ~n := #in~n; 17907#L10 assume !(~n < 1); 17905#L12 assume 1 == ~n;#res := 1; 17903#fibo1FINAL assume true; 17897#fibo1EXIT >#48#return; 17896#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17894#fibo2FINAL assume true; 17890#fibo2EXIT >#50#return; 17685#L15-1 call #t~ret5 := fibo2(~n - 2);< 17877#fibo2ENTRY ~n := #in~n; 17915#L20 assume !(~n < 1); 17911#L22 assume 1 == ~n;#res := 1; 17909#fibo2FINAL assume true; 17889#fibo2EXIT >#52#return; 17876#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17888#fibo1FINAL assume true; 17871#fibo1EXIT >#46#return; 17841#L25-1 call #t~ret7 := fibo1(~n - 2);< 17848#fibo1ENTRY ~n := #in~n; 17966#L10 assume !(~n < 1); 17931#L12 assume !(1 == ~n); 17687#L15 call #t~ret4 := fibo2(~n - 1);< 17925#fibo2ENTRY [2021-11-20 06:42:45,235 INFO L793 eck$LassoCheckResult]: Loop: 17925#fibo2ENTRY ~n := #in~n; 17934#L20 assume !(~n < 1); 17930#L22 assume !(1 == ~n); 17737#L25 call #t~ret6 := fibo1(~n - 1);< 18088#fibo1ENTRY ~n := #in~n; 17933#L10 assume !(~n < 1); 17928#L12 assume !(1 == ~n); 17683#L15 call #t~ret4 := fibo2(~n - 1);< 17925#fibo2ENTRY [2021-11-20 06:42:45,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:45,236 INFO L85 PathProgramCache]: Analyzing trace with hash 930400901, now seen corresponding path program 1 times [2021-11-20 06:42:45,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:45,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274883044] [2021-11-20 06:42:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:45,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:45,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 06:42:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:45,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:45,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:42:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 06:42:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-20 06:42:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 06:42:45,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:45,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274883044] [2021-11-20 06:42:45,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274883044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:45,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248682030] [2021-11-20 06:42:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:45,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:45,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:45,517 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:45,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-20 06:42:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:45,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 06:42:45,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 06:42:45,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 06:42:46,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248682030] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:46,147 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:46,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 25 [2021-11-20 06:42:46,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823406197] [2021-11-20 06:42:46,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:46,148 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:42:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2021-11-20 06:42:46,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:46,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255760010] [2021-11-20 06:42:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:46,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:46,152 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:46,155 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:42:46,253 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:46,253 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:46,253 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:46,253 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:46,254 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:42:46,254 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:46,254 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:46,254 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:46,254 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2021-11-20 06:42:46,254 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:46,254 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:46,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,320 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:46,320 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:42:46,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:46,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:46,330 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:46,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:46,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:46,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-11-20 06:42:46,357 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:46,357 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:46,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:46,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:46,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:46,392 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:46,394 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:46,394 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:46,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-11-20 06:42:46,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:46,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:46,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:46,446 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:46,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:42:46,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:46,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-11-20 06:42:46,538 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:42:46,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:46,541 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:46,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:46,541 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:46,541 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:46,541 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:42:46,541 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:46,541 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:46,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:46,542 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2021-11-20 06:42:46,542 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:46,542 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:46,542 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:46,594 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:46,594 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:42:46,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:46,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:46,595 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:46,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-11-20 06:42:46,597 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 [2021-11-20 06:42:46,603 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:46,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:46,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:46,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:46,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:46,604 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:46,604 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:46,605 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:46,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:46,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:46,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:46,626 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:46,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-11-20 06:42:46,627 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 [2021-11-20 06:42:46,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:46,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:46,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:46,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:46,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:46,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:46,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:46,640 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:42:46,648 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:42:46,648 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 06:42:46,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:46,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:46,650 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:46,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2021-11-20 06:42:46,650 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:42:46,650 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:42:46,650 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:42:46,651 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-11-20 06:42:46,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:46,670 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:42:46,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:46,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 06:42:46,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:47,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:47,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:47,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:47,525 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-11-20 06:42:47,525 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:47,617 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 516 states and 606 transitions. Complement of second has 15 states. [2021-11-20 06:42:47,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:47,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2021-11-20 06:42:47,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2021-11-20 06:42:47,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:47,619 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:42:47,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:47,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 06:42:47,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:48,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:48,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:48,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:48,491 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2021-11-20 06:42:48,492 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:48,572 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 516 states and 606 transitions. Complement of second has 15 states. [2021-11-20 06:42:48,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:48,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:48,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2021-11-20 06:42:48,574 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2021-11-20 06:42:48,574 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:48,574 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:42:48,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:48,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-20 06:42:48,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:49,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:49,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:49,459 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-11-20 06:42:49,459 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:49,612 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 764 states and 882 transitions. Complement of second has 25 states. [2021-11-20 06:42:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2021-11-20 06:42:49,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2021-11-20 06:42:49,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:49,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 75 letters. Loop has 8 letters. [2021-11-20 06:42:49,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:49,616 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 16 letters. [2021-11-20 06:42:49,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:49,616 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 764 states and 882 transitions. [2021-11-20 06:42:49,625 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-11-20 06:42:49,631 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 764 states to 568 states and 666 transitions. [2021-11-20 06:42:49,631 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 298 [2021-11-20 06:42:49,632 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 328 [2021-11-20 06:42:49,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 568 states and 666 transitions. [2021-11-20 06:42:49,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:49,633 INFO L681 BuchiCegarLoop]: Abstraction has 568 states and 666 transitions. [2021-11-20 06:42:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states and 666 transitions. [2021-11-20 06:42:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 539. [2021-11-20 06:42:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 357 states have (on average 1.112044817927171) internal successors, (397), 388 states have internal predecessors, (397), 104 states have call successors, (110), 77 states have call predecessors, (110), 78 states have return successors, (125), 73 states have call predecessors, (125), 94 states have call successors, (125) [2021-11-20 06:42:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 632 transitions. [2021-11-20 06:42:49,648 INFO L704 BuchiCegarLoop]: Abstraction has 539 states and 632 transitions. [2021-11-20 06:42:49,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:42:49,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 06:42:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:42:49,650 INFO L87 Difference]: Start difference. First operand 539 states and 632 transitions. Second operand has 25 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 13 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-20 06:42:50,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:50,304 INFO L93 Difference]: Finished difference Result 683 states and 845 transitions. [2021-11-20 06:42:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 06:42:50,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 683 states and 845 transitions. [2021-11-20 06:42:50,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-11-20 06:42:50,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 683 states to 623 states and 768 transitions. [2021-11-20 06:42:50,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 335 [2021-11-20 06:42:50,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 335 [2021-11-20 06:42:50,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 623 states and 768 transitions. [2021-11-20 06:42:50,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 06:42:50,323 INFO L681 BuchiCegarLoop]: Abstraction has 623 states and 768 transitions. [2021-11-20 06:42:50,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states and 768 transitions. [2021-11-20 06:42:50,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 575. [2021-11-20 06:42:50,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 377 states have (on average 1.1114058355437666) internal successors, (419), 403 states have internal predecessors, (419), 115 states have call successors, (121), 80 states have call predecessors, (121), 83 states have return successors, (167), 91 states have call predecessors, (167), 99 states have call successors, (167) [2021-11-20 06:42:50,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 707 transitions. [2021-11-20 06:42:50,346 INFO L704 BuchiCegarLoop]: Abstraction has 575 states and 707 transitions. [2021-11-20 06:42:50,346 INFO L587 BuchiCegarLoop]: Abstraction has 575 states and 707 transitions. [2021-11-20 06:42:50,346 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-20 06:42:50,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 575 states and 707 transitions. [2021-11-20 06:42:50,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-11-20 06:42:50,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:42:50,356 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:42:50,358 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 7, 6, 6, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:50,358 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:42:50,360 INFO L791 eck$LassoCheckResult]: Stem: 22504#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 22505#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 22536#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 22576#fibo1ENTRY ~n := #in~n; 22609#L10 assume !(~n < 1); 22607#L12 assume !(1 == ~n); 22604#L15 call #t~ret4 := fibo2(~n - 1);< 22605#fibo2ENTRY ~n := #in~n; 22619#L20 assume !(~n < 1); 22617#L22 assume !(1 == ~n); 22614#L25 call #t~ret6 := fibo1(~n - 1);< 22615#fibo1ENTRY ~n := #in~n; 22638#L10 assume !(~n < 1); 22636#L12 assume !(1 == ~n); 22633#L15 call #t~ret4 := fibo2(~n - 1);< 22634#fibo2ENTRY ~n := #in~n; 22657#L20 assume !(~n < 1); 22655#L22 assume !(1 == ~n); 22652#L25 call #t~ret6 := fibo1(~n - 1);< 22653#fibo1ENTRY ~n := #in~n; 22675#L10 assume !(~n < 1); 22673#L12 assume !(1 == ~n); 22670#L15 call #t~ret4 := fibo2(~n - 1);< 22671#fibo2ENTRY ~n := #in~n; 22688#L20 assume !(~n < 1); 22685#L22 assume !(1 == ~n); 22681#L25 call #t~ret6 := fibo1(~n - 1);< 22682#fibo1ENTRY ~n := #in~n; 22700#L10 assume !(~n < 1); 22698#L12 assume !(1 == ~n); 22694#L15 call #t~ret4 := fibo2(~n - 1);< 22695#fibo2ENTRY ~n := #in~n; 22701#L20 assume !(~n < 1); 22699#L22 assume 1 == ~n;#res := 1; 22697#fibo2FINAL assume true; 22693#fibo2EXIT >#50#return; 22690#L15-1 call #t~ret5 := fibo2(~n - 2);< 22691#fibo2ENTRY ~n := #in~n; 22696#L20 assume ~n < 1;#res := 0; 22692#fibo2FINAL assume true; 22689#fibo2EXIT >#52#return; 22687#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 22684#fibo1FINAL assume true; 22680#fibo1EXIT >#46#return; 22677#L25-1 call #t~ret7 := fibo1(~n - 2);< 22678#fibo1ENTRY ~n := #in~n; 22686#L10 assume !(~n < 1); 22683#L12 assume 1 == ~n;#res := 1; 22679#fibo1FINAL assume true; 22676#fibo1EXIT >#48#return; 22674#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 22672#fibo2FINAL assume true; 22669#fibo2EXIT >#50#return; 22666#L15-1 call #t~ret5 := fibo2(~n - 2);< 22668#fibo2ENTRY ~n := #in~n; 22738#L20 assume !(~n < 1); 22735#L22 assume !(1 == ~n); 22733#L25 call #t~ret6 := fibo1(~n - 1);< 22734#fibo1ENTRY ~n := #in~n; 22918#L10 assume !(~n < 1); 22919#L12 assume !(1 == ~n); 22514#L15 call #t~ret4 := fibo2(~n - 1);< 22978#fibo2ENTRY ~n := #in~n; 22565#L20 assume !(~n < 1); 22510#L22 assume !(1 == ~n); 22513#L25 call #t~ret6 := fibo1(~n - 1);< 23057#fibo1ENTRY ~n := #in~n; 23056#L10 assume !(~n < 1); 23055#L12 assume !(1 == ~n); 22546#L15 [2021-11-20 06:42:50,360 INFO L793 eck$LassoCheckResult]: Loop: 22546#L15 call #t~ret4 := fibo2(~n - 1);< 23005#fibo2ENTRY ~n := #in~n; 23006#L20 assume !(~n < 1); 23058#L22 assume !(1 == ~n); 23007#L25 call #t~ret6 := fibo1(~n - 1);< 23057#fibo1ENTRY ~n := #in~n; 23056#L10 assume !(~n < 1); 23055#L12 assume !(1 == ~n); 22546#L15 [2021-11-20 06:42:50,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:50,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1054902100, now seen corresponding path program 2 times [2021-11-20 06:42:50,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:50,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079913251] [2021-11-20 06:42:50,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:50,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-20 06:42:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:50,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:42:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:42:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:50,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-20 06:42:50,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:42:50,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:42:50,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079913251] [2021-11-20 06:42:50,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079913251] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:42:50,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207994611] [2021-11-20 06:42:50,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:42:50,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:42:50,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:50,571 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:42:50,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-11-20 06:42:50,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:42:50,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:42:50,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 06:42:50,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:42:50,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:42:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 06:42:51,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207994611] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:42:51,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:42:51,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 20 [2021-11-20 06:42:51,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467119174] [2021-11-20 06:42:51,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:42:51,030 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 06:42:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash 519237434, now seen corresponding path program 4 times [2021-11-20 06:42:51,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:42:51,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545189176] [2021-11-20 06:42:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:42:51,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:42:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:51,034 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:42:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:42:51,037 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:42:51,162 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:51,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:51,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:51,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:51,163 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 06:42:51,163 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:51,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:51,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:51,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2021-11-20 06:42:51,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:51,163 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:51,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:51,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:51,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:51,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:51,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:51,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:51,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:51,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:51,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:51,233 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:51,233 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 06:42:51,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:51,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:51,234 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:51,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2021-11-20 06:42:51,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:51,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:51,244 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 06:42:51,244 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 06:42:51,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:51,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:51,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:51,264 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:51,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-11-20 06:42:51,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 06:42:51,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:51,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:51,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:51,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:51,301 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:51,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-11-20 06:42:51,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 06:42:51,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 06:42:53,239 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 06:42:53,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Ended with exit code 0 [2021-11-20 06:42:53,243 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 06:42:53,243 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 06:42:53,243 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 06:42:53,243 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 06:42:53,243 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 06:42:53,244 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:53,244 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 06:42:53,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 06:42:53,244 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2021-11-20 06:42:53,244 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 06:42:53,244 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 06:42:53,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:53,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:53,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:53,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:53,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:53,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:53,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:53,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:53,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 06:42:53,326 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 06:42:53,326 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 06:42:53,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:53,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:53,328 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:53,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2021-11-20 06:42:53,330 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 [2021-11-20 06:42:53,337 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:53,337 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:53,337 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:53,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:53,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:53,338 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:53,338 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:53,359 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 06:42:53,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Ended with exit code 0 [2021-11-20 06:42:53,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:53,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:53,397 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:53,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-11-20 06:42:53,403 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 [2021-11-20 06:42:53,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 06:42:53,411 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 06:42:53,411 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 06:42:53,411 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 06:42:53,411 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 06:42:53,412 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 06:42:53,412 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 06:42:53,414 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 06:42:53,417 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 06:42:53,417 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 06:42:53,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:42:53,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:42:53,418 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:42:53,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-11-20 06:42:53,419 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 06:42:53,419 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 06:42:53,419 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 06:42:53,419 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-11-20 06:42:53,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:53,440 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 06:42:53,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:53,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 06:42:53,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:54,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:54,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:54,126 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-11-20 06:42:54,126 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:54,215 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 606 states and 738 transitions. Complement of second has 19 states. [2021-11-20 06:42:54,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:54,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2021-11-20 06:42:54,218 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 69 letters. Loop has 8 letters. [2021-11-20 06:42:54,218 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:54,218 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:42:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:54,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:54,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 06:42:54,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:54,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:54,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:54,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:55,017 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2021-11-20 06:42:55,018 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:55,145 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 606 states and 738 transitions. Complement of second has 21 states. [2021-11-20 06:42:55,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2021-11-20 06:42:55,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 69 letters. Loop has 8 letters. [2021-11-20 06:42:55,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:55,149 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 06:42:55,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:42:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:55,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-20 06:42:55,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:42:55,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:42:55,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:42:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:42:55,866 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-11-20 06:42:55,867 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:55,999 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 1123 states and 1346 transitions. Complement of second has 33 states. [2021-11-20 06:42:55,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-20 06:42:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-11-20 06:42:56,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2021-11-20 06:42:56,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:56,001 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2021-11-20 06:42:56,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:56,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2021-11-20 06:42:56,003 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 06:42:56,003 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1123 states and 1346 transitions. [2021-11-20 06:42:56,014 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:42:56,014 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1123 states to 0 states and 0 transitions. [2021-11-20 06:42:56,015 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 06:42:56,015 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 06:42:56,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 06:42:56,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:42:56,015 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:42:56,015 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:42:56,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:42:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 06:42:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-20 06:42:56,016 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 12 states have internal predecessors, (46), 10 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:42:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:42:56,017 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-20 06:42:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:42:56,017 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-20 06:42:56,017 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:42:56,018 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 06:42:56,018 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 06:42:56,018 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 06:42:56,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 06:42:56,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:42:56,018 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:42:56,018 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:42:56,018 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 06:42:56,019 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-20 06:42:56,019 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-20 06:42:56,019 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 06:42:56,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-20 06:42:56,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 06:42:56 BoogieIcfgContainer [2021-11-20 06:42:56,027 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 06:42:56,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:42:56,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:42:56,028 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:42:56,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:42:20" (3/4) ... [2021-11-20 06:42:56,031 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:42:56,031 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:42:56,032 INFO L158 Benchmark]: Toolchain (without parser) took 36662.54ms. Allocated memory was 119.5MB in the beginning and 224.4MB in the end (delta: 104.9MB). Free memory was 78.1MB in the beginning and 157.7MB in the end (delta: -79.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-20 06:42:56,033 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:42:56,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.64ms. Allocated memory is still 119.5MB. Free memory was 78.0MB in the beginning and 94.3MB in the end (delta: -16.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 06:42:56,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.74ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 92.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:42:56,035 INFO L158 Benchmark]: Boogie Preprocessor took 35.33ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 91.8MB in the end (delta: 968.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:42:56,035 INFO L158 Benchmark]: RCFGBuilder took 285.27ms. Allocated memory is still 119.5MB. Free memory was 91.8MB in the beginning and 82.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:42:56,036 INFO L158 Benchmark]: BuchiAutomizer took 36016.24ms. Allocated memory was 119.5MB in the beginning and 224.4MB in the end (delta: 104.9MB). Free memory was 82.7MB in the beginning and 157.7MB in the end (delta: -75.0MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2021-11-20 06:42:56,036 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 224.4MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:42:56,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 119.5MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.64ms. Allocated memory is still 119.5MB. Free memory was 78.0MB in the beginning and 94.3MB in the end (delta: -16.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.74ms. Allocated memory is still 119.5MB. Free memory was 94.3MB in the beginning and 92.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.33ms. Allocated memory is still 119.5MB. Free memory was 92.7MB in the beginning and 91.8MB in the end (delta: 968.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 285.27ms. Allocated memory is still 119.5MB. Free memory was 91.8MB in the beginning and 82.9MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 36016.24ms. Allocated memory was 119.5MB in the beginning and 224.4MB in the end (delta: 104.9MB). Free memory was 82.7MB in the beginning and 157.7MB in the end (delta: -75.0MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 224.4MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (9 trivial, 3 deterministic, 4 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 9 modules have a trivial ranking function, the largest among these consists of 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 35.9s and 11 iterations. TraceHistogramMax:7. Analysis of lassos took 18.9s. Construction of modules took 2.6s. Büchi inclusion checks took 13.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 14. Automata minimization 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 497 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 575 states and ocurred in iteration 9. Nontrivial modules had stage [3, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/19 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1375 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1332 mSDsluCounter, 2086 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1578 mSDsCounter, 817 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4141 IncrementalHoareTripleChecker+Invalid, 4958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 817 mSolverCounterUnsat, 508 mSDtfsCounter, 4141 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf94 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq183 hnf93 smp80 dnf100 smp100 tf110 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 32 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 6.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-20 06:42:56,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2021-11-20 06:42:56,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-11-20 06:42:56,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-11-20 06:42:56,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-11-20 06:42:56,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:57,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-11-20 06:42:57,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:57,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-11-20 06:42:57,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-11-20 06:42:57,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:42:58,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4af6ccbc-fe31-465d-995b-20316c3aae79/bin/uautomizer-DQz5hQGWxF/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