./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be --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 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:16:16,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:16:16,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:16:16,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:16:16,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:16:16,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:16:16,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:16:16,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:16:16,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:16:16,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:16:16,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:16:16,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:16:16,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:16:16,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:16:16,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:16:16,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:16:16,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:16:16,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:16:16,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:16:16,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:16:16,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:16:16,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:16:16,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:16:16,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:16:16,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:16:16,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:16:16,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:16:16,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:16:16,441 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:16:16,442 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:16:16,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:16:16,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:16:16,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:16:16,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:16:16,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:16:16,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:16:16,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:16:16,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:16:16,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:16:16,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:16:16,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:16:16,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 20:16:16,482 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:16:16,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:16:16,483 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:16:16,484 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:16:16,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:16:16,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:16:16,486 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:16:16,486 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:16:16,486 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:16:16,486 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:16:16,486 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:16:16,487 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:16:16,487 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:16:16,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:16:16,487 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 20:16:16,488 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:16:16,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:16:16,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 20:16:16,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:16:16,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:16:16,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:16:16,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:16:16,489 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 20:16:16,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:16:16,489 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:16:16,490 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:16:16,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:16:16,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:16:16,490 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:16:16,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:16:16,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:16:16,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:16:16,492 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:16:16,492 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_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50f60fa428d099767eedeaaecff58f84e68d960030ff43c7eae2dbdfbde6f992 [2021-10-21 20:16:16,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:16:16,929 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:16:16,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:16:16,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:16:16,934 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:16:16,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2021-10-21 20:16:17,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/data/2c80fb5c6/cd5a9f3bfb9a45698eda75ded5293985/FLAG73b7d4f9f [2021-10-21 20:16:17,676 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:16:17,677 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2021-10-21 20:16:17,684 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/data/2c80fb5c6/cd5a9f3bfb9a45698eda75ded5293985/FLAG73b7d4f9f [2021-10-21 20:16:18,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/data/2c80fb5c6/cd5a9f3bfb9a45698eda75ded5293985 [2021-10-21 20:16:18,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:16:18,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:16:18,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:16:18,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:16:18,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:16:18,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@861f59a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18, skipping insertion in model container [2021-10-21 20:16:18,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:16:18,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:16:18,292 WARN L228 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_85c697af-5512-4e0d-b56d-83fd99bf9f07/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2021-10-21 20:16:18,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:16:18,305 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:16:18,340 WARN L228 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_85c697af-5512-4e0d-b56d-83fd99bf9f07/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2021-10-21 20:16:18,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:16:18,365 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:16:18,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18 WrapperNode [2021-10-21 20:16:18,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:16:18,367 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:16:18,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:16:18,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:16:18,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:16:18,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:16:18,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:16:18,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:16:18,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,428 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:16:18,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:16:18,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:16:18,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:16:18,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (1/1) ... [2021-10-21 20:16:18,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:18,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:18,472 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:18,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:16:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 20:16:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-10-21 20:16:18,528 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-10-21 20:16:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 20:16:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-10-21 20:16:18,529 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-10-21 20:16:18,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:16:18,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:16:18,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:16:18,801 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 20:16:18,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:16:18 BoogieIcfgContainer [2021-10-21 20:16:18,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:16:18,804 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:16:18,804 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:16:18,808 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:16:18,809 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:16:18,809 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:16:18" (1/3) ... [2021-10-21 20:16:18,811 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4869647b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:16:18, skipping insertion in model container [2021-10-21 20:16:18,811 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:16:18,811 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:16:18" (2/3) ... [2021-10-21 20:16:18,812 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4869647b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:16:18, skipping insertion in model container [2021-10-21 20:16:18,812 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:16:18,812 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:16:18" (3/3) ... [2021-10-21 20:16:18,814 INFO L389 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-1.c [2021-10-21 20:16:18,879 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:16:18,880 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:16:18,880 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:16:18,880 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:16:18,880 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:16:18,880 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:16:18,881 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:16:18,881 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:16:18,898 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) [2021-10-21 20:16:18,924 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 20:16:18,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:18,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:18,932 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-21 20:16:18,932 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:18,932 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:16:18,933 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) [2021-10-21 20:16:18,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 20:16:18,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:18,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:18,939 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-21 20:16:18,940 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:18,947 INFO L791 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7#L-1true havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 15#L39true call main_#t~ret11 := fibo1(main_~x~0);< 5#fibo1ENTRYtrue [2021-10-21 20:16:18,948 INFO L793 eck$LassoCheckResult]: Loop: 5#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 10#L15true call #t~ret7 := fibo2(~n - 1);< 14#fibo2ENTRYtrue ~n := #in~n; 12#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 23#L25true call #t~ret9 := fibo1(~n - 1);< 5#fibo1ENTRYtrue [2021-10-21 20:16:18,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:18,971 INFO L82 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-10-21 20:16:18,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:18,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709452373] [2021-10-21 20:16:18,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:18,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:19,121 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:16:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:19,203 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:16:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:19,207 INFO L82 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-10-21 20:16:19,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:19,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528857206] [2021-10-21 20:16:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:19,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:19,234 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:16:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:19,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:16:19,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:19,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-10-21 20:16:19,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:19,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559802908] [2021-10-21 20:16:19,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:19,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:19,305 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:16:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:19,348 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:16:19,643 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:19,644 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:19,644 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:19,644 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:19,644 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:16:19,644 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:19,645 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:19,645 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:19,645 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2021-10-21 20:16:19,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:19,646 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:19,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,670 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:19,795 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:19,796 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:16:19,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:19,807 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:19,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:19,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:19,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 20:16:19,848 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:19,848 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:19,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:19,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:19,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:19,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:19,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:19,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:19,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 20:16:19,928 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:19,928 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:19,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:19,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:19,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:19,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:19,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:19,976 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:19,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 20:16:20,003 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:20,004 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:20,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:20,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:20,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:20,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 20:16:20,088 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:20,088 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:20,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:20,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:20,142 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:20,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 20:16:20,171 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:20,172 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:20,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:20,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,224 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:20,224 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:20,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 20:16:20,258 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:20,259 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:20,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:20,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:20,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:20,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 20:16:20,324 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:20,324 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:20,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:20,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,366 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 20:16:20,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:20,430 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:20,480 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:20,480 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:20,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:20,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 20:16:20,528 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:20,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:20,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:20,595 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,597 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:16:20,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:20,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 20:16:20,708 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:16:20,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:20,717 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:20,718 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:20,718 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:20,718 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:20,718 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:16:20,718 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,718 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:20,718 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:20,718 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2021-10-21 20:16:20,719 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:20,719 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:20,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:20,828 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:20,834 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:16:20,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,850 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 [2021-10-21 20:16:20,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 20:16:20,859 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:20,859 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:20,860 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:20,860 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:20,860 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:20,862 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:20,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:20,881 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:20,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-10-21 20:16:20,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 20:16:20,909 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 [2021-10-21 20:16:20,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:20,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:20,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:20,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:20,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:20,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:20,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:20,939 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:20,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:20,985 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:20,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:20,988 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:20,995 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:16:21,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:21,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:21,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:21,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:21,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:21,013 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:21,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:21,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 20:16:21,031 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:21,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:21,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:21,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:21,078 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:21,092 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 [2021-10-21 20:16:21,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 20:16:21,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:21,103 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:21,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:21,104 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:21,104 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:21,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:21,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:21,116 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:21,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:21,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:21,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:21,160 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:21,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 20:16:21,164 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 [2021-10-21 20:16:21,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:21,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:21,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:21,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:21,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:21,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:21,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:21,191 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:21,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:21,226 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:21,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:21,232 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:21,240 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 [2021-10-21 20:16:21,252 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:21,252 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:21,252 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:21,253 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:21,253 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:21,254 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:21,254 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:21,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 20:16:21,271 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:21,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:21,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:21,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:21,299 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:21,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 20:16:21,304 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 [2021-10-21 20:16:21,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:21,312 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:21,312 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:21,312 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:21,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:21,314 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:21,314 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:21,327 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:21,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:21,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:21,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:21,366 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:21,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 20:16:21,368 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 [2021-10-21 20:16:21,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:21,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:21,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:21,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:21,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:21,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:21,382 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:21,391 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:21,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:21,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:21,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:21,420 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:21,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 20:16:21,426 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 [2021-10-21 20:16:21,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:21,434 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:21,434 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:21,434 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:21,435 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:21,437 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:21,437 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:21,447 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:16:21,450 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 20:16:21,450 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 20:16:21,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:21,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:21,454 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:21,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 20:16:21,484 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:16:21,484 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:16:21,484 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:16:21,485 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-10-21 20:16:21,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:21,509 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:16:21,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:21,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:16:21,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:21,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:16:21,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:21,809 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 [2021-10-21 20:16:21,811 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) [2021-10-21 20:16:22,099 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. [2021-10-21 20:16:22,115 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 [2021-10-21 20:16:22,117 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) [2021-10-21 20:16:22,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-10-21 20:16:22,120 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-21 20:16:22,136 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:22,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-21 20:16:22,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:22,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-10-21 20:16:22,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:22,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-10-21 20:16:22,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 20:16:22,160 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-10-21 20:16:22,162 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-21 20:16:22,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-21 20:16:22,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-10-21 20:16:22,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:22,164 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-10-21 20:16:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-10-21 20:16:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-21 20:16:22,217 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) [2021-10-21 20:16:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-10-21 20:16:22,228 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-21 20:16:22,228 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-21 20:16:22,228 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:16:22,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-10-21 20:16:22,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 20:16:22,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:22,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:22,241 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:22,241 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:22,242 INFO L791 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 197#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 214#L39 call main_#t~ret11 := fibo1(main_~x~0);< 213#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 226#L12 assume !(1 == ~n); 208#L15 call #t~ret7 := fibo2(~n - 1);< 230#fibo2ENTRY ~n := #in~n; 236#L20 assume !(~n < 1); 249#L22 assume !(1 == ~n); 204#L25 call #t~ret9 := 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 [2021-10-21 20:16:22,242 INFO L793 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret10 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret7 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret9 := 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 [2021-10-21 20:16:22,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:22,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-10-21 20:16:22,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:22,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806096781] [2021-10-21 20:16:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:22,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:22,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-21 20:16:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:16:22,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:22,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806096781] [2021-10-21 20:16:22,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806096781] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:16:22,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:16:22,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:16:22,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081414766] [2021-10-21 20:16:22,361 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:22,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:22,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-10-21 20:16:22,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:22,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652376348] [2021-10-21 20:16:22,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:22,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 20:16:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:22,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:16:22,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:22,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652376348] [2021-10-21 20:16:22,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652376348] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 20:16:22,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 20:16:22,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 20:16:22,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537092509] [2021-10-21 20:16:22,465 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:16:22,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:22,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 20:16:22,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 20:16:22,470 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) [2021-10-21 20:16:22,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:22,553 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-10-21 20:16:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 20:16:22,554 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-10-21 20:16:22,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 20:16:22,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-10-21 20:16:22,561 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-10-21 20:16:22,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-10-21 20:16:22,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-10-21 20:16:22,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:22,562 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-10-21 20:16:22,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-10-21 20:16:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-10-21 20:16:22,570 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) [2021-10-21 20:16:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-10-21 20:16:22,572 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-21 20:16:22,572 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-21 20:16:22,572 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:16:22,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-10-21 20:16:22,578 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 20:16:22,578 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:22,579 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:22,580 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:22,580 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:22,580 INFO L791 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 342#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 360#L39 call main_#t~ret11 := fibo1(main_~x~0);< 359#fibo1ENTRY ~n := #in~n; 361#L10 assume !(~n < 1); 371#L12 assume !(1 == ~n); 354#L15 call #t~ret7 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 382#L20 assume !(~n < 1); 398#L22 assume !(1 == ~n); 349#L25 call #t~ret9 := 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 [2021-10-21 20:16:22,580 INFO L793 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret10 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret7 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret9 := 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 [2021-10-21 20:16:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-10-21 20:16:22,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:22,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324586514] [2021-10-21 20:16:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:22,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:22,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-21 20:16:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:22,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:22,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324586514] [2021-10-21 20:16:22,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324586514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:22,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711642349] [2021-10-21 20:16:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:22,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:22,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:22,703 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:22,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 20:16:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:22,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:16:22,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:22,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711642349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:22,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:22,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-21 20:16:22,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798705951] [2021-10-21 20:16:22,833 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:22,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:22,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-10-21 20:16:22,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:22,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699800265] [2021-10-21 20:16:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:22,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:22,842 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:16:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:22,850 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:16:23,100 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:23,100 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:23,100 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:23,101 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:23,101 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:16:23,101 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:23,101 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:23,101 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:23,101 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2021-10-21 20:16:23,102 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:23,102 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:23,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:23,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:23,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:23,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:23,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:23,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:23,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:23,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:23,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:23,201 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:23,201 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:16:23,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:23,205 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:23,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 20:16:23,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:23,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:23,219 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:23,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:23,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:23,244 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:23,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:23,245 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:23,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-21 20:16:23,247 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:23,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:23,257 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:23,257 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:23,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:23,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:23,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:23,312 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:23,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:23,316 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:23,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 20:16:23,347 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:23,348 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:23,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:23,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:23,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:23,407 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:23,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:23,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:23,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 20:16:23,455 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:23,456 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:23,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:23,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:23,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:23,500 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:23,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:23,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:23,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 20:16:23,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-21 20:16:23,551 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:23,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:23,553 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:23,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 20:16:23,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:16:23,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:24,879 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:16:24,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:24,883 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:24,883 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:24,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:24,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:24,883 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:16:24,883 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:24,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:24,884 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:24,884 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2021-10-21 20:16:24,884 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:24,884 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:24,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:24,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:24,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:24,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:24,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:24,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:24,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:24,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:24,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:24,972 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:24,972 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:16:24,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:24,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:24,974 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:24,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-21 20:16:24,976 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 [2021-10-21 20:16:24,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:24,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:24,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:24,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:24,987 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:24,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:24,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:24,989 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:25,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:25,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:25,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:25,015 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:25,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 20:16:25,016 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 [2021-10-21 20:16:25,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:25,024 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:25,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:25,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:25,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:25,025 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:25,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:25,033 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:25,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:25,054 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:25,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:25,055 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:25,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 20:16:25,056 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 [2021-10-21 20:16:25,064 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:25,064 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:25,064 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:25,064 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:25,064 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:25,065 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:25,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:25,084 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:25,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-10-21 20:16:25,108 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:25,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:25,109 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:25,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:16:25,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 20:16:25,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:25,130 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:25,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:25,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:25,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:25,132 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:25,133 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:25,136 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:16:25,138 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 20:16:25,139 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 20:16:25,139 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:25,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:25,140 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:25,141 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:16:25,141 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:16:25,141 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:16:25,142 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-10-21 20:16:25,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-21 20:16:25,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:25,165 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:16:25,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:25,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:16:25,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:25,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:16:25,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:25,657 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 [2021-10-21 20:16:25,658 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) [2021-10-21 20:16:26,204 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. [2021-10-21 20:16:26,205 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 [2021-10-21 20:16:26,205 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) [2021-10-21 20:16:26,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-10-21 20:16:26,206 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-10-21 20:16:26,207 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:26,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-10-21 20:16:26,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:26,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-10-21 20:16:26,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:26,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-10-21 20:16:26,216 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 20:16:26,223 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-10-21 20:16:26,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-10-21 20:16:26,224 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-10-21 20:16:26,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-10-21 20:16:26,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:26,225 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-10-21 20:16:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-10-21 20:16:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-10-21 20:16:26,243 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) [2021-10-21 20:16:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-10-21 20:16:26,246 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-10-21 20:16:26,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:26,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 20:16:26,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 20:16:26,247 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 20:16:26,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:26,400 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2021-10-21 20:16:26,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 20:16:26,401 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2021-10-21 20:16:26,406 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 20:16:26,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2021-10-21 20:16:26,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-10-21 20:16:26,413 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-10-21 20:16:26,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2021-10-21 20:16:26,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:26,414 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2021-10-21 20:16:26,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2021-10-21 20:16:26,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2021-10-21 20:16:26,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 113 states have internal predecessors, (130), 38 states have call successors, (40), 20 states have call predecessors, (40), 26 states have return successors, (55), 33 states have call predecessors, (55), 36 states have call successors, (55) [2021-10-21 20:16:26,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2021-10-21 20:16:26,435 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-21 20:16:26,435 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-21 20:16:26,435 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:16:26,435 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2021-10-21 20:16:26,437 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 20:16:26,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:26,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:26,442 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-21 20:16:26,442 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-21 20:16:26,443 INFO L791 eck$LassoCheckResult]: Stem: 1156#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1157#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 1185#L39 call main_#t~ret11 := fibo1(main_~x~0);< 1219#fibo1ENTRY ~n := #in~n; 1207#L10 assume !(~n < 1); 1202#L12 assume !(1 == ~n); 1165#L15 call #t~ret7 := fibo2(~n - 1);< 1208#fibo2ENTRY ~n := #in~n; 1215#L20 assume !(~n < 1); 1164#L22 assume !(1 == ~n); 1166#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume !(~n < 1); 1247#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume ~n < 1;#res := 0; 1204#fibo2FINAL assume true; 1205#fibo2EXIT >#50#return; 1187#L15-1 call #t~ret8 := fibo2(~n - 2);< 1191#fibo2ENTRY ~n := #in~n; 1315#L20 assume !(~n < 1); 1314#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1251#L10 assume !(~n < 1); 1255#L12 assume 1 == ~n;#res := 1; 1256#fibo1FINAL assume true; 1245#fibo1EXIT >#46#return; 1236#L25-1 call #t~ret10 := fibo1(~n - 2);< 1178#fibo1ENTRY ~n := #in~n; 1241#L10 assume !(~n < 1); 1240#L12 assume !(1 == ~n); 1177#L15 call #t~ret7 := fibo2(~n - 1);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume ~n < 1;#res := 0; 1232#fibo2FINAL assume true; 1239#fibo2EXIT >#50#return; 1176#L15-1 call #t~ret8 := fibo2(~n - 2);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume !(~n < 1); 1227#L22 assume 1 == ~n;#res := 1; 1228#fibo2FINAL assume true; 1304#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-21 20:16:26,443 INFO L793 eck$LassoCheckResult]: Loop: 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-21 20:16:26,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:26,444 INFO L82 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-10-21 20:16:26,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:26,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672842185] [2021-10-21 20:16:26,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:26,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 20:16:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:26,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 20:16:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 20:16:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-21 20:16:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 20:16:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-10-21 20:16:26,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:26,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672842185] [2021-10-21 20:16:26,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672842185] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:26,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044882908] [2021-10-21 20:16:26,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:26,761 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:26,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:26,762 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:26,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-21 20:16:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:26,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 20:16:26,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 17 proven. 91 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-21 20:16:27,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044882908] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:27,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:27,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13] total 17 [2021-10-21 20:16:27,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405035009] [2021-10-21 20:16:27,237 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:27,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-10-21 20:16:27,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:27,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572609313] [2021-10-21 20:16:27,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:27,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:27,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 20:16:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:27,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:27,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 20:16:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:27,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-21 20:16:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:27,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:27,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 20:16:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:27,387 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-21 20:16:27,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:27,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572609313] [2021-10-21 20:16:27,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572609313] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:27,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892025085] [2021-10-21 20:16:27,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:27,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:27,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:27,396 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:27,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-21 20:16:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:27,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 20:16:27,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-21 20:16:27,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892025085] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:27,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:27,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2021-10-21 20:16:27,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706202317] [2021-10-21 20:16:27,727 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:16:27,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 20:16:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-21 20:16:27,728 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2021-10-21 20:16:27,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:27,981 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2021-10-21 20:16:27,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:16:27,982 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2021-10-21 20:16:27,988 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 20:16:27,992 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2021-10-21 20:16:27,992 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-10-21 20:16:27,993 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2021-10-21 20:16:27,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2021-10-21 20:16:27,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:27,994 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-10-21 20:16:27,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2021-10-21 20:16:28,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2021-10-21 20:16:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 115 states have (on average 1.182608695652174) internal successors, (136), 125 states have internal predecessors, (136), 38 states have call successors, (39), 24 states have call predecessors, (39), 31 states have return successors, (63), 34 states have call predecessors, (63), 36 states have call successors, (63) [2021-10-21 20:16:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-10-21 20:16:28,014 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-21 20:16:28,014 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-21 20:16:28,014 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 20:16:28,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2021-10-21 20:16:28,017 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 20:16:28,017 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:28,017 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:28,019 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:28,019 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-21 20:16:28,020 INFO L791 eck$LassoCheckResult]: Stem: 2262#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2263#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 2297#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2331#fibo1ENTRY ~n := #in~n; 2320#L10 assume !(~n < 1); 2313#L12 assume !(1 == ~n); 2314#L15 call #t~ret7 := fibo2(~n - 1);< 2322#fibo2ENTRY ~n := #in~n; 2403#L20 assume !(~n < 1); 2402#L22 assume !(1 == ~n); 2306#L25 call #t~ret9 := fibo1(~n - 1);< 2345#fibo1ENTRY ~n := #in~n; 2343#L10 assume !(~n < 1); 2342#L12 assume !(1 == ~n); 2317#L15 call #t~ret7 := fibo2(~n - 1);< 2336#fibo2ENTRY ~n := #in~n; 2366#L20 assume !(~n < 1); 2364#L22 assume !(1 == ~n); 2273#L25 call #t~ret9 := fibo1(~n - 1);< 2345#fibo1ENTRY ~n := #in~n; 2346#L10 assume !(~n < 1); 2375#L12 assume 1 == ~n;#res := 1; 2376#fibo1FINAL assume true; 2421#fibo1EXIT >#46#return; 2416#L25-1 call #t~ret10 := fibo1(~n - 2);< 2418#fibo1ENTRY ~n := #in~n; 2422#L10 assume ~n < 1;#res := 0; 2419#fibo1FINAL assume true; 2415#fibo1EXIT >#48#return; 2411#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2409#fibo2FINAL assume true; 2383#fibo2EXIT >#50#return; 2385#L15-1 [2021-10-21 20:16:28,020 INFO L793 eck$LassoCheckResult]: Loop: 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume !(1 == ~n); 2275#L25 call #t~ret9 := fibo1(~n - 1);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume !(1 == ~n); 2275#L25 call #t~ret9 := fibo1(~n - 1);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume 1 == ~n;#res := 1; 2407#fibo2FINAL assume true; 2390#fibo2EXIT >#50#return; 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume ~n < 1;#res := 0; 2404#fibo2FINAL assume true; 2401#fibo2EXIT >#52#return; 2384#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2400#fibo1FINAL assume true; 2393#fibo1EXIT >#46#return; 2276#L25-1 call #t~ret10 := fibo1(~n - 2);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume 1 == ~n;#res := 1; 2407#fibo2FINAL assume true; 2390#fibo2EXIT >#50#return; 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume ~n < 1;#res := 0; 2404#fibo2FINAL assume true; 2401#fibo2EXIT >#52#return; 2384#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2400#fibo1FINAL assume true; 2393#fibo1EXIT >#48#return; 2391#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2388#fibo2FINAL assume true; 2386#fibo2EXIT >#50#return; 2385#L15-1 [2021-10-21 20:16:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:28,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-10-21 20:16:28,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:28,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160997238] [2021-10-21 20:16:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:28,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 20:16:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:16:28,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:28,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160997238] [2021-10-21 20:16:28,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160997238] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:28,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710721990] [2021-10-21 20:16:28,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:28,185 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:28,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:28,186 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:28,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-21 20:16:28,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 20:16:28,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:16:28,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710721990] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:28,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:28,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 15 [2021-10-21 20:16:28,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068944628] [2021-10-21 20:16:28,467 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:28,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-10-21 20:16:28,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:28,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342677796] [2021-10-21 20:16:28,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:28,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 20:16:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 20:16:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-21 20:16:28,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:28,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342677796] [2021-10-21 20:16:28,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342677796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:28,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010476349] [2021-10-21 20:16:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:28,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:28,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:28,683 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:28,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-21 20:16:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:28,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 20:16:28,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-21 20:16:29,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010476349] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:29,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:29,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-10-21 20:16:29,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132697626] [2021-10-21 20:16:29,066 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:16:29,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:29,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 20:16:29,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:16:29,067 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. cyclomatic complexity: 59 Second operand has 16 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 20:16:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:29,340 INFO L93 Difference]: Finished difference Result 206 states and 268 transitions. [2021-10-21 20:16:29,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 20:16:29,340 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 268 transitions. [2021-10-21 20:16:29,344 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 20:16:29,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 203 states and 264 transitions. [2021-10-21 20:16:29,349 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2021-10-21 20:16:29,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2021-10-21 20:16:29,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 264 transitions. [2021-10-21 20:16:29,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:29,350 INFO L681 BuchiCegarLoop]: Abstraction has 203 states and 264 transitions. [2021-10-21 20:16:29,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 264 transitions. [2021-10-21 20:16:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 194. [2021-10-21 20:16:29,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 132 states have internal predecessors, (143), 39 states have call successors, (40), 25 states have call predecessors, (40), 33 states have return successors, (66), 36 states have call predecessors, (66), 37 states have call successors, (66) [2021-10-21 20:16:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 249 transitions. [2021-10-21 20:16:29,367 INFO L704 BuchiCegarLoop]: Abstraction has 194 states and 249 transitions. [2021-10-21 20:16:29,367 INFO L587 BuchiCegarLoop]: Abstraction has 194 states and 249 transitions. [2021-10-21 20:16:29,367 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 20:16:29,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 194 states and 249 transitions. [2021-10-21 20:16:29,370 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 20:16:29,370 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:29,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:29,372 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:29,372 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:29,373 INFO L791 eck$LassoCheckResult]: Stem: 3059#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3060#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 3092#L39 call main_#t~ret11 := fibo1(main_~x~0);< 3125#fibo1ENTRY ~n := #in~n; 3181#L10 assume !(~n < 1); 3180#L12 assume !(1 == ~n); 3069#L15 call #t~ret7 := fibo2(~n - 1);< 3179#fibo2ENTRY ~n := #in~n; 3118#L20 assume !(~n < 1); 3068#L22 assume !(1 == ~n); 3070#L25 call #t~ret9 := fibo1(~n - 1);< 3086#fibo1ENTRY ~n := #in~n; 3087#L10 assume !(~n < 1); 3109#L12 assume !(1 == ~n); 3110#L15 call #t~ret7 := fibo2(~n - 1);< 3115#fibo2ENTRY ~n := #in~n; 3124#L20 assume !(~n < 1); 3170#L22 assume !(1 == ~n); 3105#L25 call #t~ret9 := fibo1(~n - 1);< 3152#fibo1ENTRY ~n := #in~n; 3153#L10 assume !(~n < 1); 3177#L12 assume !(1 == ~n); 3168#L15 call #t~ret7 := fibo2(~n - 1);< 3169#fibo2ENTRY ~n := #in~n; 3174#L20 assume !(~n < 1); 3172#L22 assume 1 == ~n;#res := 1; 3171#fibo2FINAL assume true; 3167#fibo2EXIT >#50#return; 3165#L15-1 call #t~ret8 := fibo2(~n - 2);< 3166#fibo2ENTRY ~n := #in~n; 3175#L20 assume ~n < 1;#res := 0; 3173#fibo2FINAL assume true; 3164#fibo2EXIT >#52#return; 3163#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 3161#fibo1FINAL assume true; 3155#fibo1EXIT >#46#return; 3146#L25-1 call #t~ret10 := fibo1(~n - 2);< 3154#fibo1ENTRY ~n := #in~n; 3243#L10 assume ~n < 1;#res := 0; 3244#fibo1FINAL assume true; 3238#fibo1EXIT >#48#return; 3219#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 3218#fibo2FINAL assume true; 3215#fibo2EXIT >#50#return; 3065#L15-1 call #t~ret8 := fibo2(~n - 2);< 3123#fibo2ENTRY [2021-10-21 20:16:29,373 INFO L793 eck$LassoCheckResult]: Loop: 3123#fibo2ENTRY ~n := #in~n; 3116#L20 assume !(~n < 1); 3061#L22 assume !(1 == ~n); 3067#L25 call #t~ret9 := fibo1(~n - 1);< 3200#fibo1ENTRY ~n := #in~n; 3213#L10 assume !(~n < 1); 3209#L12 assume !(1 == ~n); 3064#L15 call #t~ret7 := fibo2(~n - 1);< 3123#fibo2ENTRY [2021-10-21 20:16:29,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:29,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1055972758, now seen corresponding path program 1 times [2021-10-21 20:16:29,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:29,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139400467] [2021-10-21 20:16:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:29,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 20:16:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:29,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:29,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:29,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:29,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 20:16:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-21 20:16:29,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:29,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139400467] [2021-10-21 20:16:29,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139400467] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:29,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671496708] [2021-10-21 20:16:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:29,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:29,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:29,492 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:29,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-21 20:16:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:29,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 20:16:29,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 20:16:29,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671496708] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:29,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:29,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 20 [2021-10-21 20:16:29,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603765989] [2021-10-21 20:16:29,957 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:29,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:29,957 INFO L82 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2021-10-21 20:16:29,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:29,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469489753] [2021-10-21 20:16:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:29,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:29,962 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:16:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:29,965 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:16:30,090 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:30,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:30,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:30,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:30,091 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:16:30,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:30,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:30,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:30,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration6_Loop [2021-10-21 20:16:30,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:30,091 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:30,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,118 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,166 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:30,167 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:16:30,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:30,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:30,169 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:30,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:30,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:30,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-21 20:16:30,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:30,240 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:30,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:30,241 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:30,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:16:30,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:30,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-21 20:16:30,391 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:16:30,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:30,400 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:30,400 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:30,400 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:30,401 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:30,401 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:16:30,401 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:30,401 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:30,401 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:30,401 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration6_Loop [2021-10-21 20:16:30,401 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:30,401 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:30,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:30,481 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:30,481 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:16:30,482 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:30,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:30,483 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:30,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-21 20:16:30,492 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 [2021-10-21 20:16:30,503 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:30,503 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:30,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:30,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:30,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:30,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:30,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:30,527 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:30,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:30,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:30,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:30,570 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:30,576 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 [2021-10-21 20:16:30,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-21 20:16:30,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:30,586 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:30,586 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:30,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:30,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:30,586 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:30,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:30,591 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:30,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:30,614 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:30,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:30,614 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:30,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-21 20:16:30,616 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 [2021-10-21 20:16:30,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:30,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:30,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:30,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:30,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:30,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:30,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:30,627 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:16:30,630 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 20:16:30,630 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:16:30,630 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:30,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:30,632 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:30,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-21 20:16:30,633 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:16:30,633 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:16:30,633 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:16:30,633 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-10-21 20:16:30,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:30,659 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:16:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:30,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 20:16:30,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:31,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:31,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:16:31,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:31,671 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 [2021-10-21 20:16:31,672 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:16:31,863 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 349 states and 444 transitions. Complement of second has 24 states. [2021-10-21 20:16:31,864 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 [2021-10-21 20:16:31,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:16:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2021-10-21 20:16:31,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-21 20:16:31,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:31,866 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:16:31,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:31,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 20:16:31,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:32,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:16:32,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:32,741 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 [2021-10-21 20:16:32,742 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:16:32,916 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 349 states and 444 transitions. Complement of second has 24 states. [2021-10-21 20:16:32,920 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 [2021-10-21 20:16:32,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:16:32,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2021-10-21 20:16:32,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-21 20:16:32,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:32,922 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:16:32,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:33,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 20:16:33,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:33,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:16:33,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:33,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:33,834 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 [2021-10-21 20:16:33,834 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:16:34,055 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 426 states and 529 transitions. Complement of second has 23 states. [2021-10-21 20:16:34,055 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 [2021-10-21 20:16:34,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 20:16:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-10-21 20:16:34,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-21 20:16:34,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:34,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 53 letters. Loop has 8 letters. [2021-10-21 20:16:34,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:34,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 16 letters. [2021-10-21 20:16:34,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:34,065 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 426 states and 529 transitions. [2021-10-21 20:16:34,075 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2021-10-21 20:16:34,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 426 states to 329 states and 427 transitions. [2021-10-21 20:16:34,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 180 [2021-10-21 20:16:34,084 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2021-10-21 20:16:34,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 329 states and 427 transitions. [2021-10-21 20:16:34,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:34,086 INFO L681 BuchiCegarLoop]: Abstraction has 329 states and 427 transitions. [2021-10-21 20:16:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states and 427 transitions. [2021-10-21 20:16:34,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 297. [2021-10-21 20:16:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 197 states have (on average 1.1878172588832487) internal successors, (234), 212 states have internal predecessors, (234), 55 states have call successors, (56), 44 states have call predecessors, (56), 45 states have return successors, (90), 40 states have call predecessors, (90), 53 states have call successors, (90) [2021-10-21 20:16:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 380 transitions. [2021-10-21 20:16:34,142 INFO L704 BuchiCegarLoop]: Abstraction has 297 states and 380 transitions. [2021-10-21 20:16:34,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:34,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 20:16:34,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-10-21 20:16:34,144 INFO L87 Difference]: Start difference. First operand 297 states and 380 transitions. Second operand has 20 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 12 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 6 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-21 20:16:34,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:34,903 INFO L93 Difference]: Finished difference Result 405 states and 576 transitions. [2021-10-21 20:16:34,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 20:16:34,904 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 405 states and 576 transitions. [2021-10-21 20:16:34,913 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2021-10-21 20:16:34,924 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 405 states to 405 states and 576 transitions. [2021-10-21 20:16:34,924 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 246 [2021-10-21 20:16:34,925 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2021-10-21 20:16:34,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 405 states and 576 transitions. [2021-10-21 20:16:34,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:34,926 INFO L681 BuchiCegarLoop]: Abstraction has 405 states and 576 transitions. [2021-10-21 20:16:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states and 576 transitions. [2021-10-21 20:16:34,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 369. [2021-10-21 20:16:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 236 states have (on average 1.194915254237288) internal successors, (282), 256 states have internal predecessors, (282), 78 states have call successors, (80), 48 states have call predecessors, (80), 55 states have return successors, (146), 64 states have call predecessors, (146), 76 states have call successors, (146) [2021-10-21 20:16:34,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2021-10-21 20:16:34,960 INFO L704 BuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2021-10-21 20:16:34,960 INFO L587 BuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2021-10-21 20:16:34,960 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 20:16:34,960 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2021-10-21 20:16:34,965 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-21 20:16:34,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:34,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:34,969 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:34,969 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:34,972 INFO L791 eck$LassoCheckResult]: Stem: 5923#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5924#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 5955#L39 call main_#t~ret11 := fibo1(main_~x~0);< 6004#fibo1ENTRY ~n := #in~n; 6042#L10 assume !(~n < 1); 6041#L12 assume !(1 == ~n); 6037#L15 call #t~ret7 := fibo2(~n - 1);< 6040#fibo2ENTRY ~n := #in~n; 6039#L20 assume !(~n < 1); 6038#L22 assume !(1 == ~n); 6006#L25 call #t~ret9 := fibo1(~n - 1);< 6036#fibo1ENTRY ~n := #in~n; 6035#L10 assume !(~n < 1); 6034#L12 assume !(1 == ~n); 6017#L15 call #t~ret7 := fibo2(~n - 1);< 6018#fibo2ENTRY ~n := #in~n; 6027#L20 assume !(~n < 1); 6028#L22 assume !(1 == ~n); 5965#L25 call #t~ret9 := fibo1(~n - 1);< 6029#fibo1ENTRY ~n := #in~n; 6030#L10 assume !(~n < 1); 6125#L12 assume !(1 == ~n); 6116#L15 call #t~ret7 := fibo2(~n - 1);< 6117#fibo2ENTRY ~n := #in~n; 6123#L20 assume !(~n < 1); 6122#L22 assume 1 == ~n;#res := 1; 6120#fibo2FINAL assume true; 6115#fibo2EXIT >#50#return; 6112#L15-1 call #t~ret8 := fibo2(~n - 2);< 6113#fibo2ENTRY ~n := #in~n; 6118#L20 assume ~n < 1;#res := 0; 6114#fibo2FINAL assume true; 6111#fibo2EXIT >#52#return; 6110#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6109#fibo1FINAL assume true; 6108#fibo1EXIT >#46#return; 6099#L25-1 call #t~ret10 := fibo1(~n - 2);< 5946#fibo1ENTRY ~n := #in~n; 6102#L10 assume !(~n < 1); 6101#L12 assume !(1 == ~n); 5945#L15 call #t~ret7 := fibo2(~n - 1);< 6098#fibo2ENTRY ~n := #in~n; 6097#L20 assume !(~n < 1); 6094#L22 assume 1 == ~n;#res := 1; 6095#fibo2FINAL assume true; 6210#fibo2EXIT >#50#return; 6143#L15-1 [2021-10-21 20:16:34,974 INFO L793 eck$LassoCheckResult]: Loop: 6143#L15-1 call #t~ret8 := fibo2(~n - 2);< 6142#fibo2ENTRY ~n := #in~n; 6144#L20 assume !(~n < 1); 6228#L22 assume !(1 == ~n); 5986#L25 call #t~ret9 := fibo1(~n - 1);< 5962#fibo1ENTRY ~n := #in~n; 5985#L10 assume !(~n < 1); 5987#L12 assume !(1 == ~n); 5960#L15 call #t~ret7 := fibo2(~n - 1);< 5995#fibo2ENTRY ~n := #in~n; 6003#L20 assume !(~n < 1); 6216#L22 assume 1 == ~n;#res := 1; 6214#fibo2FINAL assume true; 6212#fibo2EXIT >#50#return; 6143#L15-1 [2021-10-21 20:16:34,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:34,975 INFO L82 PathProgramCache]: Analyzing trace with hash 881386511, now seen corresponding path program 1 times [2021-10-21 20:16:34,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:34,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263217205] [2021-10-21 20:16:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:34,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-21 20:16:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:35,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-10-21 20:16:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 20:16:35,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:35,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263217205] [2021-10-21 20:16:35,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263217205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:35,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296257565] [2021-10-21 20:16:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:35,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:35,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:35,200 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:35,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-21 20:16:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:35,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 20:16:35,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:16:35,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296257565] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:35,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:35,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 18 [2021-10-21 20:16:35,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22299106] [2021-10-21 20:16:35,777 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:35,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:35,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1489002864, now seen corresponding path program 1 times [2021-10-21 20:16:35,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:35,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45107780] [2021-10-21 20:16:35,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:35,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:35,788 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:16:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:35,793 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:16:36,023 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:36,024 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:36,024 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:36,024 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:36,024 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:16:36,024 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:36,024 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:36,024 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:36,024 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2021-10-21 20:16:36,024 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:36,025 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:36,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:36,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:36,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:36,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:36,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:36,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:36,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:36,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:36,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:36,111 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:36,111 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:16:36,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:36,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:36,113 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:36,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-21 20:16:36,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:36,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:36,140 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:36,141 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:36,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:36,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:36,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:36,182 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:36,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:36,185 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:36,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-21 20:16:36,207 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:36,208 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:36,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:36,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:36,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:36,252 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:36,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:36,254 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:36,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-21 20:16:36,287 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:36,288 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:36,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:36,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:36,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:36,332 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:36,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:36,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:36,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-21 20:16:36,356 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:36,356 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:36,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:36,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:36,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:36,392 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:36,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:36,397 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:36,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-21 20:16:36,424 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:36,424 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:36,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:36,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:36,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:36,468 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:36,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:36,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:36,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-21 20:16:36,495 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:36,496 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:36,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:36,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:36,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:36,532 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:36,538 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:36,538 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:36,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-21 20:16:36,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:36,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:36,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:36,572 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:36,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:16:36,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:36,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-21 20:16:37,778 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:16:37,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:37,782 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:37,782 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:37,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:37,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:37,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:16:37,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:37,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:37,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:37,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2021-10-21 20:16:37,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:37,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:37,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:37,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:37,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:37,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:37,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:37,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:37,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:37,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:37,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:37,843 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:37,843 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:16:37,844 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:37,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:37,850 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:37,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-21 20:16:37,852 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 [2021-10-21 20:16:37,860 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:37,860 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:37,861 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:37,861 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:37,861 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:37,862 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:37,862 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:37,863 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:37,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-10-21 20:16:37,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:37,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:37,887 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:37,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-21 20:16:37,889 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 [2021-10-21 20:16:37,898 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:37,898 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:37,898 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:37,898 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:37,898 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:37,899 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:37,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:37,908 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:37,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:37,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:37,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:37,931 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:37,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-21 20:16:37,932 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 [2021-10-21 20:16:37,940 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:37,940 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:37,940 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:37,940 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:37,940 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:37,946 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:37,946 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:37,957 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:37,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:37,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:37,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:37,978 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:37,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-21 20:16:37,980 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 [2021-10-21 20:16:37,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:37,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:37,988 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:37,988 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:37,988 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:37,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:37,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:37,989 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:38,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-10-21 20:16:38,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:38,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:38,016 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:38,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-21 20:16:38,017 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 [2021-10-21 20:16:38,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:38,024 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:38,024 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:38,024 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:38,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:38,025 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:38,025 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:38,026 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:38,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-10-21 20:16:38,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:38,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:38,047 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:38,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-21 20:16:38,050 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 [2021-10-21 20:16:38,058 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:38,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:38,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:38,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:38,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:38,059 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:38,059 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:38,060 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:38,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:38,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:38,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:38,082 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:38,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-21 20:16:38,083 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 [2021-10-21 20:16:38,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:38,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:38,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:38,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:38,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:38,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:38,091 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:38,092 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:38,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-10-21 20:16:38,112 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:38,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:38,113 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:38,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-21 20:16:38,115 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 [2021-10-21 20:16:38,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:38,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:38,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:38,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:38,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:38,123 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:38,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:38,162 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:16:38,164 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 20:16:38,165 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 20:16:38,165 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:38,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:38,168 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:38,169 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:16:38,169 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:16:38,169 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:16:38,170 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-21 20:16:38,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-21 20:16:38,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:38,192 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:16:38,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:38,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 20:16:38,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:38,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:38,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:16:38,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:38,998 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 [2021-10-21 20:16:38,998 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 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) [2021-10-21 20:16:39,442 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. 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 1274 states and 1770 transitions. Complement of second has 40 states. [2021-10-21 20:16:39,442 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 [2021-10-21 20:16:39,443 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) [2021-10-21 20:16:39,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 67 transitions. [2021-10-21 20:16:39,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 67 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-21 20:16:39,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:39,444 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:16:39,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:39,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 20:16:39,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:40,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:16:40,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:40,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:40,162 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 [2021-10-21 20:16:40,162 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 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) [2021-10-21 20:16:40,483 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. 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 582 states and 785 transitions. Complement of second has 26 states. [2021-10-21 20:16:40,484 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 [2021-10-21 20:16:40,484 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) [2021-10-21 20:16:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 46 transitions. [2021-10-21 20:16:40,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 46 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-21 20:16:40,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:40,485 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:16:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:40,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 20:16:40,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:41,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 20:16:41,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:41,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:41,288 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 [2021-10-21 20:16:41,288 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 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) [2021-10-21 20:16:41,797 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. 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 2713 states and 3811 transitions. Complement of second has 124 states. [2021-10-21 20:16:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2021-10-21 20:16:41,798 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) [2021-10-21 20:16:41,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2021-10-21 20:16:41,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-21 20:16:41,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:41,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 60 letters. Loop has 14 letters. [2021-10-21 20:16:41,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:41,803 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 46 letters. Loop has 28 letters. [2021-10-21 20:16:41,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:41,806 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2713 states and 3811 transitions. [2021-10-21 20:16:41,855 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 157 [2021-10-21 20:16:41,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2713 states to 2095 states and 3043 transitions. [2021-10-21 20:16:41,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 575 [2021-10-21 20:16:41,907 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 677 [2021-10-21 20:16:41,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2095 states and 3043 transitions. [2021-10-21 20:16:41,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:41,908 INFO L681 BuchiCegarLoop]: Abstraction has 2095 states and 3043 transitions. [2021-10-21 20:16:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states and 3043 transitions. [2021-10-21 20:16:41,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1775. [2021-10-21 20:16:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1140 states have (on average 1.1771929824561405) internal successors, (1342), 1251 states have internal predecessors, (1342), 375 states have call successors, (405), 220 states have call predecessors, (405), 260 states have return successors, (751), 303 states have call predecessors, (751), 373 states have call successors, (751) [2021-10-21 20:16:42,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2498 transitions. [2021-10-21 20:16:42,017 INFO L704 BuchiCegarLoop]: Abstraction has 1775 states and 2498 transitions. [2021-10-21 20:16:42,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:42,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 20:16:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-10-21 20:16:42,018 INFO L87 Difference]: Start difference. First operand 1775 states and 2498 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 10 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-21 20:16:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:42,550 INFO L93 Difference]: Finished difference Result 2563 states and 3815 transitions. [2021-10-21 20:16:42,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 20:16:42,551 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2563 states and 3815 transitions. [2021-10-21 20:16:42,593 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 232 [2021-10-21 20:16:42,678 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2563 states to 2560 states and 3811 transitions. [2021-10-21 20:16:42,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 824 [2021-10-21 20:16:42,682 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 824 [2021-10-21 20:16:42,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2560 states and 3811 transitions. [2021-10-21 20:16:42,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:42,682 INFO L681 BuchiCegarLoop]: Abstraction has 2560 states and 3811 transitions. [2021-10-21 20:16:42,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states and 3811 transitions. [2021-10-21 20:16:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2382. [2021-10-21 20:16:42,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1519 states have (on average 1.1981566820276497) internal successors, (1820), 1658 states have internal predecessors, (1820), 556 states have call successors, (594), 295 states have call predecessors, (594), 307 states have return successors, (1169), 428 states have call predecessors, (1169), 554 states have call successors, (1169) [2021-10-21 20:16:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3583 transitions. [2021-10-21 20:16:42,816 INFO L704 BuchiCegarLoop]: Abstraction has 2382 states and 3583 transitions. [2021-10-21 20:16:42,817 INFO L587 BuchiCegarLoop]: Abstraction has 2382 states and 3583 transitions. [2021-10-21 20:16:42,817 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 20:16:42,817 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2382 states and 3583 transitions. [2021-10-21 20:16:42,840 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-21 20:16:42,840 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:42,840 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:42,851 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:42,851 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 12, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 6, 5, 5, 5, 5, 4, 4, 1] [2021-10-21 20:16:42,851 INFO L791 eck$LassoCheckResult]: Stem: 16205#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 16206#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 16260#L39 call main_#t~ret11 := fibo1(main_~x~0);< 16308#fibo1ENTRY ~n := #in~n; 16384#L10 assume !(~n < 1); 16383#L12 assume !(1 == ~n); 16379#L15 call #t~ret7 := fibo2(~n - 1);< 16382#fibo2ENTRY ~n := #in~n; 16381#L20 assume !(~n < 1); 16380#L22 assume !(1 == ~n); 16375#L25 call #t~ret9 := fibo1(~n - 1);< 16378#fibo1ENTRY ~n := #in~n; 16377#L10 assume !(~n < 1); 16376#L12 assume !(1 == ~n); 16370#L15 call #t~ret7 := fibo2(~n - 1);< 16374#fibo2ENTRY ~n := #in~n; 16373#L20 assume !(~n < 1); 16372#L22 assume !(1 == ~n); 16353#L25 call #t~ret9 := fibo1(~n - 1);< 16368#fibo1ENTRY ~n := #in~n; 16365#L10 assume !(~n < 1); 16351#L12 assume !(1 == ~n); 16343#L15 call #t~ret7 := fibo2(~n - 1);< 16361#fibo2ENTRY ~n := #in~n; 16359#L20 assume !(~n < 1); 16355#L22 assume 1 == ~n;#res := 1; 16356#fibo2FINAL assume true; 16342#fibo2EXIT >#50#return; 16344#L15-1 call #t~ret8 := fibo2(~n - 2);< 16838#fibo2ENTRY ~n := #in~n; 16836#L20 assume !(~n < 1); 16834#L22 assume !(1 == ~n); 16831#L25 call #t~ret9 := fibo1(~n - 1);< 16832#fibo1ENTRY ~n := #in~n; 16845#L10 assume !(~n < 1); 16843#L12 assume !(1 == ~n); 16841#L15 call #t~ret7 := fibo2(~n - 1);< 16842#fibo2ENTRY ~n := #in~n; 16850#L20 assume !(~n < 1); 16848#L22 assume 1 == ~n;#res := 1; 16847#fibo2FINAL assume true; 16840#fibo2EXIT >#50#return; 16344#L15-1 call #t~ret8 := fibo2(~n - 2);< 16838#fibo2ENTRY ~n := #in~n; 16839#L20 assume !(~n < 1); 17489#L22 assume !(1 == ~n); 17419#L25 call #t~ret9 := fibo1(~n - 1);< 17420#fibo1ENTRY ~n := #in~n; 17484#L10 assume !(~n < 1); 17483#L12 assume 1 == ~n;#res := 1; 17481#fibo1FINAL assume true; 17418#fibo1EXIT >#46#return; 17384#L25-1 call #t~ret10 := fibo1(~n - 2);< 17385#fibo1ENTRY ~n := #in~n; 17395#L10 assume ~n < 1;#res := 0; 17394#fibo1FINAL assume true; 17383#fibo1EXIT >#48#return; 17373#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17372#fibo2FINAL assume true; 17370#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#46#return; 17147#L25-1 [2021-10-21 20:16:42,854 INFO L793 eck$LassoCheckResult]: Loop: 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume !(1 == ~n); 17195#L15 call #t~ret7 := fibo2(~n - 1);< 17201#fibo2ENTRY ~n := #in~n; 17199#L20 assume !(~n < 1); 17197#L22 assume 1 == ~n;#res := 1; 17186#fibo2FINAL assume true; 17209#fibo2EXIT >#50#return; 17189#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17216#L15 call #t~ret7 := fibo2(~n - 1);< 17217#fibo2ENTRY ~n := #in~n; 17328#L20 assume !(~n < 1); 17351#L22 assume 1 == ~n;#res := 1; 17223#fibo2FINAL assume true; 17215#fibo2EXIT >#50#return; 17210#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17227#L15 call #t~ret7 := fibo2(~n - 1);< 17399#fibo2ENTRY ~n := #in~n; 17501#L20 assume !(~n < 1); 17539#L22 assume !(1 == ~n); 17533#L25 call #t~ret9 := fibo1(~n - 1);< 17538#fibo1ENTRY ~n := #in~n; 17772#L10 assume !(~n < 1); 17770#L12 assume !(1 == ~n); 17765#L15 call #t~ret7 := fibo2(~n - 1);< 17768#fibo2ENTRY ~n := #in~n; 17814#L20 assume !(~n < 1); 17835#L22 assume 1 == ~n;#res := 1; 17796#fibo2FINAL assume true; 17764#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#46#return; 17517#L25-1 call #t~ret10 := fibo1(~n - 2);< 17534#fibo1ENTRY ~n := #in~n; 17801#L10 assume !(~n < 1); 17799#L12 assume !(1 == ~n); 17545#L15 call #t~ret7 := fibo2(~n - 1);< 17767#fibo2ENTRY ~n := #in~n; 17782#L20 assume !(~n < 1); 17781#L22 assume 1 == ~n;#res := 1; 17678#fibo2FINAL assume true; 17762#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#48#return; 17510#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17461#fibo2FINAL assume true; 17398#fibo2EXIT >#50#return; 17156#L15-1 call #t~ret8 := fibo2(~n - 2);< 17161#fibo2ENTRY ~n := #in~n; 17364#L20 assume ~n < 1;#res := 0; 17360#fibo2FINAL assume true; 17155#fibo2EXIT >#52#return; 17160#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17393#fibo1FINAL assume true; 17390#fibo1EXIT >#46#return; 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume !(1 == ~n); 17195#L15 call #t~ret7 := fibo2(~n - 1);< 17201#fibo2ENTRY ~n := #in~n; 17199#L20 assume !(~n < 1); 17197#L22 assume 1 == ~n;#res := 1; 17186#fibo2FINAL assume true; 17209#fibo2EXIT >#50#return; 17189#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17227#L15 call #t~ret7 := fibo2(~n - 1);< 17399#fibo2ENTRY ~n := #in~n; 17501#L20 assume !(~n < 1); 17539#L22 assume !(1 == ~n); 17533#L25 call #t~ret9 := fibo1(~n - 1);< 17538#fibo1ENTRY ~n := #in~n; 17772#L10 assume !(~n < 1); 17770#L12 assume !(1 == ~n); 17765#L15 call #t~ret7 := fibo2(~n - 1);< 17768#fibo2ENTRY ~n := #in~n; 17814#L20 assume !(~n < 1); 17835#L22 assume 1 == ~n;#res := 1; 17796#fibo2FINAL assume true; 17764#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#46#return; 17517#L25-1 call #t~ret10 := fibo1(~n - 2);< 17534#fibo1ENTRY ~n := #in~n; 17801#L10 assume !(~n < 1); 17799#L12 assume !(1 == ~n); 17545#L15 call #t~ret7 := fibo2(~n - 1);< 17767#fibo2ENTRY ~n := #in~n; 17782#L20 assume !(~n < 1); 17781#L22 assume 1 == ~n;#res := 1; 17678#fibo2FINAL assume true; 17762#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#48#return; 17510#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17461#fibo2FINAL assume true; 17398#fibo2EXIT >#50#return; 17156#L15-1 call #t~ret8 := fibo2(~n - 2);< 17161#fibo2ENTRY ~n := #in~n; 17364#L20 assume ~n < 1;#res := 0; 17360#fibo2FINAL assume true; 17155#fibo2EXIT >#52#return; 17160#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17393#fibo1FINAL assume true; 17390#fibo1EXIT >#46#return; 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume 1 == ~n;#res := 1; 17204#fibo1FINAL assume true; 17151#fibo1EXIT >#48#return; 17150#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17371#fibo2FINAL assume true; 17369#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#48#return; 17150#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17371#fibo2FINAL assume true; 17369#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#46#return; 17147#L25-1 [2021-10-21 20:16:42,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:42,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1399262747, now seen corresponding path program 1 times [2021-10-21 20:16:42,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:42,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761447763] [2021-10-21 20:16:42,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:42,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:43,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-21 20:16:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:43,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-21 20:16:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:43,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:43,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:43,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 11 proven. 79 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-21 20:16:43,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:43,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761447763] [2021-10-21 20:16:43,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761447763] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:43,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719886379] [2021-10-21 20:16:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:43,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:43,096 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:43,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-21 20:16:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:43,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 20:16:43,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 62 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-21 20:16:43,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719886379] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:43,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:43,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-21 20:16:43,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717189376] [2021-10-21 20:16:43,959 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:43,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:43,959 INFO L82 PathProgramCache]: Analyzing trace with hash -993859138, now seen corresponding path program 1 times [2021-10-21 20:16:43,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:43,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723881266] [2021-10-21 20:16:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:43,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:16:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 20:16:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 20:16:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-21 20:16:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-10-21 20:16:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 20:16:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-21 20:16:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-10-21 20:16:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 2 proven. 113 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2021-10-21 20:16:44,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:44,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723881266] [2021-10-21 20:16:44,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723881266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:44,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236574023] [2021-10-21 20:16:44,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:44,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:44,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:44,372 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:44,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-21 20:16:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:45,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 20:16:45,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:45,468 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 155 proven. 1 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2021-10-21 20:16:45,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236574023] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:45,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:45,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-21 20:16:45,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168372633] [2021-10-21 20:16:45,470 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:16:45,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:45,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 20:16:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-21 20:16:45,471 INFO L87 Difference]: Start difference. First operand 2382 states and 3583 transitions. cyclomatic complexity: 1228 Second operand has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 11 states have internal predecessors, (50), 8 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-21 20:16:45,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:45,834 INFO L93 Difference]: Finished difference Result 2429 states and 3633 transitions. [2021-10-21 20:16:45,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 20:16:45,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2429 states and 3633 transitions. [2021-10-21 20:16:45,874 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-21 20:16:45,918 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2429 states to 2425 states and 3626 transitions. [2021-10-21 20:16:45,918 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 759 [2021-10-21 20:16:45,921 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 759 [2021-10-21 20:16:45,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2425 states and 3626 transitions. [2021-10-21 20:16:45,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:45,922 INFO L681 BuchiCegarLoop]: Abstraction has 2425 states and 3626 transitions. [2021-10-21 20:16:45,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states and 3626 transitions. [2021-10-21 20:16:46,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2404. [2021-10-21 20:16:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 1527 states have (on average 1.197773411918795) internal successors, (1829), 1682 states have internal predecessors, (1829), 562 states have call successors, (600), 297 states have call predecessors, (600), 315 states have return successors, (1160), 424 states have call predecessors, (1160), 559 states have call successors, (1160) [2021-10-21 20:16:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 3589 transitions. [2021-10-21 20:16:46,089 INFO L704 BuchiCegarLoop]: Abstraction has 2404 states and 3589 transitions. [2021-10-21 20:16:46,089 INFO L587 BuchiCegarLoop]: Abstraction has 2404 states and 3589 transitions. [2021-10-21 20:16:46,089 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-21 20:16:46,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2404 states and 3589 transitions. [2021-10-21 20:16:46,143 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-21 20:16:46,143 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:46,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:46,145 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:46,145 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:46,146 INFO L791 eck$LassoCheckResult]: Stem: 22581#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 22582#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 22627#L39 call main_#t~ret11 := fibo1(main_~x~0);< 22681#fibo1ENTRY ~n := #in~n; 22901#L10 assume !(~n < 1); 22894#L12 assume !(1 == ~n); 22707#L15 call #t~ret7 := fibo2(~n - 1);< 22714#fibo2ENTRY ~n := #in~n; 22773#L20 assume !(~n < 1); 22770#L22 assume !(1 == ~n); 22737#L25 call #t~ret9 := fibo1(~n - 1);< 22738#fibo1ENTRY ~n := #in~n; 22757#L10 assume !(~n < 1); 22755#L12 assume !(1 == ~n); 22735#L15 call #t~ret7 := fibo2(~n - 1);< 22750#fibo2ENTRY ~n := #in~n; 22741#L20 assume !(~n < 1); 22739#L22 assume !(1 == ~n); 22715#L25 call #t~ret9 := fibo1(~n - 1);< 22734#fibo1ENTRY ~n := #in~n; 22732#L10 assume !(~n < 1); 22730#L12 assume !(1 == ~n); 22711#L15 call #t~ret7 := fibo2(~n - 1);< 22716#fibo2ENTRY ~n := #in~n; 22774#L20 assume !(~n < 1); 22771#L22 assume !(1 == ~n); 22726#L25 call #t~ret9 := fibo1(~n - 1);< 22769#fibo1ENTRY ~n := #in~n; 22797#L10 assume !(~n < 1); 22792#L12 assume 1 == ~n;#res := 1; 22793#fibo1FINAL assume true; 23632#fibo1EXIT >#46#return; 22807#L25-1 call #t~ret10 := fibo1(~n - 2);< 22810#fibo1ENTRY ~n := #in~n; 23251#L10 assume ~n < 1;#res := 0; 23250#fibo1FINAL assume true; 22806#fibo1EXIT >#48#return; 22804#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 22802#fibo2FINAL assume true; 22758#fibo2EXIT >#50#return; 22702#L15-1 call #t~ret8 := fibo2(~n - 2);< 22723#fibo2ENTRY ~n := #in~n; 22888#L20 assume !(~n < 1); 22886#L22 assume !(1 == ~n); 22880#L25 [2021-10-21 20:16:46,146 INFO L793 eck$LassoCheckResult]: Loop: 22880#L25 call #t~ret9 := fibo1(~n - 1);< 22883#fibo1ENTRY ~n := #in~n; 22968#L10 assume !(~n < 1); 22967#L12 assume !(1 == ~n); 22891#L15 call #t~ret7 := fibo2(~n - 1);< 22893#fibo2ENTRY ~n := #in~n; 23516#L20 assume !(~n < 1); 23062#L22 assume !(1 == ~n); 23063#L25 call #t~ret9 := fibo1(~n - 1);< 23490#fibo1ENTRY ~n := #in~n; 23626#L10 assume !(~n < 1); 23619#L12 assume 1 == ~n;#res := 1; 23616#fibo1FINAL assume true; 23484#fibo1EXIT >#46#return; 22948#L25-1 call #t~ret10 := fibo1(~n - 2);< 22949#fibo1ENTRY ~n := #in~n; 23562#L10 assume ~n < 1;#res := 0; 23560#fibo1FINAL assume true; 23473#fibo1EXIT >#48#return; 22937#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 22935#fibo2FINAL assume true; 22890#fibo2EXIT >#50#return; 22698#L15-1 call #t~ret8 := fibo2(~n - 2);< 22723#fibo2ENTRY ~n := #in~n; 22888#L20 assume !(~n < 1); 22886#L22 assume !(1 == ~n); 22880#L25 [2021-10-21 20:16:46,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:46,147 INFO L82 PathProgramCache]: Analyzing trace with hash -334000957, now seen corresponding path program 1 times [2021-10-21 20:16:46,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:46,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078497210] [2021-10-21 20:16:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:46,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:46,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-21 20:16:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:46,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:16:46,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:46,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078497210] [2021-10-21 20:16:46,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078497210] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:46,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421895269] [2021-10-21 20:16:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:46,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:46,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:46,499 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:46,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-21 20:16:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:47,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 20:16:47,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 20:16:47,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421895269] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:47,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:47,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 20 [2021-10-21 20:16:47,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400297331] [2021-10-21 20:16:47,346 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:47,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:47,347 INFO L82 PathProgramCache]: Analyzing trace with hash 869465037, now seen corresponding path program 1 times [2021-10-21 20:16:47,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:47,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377577732] [2021-10-21 20:16:47,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:47,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 20:16:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:47,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:47,570 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:16:47,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:47,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377577732] [2021-10-21 20:16:47,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377577732] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:47,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059359165] [2021-10-21 20:16:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:47,571 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:47,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:47,572 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:47,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-21 20:16:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:48,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 20:16:48,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:16:48,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059359165] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:48,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:48,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-10-21 20:16:48,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002189180] [2021-10-21 20:16:48,267 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 20:16:48,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 20:16:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-21 20:16:48,268 INFO L87 Difference]: Start difference. First operand 2404 states and 3589 transitions. cyclomatic complexity: 1212 Second operand has 13 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 20:16:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:48,467 INFO L93 Difference]: Finished difference Result 1480 states and 1973 transitions. [2021-10-21 20:16:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 20:16:48,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1480 states and 1973 transitions. [2021-10-21 20:16:48,516 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 101 [2021-10-21 20:16:48,552 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1480 states to 1281 states and 1737 transitions. [2021-10-21 20:16:48,553 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 489 [2021-10-21 20:16:48,553 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 489 [2021-10-21 20:16:48,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1281 states and 1737 transitions. [2021-10-21 20:16:48,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:48,554 INFO L681 BuchiCegarLoop]: Abstraction has 1281 states and 1737 transitions. [2021-10-21 20:16:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states and 1737 transitions. [2021-10-21 20:16:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1039. [2021-10-21 20:16:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 678 states have (on average 1.1592920353982301) internal successors, (786), 733 states have internal predecessors, (786), 204 states have call successors, (213), 137 states have call predecessors, (213), 157 states have return successors, (369), 168 states have call predecessors, (369), 201 states have call successors, (369) [2021-10-21 20:16:48,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1368 transitions. [2021-10-21 20:16:48,639 INFO L704 BuchiCegarLoop]: Abstraction has 1039 states and 1368 transitions. [2021-10-21 20:16:48,639 INFO L587 BuchiCegarLoop]: Abstraction has 1039 states and 1368 transitions. [2021-10-21 20:16:48,639 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-21 20:16:48,640 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1039 states and 1368 transitions. [2021-10-21 20:16:48,648 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 101 [2021-10-21 20:16:48,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:48,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:48,649 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:48,649 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:48,650 INFO L791 eck$LassoCheckResult]: Stem: 26765#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 26766#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 26805#L39 call main_#t~ret11 := fibo1(main_~x~0);< 26847#fibo1ENTRY ~n := #in~n; 26884#L10 assume !(~n < 1); 26883#L12 assume !(1 == ~n); 26879#L15 call #t~ret7 := fibo2(~n - 1);< 26882#fibo2ENTRY ~n := #in~n; 26881#L20 assume !(~n < 1); 26880#L22 assume !(1 == ~n); 26875#L25 call #t~ret9 := fibo1(~n - 1);< 26878#fibo1ENTRY ~n := #in~n; 26877#L10 assume !(~n < 1); 26876#L12 assume !(1 == ~n); 26871#L15 call #t~ret7 := fibo2(~n - 1);< 26874#fibo2ENTRY ~n := #in~n; 26873#L20 assume !(~n < 1); 26872#L22 assume !(1 == ~n); 26868#L25 call #t~ret9 := fibo1(~n - 1);< 26870#fibo1ENTRY ~n := #in~n; 26869#L10 assume !(~n < 1); 26867#L12 assume !(1 == ~n); 26862#L15 call #t~ret7 := fibo2(~n - 1);< 26866#fibo2ENTRY ~n := #in~n; 26865#L20 assume !(~n < 1); 26864#L22 assume !(1 == ~n); 26859#L25 call #t~ret9 := fibo1(~n - 1);< 26858#fibo1ENTRY ~n := #in~n; 26861#L10 assume !(~n < 1); 26915#L12 assume !(1 == ~n); 26912#L15 call #t~ret7 := fibo2(~n - 1);< 26913#fibo2ENTRY ~n := #in~n; 26918#L20 assume !(~n < 1); 26917#L22 assume 1 == ~n;#res := 1; 26914#fibo2FINAL assume true; 26911#fibo2EXIT >#50#return; 26909#L15-1 call #t~ret8 := fibo2(~n - 2);< 26910#fibo2ENTRY ~n := #in~n; 26922#L20 assume ~n < 1;#res := 0; 26919#fibo2FINAL assume true; 26908#fibo2EXIT >#52#return; 26907#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 26906#fibo1FINAL assume true; 26905#fibo1EXIT >#46#return; 26899#L25-1 call #t~ret10 := fibo1(~n - 2);< 26903#fibo1ENTRY ~n := #in~n; 26902#L10 assume !(~n < 1); 26901#L12 assume !(1 == ~n); 26892#L15 call #t~ret7 := fibo2(~n - 1);< 26897#fibo2ENTRY ~n := #in~n; 26896#L20 assume !(~n < 1); 26891#L22 assume !(1 == ~n); 26894#L25 call #t~ret9 := fibo1(~n - 1);< 27236#fibo1ENTRY ~n := #in~n; 27261#L10 assume !(~n < 1); 27256#L12 assume !(1 == ~n); 27248#L15 call #t~ret7 := fibo2(~n - 1);< 27252#fibo2ENTRY [2021-10-21 20:16:48,650 INFO L793 eck$LassoCheckResult]: Loop: 27252#fibo2ENTRY ~n := #in~n; 27262#L20 assume !(~n < 1); 27258#L22 assume !(1 == ~n); 27254#L25 call #t~ret9 := fibo1(~n - 1);< 27265#fibo1ENTRY ~n := #in~n; 27263#L10 assume !(~n < 1); 27259#L12 assume !(1 == ~n); 27247#L15 call #t~ret7 := fibo2(~n - 1);< 27252#fibo2ENTRY [2021-10-21 20:16:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:48,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1022485656, now seen corresponding path program 2 times [2021-10-21 20:16:48,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:48,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518310109] [2021-10-21 20:16:48,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:48,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-10-21 20:16:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-21 20:16:48,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:48,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518310109] [2021-10-21 20:16:48,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518310109] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:48,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131985666] [2021-10-21 20:16:48,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:16:48,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:48,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:48,914 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:48,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-21 20:16:49,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:16:49,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:16:49,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 20:16:49,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 20:16:49,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131985666] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:49,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:49,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 20 [2021-10-21 20:16:49,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335515925] [2021-10-21 20:16:49,958 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:49,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:49,958 INFO L82 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2021-10-21 20:16:49,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:49,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144175231] [2021-10-21 20:16:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:49,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:49,973 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:16:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:49,977 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:16:50,118 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:50,119 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:50,119 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:50,119 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:50,119 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:16:50,119 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,119 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:50,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:50,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2021-10-21 20:16:50,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:50,120 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:50,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,129 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,198 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:50,199 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:16:50,199 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,201 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:50,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:50,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-21 20:16:50,222 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:50,222 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:50,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-10-21 20:16:50,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,254 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-21 20:16:50,256 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:50,256 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:50,267 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:50,267 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:50,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-10-21 20:16:50,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,288 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-21 20:16:50,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:50,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:50,297 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:50,297 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:50,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:50,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,318 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-21 20:16:50,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:50,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:50,328 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:50,328 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:50,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2021-10-21 20:16:50,347 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,349 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-21 20:16:50,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:50,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:50,360 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:16:50,360 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:16:50,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:50,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,383 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-21 20:16:50,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:50,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:50,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:50,417 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,417 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-21 20:16:50,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:16:50,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:50,500 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:16:50,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:50,502 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:50,502 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:50,502 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:50,502 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:50,502 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:16:50,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:50,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:50,503 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2021-10-21 20:16:50,503 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:50,503 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:50,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:50,578 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:50,578 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:16:50,579 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,579 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-21 20:16:50,581 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 [2021-10-21 20:16:50,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:50,588 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:50,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:50,588 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:50,588 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:50,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:50,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:50,591 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:50,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2021-10-21 20:16:50,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,613 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-21 20:16:50,614 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:16:50,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:50,622 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:50,622 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:50,622 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:50,622 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:50,623 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:50,623 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:50,624 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:50,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:50,645 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,646 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-21 20:16:50,647 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 [2021-10-21 20:16:50,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:50,655 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:50,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:50,655 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:50,655 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:50,656 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:50,656 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:50,657 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:50,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:50,680 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,681 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-21 20:16:50,682 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 [2021-10-21 20:16:50,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:50,691 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:50,691 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:50,691 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:50,691 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:50,691 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:50,691 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:50,692 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:50,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2021-10-21 20:16:50,714 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,714 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,716 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 [2021-10-21 20:16:50,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-21 20:16:50,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:50,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:50,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:50,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:50,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:50,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:50,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:50,726 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:50,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:50,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,746 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-21 20:16:50,748 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 [2021-10-21 20:16:50,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:50,755 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:50,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:50,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:50,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:50,756 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:50,756 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:50,757 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:50,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-10-21 20:16:50,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,780 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-21 20:16:50,782 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 [2021-10-21 20:16:50,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:50,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:50,791 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:50,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:50,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:50,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:50,792 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:50,799 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:16:50,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-10-21 20:16:50,821 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,821 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-21 20:16:50,823 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 [2021-10-21 20:16:50,831 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:50,831 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:50,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:50,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:50,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:50,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:50,832 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:50,834 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:16:50,837 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 20:16:50,837 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:16:50,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:50,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:50,839 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:50,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-21 20:16:50,856 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:16:50,856 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:16:50,856 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:16:50,856 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-10-21 20:16:50,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:50,878 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:16:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:50,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 20:16:50,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:51,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:16:51,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:51,611 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 [2021-10-21 20:16:51,612 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:16:51,748 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1076 states and 1404 transitions. Complement of second has 21 states. [2021-10-21 20:16:51,749 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 [2021-10-21 20:16:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:16:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2021-10-21 20:16:51,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-21 20:16:51,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:51,751 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:16:51,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:51,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 20:16:51,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:52,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:16:52,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:52,428 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 [2021-10-21 20:16:52,429 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:16:52,560 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1076 states and 1404 transitions. Complement of second has 21 states. [2021-10-21 20:16:52,561 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 [2021-10-21 20:16:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:16:52,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2021-10-21 20:16:52,561 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-21 20:16:52,562 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:52,562 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:16:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:52,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 20:16:52,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:53,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:16:53,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:53,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:53,295 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 [2021-10-21 20:16:53,295 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:16:53,449 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1821 states and 2255 transitions. Complement of second has 25 states. [2021-10-21 20:16:53,450 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 [2021-10-21 20:16:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:16:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2021-10-21 20:16:53,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-21 20:16:53,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:53,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 65 letters. Loop has 8 letters. [2021-10-21 20:16:53,452 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:53,452 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 16 letters. [2021-10-21 20:16:53,453 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:53,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1821 states and 2255 transitions. [2021-10-21 20:16:53,476 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 133 [2021-10-21 20:16:53,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1821 states to 1322 states and 1717 transitions. [2021-10-21 20:16:53,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 438 [2021-10-21 20:16:53,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 456 [2021-10-21 20:16:53,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1322 states and 1717 transitions. [2021-10-21 20:16:53,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:53,497 INFO L681 BuchiCegarLoop]: Abstraction has 1322 states and 1717 transitions. [2021-10-21 20:16:53,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states and 1717 transitions. [2021-10-21 20:16:53,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1090. [2021-10-21 20:16:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 726 states have (on average 1.159779614325069) internal successors, (842), 774 states have internal predecessors, (842), 205 states have call successors, (214), 147 states have call predecessors, (214), 159 states have return successors, (361), 168 states have call predecessors, (361), 202 states have call successors, (361) [2021-10-21 20:16:53,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1417 transitions. [2021-10-21 20:16:53,542 INFO L704 BuchiCegarLoop]: Abstraction has 1090 states and 1417 transitions. [2021-10-21 20:16:53,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:16:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 20:16:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-21 20:16:53,544 INFO L87 Difference]: Start difference. First operand 1090 states and 1417 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 12 states have internal predecessors, (43), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 20:16:53,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:16:53,960 INFO L93 Difference]: Finished difference Result 552 states and 696 transitions. [2021-10-21 20:16:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-21 20:16:53,961 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 552 states and 696 transitions. [2021-10-21 20:16:53,967 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-21 20:16:53,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 552 states to 499 states and 627 transitions. [2021-10-21 20:16:53,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 268 [2021-10-21 20:16:53,975 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 268 [2021-10-21 20:16:53,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 499 states and 627 transitions. [2021-10-21 20:16:53,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:16:53,976 INFO L681 BuchiCegarLoop]: Abstraction has 499 states and 627 transitions. [2021-10-21 20:16:53,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states and 627 transitions. [2021-10-21 20:16:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 483. [2021-10-21 20:16:53,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 320 states have (on average 1.125) internal successors, (360), 337 states have internal predecessors, (360), 95 states have call successors, (97), 66 states have call predecessors, (97), 68 states have return successors, (149), 79 states have call predecessors, (149), 89 states have call successors, (149) [2021-10-21 20:16:53,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 606 transitions. [2021-10-21 20:16:53,999 INFO L704 BuchiCegarLoop]: Abstraction has 483 states and 606 transitions. [2021-10-21 20:16:53,999 INFO L587 BuchiCegarLoop]: Abstraction has 483 states and 606 transitions. [2021-10-21 20:16:53,999 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-21 20:16:53,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 483 states and 606 transitions. [2021-10-21 20:16:54,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-21 20:16:54,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:16:54,005 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:16:54,005 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] [2021-10-21 20:16:54,006 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 20:16:54,006 INFO L791 eck$LassoCheckResult]: Stem: 34377#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 34378#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 34409#L39 call main_#t~ret11 := fibo1(main_~x~0);< 34450#fibo1ENTRY ~n := #in~n; 34519#L10 assume !(~n < 1); 34517#L12 assume !(1 == ~n); 34514#L15 call #t~ret7 := fibo2(~n - 1);< 34515#fibo2ENTRY ~n := #in~n; 34538#L20 assume !(~n < 1); 34530#L22 assume !(1 == ~n); 34526#L25 call #t~ret9 := fibo1(~n - 1);< 34527#fibo1ENTRY ~n := #in~n; 34611#L10 assume !(~n < 1); 34609#L12 assume !(1 == ~n); 34549#L15 call #t~ret7 := fibo2(~n - 1);< 34550#fibo2ENTRY ~n := #in~n; 34587#L20 assume !(~n < 1); 34585#L22 assume !(1 == ~n); 34581#L25 call #t~ret9 := fibo1(~n - 1);< 34582#fibo1ENTRY ~n := #in~n; 34606#L10 assume !(~n < 1); 34604#L12 assume !(1 == ~n); 34597#L15 call #t~ret7 := fibo2(~n - 1);< 34600#fibo2ENTRY ~n := #in~n; 34648#L20 assume !(~n < 1); 34647#L22 assume !(1 == ~n); 34571#L25 call #t~ret9 := fibo1(~n - 1);< 34646#fibo1ENTRY ~n := #in~n; 34708#L10 assume !(~n < 1); 34728#L12 assume !(1 == ~n); 34726#L15 call #t~ret7 := fibo2(~n - 1);< 34727#fibo2ENTRY ~n := #in~n; 34731#L20 assume !(~n < 1); 34730#L22 assume 1 == ~n;#res := 1; 34729#fibo2FINAL assume true; 34725#fibo2EXIT >#50#return; 34380#L15-1 call #t~ret8 := fibo2(~n - 2);< 34723#fibo2ENTRY ~n := #in~n; 34433#L20 assume ~n < 1;#res := 0; 34381#fibo2FINAL assume true; 34429#fibo2EXIT >#52#return; 34721#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 34719#fibo1FINAL assume true; 34718#fibo1EXIT >#46#return; 34716#L25-1 call #t~ret10 := fibo1(~n - 2);< 34717#fibo1ENTRY ~n := #in~n; 34724#L10 assume !(~n < 1); 34722#L12 assume 1 == ~n;#res := 1; 34720#fibo1FINAL assume true; 34715#fibo1EXIT >#48#return; 34714#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 34701#fibo2FINAL assume true; 34596#fibo2EXIT >#50#return; 34507#L15-1 call #t~ret8 := fibo2(~n - 2);< 34420#fibo2ENTRY ~n := #in~n; 34584#L20 assume !(~n < 1); 34578#L22 assume !(1 == ~n); 34418#L25 call #t~ret9 := fibo1(~n - 1);< 34504#fibo1ENTRY ~n := #in~n; 34467#L10 assume !(~n < 1); 34468#L12 assume !(1 == ~n); 34503#L15 call #t~ret7 := fibo2(~n - 1);< 34680#fibo2ENTRY ~n := #in~n; 34749#L20 assume !(~n < 1); 34747#L22 assume !(1 == ~n); 34740#L25 call #t~ret9 := fibo1(~n - 1);< 34745#fibo1ENTRY ~n := #in~n; 34840#L10 assume !(~n < 1); 34838#L12 assume !(1 == ~n); 34422#L15 [2021-10-21 20:16:54,006 INFO L793 eck$LassoCheckResult]: Loop: 34422#L15 call #t~ret7 := fibo2(~n - 1);< 34833#fibo2ENTRY ~n := #in~n; 34834#L20 assume !(~n < 1); 34841#L22 assume !(1 == ~n); 34742#L25 call #t~ret9 := fibo1(~n - 1);< 34745#fibo1ENTRY ~n := #in~n; 34840#L10 assume !(~n < 1); 34838#L12 assume !(1 == ~n); 34422#L15 [2021-10-21 20:16:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:54,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1054902100, now seen corresponding path program 2 times [2021-10-21 20:16:54,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:54,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325445082] [2021-10-21 20:16:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:54,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:54,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-21 20:16:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:54,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 20:16:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:54,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 20:16:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 20:16:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 20:16:54,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:16:54,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325445082] [2021-10-21 20:16:54,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325445082] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:54,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448945596] [2021-10-21 20:16:54,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 20:16:54,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:16:54,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:54,267 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:16:54,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-21 20:16:54,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 20:16:54,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 20:16:54,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 20:16:54,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 20:16:55,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448945596] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:16:55,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:16:55,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 20 [2021-10-21 20:16:55,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013342448] [2021-10-21 20:16:55,239 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 20:16:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:55,240 INFO L82 PathProgramCache]: Analyzing trace with hash 519237434, now seen corresponding path program 4 times [2021-10-21 20:16:55,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:16:55,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97118097] [2021-10-21 20:16:55,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:16:55,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:16:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:55,249 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:16:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:16:55,252 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:16:55,397 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:55,398 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:55,398 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:55,398 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:55,398 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:16:55,398 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:55,398 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:55,398 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:55,398 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration11_Loop [2021-10-21 20:16:55,398 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:55,398 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:55,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:55,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:55,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:55,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:55,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:55,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:55,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:55,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:55,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:55,521 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:55,521 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:16:55,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:55,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:55,531 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:55,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-21 20:16:55,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:16:55,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:55,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:55,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:55,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:55,582 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:55,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-10-21 20:16:55,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:16:55,585 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:16:57,668 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:16:57,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2021-10-21 20:16:57,671 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:16:57,671 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:16:57,671 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:16:57,671 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:16:57,671 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:16:57,671 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:57,671 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:16:57,671 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:16:57,671 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration11_Loop [2021-10-21 20:16:57,671 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:16:57,671 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:16:57,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:57,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:57,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:57,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:57,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:57,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:57,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:57,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:57,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:16:57,768 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:16:57,769 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:16:57,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:57,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:57,770 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:57,776 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 [2021-10-21 20:16:57,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:16:57,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:16:57,785 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:16:57,785 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:16:57,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:16:57,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:16:57,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:16:57,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-21 20:16:57,799 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:16:57,803 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 20:16:57,803 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:16:57,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:16:57,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:16:57,805 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:16:57,806 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:16:57,806 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:16:57,807 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:16:57,807 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-21 20:16:57,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-21 20:16:57,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:57,844 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:16:57,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:57,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 20:16:57,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:58,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:16:58,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:58,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-21 20:16:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:58,804 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 [2021-10-21 20:16:58,804 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 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) [2021-10-21 20:16:58,934 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. 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 524 states and 649 transitions. Complement of second has 19 states. [2021-10-21 20:16:58,934 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 [2021-10-21 20:16:58,935 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) [2021-10-21 20:16:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 22 transitions. [2021-10-21 20:16:58,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 22 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-21 20:16:58,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:58,936 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:16:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:16:59,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:59,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 20:16:59,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:16:59,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:16:59,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:16:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:16:59,843 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 [2021-10-21 20:16:59,843 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 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) [2021-10-21 20:16:59,986 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. 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 530 states and 655 transitions. Complement of second has 27 states. [2021-10-21 20:16:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-21 20:16:59,987 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) [2021-10-21 20:16:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 25 transitions. [2021-10-21 20:16:59,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 25 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-21 20:16:59,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:16:59,988 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:16:59,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:17:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:00,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 20:17:00,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:17:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:17:00,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 20:17:00,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:17:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:17:00,830 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 [2021-10-21 20:17:00,830 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 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) [2021-10-21 20:17:00,968 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. 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 825 states and 995 transitions. Complement of second has 33 states. [2021-10-21 20:17:00,969 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 [2021-10-21 20:17:00,969 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) [2021-10-21 20:17:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-10-21 20:17:00,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-21 20:17:00,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:17:00,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2021-10-21 20:17:00,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:17:00,971 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2021-10-21 20:17:00,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:17:00,972 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 825 states and 995 transitions. [2021-10-21 20:17:00,980 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-21 20:17:00,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 825 states to 579 states and 719 transitions. [2021-10-21 20:17:00,987 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 270 [2021-10-21 20:17:00,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 314 [2021-10-21 20:17:00,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 579 states and 719 transitions. [2021-10-21 20:17:00,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:17:00,988 INFO L681 BuchiCegarLoop]: Abstraction has 579 states and 719 transitions. [2021-10-21 20:17:00,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states and 719 transitions. [2021-10-21 20:17:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 529. [2021-10-21 20:17:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 354 states have (on average 1.1101694915254237) internal successors, (393), 370 states have internal predecessors, (393), 102 states have call successors, (109), 77 states have call predecessors, (109), 73 states have return successors, (154), 81 states have call predecessors, (154), 96 states have call successors, (154) [2021-10-21 20:17:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 656 transitions. [2021-10-21 20:17:01,006 INFO L704 BuchiCegarLoop]: Abstraction has 529 states and 656 transitions. [2021-10-21 20:17:01,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:17:01,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 20:17:01,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-21 20:17:01,007 INFO L87 Difference]: Start difference. First operand 529 states and 656 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) [2021-10-21 20:17:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:17:01,385 INFO L93 Difference]: Finished difference Result 521 states and 613 transitions. [2021-10-21 20:17:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 20:17:01,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 521 states and 613 transitions. [2021-10-21 20:17:01,391 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:17:01,391 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 521 states to 0 states and 0 transitions. [2021-10-21 20:17:01,391 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 20:17:01,391 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 20:17:01,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 20:17:01,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:17:01,391 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:17:01,392 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:17:01,392 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:17:01,392 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-21 20:17:01,392 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:17:01,392 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:17:01,392 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 20:17:01,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:17:01 BoogieIcfgContainer [2021-10-21 20:17:01,400 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:17:01,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:17:01,401 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:17:01,401 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:17:01,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:16:18" (3/4) ... [2021-10-21 20:17:01,405 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:17:01,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:17:01,407 INFO L168 Benchmark]: Toolchain (without parser) took 43334.56 ms. Allocated memory was 113.2 MB in the beginning and 411.0 MB in the end (delta: 297.8 MB). Free memory was 78.7 MB in the beginning and 133.4 MB in the end (delta: -54.7 MB). Peak memory consumption was 243.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:01,408 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 58.1 MB in the beginning and 58.0 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:17:01,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.55 ms. Allocated memory is still 113.2 MB. Free memory was 78.5 MB in the beginning and 90.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:01,409 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.38 ms. Allocated memory is still 113.2 MB. Free memory was 90.3 MB in the beginning and 89.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:17:01,409 INFO L168 Benchmark]: Boogie Preprocessor took 22.80 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:17:01,410 INFO L168 Benchmark]: RCFGBuilder took 374.11 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 78.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:01,410 INFO L168 Benchmark]: BuchiAutomizer took 42595.89 ms. Allocated memory was 113.2 MB in the beginning and 411.0 MB in the end (delta: 297.8 MB). Free memory was 77.7 MB in the beginning and 133.4 MB in the end (delta: -55.7 MB). Peak memory consumption was 244.5 MB. Max. memory is 16.1 GB. [2021-10-21 20:17:01,411 INFO L168 Benchmark]: Witness Printer took 4.99 ms. Allocated memory is still 411.0 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:17:01,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 58.1 MB in the beginning and 58.0 MB in the end (delta: 31.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.55 ms. Allocated memory is still 113.2 MB. Free memory was 78.5 MB in the beginning and 90.3 MB in the end (delta: -11.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.38 ms. Allocated memory is still 113.2 MB. Free memory was 90.3 MB in the beginning and 89.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.80 ms. Allocated memory is still 113.2 MB. Free memory was 89.0 MB in the beginning and 87.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 374.11 ms. Allocated memory is still 113.2 MB. Free memory was 87.9 MB in the beginning and 78.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 42595.89 ms. Allocated memory was 113.2 MB in the beginning and 411.0 MB in the end (delta: 297.8 MB). Free memory was 77.7 MB in the beginning and 133.4 MB in the end (delta: -55.7 MB). Peak memory consumption was 244.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.99 ms. Allocated memory is still 411.0 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (10 trivial, 2 deterministic, 4 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 10 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 42.5s and 12 iterations. TraceHistogramMax:18. Analysis of lassos took 23.0s. Construction of modules took 3.1s. Büchi inclusion checks took 14.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 15. Automata minimization 798.6ms AutomataMinimizationTime, 15 MinimizatonAttempts, 1197 StatesRemovedByMinimization, 15 NontrivialMinimizations. Non-live state removal took 0.5s Buchi closure took 0.0s. Biggest automaton had 2404 states and ocurred in iteration 8. Nontrivial modules had stage [2, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 531 SDtfs, 1215 SDslu, 1801 SDs, 0 SdLazy, 4129 SolverSat, 718 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3195.5ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI5 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf92 lsp93 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf93 smp80 dnf100 smp100 tf110 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 45ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 6.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 20:17:01,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-21 20:17:01,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-10-21 20:17:01,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-21 20:17:02,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-21 20:17:02,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-21 20:17:02,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-21 20:17:02,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-21 20:17:02,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-21 20:17:03,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-21 20:17:03,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-21 20:17:03,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-21 20:17:03,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-21 20:17:03,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-21 20:17:04,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-21 20:17:04,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85c697af-5512-4e0d-b56d-83fd99bf9f07/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...